Cisco 300-101

Implementing Cisco IP Routing
Version: 6.1

Cisco 300-101 Exam
Topic 1, Network Principles

QUESTION NO: 1
Refer to the exhibit.

Based on this FIB table, which statement is correct?
A. There is no default gateway.
B. The IP address of the router on FastEthernet is 209.168.201.1.
C. The gateway of last resort is 192.168.201.1.
D. The router will listen for all multicast traffic.
Answer: C
Explanation:
The 0.0.0.0/0 route is the default route and is listed as the first CEF entry. Here we see the next
hop for this default route lists 192.168.201.1 as the default router (gateway of last resort).

QUESTION NO: 2

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2

Cisco 300-101 Exam
Refer to the exhibit.

A network administrator checks this adjacency table on a router. What is a possible cause for the
incomplete marking?
A. incomplete ARP information
B. incorrect ACL
C. dynamic routing protocol failure
D. serial link congestion
Answer: A
Explanation:
To display information about the Cisco Express Forwarding adjacency table or the hardware Layer
3-switching adjacency table, use the show adjacency command.
Reasons for Incomplete Adjacencies
There are two known reasons for an incomplete adjacency:
No ARP Entry
When CEF cannot locate a valid adjacency for a destination prefix, it punts the packets to the CPU
for ARP resolution and, in turn, for completion of the adjacency.
Reference: http://www.cisco.com/c/en/us/support/docs/ip/express-forwarding-cef/17812-cefincomp.html#t4

QUESTION NO: 3
A network engineer notices that transmission rates of senders of TCP traffic sharply increase and
decrease simultaneously during periods of congestion. Which condition causes this?
A. global synchronization

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3

latency D.org/wiki/TCP_global_synchronization QUESTION NO: 4 Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three.) A.wikipedia. However.E Explanation: It is a general best practice not to mix TCP-based traffic with UDP-based traffic (especially streaming video) within a single service provider class due to the behaviors of these protocols during periods of congestion. When TCP flows are combined with "Pass Any Exam. TCP transmitters will throttle-back flows when drops have been detected. The simplest technique to limit queue size is known as tail drop. Routers on the Internet normally have packet queues. jitter C. random early detection D. Any Time. lower throughput Answer: A. The queue is allowed to fill to its maximum size. tail drop C. queue management algorithm Answer: A Explanation: TCP global synchronization in computer networks can happen to TCP/IP flows during periods of congestion because each sender will reduce their transmission rate at the same time when packet loss occurs. and there are no problems except that the full queue results in high latency. Reference: http://en. starvation B.www. Although some UDP applications have application-level windowing. rather than discarding them. While the network is stable. Because routers have limited resources. until there is space in the queue again.C. the size of these queues is also limited. steady streams to lose packets simultaneously. and retransmission capabilities. Specifically. windowing E. especially when bursty traffic is present. flow control. the queue is constantly full.Cisco 300-101 Exam B.com 4 .actualtests. This causes problems when used on TCP/IP routers handling multiple TCP streams. most UDP transmitters are completely oblivious to drops and thus never lower transmission rates due to dropping. the introduction of a sudden burst of traffic may cause large numbers of established. to allow them to hold packets when the network is busy. and then any new packets are simply discarded." .

Benefits: • Native dual stack does not require any tunneling mechanisms on internal networks • Both IPv4 and IPv6 run independent of each other • Dual stack supports gradual migration of endpoints. TCP-starvation/UDP-dominance likely occurs if (TCP-based) mission-critical data is assigned to the same service provider class as (UDP-based) streaming video and the class experiences sustained congestion. but it is beneficial to be aware of this behavior when making such application-mixing decisions. 6to4 tunneling C. This can increase latency and lower the overall throughput. the same behavior would be observed. dual-stack method B. Granted. it is not always possible to separate TCP-based flows from UDP-based flows.Cisco 300-101 Exam UDP flows in a single service provider class and the class experiences congestion. as WRED (for the most part) only affects TCP-based flows.com/web/strategy/docs/gov/IPV6at_a_glance_c45-625859. then IPv4 is used.com 5 . so it offers a very flexible coexistence strategy. For sessions that support IPv6. Any Time.pdf QUESTION NO: 6 Which statement about the use of tunneling to migrate to IPv6 is true? "Pass Any Exam. IPv6 is used on a dual stack endpoint. Reference: http://www. then TCP flows will continually lower their rates.htm QUESTION NO: 5 Which method allows IPv4 and IPv6 to work together without requiring both to be used for a single connection during the migration process? A.cisco. potentially giving up their bandwidth to drop-oblivious UDP flows. This effect is called TCP-starvation/UDP-dominance. It allows hosts to simultaneously reach IPv4 and IPv6 content." .cisco. networks.actualtests. Reference: http://www.com/warp/public/cc/so/neso/vpn/vpnsp/spqsd_wp. Even if WRED is enabled on the service provider class. GRE tunneling D.www. and applications. If both endpoints support IPv4 only. NAT-PT Answer: A Explanation: Dual stack means that devices are able to run IPv4 and IPv6 in parallel.

organizations build an overlay network that tunnels one protocol over the other by encapsulating IPv6 packets within IPv4 packets and IPv4 packets within IPv6 packets.) A. use the following commands in any mode: Command Purpose clear ip route {* | {route | prefix/length}[next-hop interface]} [vrf vrf-name] Example: "Pass Any Exam. IP routing B.com 6 ." . which negates interoperability. FIB C. as discussed in RFC 6144: • Users of the new architecture cannot use the services of the underlying infrastructure. topology table Answer: A. Tunneling is more difficult to configure than dual stack or translation.actualtests. Tunneling does not enable users of the new protocol to communicate with users of the old protocol without dual-stack hosts.www.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6solution/white_paper_c11-676278. The advantage of this approach is that the new protocol can work without disturbing the old protocol.cisco.Cisco 300-101 Exam A. thus providing connectivity between users of the new protocol. B. D. Reference: http://www.html QUESTION NO: 7 A network administrator executes the command clear ip route. Cisco Express Forwarding table F. ARP cache D. Tunneling has two disadvantages. Answer: C Explanation: Using the tunneling option. Which two tables does this command clear and rebuild? (Choose two. Tunneling is less secure than dual stack or translation. C. Tunneling destinations are manually determined by the IPv4 address in the low-order 32 bits of IPv4-compatible IPv6 addresses. Any Time. • Tunneling does not enable users of the new protocol to communicate with users of the old protocol without dual-stack hosts. MAC address table E.B Explanation: To clear one or more entries in the IP routing table.

Reference: . Routers offer better packet-transfer performance when fast switching is enabled.Cisco 300-101 Exam switch(config)# clear ip route 10.2.actualtests. use the “show ip cache” EXEC "Pass Any Exam.com/c/en/us/td/docs/switches/datacenter/nexus5000/sw/unicast/5_0_3_N1_1/Cis co_n5k_layer3_ucast_cfg_rel_503_N1_1/l3_manage-routes.2. alphanumeric string up to 32 characters. • route—An individual IP route. cut-through packet switching Answer: A Explanation: Fast switching allows higher throughput by switching a packet using a cache created by the initial packet sent to a particular destination. • next-hop—The next-hop address • interface—The interface to reach the next-hop address. Fast switching is enabled by default on all interfaces that support fast switching. Cisco Express Forwarding switching D.html QUESTION NO: 8 Which switching method is used when entries are present in the output of the command show ip cache? A. • prefix/length—Any IP prefix.www. To display the routing table cache used to fast switch IP traffic. Reference: http://www. Destination addresses are stored in the high-speed cache to expedite forwarding.cisco. fast switching B.com 7 command." . The route options are as follows: • *—All routes. The vrf-name can be any case-sensitive.2 Clears one or more routes from both the unicast RIB and all the module FIBs. process switching C. Any Time.

Execute the command ip tcp queuemax. B. E.B Explanation: The TCP Window Scaling feature adds support for the Window Scaling option in RFC 1323.cisco. Any Time. D.actualtests. Use the ip tcp window-size command in global configuration mode to configure the TCP window size.html#GUID-BD998AC6-F128-47DD-B5F7-B226546D4B08 QUESTION NO: 10 Which three TCP enhancements can be used with TCP selective acknowledgments? (Choose three. Execute the command ip tcp window-size 65536. Execute the command ip tcp adjust-mss.Cisco 300-101 Exam QUESTION NO: 9 Which two actions must you perform to enable and use window scaling on a router? (Choose two. The window size can increase to a scale factor of 14. the remote host must also support this feature and its window size must be increased. keepalive D. The window scaling extension in Cisco IOS software expands the definition of the TCP window to 32 bits and then uses a scale factor to carry this 32-bit value in the 16-bit window field of the TCP header. Typical applications use a scale factor of 3 when deployed in LFNs. Answer: A. TCP path discovery F.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/12-4t/iap-12-4tbook/iap-tcp. The TCP Window Scaling feature complies with RFC 1323. Set TCP options to "enabled" on the remote host. Set window scaling to be used on the remote host.) A. In order for this to work. C. Reference: http://www.) A. TCP Extensions for High Performance . MTU window "Pass Any Exam." . explicit congestion notification C. The TCP Window Scaling enhancement provides that support.www. time stamps E. A larger window size is recommended to improve TCP performance in network paths with large bandwidth-delay product characteristics that are called Long Fat Networks (LFNs). The larger scalable window size will allow TCP to perform better over LFNs.com 8 . header compression B.

TCP Keepalive Timer The TCP Keepalive Timer feature provides a mechanism to identify dead connections. TCP receives acknowledgment of packets 1. Use the ip tcp timestamp command to enable the TCP time-stamp option. The benefit of this feature is the reduction of delay and packet loss in data transmissions. When a TCP connection on a routing device is idle for too long. It also provides enhanced support for TCP sessions associated with applications. such as Telnet. With selective acknowledgment.Cisco 300-101 Exam Answer: B. the TCP time-stamp option is disabled. Use the ip tcp ecn command in global configuration mode to enable TCP ECN. 2. TCP selective acknowledgment is used only when multiple packets are dropped within one TCP window.com 9 . Any Time. 2. the connection is considered dead and the device initiating the probes frees resources used by the "Pass Any Exam. TCP header compression will not compress the outgoing packet." . In other words. An aggressive sender could choose to resend packets early. The sender can then resend only missing data segments (instead of everything since the first missing packet).C. Because the time stamps are always sent and echoed in both directions and the time-stamp value in the header is always changing. and 8. The receiving TCP host returns selective acknowledgment packets to the sender. To allow TCP header compression over a serial link. 3. Prior to selective acknowledgment. and transfer of audio and video data that are sensitive to delay or packet loss. but such re-sent segments might have already been successfully received. 6. TCP Explicit Congestion Notification The TCP Explicit Congestion Notification (ECN) feature allows an intermediate router to notify end hosts of impending network congestion.www. the receiver can acknowledge packets received out of order. because of limited information available from cumulative acknowledgments. if TCP lost packets 4 and 7 out of an 8-packet window. Use the ip tcp selective-ack command in global configuration mode to enable TCP selective acknowledgment.actualtests. Refer to RFC 2018 for more details about TCP selective acknowledgment. informing the sender of data that has been received. There is no performance impact when the feature is enabled but not used. TCP would receive acknowledgment of only packets 1.D Explanation: TCP Selective Acknowledgment The TCP Selective Acknowledgment feature improves performance if multiple packets are lost from one TCP window of data. a TCP sender could learn about only one lost packet per-round-trip time. Prior to this feature. The TCP selective acknowledgment mechanism helps improve performance. web browsing. Only packets 4 and 7 must be re-sent. and 3. If a response packet (a TCP ACK packet) is not received after the device sends a specific number of probes. the device sends a TCP keepalive packet to the peer with only the Acknowledgment (ACK) flag turned on. Packets 4 through 8 would need to be re-sent. TCP Time Stamp The TCP time-stamp option provides improved TCP round-trip time measurements. 5.

html#GUID-22A82C5F-631F-4390-9838F2E48FFEEA01 QUESTION NO: 11 A network administrator uses IP SLA to measure UDP performance and notices that packets on one router have a higher one-way delay compared to the opposite direction.cisco.www. and connectivity tests. jitter.com/c/en/us/td/docs/ios-xml/ios/ipapp/configuration/xe3s/asr1000/iap-xe-3s-asr1000-book/iap-tcp.cisco. packet loss. Several SNMP traps are available: round trip time.845 UTC Thu Feb 3 2005 Latest operation return code: OK RTT Values: Number Of RTT: 10 RTT Min/Avg/Max: 1/1/1 milliseconds Latency one-way time: Number of Latency one-way Samples: 0 Source to Destination Latency one way Min/Avg/Max: 0/0/0 milliseconds Destination to Source Latency one way Min/Avg/Max: 0/0/0 milliseconds Reference: http://www. one-way latency.com 10 . latency B. connectionless communication D.html "Pass Any Exam. Cisco IOS IP SLAs generates an SNMP trap to alert management applications if this threshold is crossed.actualtests. Which UDP characteristic does this scenario describe? A. jitter Answer: A Explanation: Cisco IOS IP SLAs provides a proactive notification feature with an SNMP trap. Here is a partial sample output from the IP SLA statistics that can be seen: router#show ip sla statistics 1 Round Trip Time (RTT) for Index 55 Latest RTT: 1 ms Latest operation start time: *23:43:31. average jitter." . MOS. nonsequencing unordered packets E.com/en/US/technologies/tk648/tk362/tk920/technologies_white_paper09186a008 02d5efe. starvation C. Reference: http://www. Each measurement operation can monitor against a pre-set performance threshold.Cisco 300-101 Exam TCP connection. Any Time.

www. when WRED is enabled D. Layer 2 Technologies QUESTION NO: 13 Prior to enabling PPPoE in a virtual private dialup network group. TCP flows continually lower their transmission rates. TCP starvation/UDP dominance likely occurs if (TCP-based) Mission-Critical Data is assigned to the same service-provider class as (UDP-based) Streaming-Video and the class experiences sustained congestion. when TCP traffic is in the same class as UDP B." .com 11 . Even if WRED is enabled on the service-provider class. which task must be completed? "Pass Any Exam.Cisco 300-101 Exam QUESTION NO: 12 Under which condition does UDP dominance occur? A. TCP transmitters throttle back flows when drops are detected. When TCP flows are combined with UDP flows within a single service-provider class and the class experiences congestion. when UDP flows are assigned a lower priority queue C. most UDP transmitters are completely oblivious to drops and. Any Time. the same behavior would be observed because WRED (for the most part) manages congestion only on TCP-based flows. when ACLs are in place to block TCP traffic Answer: A Explanation: Mixing TCP with UDP It is a general best practice to not mix TCP-based traffic with UDP-based traffic (especially Streaming-Video) within a single service-provider class because of the behaviors of these protocols during periods of congestion. never lower transmission rates because of dropping. potentially giving up their bandwidth to UDP flows that are oblivious to drops.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/QoS_SRND/QoSSRND-Book/VPNQoS.actualtests. thus. Specifically.cisco. This effect is called TCP starvation/UDP dominance.html Topic 2. and retransmission capabilities. Reference: http://www. Although some UDP applications have application-level windowing. flow control.

SUMMARY STEPS 1. Execute the no switchport command. vpdn enable 4. vpdn-group name 5. "Pass Any Exam.www. C. Answer: B Explanation: Enabling PPPoE in a VPDN Group Perform this task to enable PPPoE in a virtual private dial-up network (VPDN) group." . configure terminal 3. B. enable 2. request-dialin 6.actualtests. Execute the vpdn enable command.Cisco 300-101 Exam A.com Step 3 12 . Enable QoS FIFO for PPPoE support. • Enter your password if prompted. Step 2 configure terminal Example: Router# configure terminal Enters global configuration mode.2(13)T. Any Time. D. protocol pppoe DETAILED STEPS Command or Action Purpose Step 1 enable Example: Router> enable Enables privileged EXEC mode. Disable CDP on the interface. Restrictions This task applies only to releases prior to Cisco IOS Release 12.

Cisco 300-101 Exam Step 4 vpdn-group name Example: Router(config)# vpdn-group group1 Associates a VPDN group with a customer or VPDN profile." . Step 5 request-dialin Example: Router(config-vpdn)# request-dialin Creates a request-dialin VPDN subgroup. Step 6 protocol pppoe Example: Router(config-vpdn-req-in)# protocol pppoe Enables the VPDN subgroup to establish PPPoE Reference: http://www.com 13 . PAP B. and the host name of the local router. IPsec D. The challenge packet consists of an ID. in combination with PPPoE. the access server sends a CHAP packet to the remote device. the two authentication options are PAP and CHAP. ESP Answer: D Explanation: With PPPoE. a random number. Which technology.www. dot1x C. and the random number. The CHAP packet requests or "challenges" the remote device to respond.html QUESTION NO: 14 A network engineer has been asked to ensure that the PPPoE connection is established and authenticated using an encrypted password.actualtests. and then encrypts all of it using the remote device's "Pass Any Exam. Any Time.com/en/US/docs/ios/12_2t/12_2t2/feature/guide/ftpppoec_support_TSD_Island_o f_Content_Chapter. When the remote device receives the challenge packet. can be used for authentication in this manner? A. CHAP E. the remote device's password. When CHAP is enabled on an interface and a remote device attempts to connect to it. it concatenates the ID.cisco.

the connection is still brought up and set as persistent. The access server then encrypts the concatenated information with the newly retrieved password—if the result matches the result sent in the response packet. If interesting traffic arrives before the timer expires. it uses the name it received to retrieve a password stored in its user database. authentication succeeds." . The remote device sends the results back to the access server.com 14 . Any Time. When the access server receives the response. "Pass Any Exam. When configured. The retrieved password should be the same password the remote device used in its encryption process. the dialer persistent command starts a timer when the dialer interface starts up and starts the connection when the timer expires. dialer persistent. or you can set a custom timer interval. This prevents other devices from stealing it and gaining illegal access to the ISP's network. TCP Adjust B.cisco. Dialer Persistent C. half-bridging E. even if no interesting traffic exists. Peer Neighbor Route Answer: B Explanation: A new interface configuration command. use the following commands beginning in global configuration mode: Command Purpose Step 1 Router(config)# interface dialer number Creates a dialer interface and enters interface configuration mode.actualtests.html QUESTION NO: 15 A corporate policy requires PPPoE to be enabled and to maintain a connection with the ISP. along with the name associated with the password used in the encryption process. Reference: http://www. To configure a dialer interface as persistent.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfathen. Which feature can be used to accomplish this task? A.Cisco 300-101 Exam password. PPPoE Groups D. The benefit of using CHAP authentication is that the remote device's password is never transmitted in clear text (encrypted). The command provides a default timer interval.www. allows a dial-on-demand routing (DDR) dialer profile connection to be brought up without being triggered by interesting traffic.

actualtests. Step 3 Router(config-if)# encapsulation type Specifies the encapsulation type.cisco. even in the absence of interesting traffic.com 15 . Reference: http://www. Step 8 Router(config-if)# dialer remote-name user-name (Optional) Specifies the authentication name of the remote router on the destination subnetwork for a dialer interface.www." . Step 7 Router(config-if)# dialer-list dialer-group protocol protocol-name {permit | deny | list access-listnumber} Specifies an access list by list number or by protocol and list number to define the interesting packets that can trigger a call.com/c/en/us/td/docs/ios/dial/configuration/guide/12_4t/dia_12_4t_book/dia_dialer _persist.Cisco 300-101 Exam Step 2 Router(config-if)# ip address address mask Specifies the IP address and mask of the dialer interface as a node in the destination network to be called. Step 4 Router(config-if)# dialer string dial-string class class-name Specifies the remote destination to call and the map class that defines characteristics for calls to this destination. Any Time. Step 6 Router(config-if)# dialer-group group-number Assigns the dialer interface to a dialer group. Step 9 Router(config-if)# dialer persistent [delay [initial] seconds | max-attempts number] Forces a dialer interface to be connected at all times. Step 5 Router(config-if)# dialer pool number Specifies the dialing pool to use for calls to this destination.html QUESTION NO: 16 Which PPP authentication method sends authentication information in cleartext? "Pass Any Exam.

The host checks the response against its own calculation of the expected hash value. PAP authentication does not provide any protection against playback and line sniffing. the table is then used to supply the next-hop protocol address or the DLCI for outgoing traffic. The remote node responds with a value calculated using a one-way hash function. After the PPP link is established.html "Pass Any Exam. otherwise.www.cisco. Reference: http://www. PAP Answer: D Explanation: PAP authentication involves a two-way handshake where the username and password are sent across the link in clear text. CDPCP C.com/c/en/us/td/docs/ios/12_2/wan/configuration/guide/fwan_c/wcffrely. periodically verifies the identity of the remote node using a three-way handshake.com 16 . dynamic DLCI mapping Answer: A Explanation: Dynamic address mapping uses Frame Relay Inverse ARP to request the next-hop protocol address for a specific connection." . Responses to Inverse ARP requests are entered in an address-to-DLCI mapping table on the router or access server. Reference: http://www. MS CHAP B. If the values match. given its known DLCI.Cisco 300-101 Exam A.html QUESTION NO: 17 Which protocol uses dynamic address mapping to request the next-hop protocol address for a specific connection? A. static DLCI mapping C. the connection is terminated. the host sends a "challenge" message to the remote node. hence.actualtests. on the other hand.com/c/en/us/support/docs/wan/point-to-point-protocol-ppp/10241-pppcallin-hostname. the authentication is acknowledged.cisco. Frame Relay inverse ARP B. Frame Relay broadcast queue D. Any Time. CHAP authentication. CHAP D.

40 Answer: A Explanation: Before you troubleshoot any OSPF neighbor-related issues on an NBMA network. Active Authentication Phase and PPP Session Phase B.actualtests.cisco. Passive Discovery Phase and PPP Session Phase "Pass Any Exam.com 17 . Any Time. 30 D.com/c/en/us/support/docs/ip/open-shortest-path-first-ospf/1369322. it is important to remember that an NBMA network can be configured in these modes of operation with the ip ospf network command: The Hello and Dead Intervals of each mode are described in this table: Network Type Hello Interval (secs) Dead Interval (secs) Point-to-Point 10 40 Point-to-Multipoint 30 120 Broadcast 10 40 Non-Broadcast 30 120 Reference: http://www." . 10 B.html QUESTION NO: 19 PPPoE is composed of which two phases? A.www. 20 C.Cisco 300-101 Exam QUESTION NO: 18 What is the default OSPF hello interval on a Frame Relay point-to-point network? A.

PPP options are negotiated and authentication is not performed. "Pass Any Exam. PPP options are negotiated and authentication is performed. Layer 3 Technologies QUESTION NO: 21 Refer to the exhibit. Once the link setup is completed.www. PPPoE functions as a Layer 2 encapsulation method that allows data to be encrypted over the PPP link within PPPoE headers. PPP options are not negotiated and authentication is performed. B. Once the link setup is completed. Active Authorization Phase and PPP Session Phase D. PPP options are automatically enabled and authorization is performed. Once the link setup is completed." .cisco. Active Discovery Phase and PPP Session Phase Answer: D Explanation: PPPoE is composed of two main phases: Reference: http://www.actualtests.html QUESTION NO: 20 Which statement is true about the PPP Session Phase of PPPoE? A. Any Time.Cisco 300-101 Exam C.html Topic 3. PPPoE functions as a Layer 4 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.com 18 . PPPoE functions as a Layer 2 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asa-vpncli/vpn-pppoe. C.cisco. PPPoE functions as a Layer 3 encapsulation method that allows data to be transferred over the PPP link within PPPoE headers.com/c/en/us/td/docs/security/asa/asa92/configuration/vpn/asa-vpncli/vpn-pppoe. Once the link setup is completed. Answer: D Explanation: PPPoE is composed of two main phases: Reference: http://www. D.

B." .0/24 network. The 10.0.0. Any Time. Answer: E Explanation: You can filter what individual routes are sent (out) or received (in) to any interface within your EIGRP configuration.0/8 network is missing from Router B. Router B will not advertise the 10.16.16.0.0/8 network will not be in the routing table on Router B.0/16 network will be blocked by the ACL.0.Cisco 300-101 Exam Which one statement is true? A.www. Traffic from the 172. C.0/8 network can successfully ping users on the 192.0.168. Which message is required to obtain a global unicast address when a router is present? A.0.5.5.0.0. but users on the 192.actualtests.0. YOU won't know about the route and therefore won't send it to anyone else downstream. QUESTION NO: 22 A router with an interface that is configured with ipv6 address autoconfig also has a link-local address assigned. E.0.0.com 19 .0. If you filter outbound.0/16 route and therefore won't send it to anyone else downstream.168.0/8 network because it is blocked by the ACL.0/8 network. If you filter inbound. Users on the 10. D.0/24 cannot successfully ping users on the 10.0. The 10.0/8 network will not be advertised by Router B because the network statement for the 10.0. DHCPv6 request "Pass Any Exam. One example is noted above. the next neighbor(s) will not know about anything except the 172.

420F. Hence. At this stage. The interface identifier replaces the right-most zeroes of the link-local prefix. the node performs the Duplicate Address Detection mechanism to see if any other node is using the same link-local address on the link.Before the link-local address can be assigned to the interface. hosts and routers) begin the process by generating a link-local address for the interface. If no routers are present. further tasks are performed only by the hosts. It is formed by appending the interface identifier to well-known link-local prefix FE80 :: 0. the address is a duplicate address and must not be used.The autoconfiguration on the routers stop at this stage.com 20 .0007 subnet 2001:DB8:0:1::/64 Which IPv6 addresses should the engineer add to the documentation? "Pass Any Exam. If a node responds with a Neighbor Advertisement message with tentative address as the target address. the Router Advertisements notify what sort of configurations the hosts need to do and the hosts receive a global unicast IPv6 address. Any Time. Reference: https://sites. Nodes (both. If routers are present.com/site/amitsciscozone/home/important-tips/ipv6/ipv6-statelessautoconfiguration QUESTION NO: 23 An engineer has configured a router to use EUI-64.Cisco 300-101 Exam B.actualtests. it has IP-connectivity to other neighbors on this link. and was asked to document the IPv6 address of the router.Once the node verifies that its tentative address is unique on the link. The routers will need manual configuration (or stateful configuration) to receive site-local or global addresses. The router has the following interface parameters: mac address C601. manual configuration is required. It does this by sending a Neighbor Solicitation message with target address as the "tentative" address and destination address as the solicitednode multicast address corresponding to this tentative address.The next phase involves obtaining Router Advertisements from routers if any routers are present on the link. a stateful configuration is required. redirect Answer: B Explanation: Autoconfiguration is performed on multicast-enabled links only and begins when a multicastenabled interface is enabled (during system startup or manually). neighbor-solicitation D. it assigns that link-local address to the interface." . router-advertisement C.www.google.

as per RFC2373. the address is locally administered and if 1.Cisco 300-101 Exam A." .actualtests. The reason for inverting can be found in RFC4291 section 2. It is worth noticing that in the OUI portion. Any Time.1. the seventh bit from the left. Therefore. it maintains its original scope (global unique address is still global unique and vice versa). Reference: https://supportforums. 2001:DB8:0:1:FE80:C601:420F:7 D.www.com 21 . This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. 2001:DB8:0:1:C601:42FE:800F:7 Answer: A Explanation: Extended Unique Identifier (EUI). IEEE has chosen FFFE as a reserved value which can only appear in EUI-64 generated from the EUI-48 MAC address. or the universal/local (U/L) bit. The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. Next. 2001:DB8:0:1:FFFF:C601:420F:7 C. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. The Mac address is first separated into two 24-bits. needs to be inverted. The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. If 0. when the bit is inverted. the address is globally unique.cisco. 2001:DB8:0:1:C601:42FF:FE0F:7 B.5.com/document/100566/understanding-ipv6-eui-64-bitaddress QUESTION NO: 24 "Pass Any Exam. Here is an example showing how the Mac Address is used to generate EUI. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). the globally unique addresses assigned by the IEEE has always been set to 0 whereas the locally created addresses has 1 configured. This bit identifies whether this interface identifier is universally or locally administered.

D. which caused the neighbor relationships to fail. C.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/ire_book/ire_a1." . use the autonomous-system command in address-family configuration mode. Answer: A Explanation: To configure the autonomous-system number for an Enhanced Interior Gateway Routing Protocol (EIGRP) routing process to run within a VPN routing and forwarding (VRF) instance. What caused this issue? A. Answer: C Explanation: OSPFv3 uses link-local IPv6 addresses for neighbor discovery and other features.www. IPv6 traffic filtering can be implemented only on SVIs.com/c/en/us/td/docs/switches/datacenter/sw/5_x/nxos/unicast/configuration/guide/l3_cli_nxos/l3_ospfv3. Any Time. The link-local addresses that were used by OSPFv3 were explicitly denied. shortly after implementing the traffic filter.com 22 . so if any IPv6 traffic filters are implemented be sure to include the link local address so that it is permitted in the filter list. use the no form of this command. It sets the global BGP autonomous system number. It sets the EIGRP autonomous system number in a VRF. B. Reference: http://www. D. The traffic filter is blocking all ICMPv6 traffic.cisco. C. However. an IPv6 traffic filter was configured under various interfaces on the local router. The global anycast address must be added to the traffic filter to allow OSPFv3 to work properly.cisco. It sets the BGP autonomous system number in a VRF. autonomous-system autonomous-system-number no autonomous-system autonomous-system-number Reference: http://www. It sets the global EIGRP autonomous system number.Cisco 300-101 Exam For security purposes.actualtests.html# wp1062796 "Pass Any Exam. B. OSPFv3 neighbor adjacencies were lost.html QUESTION NO: 25 What is the purpose of the autonomous-system {autonomous-system-number} command? A. To remove the autonomous-system for an EIGRP routing process from within a VPN VRF instance.

cisco. • The switch receives a DHCP packet that includes a relay agent IP address that is not 0. DHCP messages where the destination MAC and client MAC do not match Answer: B Explanation: The switch validates DHCP packets received on the untrusted interfaces of VLANs with DHCP snooping enabled. "Pass Any Exam.0. DHCPACK.actualtests. The switch forwards the DHCP packet unless any of the following conditions occur (in which case the packet is dropped): • The switch receives a packet (such as a DHCPOFFER. traffic from a trusted DHCP server to client D.com 23 . you can enable the DHCP option-82 on untrusted port feature. Reference: http://www. DHCP messages where the source MAC and client MAC do not match C. which enables untrusted aggregationswitch ports to accept DHCP packets that include option-82 information. • The switch receives a DHCPRELEASE or DHCPDECLINE message from an untrusted host with an entry in the DHCP snooping binding table.www. DHCPNAK. discover messages B.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/122SX/configuration/guide/book/snoodhcp.0. or DHCPLEASEQUERY packet) from a DHCP server outside the network or firewall. and the source MAC address and the DHCP client hardware address do not match. and the interface information in the binding table does not match the interface on which the message was received.Cisco 300-101 Exam QUESTION NO: 26 Which type of traffic does DHCP snooping drop? A.0. To support trusted edge switches that are connected to untrusted aggregation-switch ports. This check is performed only if the DHCP snooping MAC address verification option is turned on. Configure the port on the edge switch that connects to the aggregation switch as a trusted port. • The switch receives a packet on an untrusted interface.html QUESTION NO: 27 Refer to the exhibit." . Any Time.

8.8.2.0.0/24 network out of FastEthernet 0/0? A.8.0.2.9. distribute list 2 out D.0/24 C.0/24 network. allowing only 1.com 24 .0. so only a /24 is both greater than or equal to 24 and less than or equal to 24.Cisco 300-101 Exam Which command only announces the 1." .0/16 D.0.” QUESTION NO: 28 Which prefix is matched by the command ip prefix-list name permit 10.3.0/24 B. Any Time.0. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more specific. distribute list 1 out FastEthernet0/0 C.3. so the correct command is “distribute list 2 out FastEthernet0/0.8.0/16 ge 24 le 24? A.8.x.0. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface.0/24. 10.8.0/23 Answer: B Explanation: With prefix lists.actualtests.www.0/8 networks.0. where X is any value in the 0-255 range. distribute list 1 out B.0. "Pass Any Exam. 10.1. Only the choice of 10. 10.24 matches this. 10. whereas access list 1 permits all 1. This translate to any prefix in the 10.

After debugging IPv6 packets.actualtests. Any Time.com 25 ." . what do you conclude about these IPv6 addresses? A.cisco. the message "not a router" is found in the output.html QUESTION NO: 30 After you review the output of the command show ipv6 interface brief. not a router Message sent when IPv6 unicast routing is not enabled. Answer: D Explanation: show ipv6 traffic Field Descriptions Field Description source-routed Number of source-routed packets. "Pass Any Exam. Based on this information.www. C. D. An IPv6 traffic filter is blocking the networks from being learned via the Router B interface that is connected to Router A. Reference: http://www. format errors Errors that can result from checks performed on header fields. IEEE EUI-64 was implemented when assigning IPv6 addresses on the device. the version number. truncated Number of truncated packets. The networks were not advertised properly under the OSPFv3 process. Why is the routing information not being learned by Router B? A. B. IPv6 unicast routing is not enabled on Router A or Router B.com/c/en/us/td/docs/ios/ipv6/command/reference/ipv6_book/ipv6_16.Cisco 300-101 Exam QUESTION NO: 29 Router A and Router B are configured with IPv6 addressing and basic routing capabilities using OSPFv3. and packet length. you see that several IPv6 addresses have the 16-bit hexadecimal value of "FFFE" inserted into the address. OSPFv3 timers were adjusted for fast convergence. The networks that are advertised from Router A do not show up in Router B's routing table.

or the universal/local (U/L) bit. "Pass Any Exam. the seventh bit from the left. IPv6 unicast forwarding was enabled. the globally unique addresses assigned by the IEEE has always been set to 0 whereas the locally created addresses has 1 configured. it maintains its original scope (global unique address is still global unique and vice versa).5. The reason for inverting can be found in RFC4291 section 2. Here is an example showing how a the Mac Address is used to generate EUI. This bit identifies whether this interface identifier is universally or locally administered. The IPv6 universal/local flag (bit 7) was flipped. the address is globally unique.Cisco 300-101 Exam B.1. The Mac address is first separated into two 24-bits. This feature is a key benefit over IPv4 as it eliminates the need of manual configuration or DHCP as in the world of IPv4. with one being OUI (Organizationally Unique Identifier) and the other being NIC specific. allows a host to assign iteslf a unique 64-Bit IP Version 6 interface identifier (EUI-64). The 16-bit 0xFFFE is then inserted between these two 24-bits to for the 64-bit EUI address. the address is locally administered and if 1. IPv6 addresses containing "FFFE" indicate that the address is reserved for multicast. Answer: A Explanation: Extended Unique Identifier (EUI).www. Therefore. Any Time. needs to be inverted.actualtests. It is worth noticing that in the OUI portion. as per RFC2373. D. Next. C." . The IPv6 EUI-64 format address is obtained through the 48-bit MAC address. when the bit is inverted. E. The addresses were misconfigured and will not function as intended. IEEE has chosen FFFE as a reserved value which can only appear in EUI-64 generated from the an EUI-48 MAC address.com 26 . but IPv6 Cisco Express Forwarding was disabled. If 0.

we have a fully functional EUI-64 format address. B.com/document/100566/understanding-ipv6-eui-64-bitaddress QUESTION NO: 31 A packet capture log indicates that several router solicitation messages were sent from a local host on the IPv6 segment." . Any Time.cisco. the unicast address of the interface sending the router solicitation message is used as the source address in the message. Router acknowledgment messages will be forwarded upstream. Router solicitation messages. All local host traffic will be redirected to the router with the lowest ICMPv6 signature. are sent by hosts at system startup so that the host can immediately autoconfigure without needing to wait for the next scheduled RA message. D. Routers on the IPv6 segment will respond with an advertisement that provides an external path from the local subnet. the source address in router solicitation messages is usually the unspecified IPv6 address (0:0:0:0:0:0:0:0). C. Duplicate Address Detection will determine if any other local host is using the same IPv6 address for communication with the IPv6 routers on the segment. Answer: B Explanation: Router Advertisements (RA) are sent in response to router solicitation messages. Given that router solicitation messages are usually sent by hosts at system startup (the host does not have a configured unicast address). What is the expected acknowledgment and its usage? A.actualtests. as well as certain data.com 27 . If the host has a configured unicast address. The destination address in "Pass Any Exam. Reference: https://supportforums. where the DHCP server will allocate addresses to the local host. which have a value of 133 in the Type field of the ICMP packet header.www.Cisco 300-101 Exam Once the above is done. which is statically defined by the network administrator. such as prefix discovery.

actualtests. the destination address in the RA message is the unicast address of the source of the router solicitation message.com/c/en/us/td/docs/ios/ipv6/configuration/guide/12_4t/ipv6_12_4t_book/ip6addrg_bsc_con. • The routing protocol must be enabled for each interface using the most specific wildcard mask "Pass Any Exam. The SO/O interface on Chicago and the SO/1 interface on NewYork are in Area 0.com's corporate implementation guidelines require: • The OSPF process ID for all routers must be 10. OSPF has been configured on routers Chicago and NewYork. they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router. . • The routing protocol for each interface must be enabled under the routing process. ROUTE. RA messages typically include the following information: • One or more onlink IPv6 prefixes that nodes on the local link can use to automatically configure their IPv6 addresses • Lifetime information for each prefix included in the advertisement • Sets of flags that indicate the type of autoconfiguration (stateless or stateful) that can be completed • Default router information (whether the router sending the advertisement should be used as a default router and." . The loopbackO interface on NewYork is in Area 1. the amount of time (in seconds) the router should be used as a default router) • Additional information for hosts.www. Any Time. When an RA is sent in response to a router solicitation. if so. However.Cisco 300-101 Exam router solicitation messages is the all-routers multicast address with a scope of the link.com is a small IT corporation that is attempting to implement the network shown in the exhibit.html QUESTION NO: 32 CORRECT TEXT Route. Currently the implementation is partially completed.com 28 possible.cisco. You have been asked to complete the implementation to allow this ping. such as the hop limit and MTU a host should use in packets that it originates Reference: http://www.

168.54.168.10/30 .16.9/30 .actualtests.168.Cisco 300-101 Exam Network Information Seattle S0/0 192.16.16.5/30 .Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192. Any Time.6/30 .com 29 .189.Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 192.168.www." .Link between Chicago and NewYork S0/1 192.189 Secret Password: cisco "Pass Any Exam.54.Link between Chicago and NewYork Loopback0 172.

www." .Cisco 300-101 Exam "Pass Any Exam.com 30 . Any Time.actualtests.

and router hostnames may change.Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam.5/30 in order to configure the OSPF. but the overall solution is the same.168. OSPF areas and process ID.com 31 .168. the IP addressing. we need to find the network address and wildcard mask of 192.actualtests.5/30. Seattle’s S0/0 IP Address is 192.5 /30 Subnet Mask: 255. So.www.252 Here subtract 252 from 2565.168. 256-252 = 4.16. IP Address: 192.16. hence the subnets will increment by 4. First.16. Any Time.255. find the 4th octet of the Network Address: "Pass Any Exam." .255.

Any Time.0. Now we configure OSPF using process ID 10 (note the process ID may change to something else in real exam).168.3 area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route).actualtests.5) belongs to subnet 1 (4 to 7).16.com 32 .16. Seattle(config-router)#area 21 stub Seattle(config-router)#end "Pass Any Exam.Cisco 300-101 Exam The 4th octet of IP address (192.4 Broadcast Address: 192.168." . Network Address: 192.0. Subnet Mask: (Network Bits – 1’s.7 Lets find the wildcard mask of /30.16. Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192.168.4 0.www.16. Host Bits – 0’s) Lets find the wildcard mask of /30.168.

Your task is to identify and resolve the cause of connectivity failure with the remote office router R3.www.3 area 21 Again. Another network professional was tasked with implementing this solution.0. JS Industries is interested in using route summarization along with the EIGRP Stub Routing feature to increase network stability while reducing the memory usage and bandwidth utilization to R3.16. However.actualtests. QUESTION NO: 33 CORRECT TEXT JS Industries has expanded their business with the addition of their first remote office. Any Time." . The remote office router (R3) was previously configured and all corporate subnets were reachable from R3.0.Cisco 300-101 Exam Seattle#copy run start Chicago Configuration: Chicago>enable Password: cisco Chicago#conf t Chicago(config)#router ospf 10 We need to add Chicago’s S0/1 interface to Area 21 Chicago(config-router)#network 192. Currently EIGRP is configured on all routers R2. Therefore we want to configure area 21 as a totally stubby area. R3. Chicago(config-router)#area 21 stub no-summary Chicago(config-router)#end Chicago#copy run start The other interface on the Chicago router is already configured correctly in this scenario. in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been lost. we must stop LSA Type 5 if we don’t want to send external routes.4 0. area 21 should not receive any external or inter-area routes (except the default route). we have to stop LSA Type 3 and Type 4. and R4 in the network. as well as the New York router so there is nothing that needs to be done on that router.com 33 . In order to accomplish this. Once the issue has been resolved you should complete the task by configuring route summarization only to the remote office router R3.168. And if we don’t want to send inter-area routes. "Pass Any Exam.

Cisco 300-101 Exam You have corrected the fault when pings from R2 to the R3 LAN interface are successful. "Pass Any Exam.0." .www.actualtests.0.com 34 . and the R3 IP routing table only contains 2 10. Any Time.0 subnets.

" .com 35 .Cisco 300-101 Exam Answer: Here are the solution as below: Explanation: First we have to figure out why R3 and R4 can not communicate with each other. Any Time. Use the show running-config command on router R3.actualtests. "Pass Any Exam.www.

Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default.com 36 ." .0.0.www.0 network. Any Time.actualtests. This keyword will also prevent any type of route from being sent. Next we will configure router R3 so that it has only 2 subnets of 10.Cisco 300-101 Exam Notice that R3 is configured as a stub receive-only router. Therefore we will remove this command and replace it with the eigrp stub command: R3# configure terminal R3(config)# router eigrp 123 R3(config-router)# no eigrp stub receive-only R3(config-router)# eigrp stub R3(config-router)# end Now R3 will send updates containing its connected and summary routes to other routers. Use the show ip route command on R3 to view its routing table: "Pass Any Exam. The receive-only keyword will restrict the router from sharing any of its routes with any other router in that EIGRP autonomous system.

0.2.0." .3. notice that if you use another network than 10.0.0.0.0. Therefore.www. There is one interesting thing about the output of the show ip route shown above: the 10.0 Now we jump back to R3 and use the show ip route command to verify the effect.255.0 255.0 255.2.0 you will leave a /16 network in the output of the show ip route command. which is a directly connected network of R3. In the output if we don’t see the summary line (like 10.2.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.255. to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet.255. we will use the ip summary-address eigrp 123 10. if you use the command ip summary-address eigrp 123 10.0/24.0.0. Any Time.0 at the interface s0/0 of R4 to summary. In conclusion. for example.0 255.2.Cisco 300-101 Exam Because we want the routing table of R3 only have 2 subnets so we have to summary subnetworks at the interface which is connected with R3. the s0/0 interface of R4.actualtests.0. We can’t get rid of it in the routing table no matter what technique we use to summary the networks.0 255. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 10. Just for your information.0 so that all the ping can work well. the output is shown below: Note: Please notice that the IP addresses and the subnet masks in your real exam might be different so you might use different ones to solve this question.255.0.2.0. "Pass Any Exam.0/8 to summary.com 37 .0.

Cisco 300-101 Exam

But in your real exam, if you don’t see the line "10.0.0.0/8 is a summary, Null0" then you can
summarize using the network 10.2.0.0/16. This summarization is better because all the pings can
work well.
Finally don’t forget to use the copy run start command on routers R3 and R4 to save the
configurations.
R3(config-if)# end
R3# copy run start
R4(config-if)# end
R4# copy run start
If the “copy run start” command doesn’t work then use “write memory.”

QUESTION NO: 34 CORRECT TEXT
ROUTE.com is a small IT corporation that has an existing enterprise network that is running IPv6
0SPFv3. Currently OSPF is configured on all routers. However, R4's loopback address (FEC0:4:4)
cannot be seen in R1's IPv6 routing table. You are tasked with identifying the cause of this fault
and implementing the needed corrective actions that uses OPSF features and does not change
the current area assignments. You will know that you have corrected the fault when R4's loopback
address (FEC0:4:4) can be seen in RTs IPv6 routing table.
Special Note: To gain the maximum number of points you must remove all incorrect or unneeded
configuration statements related to this issue.

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Cisco 300-101 Exam

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actualtests.Cisco 300-101 Exam Answer: Here is the solution below: Explanation: To troubleshoot the problem. first issue the show running-config on all of 4 routers. Any Time. Pay more attention to the outputs of routers R2 and R3 The output of the "show running-config" command of R2: The output of the "show running-config" command of R3: "Pass Any Exam.www." .com 41 .

R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3. QUESTION NO: 35 CORRECT TEXT You are a network engineer with ROUTE. we learned that the OSPF process ID of R3 is 1 and we have to disable the wrong configuration of "area 54 virtual-link 4." . use the show ipv6 route command. Make sure to remove the incorrect configuration statements to get the full points. we can use a virtual link to connect to the backbone through a non-backbone area.Cisco 300-101 Exam We knew that all areas in an Open Shortest Path First (OSPF) autonomous system must be physically connected to the backbone area (Area 0).2.3.4"): R3>enable R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4. not "show ip route".com has two connections to the Internet.www. we learned that the OSPF process ID of R2 is 1): R2>enable R2#configure terminal R2(config)#ipv6 router ospf 1 R2(config-rtr)#area 11 virtual-link 3.2 Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4. In some cases.3. the area 11 will become the transit area.3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3.4. routers R2 and R3 must be configured with the area <area id> virtuallink <neighbor router-id>command. ROUTE.4. where this is not possible.3.2.3.3. Therefore.2. The area through which you configure the virtual link is known as a transit area. Note.actualtests. IT policy "Pass Any Exam.2) + Configure virtual link on R3 (from the second output above.4 R3(config-rtr)#area 11 virtual-link 2.4.4. + Configure virtual link on R2 (from the first output above.com. a small IT company. If you want to check the routing information. one via a frame relay link and one via an EoMPLS link.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they work. Any Time.3. not R2's router-id 2.2. too.3.com 42 . In this case.

Choose and configure the appropriate path selection feature to accomplish this task. Answer: We need to configure policy based routing to send specific traffic along a path that is different from the best path in the routing table. You may use the Test Workstation to generate HTTP traffic to validate your solution.www.Cisco 300-101 Exam requires that all outbound HTTP traffic use the frame relay link when it is available.com 43 . All other traffic may use either link. "Pass Any Exam." .actualtests. No static or default routing is allowed. Any Time.

1. "Pass Any Exam.actualtests.100. After that configure the route map and then apply it on the interface to the server in EIGRP network. Any Time. The redundant paths from the OSPF network to the EIGRP network must be available in case of a link failure. Two links have been added that will provide redundancy.1.100. You may add new commands or change default values. One network is using OSPF as its IGP and the other is using EIGRP as its IGP." . R4 has been added to the existing OSPF network to provide the interconnect between the OSPF and EIGRP networks.2 R1(config-route-map)#exit R1(config)#route-map pbr permit 20 3) Apply the route-map on the interface to the server in the EIGRP Network: R1(config-route-map)#exit R1(config)#int fa0/1 R1(config-if)#ip policy route-map pbr R1(config-if)#exit R1(config)#exit Explanation: First you need to configure access list to HTTP traffic and then configure that access list. A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing. You have been tasked with completing the implementation and ensuring that the network requirements are met.16. All traffic must use the shortest path that provides the greatest bandwidth. The network requirements state that you must be able to ping and telnet from loopback 101 on R1 to the OPSF domain test address of 172. a small IT company. They have recently merged two organizations and now need to merge their networks as shown in the topology exhibit.www.Cisco 300-101 Exam Here are the step by Step Solution for this: 1) First create the access list that catches the HTTP traffic: R1(config)#access-list 101 permit tcp any any eq www 2) Configure the route map that sets the next hop address to be ISP1 and permits the rest of the traffic: R1(config)#route-map pbr permit 10 R1(config-route-map)#match ip address 101 R1(config-route-map)#set ip next-hop 10.com. You may not remove or change any of the configuration commands currently on any of the routers. QUESTION NO: 36 CORRECT TEXT You are a network engineer with ROUTE.com 44 . No static or default routing is allowed in either network.

Load. notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. Delay=20000 us. MTU=1500 bytes then we would redistribute as follows: R2#config terminal R2(config)# router ospf 1 R2(config-router)# redistribute eigrp 100 metric-type 1 subnets R2(config-router)#exit R2(config-router)#router eigrp 100 R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500 Note: In fact.Cisco 300-101 Exam Answer: First we need to find out 5 parameters (Bandwidth. Load=1. Any Time. Reliability=255. MTU) of the s0/0/0 interface (the interface of R2 connected to R4) for redistribution: R2#show interface s0/0/0 Write down these 5 parameters.actualtests. these parameters are just used for reference and we can use other parameters with no problem. Load=1. MTU=1500 bytes R3#config terminal R3(config)#router ospf 1 R3(config-router)#redistribute eigrp 100 metric-type 1 subnets R3(config)#exit R3(config-router)#router eigrp 100 R3(config-router)#redistribute ospf 1 metric 10000 100 255 1 1500 Finally you should try to “show ip route” to see the 172." . we get Bandwidth=1544 Kbit. If the delay is 20000us then we need to divide it by 10. For example.16.com 45 . Delay. that is 20000 / 10 = 2000) For R3 we use the show interface fa0/0 to get 5 parameters too R3#show interface fa0/0 For example we get Bandwidth=10000 Kbit. "Pass Any Exam.100.www. Reliability. Reliability=255.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this network. Delay=1000 us.

R2(config-router)# distance eigrp 90 105 This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP external routes to 105.com 46 . but the overall solution is the same.actualtests.www." . which is smaller than the Administrative Distance of OSPF (110) -> the link between R2 & R3 will be preferred to the serial link between R2 & R4. we must put the command below under EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4).Cisco 300-101 Exam Note: If the link between R2 and R3 is FastEthernet link. "Pass Any Exam. Any Time. which is better than R1 -> R2 -> R4. QUESTION NO: 37 You have been asked to evaluate how EIGRP is functioning in a customer network. Note: The actual OPSF and EIGRP process numbers may change in the actual exam so be sure to use the actual correct values.

Cisco 300-101 Exam "Pass Any Exam.actualtests.www.com 47 ." . Any Time.

Any Time.Cisco 300-101 Exam "Pass Any Exam.www." .com 48 .actualtests.

www.Cisco 300-101 Exam Traffic from R1 to R61 s Loopback address is load shared between R1-R2-R4-R6 and R1-R3-R5R6 paths. What is the ratio of traffic over each path? A.actualtests. 1:5 C. 1:1 B. Any Time. 19:80 "Pass Any Exam." . 6:8 D.com 49 .

6” command from R1 and see this: "Pass Any Exam.actualtests.6.1.www. so we issue the “show ip route 150.Cisco 300-101 Exam Answer: D Explanation: First." .6. Any Time.6.com 50 .1. find the IP address of the loopback0 interface on R6: We see that it is 150.

Cisco 300-101 Exam Notice the “traffic share count” shows 19 for the first path. and 80 for the second path.www. "Pass Any Exam. Any Time. QUESTION NO: 38 You have been asked to evaluate how EIGRP is functioning in a customer network.actualtests.com 51 ." .

Any Time.www." .com 52 .Cisco 300-101 Exam "Pass Any Exam.actualtests.

com 53 .www. Any Time.actualtests.Cisco 300-101 Exam "Pass Any Exam." .

Any Time. Distribute-list using a prefix-list C. An ACL using a distance of 255 "Pass Any Exam." .Cisco 300-101 Exam What type of route filtering is occurring on R6 A.actualtests.com 54 .www. Distribute-list using an ACL B. Distribute-list using a route-map D.

com 55 .www. QUESTION NO: 39 You have been asked to evaluate how EIGRP is functioning in a customer network.Cisco 300-101 Exam Answer: A Explanation: The configuration on R6 is as follows: This is a standard distribute list using access list number 1. "Pass Any Exam. Any Time." .actualtests.

Any Time.com 56 .actualtests.www." .Cisco 300-101 Exam "Pass Any Exam.

Cisco 300-101 Exam "Pass Any Exam. Any Time." .com 57 .actualtests.www.

" .com 58 .Cisco 300-101 Exam "Pass Any Exam. Any Time.actualtests.www.

Cisco 300-101 Exam Which key chain is being used for authentication of EIGRP adjacency between R4 and R2? A. CISCO B.com 59 . key D. MD5 Answer: A Explanation: R4 and R2 configs are as shown below: "Pass Any Exam." .actualtests. Any Time.www. EIGRP C.

"Pass Any Exam.www." . Any Time.actualtests.com 60 . QUESTION NO: 40 You have been asked to evaluate how EIGRP is functioning in a customer network.Cisco 300-101 Exam Clearly we see the actual key chain is named CISCO.

" . Any Time.Cisco 300-101 Exam "Pass Any Exam.com 61 .actualtests.www.

" .actualtests.Cisco 300-101 Exam "Pass Any Exam.www. Any Time.com 62 .

actualtests. Any Time.www." .Cisco 300-101 Exam "Pass Any Exam.com 63 .

307456 Answer: C Explanation: R1’s routing table is as follows "Pass Any Exam.46. Any Time." . 333056 B. 1810944 D.Cisco 300-101 Exam What is the advertised distance for the 192.www.0 network on R1? A.168.com 64 . 1938688 C.actualtests.

com 65 .www.168. "Pass Any Exam.actualtests." . QUESTION NO: 41 You have been asked to evaluate how EIGRP is functioning in a customer network.Cisco 300-101 Exam The numbers after the route specify the administrative distance of the route (90 for EIGRP) and the distance metric of that particular route.0 route. which is shows as 1810944 for the 192.46. Any Time.

Cisco 300-101 Exam "Pass Any Exam." .actualtests.com 66 . Any Time.www.

Any Time.Cisco 300-101 Exam "Pass Any Exam.www.com 67 .actualtests." .

com 68 ." .www.actualtests. Any Time.Cisco 300-101 Exam "Pass Any Exam.

com 69 . Any Time. 20 C. 10 B.Cisco 300-101 Exam What percent of R1’s interfaces bandwidth is EIGRP allowed to use? A.actualtests. 40 Answer: B Explanation: The relevant configuration of R1 is shown below: "Pass Any Exam." .www. 30 D.

Cisco 300-101 Exam

ip bandwidth-percent eigrp 1 20
1 = the EIGRP AS
20 = 20% of the bandwidth

QUESTION NO: 42
Scenario:
You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a
customer has about its operation. The customer has disabled your access to the show running"Pass Any Exam. Any Time." - www.actualtests.com

70

Cisco 300-101 Exam
config command.

"Pass Any Exam. Any Time." - www.actualtests.com

71

Cisco 300-101 Exam

"Pass Any Exam. Any Time." - www.actualtests.com

72

actualtests.Cisco 300-101 Exam "Pass Any Exam. Any Time.com 73 .www." .

1601 C. Any Time.3.Cisco 300-101 Exam How old is the Type 4 LSA from Router 3 for area 1 on the router R5 based on the output you have examined? A.3.com 74 . 600 D. 1858 B. 1569 Answer: A Explanation: Part of the “show ip ospf topology” command on R5 shows this: The Link ID of R3 (3." .3) shows the age is 1858.actualtests. "Pass Any Exam.www.

Cisco 300-101 Exam QUESTION NO: 43 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. Any Time. "Pass Any Exam. The customer has disabled your access to the show runningconfig command.www.actualtests.com 75 ." .

" . Any Time.actualtests.Cisco 300-101 Exam "Pass Any Exam.com 76 .www.

www.com 77 . Any Time.Cisco 300-101 Exam "Pass Any Exam." .actualtests.

com 78 . 120. The R2-R3 link OSPF timer values are 30.40 D." . The R1-R3 link OSPF timer values should be 10.Cisco 300-101 Exam Which of the following statements is true about the serial links that terminate in R3 A. R3 is responsible for flooding LSUs to all the routers on the network. Any Time. The R1-R3 link needs the neighbor command for the adjacency to stay up B.40. 120 C. "Pass Any Exam.actualtests.www.

com 79 .www. "Pass Any Exam. The customer has disabled your access to the show runningconfig command. Any Time.actualtests." .Cisco 300-101 Exam Answer: B Explanation: We can see the configured timers using the following command: QUESTION NO: 44 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation.

www.com 80 . Any Time." .Cisco 300-101 Exam "Pass Any Exam.actualtests.

actualtests.Cisco 300-101 Exam "Pass Any Exam." . Any Time.www.com 81 .

" .actualtests.Cisco 300-101 Exam "Pass Any Exam.www.com 82 . Any Time.

" . 1 B. 224 Answer: C Explanation: This can be found using the “show ip ospf” command on R4.www. 5 C. 20 E.actualtests.Cisco 300-101 Exam How many times was SPF algorithm executed on R4 for Area 1? A. 54 F. Look for the Area 1 stats which shows this: "Pass Any Exam. 9 D. Any Time.com 83 .

The customer has disabled your access to the show runningconfig command.Cisco 300-101 Exam QUESTION NO: 45 Scenario: You have been asked to evaluate an OSPF network setup in a test lab and to answer questions a customer has about its operation. "Pass Any Exam." .actualtests.www. Any Time.com 84 .

actualtests." .Cisco 300-101 Exam "Pass Any Exam.com 85 . Any Time.www.

Any Time.actualtests.Cisco 300-101 Exam "Pass Any Exam.www." .com 86 .

Any Time." .actualtests.www.Cisco 300-101 Exam "Pass Any Exam.com 87 .

inspect their routing tables and determine which statement is true? A.actualtests. Only R5's loopback is present in R6's Routing table Answer: A Explanation: Here are the routing tables of R5 and R6: "Pass Any Exam.com 88 . Only R5's loopback is present in R5's Routing table D. R5's Loopback and R6's Loopback are both present in R6's Routing table C.www. Any Time." . R5's Loopback and R6's Loopback are both present in R5's Routing table B.Cisco 300-101 Exam Areas of Router 5 and 6 are not normal areas. Only R6's loopback is present in R5's Routing table E.

www. VPN Technologies "Pass Any Exam.Cisco 300-101 Exam Topic 4.com 89 . Any Time.actualtests." .

2 tunnel destination 209. Any Time.1 tunnel-mode dynamic D.161. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint. a p2p GRE tunnel may connect to an mGRE tunnel.230 255. interface fa0/0 bandwidth 1536 ip address 209.165. effectively they have the tunnel mode gre command. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination. The configuration of mGRE on one side of a tunnel does not have any relation to the tunnel properties that might exist at the exit points.255. an mGRE tunnel requires NHRP to resolve the tunnel endpoints.230 255. An mGRE interface does not have a configured destination. Besides allowing for multiple destinations.255. interface Tunnel0 bandwidth 1536 ip address 209.231 255.200.165.201.200.200. tunnel interfaces by default are point-topoint (p-p) using GRE encapsulation. interface fa 0/0 bandwidth 1536 ip address 209. This command is used instead of the tunnel destination x.x. which is not seen in the configuration because it is the default.www.x.224 tunnel source 192.com 90 .231 255.x found with p2p GRE tunnels.165.165." .165.224 tunnel source Serial0/0 tunnel mode gre multipoint B. Note.255.200.165.168. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch.255. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 "Pass Any Exam.255.Cisco 300-101 Exam QUESTION NO: 46 A company has just opened two remote branch offices that need to be connected to the corporate network.201.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations.255. Conversely.255. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A. interface Tunnel0 bandwidth 1536 ip address 209.224 tunnel source 209.224 tunnel mode gre multipoint C.actualtests.255.

2 "Pass Any Exam.2 for traffic that goes between networks 20.255.: 12.255.0/0/0) remote ident (addr/mask/prot/port): (10. Any Time. failed: 0.1.255.0/255.1.0/0/0) current_peer: 12.Cisco 300-101 Exam ip address 10.1. inbound crypto map B.1.) A.1 and 12.1. #pkts verify 7760382 #pkts compressed: 0.1.1.255. #pkts compr.10 255.1.1. #pkts digest 7767918 #pkts decaps: 7760382.1.1. invalid identity packets Answer: A. #pkts decrypt: 7760382.C Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.www.1 local ident (addr/mask/prot/port): (20.B.62. untagged packets F.1.0/255. #pkts encrypt: 7767918. remote crypto endpt.1.255. #pkts decompress failed: 0.html QUESTION NO: 47 A network engineer executes the show crypto ipsec sa command.} #pkts encaps: 7767918. #pkts decompressed: 0 #pkts not compressed: 0. #send errors 1.0.actualtests. tagged packets E.1.1.0 and 10.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www.com/c/en/us/td/docs/solutions/Enterprise/WAN_and_MAN/DMVPDG/DMVPN_2_ Phase2.1. local addr.2 PERMIT. #recv errors 0 local crypto endpt.1. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound.1. remaining key lifetime C.1. flags={origin_is_acl. Authentication Header (AH) is not used since there are no AH SAs.1. interface: FastEthernet0 Crypto map tag: test.255.: 12.cisco.1. This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question). Which three pieces of information are displayed in the output? (Choose three.1. 12." . The encrypted tunnel is built between 12.com 91 . path MTU D.

" .1.actualtests.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ikeprotocols/5409-ipsec-debug-00.1.12. crypto map: test sa timing: remaining key lifetime (k/sec): (4608000/52) IV size: 8 bytes replay detection support: Y outbound ah sas: outbound pcp sas: Reference: http://www.html QUESTION NO: 48 Refer to the following output: Router#show ip nhrp detail 10.com 92 .cisco. dynamic.2/8 via 10. Any Time. flow_id: 1443. in use settings ={Tunnel.2 "Pass Any Exam.1. } slot: 0.www. conn id: 3442. expire 01:59:47 TypE. } slot: 0. media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac .2. conn id: 3443.2.Cisco 300-101 Exam path mtu 1500. flow_id: 1444. in use settings ={Tunnel. Tunnel1 created 00:00:12. crypto map: test sa timing: remaining key lifetime (k/sec): (4608000/52) IV size: 8 bytes replay detection support: Y inbound ah sas: inbound pcp sas: inbound pcp sas: outbound esp sas: spi: 0x3D3(979) transform: esp-3des esp-md5-hmac . Flags: authoritative unique nat registered used NBMA address: 10.1.

255 because Cisco does not support aggregation of NBMA information through NHRP. • The interface type and number and how long ago it was created (hours:minutes:seconds). • Flags: – authoritative—Indicates thatAny theExam." .1111. Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10.0.255. Answer: A Explanation: Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp 10.www.1.255.1111.1.Cisco 300-101 Exam What does the authoritative flag mean in regards to the NHRP information? A.com 93 or router that maintains the NBMA-to-IP address mapping for a particular destination. The mapping entry was created in response to an NHRP registration request.2 255. .255.255.1111. NHRPAny information was obtained from the Next Hop Server "Pass Time. Data packets are process switches for this mapping entry.11 10. • The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds).1111.255. NHRP mapping is for networks that are local to this router.1 255. It was obtained directly from the next-hop server.255. B. C. The mask is always 255. • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet. E. D.255.1111. This value is based on the ip nhrp holdtime command. The NHRP mapping entry cannot be overwritten.0.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache.actualtests.255.1111.1111. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10.0. – static—NBMA address was statically configured.1111.1111.0.

Solution When DMVPN tunnels flap.com 94 . check the neighborship between the routers as issues with neighborship formation between routers may cause the DMVPN tunnel to flap. that the GRE tunnel to hub router is not encrypted Answer: A Explanation: DMVPN Tunnel Flaps Intermittently Problem DMVPN tunnel flaps intermittently." . In order to resolve this problem. such as Fast Ethernet.1q encapsulation. PPP D. Frame Relay E. 802.html#Prblm1 QUESTION NO: 50 Which encapsulation supports an interface that is configured for an EVN trunk? A. MPLS F. and port channels. ISL C. a suboptimal routing table C.Cisco 300-101 Exam QUESTION NO: 49 Which common issue causes intermittent DMVPN tunnel flaps? A. Any Time.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ikeprotocols/29240-dcmvpn.cisco. • A single IP infrastructure can be virtualized to provide up to 32 virtual networks end-to-end. Gigabit Ethernet. interface bandwidth congestion D. "Pass Any Exam. Reference: http://www.actualtests. • If an EVN trunk is configured on an interface. you cannot configure VRF-Lite on the same interface. HDLC Answer: A Explanation: Restrictions for EVN • An EVN trunk is allowed on any interface that supports 802.1Q B. make sure the neighborship between the routers is always up. a routing neighbor reachability issue B.www.

thereby enabling support for overlapping IP addresses across multiple EVNs.cisco. routing table C." . Any Time. input a prescribed IP address. Reference: http://www. the trunk interface is identified by the same IP address in different EVN contexts.pdf QUESTION NO: 51 Which three characteristics are shared by subinterfaces and associated EVNs? (Choose three. IP address B.com 95 .cisco. all the subinterfaces and associated EVNs have the same IP address assigned. SSL VPN client access Answer: D Explanation: The Cisco AnyConnect VPN Client provides secure SSL connections to the security appliance for "Pass Any Exam.Cisco 300-101 Exam • OSPFv3 is not supported. IPsec VPN client access C. OSPFv2 is supported. Reference: http://www. and follow the instructions.actualtests. To simplify the configuration process.com/en/US/docs/ios-xml/ios/evn/configuration/xe-3sg/evnoverview.com/c/en/us/td/docs/ios-xml/ios/evn/configuration/xe-3s/evn-xe-3sbook/evn-overview.www. access control lists E. After doing this. EZVPN B. NetFlow configuration Answer: A. the user is able to access company shares.pdf QUESTION NO: 52 A user is having issues accessing file shares on a network. The network engineer advises the user to open a web browser. forwarding table D.) A.B. In other words. VPDN client access D. Which type of remote access did the engineer enable? A.C Explanation: A trunk interface can carry traffic for multiple EVNs. This is accomplished as a result of each EVN having a unique routing and forwarding table.

it downloads the client that matches the operating system of the remote computer. FlexVPN B. NHRP. establishes a secure SSL connection and either remains or uninstalls itself (depending on the security appliance configuration) when the connection terminates. GETVPN D. and Cisco Express Forwarding? A. users must enter the URL in the form https://<address>.html QUESTION NO: 53 Which Cisco IOS VPN technology leverages IPsec. Unless the security appliance is configured to redirect http:// requests to https://. and the security appliance identifies the user as requiring the client. If the user satisfies the login and authentication.actualtests. the client installs and configures itself. After downloading.cisco." . remote users enter the IP address in their browser of an interface configured to accept SSL VPN connections. mGRE. Reference: http://www. GRE.org/wiki/Dynamic_Multipoint_Virtual_Private_Network "Pass Any Exam. DMVPN C.com/c/en/us/support/docs/security/asa-5500-x-series-nextgeneration-firewalls/100936-asa8x-split-tunnel-anyconnect-config. NHRP and IPsec. This dynamic-mesh capability alleviates the need for any load on the hub to route data between the spoke networks.Cisco 300-101 Exam remote users. the browser connects to that interface and displays the login screen. Without a previously installed client. Cisco Easy VPN Answer: B Explanation: Dynamic Multipoint Virtual Private Network (DMVPN) is a dynamic tunneling form of a virtual private network (VPN) supported on Cisco IOS-based routers and Unix-like Operating Systems based on the standard protocols. Using this initial huband-spoke network. tunnels between spokes can be dynamically built on demand (dynamic-mesh) without additional configuration on the hubs or spokes. dynamic routing protocol. no change in the configuration on the hub is required to accept new spokes. After entering the URL.com 96 .www. Any Time. including IPsec (Internet Protocol Security) and ISAKMP (Internet Security Association and Key Management Protocol) peers. This DMVPN provides the capability for creating a dynamic-mesh VPN network without having to pre-configure (static) all possible tunnel end-point peers.wikipedia. DMVPN is combination of the following technologies: Reference: http://en. DMVPN is initially configured to build out a hub-and-spoke network by statically configuring the hubs (VPN headends) on the spokes.

which allows only the single IPv6 IP address of 2001:DB8:0:4::32 to connect using SSH only. which method can you use in combination with the “debug ip packet” command to limit the amount of output data? A. You can use the KRON scheduler. You can use the RITE traffic exporter.com 97 . Any Time. only ssh traffic to vty 0 4 from source all C. E. B.www. D. You can use an extended access list. Answer: C Explanation: "Pass Any Exam. all traffic to vty 0 4 from source all Answer: C Explanation: Here we see that the IPv6 access list called “cisco” is being applied to incoming VTY connections to the router." . You can use an IOS parser. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. You can disable the IP route cache globally.actualtests. QUESTION NO: 55 For troubleshooting purposes.Cisco 300-101 Exam Topic 5. Infrastructure Security QUESTION NO: 54 Which traffic does the following configuration allow? ipv6 access-list cisco permit ipv6 host 2001:DB8:0:4::32 any eq ssh line vty 0 4 ipv6 access-class cisco in A. IPv6 access list has just one entry. C. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D.

Cisco 300-101 Exam The debug ip packet command generates a substantial amount of output and uses a substantial amount of system resources. What is the reason for this? A.www. A packet that matches access-list with the "log" keyword is process switched.com 98 . A large amount of IP traffic is being permitted on the router. A packet that matches access-list with the "log" keyword is fast switched.actualtests.cisco. the network engineer notices that the router CPU utilization has risen to 99 percent." .com/web/about/security/intelligence/acl-logging. D. Reference: http://www.cisco. ACL logging can be CPU intensive and can negatively affect other functions of the network device. There are two primary factors that contribute to the CPU load increase from ACL logging: process switching of packets that match log-enabled access control entries (ACEs) and the generation and transmission of log messages. C. This command should be used with caution in production networks. source address "Pass Any Exam. Unfortunately. B. Reference: http://www. Always use with the access-list command to apply an extended ACL to the debug output. Answer: C Explanation: Logging-enabled access control lists (ACLs) provide insight into traffic as it traverses the network or is dropped by network devices. A packet that matches access-list with the "log" keyword is Cisco Express Forwarding switched.com/c/en/us/support/docs/security/dynamic-multipoint-vpndmvpn/111976-dmvpn-troubleshoot-00.html#4 QUESTION NO: 57 Which address is used by the Unicast Reverse Path Forwarding protocol to validate a packet against the routing table? A. access-list 100 permit ip any any log After applying the access list on a Cisco router.html QUESTION NO: 56 Refer to the following access list. Any Time.

This capability can limit the appearance of spoofed addresses on a network. and VRF mode B. loose mode. strict mode. strict mode. For Internet service providers (ISPs) that provide public access. broadcast mode. "Pass Any Exam. When administrators use Unicast RPF in strict mode. its customer. broadcast mode.com 99 .www. Dropping this legitimate traffic could occur when asymmetric routing paths are present in the network. a number of common types of denial-of-service (DoS) attacks. router interface D. loose mode. and broadcast mode C. strict mode. the packet must be received on the interface that the router would use to forward the return packet. including Smurf and Tribal Flood Network (TFN). and the rest of the Internet. default gateway Answer: A Explanation: The Unicast RPF feature helps to mitigate problems that are caused by the introduction of malformed or forged (spoofed) IP source addresses into a network by discarding IP packets that lack a verifiable IP source address. the packet is discarded. Unicast RPF in VRF mode will not be covered in this document.html QUESTION NO: 58 What are the three modes of Unicast Reverse Path Forwarding? A. If the source IP address is not valid. Unicast RPF deflects such attacks by forwarding only packets that have source addresses that are valid and consistent with the IP routing table. loose mode.Cisco 300-101 Exam B. Unicast RPF works in one of three different modes: strict mode. This action protects the network of the ISP. and VRF mode Answer: A Explanation: Network administrators can use Unicast Reverse Path Forwarding (Unicast RPF) to help limit the malicious traffic on an enterprise network. or VRF mode. Any Time. Reference: http://www. This security feature works by enabling a router to verify the reachability of the source address in packets being forwarded.com/en/US/docs/ios/12_2/security/configuration/guide/scfrpf. loose mode.actualtests." . For example. can take advantage of forged or rapidly changing source IP addresses to allow attackers to thwart efforts to locate or filter the attacks. Note that not all network devices support all three modes of operation.cisco. Unicast RPF configured in strict mode may drop legitimate traffic that is received on an interface that was not the router's choice for sending return traffic. destination address C. and VRF mode D.

0. Reference: http://www.0. which allows the use of the default route in the source verification process. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts.html QUESTION NO: 59 What does the following access list.com/web/about/security/intelligence/unicast-rpf.16.255.0.0-10. It prevents private internal addresses to be accessed directly from outside.actualtests.255 and logs any intrusion attempts.15.10.0 . Additionally.31.255 any log router (config)#access-list 101 deny ip 192. 172.www. 192. An access list may also be specified that permits or denies certain source addresses in Unicast RPF loose mode.255. Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10. Any Time.com 100 .255 any log router (config)#access-list 101 permit ip any any router (config)#interface fastEthernet 1/0 router (config-if)#ip access-group 101 in A.255.255 any log router (config)#access-list 101 deny ip 172.0.255.cisco.255.0 0.0-192.0 0.168. Administrators can change this behavior using the allow-default option.168. It prevents incoming traffic from IP address ranges 10.16. accomplish? router(config)#access-list 101 deny ip 10.0. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet. a packet that contains a source address for which the return route points to the Null 0 interface will be dropped.255.0.0. Although asymmetric traffic flows may be of concern when deploying this feature.255. which is applied on the external interface FastEthernet 1/0 of the perimeter router.0 0.0.0." . the source address must appear in the routing table.0. Care must be taken to ensure that the appropriate Unicast RPF mode (loose or strict) is configured during the deployment of this feature because it can drop legitimate traffic.0172. B.0.255. D.255 "Pass Any Exam.0. C.0.Cisco 300-101 Exam When administrators use Unicast RPF in loose mode.255. Unicast RPF loose mode is a scalable option for networks that contain asymmetric routing paths.168.255.

Any Time.255. The router will listen to HTTP and HTTP traffic on port 4433.0 .actualtests. use the ip http secure-port command in global configuration mode. Reference: http://www. QUESTION NO: 60 Refer to the following command: router(config)# ip http secure-port 4433 Which statement is true? A. The router will never accept any HTTP and HTTPS traffic. To return the HTTPS server port number to the default.255 These IP addresses should never be allowed from external networks into a corporate network as they would only be able to reach the network from the outside via routing problems or if the IP addresses were spoofed. The default is 443.31.255. D. C.www.0. This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network. The router will listen on port 4433 for HTTPS traffic.168. The router will listen on port 4433 for HTTP traffic.0 .html#wp3612805529 "Pass Any Exam.com 101 . use the no form of this command.16.168.255 192. ip http secure-port port-number no ip http secure-port Syntax Description port-number Integer in the range of 0 to 65535 is accepted. Answer: A Explanation: To set the secure HTTP (HTTPS) server port number for listening. B.192.0.cisco. The log keyword also enables logging of this intrusion attempt.Cisco 300-101 Exam 172. but the port number must be higher than 1024 unless the default is used." .172.com/en/US/docs/ios-xml/ios/https/command/nm-https-cr-clsh.

20.14.16.201.16.20. router(config)#snmp-server host 172.28 informs version 2c CISCORO C.201.cisco-faq.www.16. Any Time. The problem of course is that the SNMP statistical "Pass Any Exam.port 138• Bootstrap Protocol (BOOTP) .225 B.html Topic 6. Infrastructure Services QUESTION NO: 62 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server. the engineer is not concerned with authentication or encryption. The broadcasts will be forwarded to the unicast address which is specified with the ip helper command. and 49 to 172.225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used.port 137• NetBIOS Datagram Server .225.14.225 D.201.UDP port 69 • Domain Name System (DNS) – UDP port 53• Time service .com/163/forward_udp_broadcas.225 C.201.28 informs version 3 auth CISCORO Answer: A Explanation: Most network admins and engineers are familiar with SNMPv2c which has become the dominant SNMP version of the past decade. router(config-if)#ip helper-address 172. router(config-if)#udp helper-address 172.14.16.14.14.20.20. Which command should be applied to the configuration to allow this? A. router(config)#snmp-server host 172.20. the following broadcast packets will be forwarded by the router by default:• TFTP .actualtests. Which command satisfies the requirements of this scenario? A.port 67• TACACS – UDP port 49 Reference: http://www.ip helper-address {ip address}When configuring the ip helper-address command." . router(config)#snmp-server host 172. router(config-if)#ip udp helper-address 172.Cisco 300-101 Exam QUESTION NO: 61 A network engineer is configuring a routed interface to forward broadcasts of UDP 69. router(config)#snmp-server host 172. router(config-if)#ip helper-address 172.port 37• NetBIOS Name Server .28 traps version 3 auth CISCORO D.com 102 . However. 53.28 traps version 2c CISCORO B.

“AuthPriv” (messages are authenticated and encrypted – priv keyword in CLI).ine. password C. Users. senior management asks you to implement better logging functionality on all IOS-based devices. Like IPv4 to IPv6. which determines the access policy for its users. SNMPv3. Which two actions can you take to provide enhanced "Pass Any Exam. each user is added to a group. encryption-key Answer: A Explanation: The following security models exist: SNMPv1. username serves as a replacement for community string). Reference: http://www. which string is matched for authentication? A.Cisco 300-101 Exam payload is not encrypted and authentication is passed in cleartext. SNMP version 3 moves away from the community string approach in favor of user-based authentication and view-based access control. no encryption) to authenticate polling and trap delivery. The users are not actual local user accounts. groups. “AuthNoPriv” (messages are authenticated but not encrypted – auth keyword in CLI). rather they are simply a means to determine who can authenticate to the device. Reference: http://blog. views.com 103 .www. The following security levels exits: “noAuthNoPriv” (no authentiation and no encryption – noauth keyword in CLI). SNMPv1 and SNMPv2 models only support the “noAuthNoPriv” model since they use plain community string to match the incoming packets. community-string D.com/snmp-version-3/ QUESTION NO: 63 When using SNMPv3 with NoAuthNoPriv. The SNMPv3 implementations could be configured to use either of the models on per-group basis (in case if “noAuthNoPriv” is configured. Most companies have decided that the information being transmitted isn’t valuable enough to be worth the extra effort in upgrading to SNMPv3.ccnpguide. Any Time." . but I would suggest otherwise. SNMPv2. there are some major changes under the hood. The view is used to define what the user account may access on the IOS device.actualtests. SNMP version 2 uses community strings (think cleartext passwords. username B.com/2008/07/19/snmpv3-tutorial/ QUESTION NO: 64 After a recent DoS attack on a network. Finally.

This can aid in pinpointing the exact time of events. In this situation. QUESTION NO: 65 A network engineer finds that a core router has crashed without warning. To limit syslog messages sent to the router's history table and to an SNMP network management station based on severity. B. Disable event logging on all noncritical items. Answer: A. NetFlow Answer: B Explanation: When a router crashes. Set the logging severity level to 1. "saving level warnings or higher." .B Explanation: The optional msec keyword specifies the date/time format should include milliseconds. it is sometimes useful to obtain a full copy of the memory image (called a core dump) to identify the cause of the crash.actualtests. Cisco devices Log error messages of severity levels 0 through 4 (emergency. D. C. Use the msec option to enable service time stamps. Core dumps are generally very useful to your technical support representative. Increase the logging history . E. in other words. By default." By increasing the severity level.Cisco 300-101 Exam logging results? (Choose two.com • 104 . warm reloads D. use the logging history command in global configuration mode. and SNMP messages will be sent by the less sever (5-7) messages. alert. Four basic ways exist for setting up the router to generate a core dump: • Using Trivial File Transfer Protocol (TFTP) • Using File Transfer Protocol "Pass(FTP) Any Exam. error. critical. secure copy protocol B. Specify a logging rate limit. SNMP E. which feature can the engineer use to create a crash collection? A. or to correlate the order that the events happened.www. core dumps C. Any Time. and warning levels).) A. more granular monitoring can occur.

It enables a device to be an NTP peer to another device. Assuming that an NTP server is already set up. It enables a device to receive NTP broadcast and unicast packets. Command Description ntp broadcast client Allows the system to receive NTP broadcast packets on an interface.cisco.html QUESTION NO: 66 A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. B. It is checksum-neutral.com/en/US/docs/internetworking/troubleshooting/guide/tr19aa. D.html QUESTION NO: 67 What is a function of NPTv6? A. what is the result of the command? A. It maintains a per-node state. B. Any Time. C.com 105 . It interferes with encryption of the full IP payload. Answer: A Explanation: The NTP service can be activated by entering any ntp command.cisco. It enables receiving NTP broadcasts on all interfaces globally. Reference: http://www. the NTP service is activated (if it has not already been activated) and the device is configured to receive NTP broadcast packets on a specified interface simultaneously. Answer: C "Pass Any Exam. It enables receiving NTP broadcasts on the interface where the command was executed. It rewrites transport layer headers. C.Cisco 300-101 Exam Using remote copy protocol (rcp) • Using a Flash disk Reference: http://www.actualtests. When you use the ntp broadcast client command.www.com/c/en/us/td/docs/ios-xml/ios/bsm/command/bsm-xe-3se-3850-crbook/bsm-xe-3se-3850-cr-book_chapter_00. D." .

org/html/rfc6296 QUESTION NO: 68 IPv6 has just been deployed to all of the hosts within a network." . and sends its packets to the resulting address. NPTv6 is defined to include a two-way. and to transports that use the TCP/UDP/DCCP (Datagram Congestion Control Protocol) pseudo-header and checksum NPTv6 provides a simple and compelling solution to meet the address-independence requirement in IPv6. Which feature allows IPv6 devices to communicate with IPv4 servers? A.ietf. Reference: http://en. Any Time. To avoid as many of the issues associated with NAPT44 as possible. The IPv6 client embeds the IPv4 address it wishes to communicate with using these bits.Cisco 300-101 Exam Explanation: RFC 6296 describes a stateless IPv6-to-IPv6 Network Prefix Translation (NPTv6) function. such as SCTP.www. RFC 6146). designed to provide address independence to the edge network. allowing them to communicate. see RFC 6052. NATng C. DNS64 Answer: C Explanation: NAT64 is a mechanism to allow IPv6 hosts to communicate with IPv4 servers.com 106 .wikipedia.org/wiki/NAT64 QUESTION NO: 69 A network engineer initiates the ip sla responder tcp-connect command in order to gather statistics for performance gauging. Which type of statistics does the engineer see? "Pass Any Exam. but not to the servers. and nothing else. The address-independence benefit stems directly from the translation function of the network prefix translator. dual-stack NAT E. It is transport-agnostic with respect to transports that do not checksum the IP header. checksum-neutral.actualtests. Reference: http://tools. NAT64 D. The NAT64 server is the endpoint for at least one IPv4 address and an IPv6 network segment of 32-bits (for instance 64:ff9b::/96. algorithmic translation function. The NAT64 server then creates a NAT-mapping between the IPv6 and the IPv4 address. NAT B.

application-oriented Answer: C Explanation: Configuration Examples for IP SLAs TCP Connect Operations The following example shows how to configure a TCP Connection-oriented operation from Device B to the Telnet port (TCP port 23) of IP Host 1 (IP address 10. IPv6 flow control is enabled on the router.com 107 .1)." .0.actualtests.0.www.cisco. In this example. Flow-set marking in 1280-byte or larger packets is enabled. Answer: A Explanation: Enabling Flow-Label Marking in Packets that Originate from the Device This feature allows the device to track destinations to which the device has sent packets that are 1280 bytes or larger. the control protocol is disabled on the source (Device B). configure terminal 3. B. The operation is scheduled to start immediately. there is no need to send the control message. ipv6 flowset "Pass Any Exam.Cisco 300-101 Exam A.com/c/en/us/td/docs/ios-xml/ios/ipsla/configuration/15-mt/sla-15-mtbook/sla_tcp_conn. Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10. IPv6 PMTU is enabled on the router. SUMMARY STEPS 1.0. connection-oriented D.1 port 23 Reference: http://www. Any Time. as shown in the "TCP Connect Operation" figure in the "Information About the IP SLAs TCP Connect Operation" section. because the target is not a Cisco device and a well-known TCP port is used. enable 2. IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. service-oriented C. This action allows the responder to reply to the TCP Connect operation. What is the result? A.0. D. Flow-label marking in 1280-byte or larger packets is enabled. In this example. C. connectionless-oriented B.html QUESTION NO: 70 A network engineer executes the “ipv6 flowset” command.

www.com/c/en/us/td/docs/ios-xml/ios/ipv6_basic/configuration/15-mt/ip6b15-mt-book/ip6-mtu-path-disc. fragmentation failures D. Step 2 configure terminal Example: Device# configure terminal Enters global configuration mode. Any Time. exit 5. adjacency issues Answer: A "Pass Any Exam. enqueuing for the RP C." . Which line in the output indicates that the send queue is full and export packets are not being sent? A.Cisco 300-101 Exam 4.html QUESTION NO: 71 A network engineer executes the show ip flow export command. Step 3 ipv6 flowset Example: Device(config)# ipv6 flowset Configures flow-label marking in 1280-byte or larger packets sent by the device. clear ipv6 mtu DETAILED STEPS Command or Action Purpose Step 1 enable Example: Device> enable Enables privileged EXEC mode.actualtests. Reference: http://www.cisco.com 108 . output drops B.

Exporting using source IP address 10.cisco. Reference: http://www.com/c/en/us/td/docs/ios/12_0s/feature/guide/oaggnf. Any Time.3.1 (1000) and 10.www. 11 flows exported in 8 udp datagrams The total number of export packets sent. 0 export packets were sent up to process level The packet could not be processed by CEF or by fast switching.1. 0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being transmitted. Version 5 flow records Specifies the version of the flow.actualtests.com 109 .1.html QUESTION NO: 72 A network engineer is asked to configure a "site-to-site" IPsec VPN tunnel. Which functions do the two commands serve in this scenario? "Pass Any Exam.1 Specifies the export destinations and ports.Cisco 300-101 Exam Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10. and the total number of flows contained within them.1. possibly because another feature requires running on the packet.1. 0 export packets were dropped due to no fib 0 export packets were dropped due to adjacency issues Indicates that CEF was unable to switch the packet or forward it up to the process level." . 0 flows failed due to lack of export packet No memory was available to create an export packet.1 Specifies the source address or interface. One of the last things that the engineer does is to configure an access list (access-list 1 permit any) along with the command ip nat inside source list 1 int s0/0 overload. 0 export packets were dropped due to fragmentation failures 0 export packets were dropped due to encapsulation fixup failures Indicates that the packet was dropped because of problems constructing the IP packet. The ports are in parentheses. 0 export packets were dropped enqueuing for the RP 0 export packets were dropped due to IPC rate limiting Indicates that there was a problem transferring the export packet between the RP and the line card.2.

1 255. 172.10.1 255. interface ethernet 1 ip address 10.10. interface serial 0 ip address 172." .1 prefix 24 ! !--.255.10.10.Defines Ethernet 1 with an IP address and as a NAT inside interface. Any Time. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface ethernet 0 ip address 10.Cisco 300-101 Exam A. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.0 ip nat inside !--.address. D.1 172.16.255. The command ip nat inside source list 1 int s0/0 overload provides "many-to-one" access for all devices on a defined segment to share a single IP address upon exiting the external interface.1.Defines serial 0 with an IP address and as a NAT outside interface.64 255.255.255.20. The command ip nat inside source list 1 int s0/0 overload disables "many-to-one" access for all devices on a defined segment to share a single IP address upon exiting the external interface.10.255.Defines Ethernet 0 with an IP address and as a NAT inside interface. C. The command access-list 1 defines interesting traffic that is allowed through the tunnel.16.0 ip nat outside !--.0 ip nat inside !--.10.actualtests.www.255. ip nat inside source list 7 pool ovrld overload ! "Pass Any Exam.16. ip nat pool ovrld 172.16.Defines a NAT pool named ovrld with a range of a single IP !--. B.10.com 110 .

0 through 10.com/en/US/tech/tk648/tk361/technologies_tech_note09186a0080094e77. This means that another HSRP "Pass Any Exam.10.31 and 10.10.20.Indicates that any packets received on the inside interface that !--.Cisco 300-101 Exam ! ! ! !--. The keyword overload used in the ip nat inside source list 7 pool ovrld overload command allows NAT to translate multiple inside devices to the single address in the pool.com 111 . D.0 0.actualtests. Track the up/down state of a loopback interface and shut down this interface during maintenance. Reference: http://www.10. Which action will allow for manual switching of HSRP nodes? A. If the line protocol of the specified interface goes down. Answer: A Explanation: The standby track command allows you to specify another interface on the router for the HSRP process to monitor in order to alter the HSRP priority for a given group.10. Note in the previous second configuration. the NAT pool "ovrld"only has a range of one address." .Access-list 7 permits packets with source addresses ranging from !--. Disable and enable all active interfaces on the active HSRP node. C. Enable HSRPv2 under global configuration.0.10.10.0 0.Translations are overloaded.10. which allows for maintenance mode. access-list 7 permit 10.www.10. !--.31 access-list 7 permit 10.20. which allows multiple inside !--. the HSRP priority is reduced.10.0.are permitted by access-list 7 has the source address !--.20.31 !--.cisco.0.10.0. as an alternative to powering down the active router and letting the network respond accordingly.0 through 10. B. Any Time.translated to an address out of the NAT pool named ovrld.devices to be translated to the same valid IP address.31.shtml QUESTION NO: 73 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows. Adjust the HSRP priority without the use of preemption.

html QUESTION NO: 75 An organization decides to implement NetFlow on its network to monitor the fluctuation of traffic that is disrupting core services. SNMP B. Syslog E.com/en/US/docs/ios-xml/ios/netflow/configuration/12-4t/cfg-nflowdata-expt. What can you determine based on this information? A.com/c/en/us/support/docs/ip/hot-standby-router-protocol-hsrp/137806. NetFlow output has been filtered by default. a flow is identified as the combination of the following key fields: Reference: http://www. Any Time. Cisco Express Forwarding has not been configured globally." . and bandwidth-intensive applications are identified as the root cause.actualtests. information such as the source/destination IP and Layer 4 port numbers is required. NetFlow D. the network engineer is unable to see OUT traffic on the interfaces.html QUESTION NO: 74 A network engineer is notified that several employees are experiencing network performance related issues.Cisco 300-101 Exam router with higher priority can become the active router if that router has standby preempt enabled. Cisco IOS EEM C. "Pass Any Exam.cisco. B.com 112 .cisco.www. Which feature should the engineer use to gather the required information? A. After reviewing the output of NetFlow. Specifically. Reference: http://www. so when this interface is shut down the HSRP priority for that router will be lowered and the other HSRP router will then become the active one. Loopback interfaces can be tracked. In order to identify which specific type of traffic is causing this slowness. WCCP Answer: C Explanation: NetFlow Flows Key Fields A network flow is identified as a unidirectional stream of packets between a given source and destination--both are defined by a network-layer IP address and transport-layer source and destination port numbers.

CEF creates its own table. the NetFlow packets did not mark the "Pass Any Exam. Every NetFlow configuration aspect was checked and nothing incorrect was found. NetFlow Analyzer started showing OUT traffic for the interfaces. This decisionmaking process is called “switching”. To enable CEF. Based on the routing table. This is why this topic is about Cisco Express Forwarding." . That is when we noticed the ‘no ip cef’ command on the router.www. The FIB is organized differently than the routing table and CEF uses the FIB to decide which interface to send traffic from. D. CEF can switch traffic faster than route-caching using fast-switching How to enable CEF? CEF is disabled by default on all routers except the 7xxx series routers. Better performance than fast-switching (the default) and takes less CPU to perform the same task. ie. Router# config t Router(config)# ip cef Router(config)# To disable CEF. 2. ‘no ip cef‘.com 113 . go into global configuration mode and enter the CEF command. Any Time. CEF offers the following benefits: 1. If the CEF is disabled on the router. Answer: A Explanation: We came across a recent issue where a user setup a router for NetFlow export but was unable to see the OUT traffic for the interfaces in NetFlow Analyzer. Why CEF Needed when enabling NetFlow ? CEF is a prerequisite to enable NetFlow on the router interfaces. CEF was enabled at the global level and within seconds. CEF decides through which interface traffic is exiting the router. The command ip flow-capture fragment-offset has been enabled. allows for advanced features like NBAR 3. Whether to forward or not forward the packets after checking that the destination for the packet is reachable. called the Forwarding Information Base (FIB). What is switching? A Router must make decisions about where to forward the packets passing through. Flow Export version 9 is in use. simply use the ‘no’ form of the command. the NetFlow packets exported from the router will have “Destination interface” as “null” and this leads NetFlow Analyzer to show no OUT traffic for the interfaces. 2. Switching is what a router does when it makes the following decisions: 1. What is CEF? CEF is one of the available switching options for Cisco routers. what is the next hop of the router and which interface will the router use to get to that destination. If the destination is reachable.actualtests. Any NetFlow analyzer product will calculate the OUT traffic for an interface based on the Destination Interface value present in the NetFlow packets exported from the router.Cisco 300-101 Exam C. Overall. Without enabling the CEF on the router. Enabling and Disabling CEF is easy. When enabled.

manageengine.www. Reference: http://www. Reference: https://blogs. current status of the specified flow exporter C. Any Time.actualtests.html QUESTION NO: 77 A company's corporate policy has been updated to require that stateless.html QUESTION NO: 76 A network engineer has left a NetFlow capture enabled over the weekend to gather information regarding excessive bandwidth utilization.Cisco 300-101 Exam destination interfaces and so NetFlow Analyzer was not able to show the OUT traffic for the interfaces. The following command is entered: switch#show flow exporter Flow_Exporter-1 What is the expected output? A. What is the best solution to ensure compliance with this new policy? "Pass Any Exam. 1-to-1.com/en/US/docs/ios-xml/ios/fnetflow/configuration/15-mt/cfg-defnflow-exprts.com 114 . configuration of the specified flow monitor Answer: B Explanation: show flow exporter exporter-name Example: Device# show flow exporter FLOW_EXPORTER-1 (Optional) Displays the current status of the specified flow exporter. and IPv6 to IPv6 translations at the Internet edge are performed.cisco. status and statistics of the specified flow monitor D.com/network-2/netflowanalyzer/2010/05/19/need-for-cefin-netflow-data-export." . configuration of the specified flow exporter B.

an access.Cisco 300-101 Exam A. NAT44 C. DNS B. stateless translation E.actualtests. NPTv4 E. NATv6 D. and redundancy and load sharing. The DNS64 and NAT64 functions are completely separated.com/c/dam/en/us/td/docs/solutions/SBA/August2012/Cisco_SBA_BN_IPv6Addre ssingGuide-Aug2012. multi homing.pdf QUESTION NO: 78 Which two functions are completely independent when implementing NAT64 over NAT-PT? (Choose two. Any Time. Reference: http://www. This solution allows both enterprises and ISPs to accelerate IPv6 adoption while simultaneously handling IPv4 address depletion. NAT C. The translation mechanism is stateless and provides a 1:1 relationship between the internal addresses and external addresses.com 115 .com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6solution/white_paper_c11-676278.cisco. session handling Answer: A.) A. or an edge network). The use cases for NPTv6 outlined in the RFC include peering with partner networks. or NAT64. which is essential to the superiority of NAT64 over NAT-PT. NAT64 B.B Explanation: Network Address Translation IPv6 to IPv4. Reference: http://www.html "Pass Any Exam." . port redirection D. technology facilitates communication between IPv6-only and IPv4-only hosts and networks (whether in a transit.www.cisco. NPTv6 Answer: E Explanation: NPTv6 provides a mechanism to translate the private internal organization prefixes to public globally reachable addresses.

there are important differences.B Explanation: While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice versa. stateless B. dynamic Answer: A.) A. DHCPv6. Any Time. Manual. flow monitor "Pass Any Exam. automatic E.Cisco 300-101 Exam QUESTION NO: 79 Which two methods of deployment can you use when implementing NAT64? (Choose two.html QUESTION NO: 80 Which NetFlow component is applied to an interface and collects information about flows? A." . hence lacks in end-to-end address transparency No state or bindings created on the translation State or bindings are created on every unique translation Requires IPv4-translatable IPv6 addresses assignment (mandatory requirement) No requirement on the nature of IPv6 address assignment Requires either manual or DHCPv6 based address assignment for IPv6 hosts Free to choose any mode of IPv6 address assignment viz.actualtests.com/c/en/us/products/collateral/ios-nx-os-software/enterprise-ipv6solution/white_paper_c11-676277. functional G.com 116 . Table 2. SLAAC Reference: http://www.cisco. stateful C. Differences Between Stateless NAT64 and Stateful NAT64 Stateless NAT64 Stateful NAT64 1:1 translation 1:N translation No conservation of IPv4 address Conserves IPv4 address Assures end-to-end address transparency and scalability Uses address overloading.www. static F. manual D. The following table provides a high-level overview of the most relevant differences.

Reference: http://www.www. The sampler matched 10 packets.com 117 . Any Time. Answer: A Explanation: The sampling mode determines the algorithm that selects a subset of traffic for NetFlow processing. incoming packets are randomly selected so that one out of each n sequential packets is selected on average for NetFlow processing. Which statement about the output of the show flow-sampler command is true? A." . one packet every 100 packets. The flow monitor cache is automatically created at the time the flow monitor is applied to the first interface. B. This sample configuration "Pass Any Exam. which is configured for the flow monitor and stored in the flow monitor cache.actualtests.cisco. if you set the sampling rate to 1 out of 100 packets. C. Flow monitors consist of a record and a cache. 199th. flow exporter C. each packet randomly chosen from every group of 100 packets. You add the record to the flow monitor after you create the flow monitor. Flow data is collected from the network traffic during the monitoring process based on the key and nonkey fields in the record. 302nd. and so on packets. The sampler matched 10 packets.com/c/en/us/td/docs/ios/fnetflow/command/reference/fnf_book/fnf_01. D. each one randomly chosen from every 100-second interval.Cisco 300-101 Exam B. 120th. In the random sampling mode that Random Sampled NetFlow uses. For example.html#wp13 14030 QUESTION NO: 81 Refer to the exhibit. The sampler matched 10 packets. The sampler matched 10 packets. flow collector Answer: A Explanation: Flow monitors are the NetFlow component that is applied to interfaces to perform network traffic monitoring. flow sampler D. then NetFlow might sample the 5th. one packet every 100 seconds.

It configures the router to receive cache flow information about flows with destination IP 10. Syntax Description ip-address IP address of the workstation to which you want to send the NetFlow information.1 5858? A. It configures the router to receive cache flow information from IP 10. B.1 on port UDP/5858.10.10. D.Cisco 300-101 Exam provides NetFlow data on 1 percent of total traffic.1 on port UDP/5858.com 118 .10.10.10. C. It configures the router to export cache flow information to IP 10.10. It configures the router to export cache flow information about flows with destination IP 10.com/c/en/us/td/docs/ios/12_0s/feature/guide/nfstatsa. Table 2 show flow-sampler Field Descriptions Field Description Sampler Name of the flow sampler id Unique ID of the flow sampler packets matched Number of packets matched for the flow sampler mode Flow sampling mode sampling interval is Flow sampling interval (in packets) Reference: http://www.10.html#wp1084291 QUESTION NO: 82 What is the result of the command ip flow-export destination 10.10. Answer: A Explanation: To enable the exporting of information in NetFlow cache entries. udp-port UDP protocol-specific port number. use the ip flow-export destination command in global configuration mode.1 and port UDP/5858.www.10. Any Time.1 and port UDP/5858." . Reference: "Pass Any Exam.cisco. The n value is a parameter from 1 to 65535 packets that you can configure.actualtests.10.

Any Time.actualtests.com 119 .www.Cisco 300-101 Exam http://www." .cisco.html#wp1023091 "Pass Any Exam.com/c/en/us/td/docs/ios/12_0s/feature/guide/12s_mdnf.

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