Cisco 300-101

Implementing Cisco IP Routing
Version: 6.1

Cisco 300-101 Exam
Topic 1, Network Principles

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
C. The gateway of last resort is
D. The router will listen for all multicast traffic.
Answer: C
The route is the default route and is listed as the first CEF entry. Here we see the next
hop for this default route lists as the default router (gateway of last resort).


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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
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.

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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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." . and then any new packets are simply discarded. lower throughput Answer: A. and retransmission capabilities. Specifically. the queue is constantly full. 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. flow control. Although some UDP applications have application-level windowing. Any Time.actualtests.www. the introduction of a sudden burst of traffic may cause large numbers of established. However. rather than discarding them.) A. the size of these queues is also limited. most UDP transmitters are completely oblivious to drops and thus never lower transmission rates due to dropping. When TCP flows are combined with "Pass Any Exam. The simplest technique to limit queue size is known as tail drop. Because routers have limited resources. TCP transmitters will throttle-back flows when drops have been detected. This causes problems when used on TCP/IP routers handling multiple TCP streams.Cisco 300-101 Exam B. Reference: http://en.wikipedia. windowing QUESTION NO: 4 Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three. and there are no problems except that the full queue results in high latency.C. random early detection D. latency D. Routers on the Internet normally have packet queues. While the network is stable. starvation B. to allow them to hold packets when the network is busy. jitter 4 . The queue is allowed to fill to its maximum size. until there is space in the queue again. steady streams to lose packets simultaneously. tail drop C. especially when bursty traffic is present.

" .pdf QUESTION NO: 6 Which statement about the use of tunneling to migrate to IPv6 is true? "Pass Any Exam. Any Time. then TCP flows will continually lower their rates.Cisco 300-101 Exam UDP flows in a single service provider class and the class experiences congestion. 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.www.actualtests. it is not always possible to separate TCP-based flows from UDP-based flows. but it is beneficial to be aware of this behavior when making such application-mixing decisions. GRE tunneling D. This effect is called TCP-starvation/UDP-dominance.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. 6to4 tunneling C. as WRED (for the most part) only affects TCP-based Reference: http://www. Reference: http://www. Even if WRED is enabled on the service provider class. and applications. This can increase latency and lower the overall throughput. For sessions that support IPv6 is used on a dual stack networks. dual-stack method B. It allows hosts to simultaneously reach IPv4 and IPv6 content. NAT-PT Answer: A Explanation: Dual stack means that devices are able to run IPv4 and IPv6 in 5 . the same behavior would be observed. If both endpoints support IPv4 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. Granted. potentially giving up their bandwidth to drop-oblivious UDP flows. then IPv4 is used. so it offers a very flexible coexistence strategy.

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

Any co_n5k_layer3_ucast_cfg_rel_503_N1_1/l3_manage-routes.actualtests.www. • route—An individual IP route. Reference: http://www. Cisco Express Forwarding switching D. • prefix/length—Any IP prefix. The route options are as follows: • *—All routes.2. process switching C.Cisco 300-101 Exam switch(config)# clear ip route 10. Reference: . 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 fast switching B. • 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.html QUESTION NO: 8 Which switching method is used when entries are present in the output of the command show ip cache? A.2. alphanumeric string up to 32 characters. To display the routing table cache used to fast switch IP 7 command. Routers offer better packet-transfer performance when fast switching is enabled. Destination addresses are stored in the high-speed cache to expedite forwarding." . The vrf-name can be any case-sensitive.2 Clears one or more routes from both the unicast RIB and all the module FIBs. use the “show ip cache” EXEC "Pass Any Exam.

Set window scaling to be used on the remote host. The TCP Window Scaling feature complies with RFC 1323. keepalive D. explicit congestion notification C. C. B. Answer: A.) A. Use the ip tcp window-size command in global configuration mode to configure the TCP window size. MTU window "Pass Any Exam." .com 8 . Set TCP options to "enabled" on the remote host.) A. Execute the command ip tcp adjust-mss. Execute the command ip tcp queuemax. TCP Extensions for High Performance . The TCP Window Scaling enhancement provides that header compression B. 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). time stamps E. Execute the command ip tcp window-size 65536.html#GUID-BD998AC6-F128-47DD-B5F7-B226546D4B08 QUESTION NO: 10 Which three TCP enhancements can be used with TCP selective acknowledgments? (Choose three. the remote host must also support this feature and its window size must be increased. Reference: http://www.actualtests.B Explanation: The TCP Window Scaling feature adds support for the Window Scaling option in RFC 1323. 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. E.www. TCP path discovery F.Cisco 300-101 Exam QUESTION NO: 9 Which two actions must you perform to enable and use window scaling on a router? (Choose The larger scalable window size will allow TCP to perform better over LFNs. D. In order for this to work. Typical applications use a scale factor of 3 when deployed in LFNs. The window size can increase to a scale factor of 14. Any Time.

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

nonsequencing unordered packets E." .com 10 . Any Time. Each measurement operation can monitor against a pre-set performance threshold.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.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.Cisco 300-101 Exam TCP Reference: http://www. jitter.www. starvation C. Cisco IOS IP SLAs generates an SNMP trap to alert management applications if this threshold is crossed. Which UDP characteristic does this scenario describe? A. packet loss. one-way latency. average jitter. Several SNMP traps are available: round trip time. jitter Answer: A Explanation: Cisco IOS IP SLAs provides a proactive notification feature with an SNMP trap. and connectivity tests. connectionless communication 02d5efe. 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.html "Pass Any Exam. latency B.actualtests.

Even if WRED is enabled on the service-provider class. which task must be completed? "Pass Any Exam. Layer 2 Technologies QUESTION NO: 13 Prior to enabling PPPoE in a virtual private dialup network 300-101 Exam QUESTION NO: 12 Under which condition does UDP dominance occur? A.html Topic 2. the same behavior would be observed because WRED (for the most part) manages congestion only on TCP-based flows. When TCP flows are combined with UDP flows within a single service-provider class and the class experiences congestion. Specifically.actualtests. Reference: http://www. potentially giving up their bandwidth to UDP flows that are oblivious to drops. when UDP flows are assigned a lower priority queue C. thus. when WRED is enabled D. 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 11 . 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. Although some UDP applications have application-level" . Any Time. This effect is called TCP starvation/UDP dominance. TCP flows continually lower their transmission rates. most UDP transmitters are completely oblivious to drops and. never lower transmission rates because of dropping. TCP transmitters throttle back flows when drops are detected. and retransmission capabilities. flow control.

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

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

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

com 15 . even in the absence of interesting traffic. 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. 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. Reference: http://www." .html QUESTION NO: 16 Which PPP authentication method sends authentication information in cleartext? "Pass Any Exam. Step 9 Router(config-if)# dialer persistent [delay [initial] seconds | max-attempts number] Forces a dialer interface to be connected at all _persist.actualtests. Step 5 Router(config-if)# dialer pool number Specifies the dialing pool to use for calls to this destination.www.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 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. Any Step 6 Router(config-if)# dialer-group group-number Assigns the dialer interface to a dialer group. Step 3 Router(config-if)# encapsulation type Specifies the encapsulation type.

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

40 Answer: A Explanation: Before you troubleshoot any OSPF neighbor-related issues on an NBMA 20 C. 30 D. Passive Discovery Phase and PPP Session Phase "Pass Any Exam.html QUESTION NO: 19 PPPoE is composed of which two phases? A." .Cisco 300-101 Exam QUESTION NO: 18 What is the default OSPF hello interval on a Frame Relay point-to-point network? A.actualtests. Active Authentication Phase and PPP Session Phase 17 . Any 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.www. 10 B.

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

" .0/16 route and therefore won't send it to anyone else downstream. network because it is blocked by the ACL.0. If you filter outbound.Cisco 300-101 Exam Which one statement is true? A.0.0/8 network can successfully ping users on the 192.0/24 cannot successfully ping users on the 10. Users on the 10.0/8 network.168.0.5. D. Which message is required to obtain a global unicast address when a router is present? 19 .0.www.0. Answer: E Explanation: You can filter what individual routes are sent (out) or received (in) to any interface within your EIGRP configuration.0. QUESTION NO: 22 A router with an interface that is configured with ipv6 address autoconfig also has a link-local address assigned.16.0. but users on the 192. Router B will not advertise the 10.0. The 10.168. If you filter inbound. Traffic from the 172.0.actualtests. Any Time. E. B. DHCPv6 request "Pass Any Exam. C.0.0/8 network will not be advertised by Router B because the network statement for the 10.0/8 network will not be in the routing table on Router B.0/16 network will be blocked by the ACL.0. One example is noted above. YOU won't know about the route and therefore won't send it to anyone else downstream.0/8 network is missing from Router B. the next neighbor(s) will not know about anything except the 172. The 10.0.0/24 network.

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

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

Answer: C Explanation: OSPFv3 uses link-local IPv6 addresses for neighbor discovery and other features. IPv6 traffic filtering can be implemented only on SVIs. autonomous-system autonomous-system-number no autonomous-system autonomous-system-number Reference: http://www. It sets the BGP autonomous system number in a VRF. Any Time. It sets the global EIGRP autonomous system number. D. The link-local addresses that were used by OSPFv3 were explicitly denied. What caused this issue? A. an IPv6 traffic filter was configured under various interfaces on the local router.www. The global anycast address must be added to the traffic filter to allow OSPFv3 to work properly. 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. The traffic filter is blocking all ICMPv6 traffic. which caused the neighbor relationships to fail.Cisco 300-101 Exam For security purposes.html QUESTION NO: 25 What is the purpose of the autonomous-system {autonomous-system-number} command? wp1062796 "Pass Any Exam. C." . 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. To remove the autonomous-system for an EIGRP routing process from within a VPN VRF shortly after implementing the traffic filter. It sets the global BGP autonomous system 22 . B. However. C. OSPFv3 neighbor adjacencies were lost. use the no form of this command. It sets the EIGRP autonomous system number in a VRF. Reference: http://www. use the autonomous-system command in address-family configuration mode. D.

which enables untrusted aggregationswitch ports to accept DHCP packets that include option-82 information. • The switch receives a DHCP packet that includes a relay agent IP address that is not 0. • The switch receives a packet on an untrusted interface.Cisco 300-101 Exam QUESTION NO: 26 Which type of traffic does DHCP snooping drop? A.html QUESTION NO: 27 Refer to the exhibit. DHCPNAK." . This check is performed only if the DHCP snooping MAC address verification option is turned on. 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. Reference: http://www. • The switch receives a DHCPRELEASE or DHCPDECLINE message from an untrusted host with an entry in the DHCP snooping binding table. you can enable the DHCP option-82 on untrusted port feature. "Pass Any Exam. Any Time.0. traffic from a trusted DHCP server to client 23 . discover messages and the source MAC address and the DHCP client hardware address do not match. or DHCPLEASEQUERY packet) from a DHCP server outside the network or firewall.actualtests. Configure the port on the edge switch that connects to the aggregation switch as a trusted port. 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. and the interface information in the binding table does not match the interface on which the message was received.0. DHCPACK. To support trusted edge switches that are connected to untrusted aggregation-switch ports. DHCP messages where the source MAC and client MAC do not match C.

"Pass Any Exam.8. so the correct command is “distribute list 2 out FastEthernet0/0.0.0/23 Answer: B Explanation: With prefix lists. allowing only 1.” QUESTION NO: 28 Which prefix is matched by the command ip prefix-list name permit 10. Only the choice of 10.0.www.3. distribute list 1 out FastEthernet0/0 C. This translate to any prefix in the 10. Any Time." .0.3. distribute list 2 out D.0. whereas access list 1 permits all 1.0/24 B. where X is any value in the 0-255 range.2.0/24.x.8. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24.0.0/16 D.8.0/24 network out of FastEthernet 0/0? A.24 matches this. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface.0/24 network.0/16 ge 24 le 24? A. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more 24 .8.9.Cisco 300-101 Exam Which command only announces the 1.2. distribute list 1 out B.actualtests. 10.0/24 C.0. 10.0. 10. so only a /24 is both greater than or equal to 24 and less than or equal to 24. networks.1.

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

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

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

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

6/30 .www.16.Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192. Any Time.Cisco 300-101 Exam Network Information Seattle S0/0 29 .16.189 Secret Password: cisco "Pass Any Exam.5/30 .54.168.Link between Chicago and NewYork S0/1 192.10/30 .16.189.168." .actualtests.54.Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 192.168.9/30 .Link between Chicago and NewYork Loopback0 172.

Any 30 .actualtests.Cisco 300-101 Exam "Pass Any Exam." .

5/30 in order to configure the OSPF.5/30.actualtests.16.Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam. but the overall solution is the same. IP Address: 192. the IP addressing.5 /30 Subnet Mask: 255.168. hence the subnets will increment by 4. Any Time. First." .252 Here subtract 252 from 2565. find the 4th octet of the Network Address: "Pass Any Exam. we need to find the network address and wildcard mask of 192.16. and router hostnames may change.168. Seattle’s S0/0 IP Address is 192.www. OSPF areas and process ID.255. So.255. 256-252 = 31 .168.

com 32 .actualtests. Now we configure OSPF using process ID 10 (note the process ID may change to something else in real exam).www.168.168.168. Seattle(config-router)#area 21 stub Seattle(config-router)#end "Pass Any Exam. Subnet Mask: (Network Bits – 1’s. Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192.Cisco 300-101 Exam The 4th octet of IP address ( area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route).4 0.4 Broadcast Address: 192.16. Any Time.168. Host Bits – 0’s) Lets find the wildcard mask of /30.16.7 Lets find the wildcard mask of /30. Network Address: 192.0.16." .5) belongs to subnet 1 (4 to 7).

The remote office router (R3) was previously configured and all corporate subnets were reachable from R3. However. Your task is to identify and resolve the cause of connectivity failure with the remote office router R3. we have to stop LSA Type 3 and Type 4.4 0." . Any Time. Currently EIGRP is configured on all routers 33 . and R4 in the network. Therefore we want to configure area 21 as a totally stubby area.3 area 21 Again. Another network professional was tasked with implementing this solution. 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. area 21 should not receive any external or inter-area routes (except the default route). R3.0. 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.www.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 192.16. And if we don’t want to send inter-area routes. "Pass Any Exam. as well as the New York router so there is nothing that needs to be done on that router.actualtests.168. QUESTION NO: 33 CORRECT TEXT JS Industries has expanded their business with the addition of their first remote office. in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been lost.0. we must stop LSA Type 5 if we don’t want to send external routes. 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.

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

www.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." .com 35 . Use the show running-config command on router R3. Any Time.actualtests. "Pass Any Exam.

Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default." .0. Use the show ip route command on R3 to view its routing table: "Pass Any 36 .www.Cisco 300-101 Exam Notice that R3 is configured as a stub receive-only router. Any Time. This keyword will also prevent any type of route from being sent.actualtests. 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.0.0 network. Next we will configure router R3 so that it has only 2 subnets of 10. The receive-only keyword will restrict the router from sharing any of its routes with any other router in that EIGRP autonomous system.

0.0 255.0." .3.0. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 Now we jump back to R3 and use the show ip route command to verify the effect. In conclusion. for example.0/24.0.0 you will leave a /16 network in the output of the show ip route command.0 so that all the ping can work well. notice that if you use another network than 10.0 255.255.2. "Pass Any Exam.0 37 .2.255.0. In the output if we don’t see the summary line (like 10. We can’t get rid of it in the routing table no matter what technique we use to summary the networks. the s0/0 interface of R4.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.actualtests.0 at the interface s0/0 of R4 to summary. if you use the command ip summary-address eigrp 123 10. There is one interesting thing about the output of the show ip route shown above: the 10.0. to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet. which is a directly connected network of R3.0. Just for your information. Any Time.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.255.www. Therefore.0/8 to summary. we will use the ip summary-address eigrp 123 10.0. 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.2.0.

Cisco 300-101 Exam

But in your real exam, if you don’t see the line " is a summary, Null0" then you can
summarize using the network 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
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 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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Cisco 300-101 Exam

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" .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 41 . 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. Any Time.www.actualtests. not R2's router-id 2.3. + Configure virtual link on R2 (from the first output above. If you want to check the routing information. the area 11 will become the transit area. QUESTION NO: 35 CORRECT TEXT You are a network engineer with ROUTE.3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3. The area through which you configure the virtual link is known as a transit 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 Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4. IT policy "Pass Any Exam. Make sure to remove the incorrect configuration statements to get the full points. R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3.www.4.3. not "show ip route". too.actualtests.4.4"): R3>enable R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4. 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. In some cases. In this case. Any Time. where this is not possible. 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. ROUTE.3. one via a frame relay link and one via an EoMPLS link. use the show ipv6 route command. we can use a virtual link to connect to the backbone through a non-backbone area. Therefore." . Note. a small IT company.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they has two connections to the Internet.3.2.4 R3(config-rtr)#area 11 virtual-link + Configure virtual link on R3 (from the second output above.3.3.2. routers R2 and R3 must be configured with the area <area id> virtuallink <neighbor router-id> 42 .

Choose and configure the appropriate path selection feature to accomplish this task. "Pass Any Exam. You may use the Test Workstation to generate HTTP traffic to validate your solution. Any Time. 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 43 ." .Cisco 300-101 Exam requires that all outbound HTTP traffic use the frame relay link when it is available.actualtests.www. No static or default routing is allowed. All other traffic may use either link.

a small IT company. A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing. No static or default routing is allowed in either network.1.1.100. After that configure the route map and then apply it on the interface to the server in EIGRP network. The redundant paths from the OSPF network to the EIGRP network must be available in case of a link failure. You may add new commands or change default values.16. You may not remove or change any of the configuration commands currently on any of the routers.actualtests." . One network is using OSPF as its IGP and the other is using EIGRP as its They have recently merged two organizations and now need to merge their networks as shown in the topology exhibit. R4 has been added to the existing OSPF network to provide the interconnect between the OSPF and EIGRP 44 . 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.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.www. Two links have been added that will provide redundancy. QUESTION NO: 36 CORRECT TEXT You are a network engineer with ROUTE. You have been tasked with completing the implementation and ensuring that the network requirements are met.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. "Pass Any Exam. Any Time. All traffic must use the shortest path that provides the greatest bandwidth.100.

If the delay is 20000us then we need to divide it by 10. we get Bandwidth=1544 Kbit. 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 172.16. "Pass Any Exam. Load=1. Any Time. Reliability=255. Reliability. Delay=20000 us. Reliability=255. Delay." .1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this 45 . 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. Load. 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.100. Delay=1000 us.www. For example. notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. these parameters are just used for reference and we can use other parameters with no problem. 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.actualtests.Cisco 300-101 Exam Answer: First we need to find out 5 parameters (Bandwidth.

Cisco 300-101 Exam Note: If the link between R2 and R3 is FastEthernet link." . which is better than R1 -> R2 -> 46 . 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. 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.actualtests. Any Time. "Pass Any Exam. but the overall solution is the same. Note: The actual OPSF and EIGRP process numbers may change in the actual exam so be sure to use the actual correct values. QUESTION NO: 37 You have been asked to evaluate how EIGRP is functioning in a customer network. we must put the command below under EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4).www.

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

Any 48 .actualtests.Cisco 300-101 Exam "Pass Any Exam." .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.www. 1:1 B. Any Time." . 1:5 C. What is the ratio of traffic over each path? A. 19:80 "Pass Any 49 . 6:8 D.actualtests.

so we issue the “show ip route 50 .Cisco 300-101 Exam Answer: D Explanation: First.1." .6.6” command from R1 and see this: "Pass Any Exam. Any Time. find the IP address of the loopback0 interface on R6: We see that it is 150.

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

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

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

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

"Pass Any Exam." . Any 55 .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.www. QUESTION NO: 39 You have been asked to evaluate how EIGRP is functioning in a customer network.

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

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

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

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

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

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

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

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

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

Any Time.www.168. which is shows as 1810944 for the 192.0 route. QUESTION NO: 41 You have been asked to evaluate how EIGRP is functioning in a customer network.actualtests.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. "Pass Any 65 .46." .

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

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

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

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

Cisco 300-101 Exam

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

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." -


Cisco 300-101 Exam
config command.

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Cisco 300-101 Exam

"Pass Any Exam. Any Time." -


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

1601 C. 1569 Answer: A Explanation: Part of the “show ip ospf topology” command on R5 shows this: The Link ID of R3 ( 74 . 600 D. "Pass Any Exam.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. 1858 B. Any Time.3) shows the age is 1858.actualtests.www.3.3." .

Any Time. The customer has disabled your access to the show runningconfig command.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.actualtests. "Pass Any Exam." .com 75 .www.

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actualtests. "Pass Any Exam. 120.Cisco 300-101 Exam Which of the following statements is true about the serial links that terminate in R3 A.www. Any Time. 120 C. R3 is responsible for flooding LSUs to all the routers on the network. The R1-R3 link needs the neighbor command for the adjacency to stay up B. The R2-R3 link OSPF timer values are 30.40 D. The R1-R3 link OSPF timer values should be 78 .40." . 79 . The customer has disabled your access to the show runningconfig command." .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. "Pass Any Exam. Any Time.actualtests.

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

com 84 . "Pass Any Exam." .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. Any Time.www.actualtests. The customer has disabled your access to the show runningconfig command.

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Any 88 . 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. Only R5's loopback is present in R5's Routing table D. 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.www. R5's Loopback and R6's Loopback are both present in R6's Routing table C. Only R6's loopback is present in R5's Routing table E.actualtests." . inspect their routing tables and determine which statement is true? A.

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

Besides allowing for multiple destinations.230 255.224 tunnel source 209. interface Tunnel0 bandwidth 1536 ip address 209.x. which is not seen in the configuration because it is the default.255.165.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.224 tunnel source Serial0/0 tunnel mode gre multipoint B. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch.www. interface fa 0/0 bandwidth 1536 ip address 209.x found with p2p GRE tunnels. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination.231 255." . Any Time.255.165. interface Tunnel0 bandwidth 1536 ip address 90 .255. interface fa0/0 bandwidth 1536 ip address 209. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A. 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. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 "Pass Any Exam. effectively they have the tunnel mode gre command.255.actualtests. an mGRE tunnel requires NHRP to resolve the tunnel endpoints.161.201.224 tunnel mode gre multipoint C.255. Conversely.x. This command is used instead of the tunnel destination x.255. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint.200.255.1 tunnel-mode dynamic D. Note. a p2p GRE tunnel may connect to an mGRE tunnel.165.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations.168.165.224 tunnel source 192. tunnel interfaces by default are point-topoint (p-p) using GRE encapsulation.2 tunnel destination 209. An mGRE interface does not have a configured destination.165.231 255.165.230 255.

#send errors 1. #pkts encrypt: #pkts decrypt: 7760382. Which three pieces of information are displayed in the output? (Choose three. local addr. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound. invalid identity packets Answer: A.255.1.1. remote crypto endpt.1. 12.1.1.: Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.Cisco 300-101 Exam ip address 10.0/255.255.1. #pkts digest 7767918 #pkts decaps: Phase2. #pkts compr. Authentication Header (AH) is not used since there are no AH SAs.actualtests. inbound crypto map B.2 PERMIT.0/255." .B. failed: 0. interface: FastEthernet0 Crypto map tag: test. #pkts verify 7760382 #pkts compressed: 0. Any Time.www.1.1 and 12.: 12.1.10 255. remaining key lifetime 91 .1.1. flags={origin_is_acl. current_peer: 12. #pkts decompressed: 0 #pkts not compressed: 0. tagged packets E.1.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www.html QUESTION NO: 47 A network engineer executes the show crypto ipsec sa command.} #pkts encaps: 7767918.1. This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question).255.0/0/0) remote ident (addr/mask/prot/port): (10. path MTU D.1.1 local ident (addr/mask/prot/port): (20. #recv errors 0 local crypto endpt. The encrypted tunnel is built between 12.2 "Pass Any Exam.1. #pkts decompress failed: 0.) A.1. untagged packets F.1.255.0 and 10.1.2 for traffic that goes between networks 20.

com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ikeprotocols/5409-ipsec-debug-00.www. Tunnel1 created 00:00:12.1. } slot: 0. 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. conn id: 3442. media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac .1. Flags: authoritative unique nat registered used NBMA address: 10. 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 .cisco." .Cisco 300-101 Exam path mtu 92 . flow_id: 1443.2.2.2 "Pass Any Exam. dynamic. in use settings ={Tunnel.actualtests. expire 01:59:47 TypE. flow_id: 1444.html QUESTION NO: 48 Refer to the following output: Router#show ip nhrp detail 10. in use settings ={Tunnel.1.2/8 via 10.12. } slot: 0. Any Time.1. conn id: 3443.

C. • The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds).255.1111. This value is based on the ip nhrp holdtime command.2 255.www.255 because Cisco does not support aggregation of NBMA information through NHRP.1111.255.1111.255.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache. B." . • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet.1 255.255. The NHRP mapping entry cannot be overwritten.1111.255. Answer: A Explanation: Show NHRP: Examples The following is sample output from the show ip nhrp command: Router# show ip nhrp 10. Tunnel0 created 0:10:03 expire 1:49:56 Type: static Flags: authoritative NBMA address: 10.1111.0.1111.Cisco 300-101 Exam What does the authoritative flag mean in regards to the NHRP information? A.11 10.255. .255. It was obtained directly from the next-hop server.0. E.1. Data packets are process switches for this mapping entry.255. NHRP mapping is for networks that are local to this 93 or router that maintains the NBMA-to-IP address mapping for a particular destination.0. The mapping entry was created in response to an NHRP registration request. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10. • The interface type and number and how long ago it was created (hours:minutes:seconds). • Flags: – authoritative—Indicates thatAny theExam. The mask is always 255.1111. NHRPAny information was obtained from the Next Hop Server "Pass Time.0.1111.1. – static—NBMA address was statically configured. D.

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

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

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

only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D. You can use the KRON scheduler.actualtests. Answer: C Explanation: "Pass Any Exam." . 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. B. QUESTION NO: 55 For troubleshooting purposes. You can disable the IP route cache globally.Cisco 300-101 Exam Topic 5. 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. Any 97 . C. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. IPv6 access list has just one entry. You can use the RITE traffic exporter. You can use an extended access list. E. D. which allows only the single IPv6 IP address of 2001:DB8:0:4::32 to connect using SSH only. You can use an IOS parser. only ssh traffic to vty 0 4 from source all C.www. which method can you use in combination with the “debug ip packet” command to limit the amount of output data? A.

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. Any Time. A packet that matches access-list with the "log" keyword is Cisco Express Forwarding 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.html QUESTION NO: 56 Refer to the following access Unfortunately. What is the reason for this? A. Always use with the access-list command to apply an extended ACL to the debug 98 . A large amount of IP traffic is being permitted on the router. Reference: http://www. the network engineer notices that the router CPU utilization has risen to 99 percent. B. D. C. This command should be used with caution in production networks. Reference: http://www. A packet that matches access-list with the "log" keyword is fast switched.www. ACL logging can be CPU intensive and can negatively affect other functions of the network device. Answer: C Explanation: Logging-enabled access control lists (ACLs) provide insight into traffic as it traverses the network or is dropped by network access-list 100 permit ip any any log After applying the access list on a Cisco router. source address "Pass Any Exam.actualtests. A packet that matches access-list with the "log" keyword is process switched.Cisco 300-101 Exam The debug ip packet command generates a substantial amount of output and uses a substantial amount of system resources." .

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

Additionally. the source address must appear in the routing table. D.255 any log router (config)#access-list 101 deny ip 192.0.168. Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10.0-192. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet. Although asymmetric traffic flows may be of concern when deploying this feature. Any Time.15. Unicast RPF loose mode is a scalable option for networks that contain asymmetric routing paths.255. An access list may also be specified that permits or denies certain source addresses in Unicast RPF loose mode. B.0-10.actualtests.0172.0 It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts. 192. 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.31.0.www.255.255 and logs any intrusion attempts. Reference: which is applied on the external interface FastEthernet 1/0 of the perimeter router. accomplish? router(config)#access-list 101 deny ip 10. Administrators can change this behavior using the allow-default option.255 any log router (config)#access-list 101 deny ip 172. C. 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. 0.0." .Cisco 300-101 Exam When administrators use Unicast RPF in loose mode.0. It prevents private internal addresses to be accessed directly from outside. a packet that contains a source address for which the return route points to the Null 0 interface will be dropped.0 .10.html QUESTION NO: 59 What does the following access list.0. It prevents incoming traffic from IP address ranges 10.0.255 "Pass Any Exam. 100 .0.0. which allows the use of the default route in the source verification process.

This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network.actualtests. B. D. use the ip http secure-port command in global configuration mode. The router will listen on port 4433 for HTTP traffic.www. C. 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 192. The router will listen on port 4433 for HTTPS traffic. The default is 101 Any Time." . 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. QUESTION NO: 60 Refer to the following command: router(config)# ip http secure-port 4433 Which statement is true? A. but the port number must be higher than 1024 unless the default is used.Cisco 300-101 Exam 172.0 .0 .168. use the no form of this command.html#wp3612805529 "Pass Any Exam. To return the HTTPS server port number to the default. The log keyword also enables logging of this intrusion attempt. The router will listen to HTTP and HTTP traffic on port 4433. The router will never accept any HTTP and HTTPS traffic. Reference: http://www.0.

16.16. router(config-if)#ip udp helper-address 172.28 traps version 2c CISCORO B.port 137• NetBIOS Datagram Server . However.201. router(config-if)#ip helper-address 172.225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used. B.14. Any Time. The broadcasts will be forwarded to the unicast address which is specified with the ip helper command. router(config-if)#ip helper-address 172.14. Infrastructure Services QUESTION NO: 62 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications.28 informs version 2c CISCORO C.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.28 traps version 3 auth CISCORO D. Which command should be applied to the configuration to allow this? A.actualtests.Cisco 300-101 Exam QUESTION NO: 61 A network engineer is configuring a routed interface to forward broadcasts of UDP 69. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server.14.20.html Topic C." . the following broadcast packets will be forwarded by the router by default:• TFTP .port 138• Bootstrap Protocol (BOOTP) 37• NetBIOS Name Server .20. 53.port 67• TACACS – UDP port 49 Reference: http://www. router(config)#snmp-server host 172.20.ip helper-address {ip address}When configuring the ip helper-address command. router(config)#snmp-server host 172. and 49 to 172.www. Which command satisfies the requirements of this scenario? 102 . router(config)#snmp-server host the engineer is not concerned with authentication or encryption. router(config)#snmp-server host 172.14. The problem of course is that the SNMP statistical "Pass Any Exam.UDP port 69 • Domain Name System (DNS) – UDP port 53• Time service .20.225 D. router(config-if)#udp helper-address 172.201.

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

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

When you use the ntp broadcast client command. 300-101 Exam Using remote copy protocol (rcp) • Using a Flash disk Reference: http://www.actualtests. Answer: A Explanation: The NTP service can be activated by entering any ntp command.html QUESTION NO: 67 What is a function of NPTv6? A.html QUESTION NO: 66 A network engineer is trying to implement broadcast-based NTP in a network and executes the ntp broadcast client command. Command Description ntp broadcast client Allows the system to receive NTP broadcast packets on an interface. B. It is checksum-neutral. It rewrites transport layer headers. 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 It maintains a per-node state." .cisco. It enables receiving NTP broadcasts on the interface where the command was executed. D. D.www. what is the result of the command? A. It enables receiving NTP broadcasts on all interfaces Reference: http://www. Assuming that an NTP server is already set up. Answer: C "Pass Any Exam. C. C. It interferes with encryption of the full IP payload. Any Time. It enables a device to receive NTP broadcast and unicast 105 . It enables a device to be an NTP peer to another device.

DNS64 Answer: C Explanation: NAT64 is a mechanism to allow IPv6 hosts to communicate with IPv4 servers. and nothing else. RFC 6146). but not to the servers. Which feature allows IPv6 devices to communicate with IPv4 servers? A. such as 106 .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. checksum-neutral. 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. Reference: http://tools. NAT64 D. The NAT64 server then creates a NAT-mapping between the IPv6 and the IPv4 address. NATng C. Any Time.actualtests. NPTv6 is defined to include a QUESTION NO: 68 IPv6 has just been deployed to all of the hosts within a network.www. The address-independence benefit stems directly from the translation function of the network prefix translator." . It is transport-agnostic with respect to transports that do not checksum the IP header. designed to provide address independence to the edge network.wikipedia. see RFC 6052. allowing them to communicate. algorithmic translation function. Reference: http://en. To avoid as many of the issues associated with NAPT44 as possible. NAT B. The IPv6 client embeds the IPv4 address it wishes to communicate with using these bits. and sends its packets to the resulting address. dual-stack NAT E.Cisco 300-101 Exam Explanation: RFC 6296 describes a stateless IPv6-to-IPv6 Network Prefix Translation (NPTv6) function.ietf. 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.

0.html QUESTION NO: 70 A network engineer executes the “ipv6 flowset” command. Flow-set marking in 1280-byte or larger packets is enabled. Any Time. as shown in the "TCP Connect Operation" figure in the "Information About the IP SLAs TCP Connect Operation" section. Flow-label marking in 1280-byte or larger packets is enabled. IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. there is no need to send the control message. Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10.0.1). B.www. In this example.Cisco 300-101 Exam A. 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.actualtests. This action allows the responder to reply to the TCP Connect operation. ipv6 flowset "Pass Any Exam. configure terminal 3. connection-oriented" . service-oriented C. connectionless-oriented B. IPv6 PMTU is enabled on the router. the control protocol is disabled on the source (Device B). What is the result? A. SUMMARY STEPS 1. because the target is not a Cisco device and a well-known TCP port is used. 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. D. In this example.0.0. The operation is scheduled to start 107 . enable 2.1 port 23 Reference: http://www. IPv6 flow control is enabled on the router.

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

" . 11 flows exported in 8 udp datagrams The total number of export packets sent. Which functions do the two commands serve in this scenario? "Pass Any 109 .Cisco 300-101 Exam Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10.1 Specifies the source address or interface. and the total number of flows contained within them.3. Version 5 flow records Specifies the version of the flow. 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.1. Exporting using source IP address 10.1 (1000) and 10.www.html QUESTION NO: 72 A network engineer is asked to configure a "site-to-site" IPsec VPN tunnel.actualtests. The ports are in parentheses. Reference: http://www.1. 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. possibly because another feature requires running on the Specifies the export destinations and ports.1. 0 flows failed due to lack of export packet No memory was available to create an export packet. 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 sent up to process level The packet could not be processed by CEF or by fast switching. Any Time. 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 0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being transmitted.

1 255.20.actualtests. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface ethernet 0 ip address 10.0 ip nat inside !--.Cisco 300-101 Exam A.1 255.255. interface serial 0 ip address 172.10.255. D.1 prefix 24 ! !--.16.255.Defines Ethernet 1 with an IP address and as a NAT inside interface.16.64 255." .com 110 .Defines a NAT pool named ovrld with a range of a single IP !--. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.255.0 ip nat outside !--.255.16.10. ip nat inside source list 7 pool ovrld overload ! "Pass Any Exam. The command access-list 1 defines interesting traffic that is allowed through the tunnel.16.10.1. C.10.Defines serial 0 with an IP address and as a NAT outside interface.10. 172.address.Defines Ethernet 0 with an IP address and as a NAT inside interface.1 172.255.www.10.10. interface ethernet 1 ip address 10.0 ip nat inside !--. ip nat pool ovrld 172. Any Time. 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. 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. B.

20.20. Which action will allow for manual switching of HSRP nodes? A." .0. D. ! 111 .31 !--. Adjust the HSRP priority without the use of preemption.10. If the line protocol of the specified interface goes down. which allows for maintenance mode. 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.0. access-list 7 permit 10.0. Track the up/down state of a loopback interface and shut down this interface during maintenance.Cisco 300-101 Exam ! ! ! !--. which allows multiple inside !--.0 through 10. Enable HSRPv2 under global configuration.are permitted by access-list 7 has the source address !--.0 0. Any Time.10.10.Translations are overloaded.10. Disable and enable all active interfaces on the active HSRP node. 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.actualtests.31.0 through 10. B.0. Note in the previous second configuration.10. the NAT pool "ovrld"only has a range of one address. the HSRP priority is reduced.0 0.20.shtml QUESTION NO: 73 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows.Access-list 7 permits packets with source addresses ranging from !--.10.www. Reference: http://www.10. as an alternative to powering down the active router and letting the network respond accordingly.31 access-list 7 permit 10.translated to an address out of the NAT pool named ovrld.Indicates that any packets received on the inside interface that ! to be translated to the same valid IP address. This means that another HSRP "Pass Any Exam.10. C.31 and 10.

com/en/US/docs/ios-xml/ios/netflow/configuration/12-4t/cfg-nflowdata-expt.actualtests. NetFlow D." . Syslog E.html QUESTION NO: 74 A network engineer is notified that several employees are experiencing network performance related issues. What can you determine based on this information? A. Reference: http://www. and bandwidth-intensive applications are identified as the root cause. Any Time. In order to identify which specific type of traffic is causing this slowness. Cisco IOS EEM Which feature should the engineer use to gather the required information? A. the network engineer is unable to see OUT traffic on the Loopback interfaces can be tracked.html QUESTION NO: 75 An organization decides to implement NetFlow on its network to monitor the fluctuation of traffic that is disrupting core services. Cisco Express Forwarding has not been configured globally. NetFlow output has been filtered by default. "Pass Any Exam.www. SNMP B. 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.Cisco 300-101 Exam router with higher priority can become the active router if that router has standby preempt enabled. After reviewing the output of NetFlow. 112 . information such as the source/destination IP and Layer 4 port numbers is required. a flow is identified as the combination of the following key fields: 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.

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

Any Time. Reference: 114 . 1-to-1. What is the best solution to ensure compliance with this new policy? "Pass Any Exam. status and statistics of the specified flow monitor D.actualtests. current status of the specified flow exporter C.www.html QUESTION NO: 76 A network engineer has left a NetFlow capture enabled over the weekend to gather information regarding excessive bandwidth utilization. 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" . and IPv6 to IPv6 translations at the Internet edge are performed. The following command is entered: switch#show flow exporter Flow_Exporter-1 What is the expected output? A. configuration of the specified flow exporter B.Cisco 300-101 Exam destination interfaces and so NetFlow Analyzer was not able to show the OUT traffic for the interfaces.html QUESTION NO: 77 A company's corporate policy has been updated to require that Reference: http://www.

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

there are important differences. Any Time. SLAAC Reference: http://www. Table 2.) dynamic Answer: A.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. 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. stateless 116 ." . The following table provides a high-level overview of the most relevant DHCPv6. manual D. automatic E. static F. flow monitor "Pass Any Exam.B Explanation: While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice versa. functional G. 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. stateful C. Manual.

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

1 and port UDP/5858.10.10. use the ip flow-export destination command in global configuration mode.1 5858? A.10. udp-port UDP protocol-specific port number. It configures the router to receive cache flow information about flows with destination IP 10.1 on port UDP/5858.10.html#wp1084291 QUESTION NO: 82 What is the result of the command ip flow-export destination 10.10. B. It configures the router to export cache flow information about flows with destination IP 10.10. Reference: "Pass Any Exam. C. Any 300-101 Exam provides NetFlow data on 1 percent of total traffic. Syntax Description ip-address IP address of the workstation to which you want to send the NetFlow information. The n value is a parameter from 1 to 65535 packets that you can configure.actualtests.1 and port UDP/ 118 ." . 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.www. It configures the router to receive cache flow information from IP 10.10.1 on port UDP/5858. It configures the router to export cache flow information to IP 10. Answer: A Explanation: To enable the exporting of information in NetFlow cache entries.

html#wp1023091 "Pass Any Any Time." .Cisco 300-101 Exam 119 .www.