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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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the size of these queues is also 4 .C. The simplest technique to limit queue size is known as tail drop. tail drop C. Although some UDP applications have application-level windowing. windowing E. the introduction of a sudden burst of traffic may cause large numbers of established. rather than discarding QUESTION NO: 4 Which three problems result from application mixing of UDP and TCP streams within a network with no QoS? (Choose three. lower throughput Answer: A.) A. random early detection D. However. starvation B. While the network is stable.actualtests. jitter C. Specifically. to allow them to hold packets when the network is busy." .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. until there is space in the queue again. Any Time. 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. Routers on the Internet normally have packet queues. 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. latency D. This causes problems when used on TCP/IP routers handling multiple TCP streams. Because routers have limited resources. the queue is constantly full.wikipedia. flow control. TCP transmitters will throttle-back flows when drops have been detected. and then any new packets are simply discarded. steady streams to lose packets simultaneously. Reference: http://en. especially when bursty traffic is present.Cisco 300-101 Exam B. The queue is allowed to fill to its maximum size. and retransmission capabilities. and there are no problems except that the full queue results in high latency.www.

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

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

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

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

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

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

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

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

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

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

Step 6 Router(config-if)# dialer-group group-number Assigns the dialer interface to a dialer group. Any Time. 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 15 . 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. Step 9 Router(config-if)# dialer persistent [delay [initial] seconds | max-attempts number] Forces a dialer interface to be connected at all times. Step 5 Router(config-if)# dialer pool number Specifies the dialing pool to use for calls to this _persist.Cisco 300-101 Exam Step 2 Router(config-if)# ip address address mask Specifies the IP address and mask of the dialer interface as a node in the destination network to be called. Reference: http://www.html QUESTION NO: 16 Which PPP authentication method sends authentication information in cleartext? "Pass Any Exam.actualtests." .cisco. even in the absence of interesting traffic. Step 3 Router(config-if)# encapsulation type Specifies the encapsulation type. 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.

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

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

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

0.actualtests.0/24 network. Which message is required to obtain a global unicast address when a router is present? A.0/8 network will not be advertised by Router B because the network statement for the 10. D. Traffic from the 172.0. the next neighbor(s) will not know about anything except the route and therefore won't send it to anyone else downstream. QUESTION NO: 22 A router with an interface that is configured with ipv6 address autoconfig also has a link-local address assigned.0/8 network because it is blocked by the ACL. The 10.0/8 network can successfully ping users on the 192.0. Any Time.0.0.0/24 cannot successfully ping users on the 10.Cisco 300-101 Exam Which one statement is true? A. YOU won't know about the route and therefore won't send it to anyone else downstream.0. E. If you filter inbound.0. DHCPv6 request "Pass Any 19 . Router B will not advertise the 10.0. The 10.0/8 network.0. If you filter outbound.www.0/8 network is missing from Router B. C.0." . Answer: E Explanation: You can filter what individual routes are sent (out) or received (in) to any interface within your EIGRP configuration.0/16 network will be blocked by the ACL.0/8 network will not be in the routing table on Router B.0. but users on the 192.16.0. B.168. Users on the 10.5. One example is noted above.0.

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

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

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

discover messages B. Reference: http://www.actualtests. 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. • The switch receives a packet on an untrusted interface. and the interface information in the binding table does not match the interface on which the message was received.html QUESTION NO: 27 Refer to the 23 . DHCPACK. DHCPNAK.0.0.www. This check is performed only if the DHCP snooping MAC address verification option is turned on. "Pass Any Exam. or DHCPLEASEQUERY packet) from a DHCP server outside the network or firewall. traffic from a trusted DHCP server to client D. Any Time. • The switch receives a DHCP packet that includes a relay agent IP address that is not 0. To support trusted edge switches that are connected to untrusted aggregation-switch ports. • The switch receives a DHCPRELEASE or DHCPDECLINE message from an untrusted host with an entry in the DHCP snooping binding table." . 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.Cisco 300-101 Exam QUESTION NO: 26 Which type of traffic does DHCP snooping drop? A. and the source MAC address and the DHCP client hardware address do not you can enable the DHCP option-82 on untrusted port feature. DHCP messages where the source MAC and client MAC do not match Configure the port on the edge switch that connects to the aggregation switch as a trusted port. which enables untrusted aggregationswitch ports to accept DHCP packets that include option-82 information.

0/24 network. 10.0/8 networks.” QUESTION NO: 28 Which prefix is matched by the command ip prefix-list name permit 10.0. allowing only Any Time.8. distribute list 2 out FastEthernet0/0 Answer: D Explanation: Access list 2 is more specific.2.0/24 B.0. "Pass Any Exam.0/24 network out of FastEthernet 0/0? A.2." .0/16 D. 10. distribute list 1 out FastEthernet0/0 C.0.x.3. distribute list 2 out D.0/ matches this.0.8.9. so only a /24 is both greater than or equal to 24 and less than or equal to 24. the ge 24 term means greater than or equal to a /24 and the le 24 means less than or equal to /24. Only the choice of 24 . distribute list 1 out B. This question also asks us to apply this distribute list only to the outbound direction of the fast Ethernet 0/0 interface. so the correct command is “distribute list 2 out FastEthernet0/0. 10.0/24 C.www.8. This translate to any prefix in the 10.0/16 ge 24 le 24? A.0/23 Answer: B Explanation: With prefix lists.Cisco 300-101 Exam Which command only announces the 1. 10.0. whereas access list 1 permits all 1.3.0. where X is any value in the 0-255 range.

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

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

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

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. However. ROUTE. if's corporate implementation guidelines require: • The OSPF process ID for all routers must be 10.actualtests. • The routing protocol for each interface must be enabled under the routing 28 possible. When an RA is sent in response to a router solicitation. The loopbackO interface on NewYork is in Area 1. The SO/O interface on Chicago and the SO/1 interface on NewYork are in Area 0. such as the hop limit and MTU a host should use in packets that it originates Reference: http://www. OSPF has been configured on routers Chicago and NewYork. • The routing protocol must be enabled for each interface using the most specific wildcard mask "Pass Any Exam. You have been asked to complete the implementation to allow this the destination address in the RA message is the unicast address of the source of the router solicitation message. Currently the implementation is partially completed.www. the amount of time (in seconds) the router should be used as a default router) • Additional information for hosts. they cannot ping from the serial interface of the Seattle router to the loopback interface of the NewYork router.html QUESTION NO: 32 CORRECT TEXT Route. Any Time.Cisco 300-101 Exam router solicitation messages is the all-routers multicast address with a scope of the is a small IT corporation that is attempting to implement the network shown in the exhibit." . .

168.168.actualtests.www.6/30 .5/30 .189 Secret Password: cisco "Pass Any Exam." .168.9/30 .189.Cisco 300-101 Exam Network Information Seattle S0/0 between Chicago and NewYork Loopback0 172.168.Link between Seattle and Chicago Secret Password: cisco Chicago S0/0 29 .10/30 . Any Time.16.Link between Chicago and NewYork S0/1 192.Link between Seattle and Chicago Secre Password: cisco NewYork S0/1 192.16.

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

com 31 . we need to find the network address and wildcard mask of 192. IP Address: 192. but the overall solution is the same. and router hostnames may change. Any Time. 256-252 = 4. So." . hence the subnets will increment by 4.168.255. OSPF areas and process ID.168.5/30 in order to configure the OSPF.255.16.16.Cisco 300-101 Exam Answer: Here is the solution below: Explanation: Note: In actual exam.252 Here subtract 252 from 2565. First.www. the IP addressing.16.5 /30 Subnet Mask: 255.168. Seattle’s S0/0 IP Address is 192. find the 4th octet of the Network Address: "Pass Any Exam.5/30.actualtests.

3 area 21 One of the tasks states that area 21 should not receive any external or inter-area routes (except the default route).5) belongs to subnet 1 (4 to 7)." .16. Seattle>enable Password: Seattle#conf t Seattle(config)#router ospf 10 Seattle(config-router)#network 192. Seattle(config-router)#area 21 stub Seattle(config-router)#end "Pass Any Exam. Lets find the wildcard mask of /30. Any Time.4 0. Network Address: 192. Host Bits – 0’s) Lets find the wildcard mask of / 32 .168. Subnet Mask: (Network Bits – 1’s.16.Cisco 300-101 Exam The 4th octet of IP address (192.0.www.actualtests.168.4 Broadcast Address: 192. Now we configure OSPF using process ID 10 (note the process ID may change to something else in real exam).

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

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

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

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

0 255.0/8 to summary. There is one interesting thing about the output of the show ip route shown above: the 10.0 at the interface s0/0 of R4 to summary.0. which is a directly connected network of R3.0.0/ Just for your information.0.0 255.www.255. notice that if you use another network than 10.0.0. we will use the ip summary-address eigrp 123 10. the s0/0 interface of R4.0.0 Now we jump back to R3 and use the show ip route command to verify the effect.2.0.0. for example.2.2.actualtests. We can’t get rid of it in the routing table no matter what technique we use to summary the networks.0 37 .2. 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.0.0 so that all the ping can work well. R4> enable R4# conf t R4(config)# interface s0/0 R4(config-if)# ip summary-address eigrp 123 10." . Any Time. if you use the command ip summary-address eigrp 123 10. to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet.255.0. Therefore.0 you will leave a /16 network in the output of the show ip route command.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 R3.255.0. In conclusion. In the output if we don’t see the summary line (like 10.0 255.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.2. "Pass Any Exam.

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.

"Pass Any Exam. Any Time." -


Cisco 300-101 Exam

"Pass Any Exam. Any Time." -


Cisco 300-101 Exam

"Pass Any Exam. Any Time." -


www. 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.actualtests." . first issue the show running-config on all of 4 routers.Cisco 300-101 Exam Answer: Here is the solution below: Explanation: To troubleshoot the 41 .

4. where this is not possible. not R2's router-id 2.3 R4(config-router)#end After finishing the configuration doesn’t forget to ping between R1 and R4 to make sure they work. one via a frame relay link and one via an EoMPLS link. + Configure virtual link on R2 (from the first output above.4"): R3>enable R3#configure terminal R3(config)#ipv6 router ospf 1 R3(config-rtr)#no area 54 virtual-link 4.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).3 Save the configuration: R2(config-rtr)#end R2#copy running-config startup-config (Notice that we have to use neighbor router-id 3. too.www. routers R2 and R3 must be configured with the area <area id> virtuallink <neighbor router-id> Save the configuration: R3(config-rtr)#end R3#copy running-config startup-config You should check the configuration of R4. Make sure to remove the incorrect configuration statements to get the full points.4. Any Time. QUESTION NO: 35 CORRECT TEXT You are a network engineer with ROUTE. a small IT company.2. R4(config)#ipv6 router ospf 1 R4(config-router)#no area 54 virtual-link 3.3.2) + Configure virtual link on R3 (from the second output above.3. Therefore.2. The area through which you configure the virtual link is known as a transit 42 .3. we learned that the OSPF process ID of R3 is 1 and we have to disable the wrong configuration of "area 54 virtual-link 4.2.3." . we can use a virtual link to connect to the backbone through a non-backbone area. use the show ipv6 route command. 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. In this case.4.actualtests. Note. IT policy "Pass Any Exam.3. If you want to check the routing information.4.3. ROUTE. the area 11 will become the transit area. In some cases. not "show ip route" has two connections to the Internet.4 R3(config-rtr)#area 11 virtual-link 2.

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

"Pass Any Exam. You have been tasked with completing the implementation and ensuring that the network requirements are met. a small IT company. The redundant paths from the OSPF network to the EIGRP network must be available in case of a link failure.100. 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 172.1. You may add new commands or change default values. You may not remove or change any of the configuration commands currently on any of the routers.100. All traffic must use the shortest path that provides the greatest bandwidth. A previous network engineer has started the merger implementation and has successfully assigned and verified all IP addressing and basic IGP routing." . QUESTION NO: 36 CORRECT TEXT You are a network engineer with ROUTE.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.actualtests. They have recently merged two organizations and now need to merge their networks as shown in the topology exhibit.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. R4 has been added to the existing OSPF network to provide the interconnect between the OSPF and EIGRP One network is using OSPF as its IGP and the other is using EIGRP as its IGP. No static or default routing is allowed in either network. Two links have been added that will provide redundancy. Any Time.www.1. After that configure the route map and then apply it on the interface to the server in EIGRP 44 .

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. Any Time. Reliability. notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond.100. If the delay is 20000us then we need to divide it by 10. 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.16. Delay=1000 us. "Pass Any Exam. Reliability=255.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this 45 . 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. Delay=20000 us. Load. Delay. 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. For example. Load=1. we get Bandwidth=1544 Kbit.Cisco 300-101 Exam Answer: First we need to find out 5 parameters (Bandwidth. Load=1. Reliability=255.actualtests.www." . these parameters are just used for reference and we can use other parameters with no problem.

QUESTION NO: 37 You have been asked to evaluate how EIGRP is functioning in a customer network. which is better than R1 -> R2 -> R4. we must put the command below under EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4).www. Any Time.Cisco 300-101 Exam Note: If the link between R2 and R3 is FastEthernet link. 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. "Pass Any 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. 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.

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

" .Cisco 300-101 Exam "Pass Any Exam. Any 48 .

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

Cisco 300-101 Exam Answer: D Explanation: First.6.6.6." 50 . so we issue the “show ip route 150.actualtests.6” command from R1 and see this: "Pass Any Exam. find the IP address of the loopback0 interface on R6: We see that it is 150. Any Time.1.www.

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

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

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

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

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

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

Cisco 300-101 Exam "Pass Any Exam.www. Any Time." 57 . 58 ." .Cisco 300-101 Exam "Pass Any Exam. Any Time.www.

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

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

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

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

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

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

0 route. QUESTION NO: 41 You have been asked to evaluate how EIGRP is functioning in a customer network." .actualtests.46.168.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. Any Time.www. "Pass Any Exam. which is shows as 1810944 for the 65 .

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

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

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

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

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.

"Pass Any Exam. Any Time." -


Cisco 300-101 Exam

"Pass Any Exam. Any Time." -


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

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

" 75 . 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.

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

com 79 .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. The customer has disabled your access to the show runningconfig command. "Pass Any Exam.www." . Any Time.actualtests.

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9 D. 5 C.www.actualtests. Any Time. 1 B. 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.Cisco 300-101 Exam How many times was SPF algorithm executed on R4 for Area 1? A. 20 E. 54 83 ." .

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

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

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

Conversely. interface fa0/0 bandwidth 1536 ip address 209. interface fa 0/0 bandwidth 1536 ip address 209.165. The mGRE configuration is as follows: ! interface Tunnel0 bandwidth 1536 "Pass Any Exam. Which interface configuration output can be applied to the corporate router to allow communication to the remote sites? A.255.231 255.200. effectively they have the tunnel mode gre command. a p2p GRE tunnel may connect to an mGRE tunnel. interface Tunnel0 bandwidth 1536 ip address 209.2 tunnel destination 209.165. Any Time.230 255. interface Tunnel0 bandwidth 1536 ip address 209.x.x.201. tunnel interfaces by default are point-topoint (p-p) using GRE encapsulation.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.255. Instead the GRE tunnel is configured with the command tunnel mode gre multipoint.255.168.200.actualtests. Besides allowing for multiple destinations.www.1 tunnel-mode dynamic D.165. which is not seen in the configuration because it is the default.200.255. Note. An mGRE interface does not have a configured destination.161. an mGRE tunnel requires NHRP to resolve the tunnel endpoints.224 tunnel mode gre multipoint C.x found with p2p GRE tunnels.224 tunnel source 209.165.200. The distinguishing feature between an mGRE interface and a p2p GRE interface is the tunnel destination.255.231 255.224 tunnel source 192.224 tunnel source Serial0/0 tunnel mode gre multipoint 90 .255.255. This means that an mGRE tunnel on the hub may connect to a p2p tunnel on the branch.165. This command is used instead of the tunnel destination x." .201.1 tunnel-mode dynamic Answer: A Explanation: The configuration of mGRE allows a tunnel to have multiple destinations.230 255. The configuration of mGRE on one side of a tunnel does not have any relation to the tunnel properties that might exist at the exit points.255.

com 91 . interface: FastEthernet0 Crypto map tag: test. tagged packets E." . #pkts digest 7767918 #pkts decaps: 7760382. local addr.1. #pkts decompressed: 0 #pkts not compressed: 0. remote crypto endpt.0/255.1.2 "Pass Any Exam. The encrypted tunnel is built between 12. #pkts compr. #pkts decompress failed: This output shows an example of the show crypto ipsec sa command (bolded ones found in answers for this question).1. 12. Which three pieces of information are displayed in the output? (Choose three.1 local ident (addr/mask/prot/port): (20.62. #pkts decrypt: 7760382.0/0/0) remote ident (addr/mask/prot/port): (10.: 12.1.1 and 12.: failed: 0.0 and #recv errors 0 local crypto endpt. untagged packets F. invalid identity packets Answer: A.255. flags={origin_is_acl. Authentication Header (AH) is not used since there are no AH SAs.255.actualtests.Cisco 300-101 Exam ip address 10.10 Phase2.2 PERMIT.0 tunnel source Serial0/0 tunnel mode gre multipoint Reference: http://www.1.1. remaining key lifetime C. #pkts verify 7760382 #pkts compressed: 0.html QUESTION NO: 47 A network engineer executes the show crypto ipsec sa command.2 for traffic that goes between networks 20. You can see the two Encapsulating Security Payload (ESP) SAs built inbound and outbound. inbound crypto map B.www.255.0.1.) A. path MTU D. Any Time. #pkts encrypt: 7767918.} #pkts encaps: 7767918.1.B.1.0/0/0) current_peer: 12. #send errors 1.1.C Explanation: show crypto ipsec sa This command shows IPsec SAs built between peers.1.

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. flow_id: 1444.www.1. Tunnel1 created 92 .cisco. flow_id: 1443. Any Time.2.html QUESTION NO: 48 Refer to the following output: Router#show ip nhrp detail 10. } slot: 0.2." . media mtu 1500 current outbound spi: 3D3 inbound esp sas: spi: 0x136A010F(325714191) transform: esp-3des esp-md5-hmac . Flags: authoritative unique nat registered used NBMA address: 10.Cisco 300-101 Exam path mtu 1500.12.2 "Pass Any Exam. conn id: 3443. expire 01:59:47 TypE.1. } slot: 0.actualtests. in use settings ={ in use settings ={Tunnel.2/8 via 10. dynamic. 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 . conn id: 3442.

11 10. B.1111. • The interface type and number and how long ago it was created (hours:minutes:seconds). • Type of interface: – dynamic—NBMA address was obtained from the NHRP Request packet. NHRP mapping is for networks that are local to this router. . The mapping entry was created in response to an NHRP registration request. D.Cisco 300-101 Exam What does the authoritative flag mean in regards to the NHRP information? A. 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: 10.255.1111.1 255.www.1111. Data packets are process switches for this mapping entry. – static—NBMA address was statically configured.255.255.1111. C. tunnel 100 created 0:00:43 expire 1:59:16 Type: dynamic Flags: authoritative NBMA address: 10. NHRPAny information was obtained from the Next Hop Server "Pass Time.2 The fields in the sample display are as follows: • The IP address and its network mask in the IP-to-NBMA address cache.255. E.2 255.0.255. • The time in which the positive and negative authoritative NBMA address will expire (hours:minutes:seconds).255. • Flags: – authoritative—Indicates thatAny theExam.255.1. The NHRP mapping entry cannot be overwritten.1.255.1111.255 because Cisco does not support aggregation of NBMA information through NHRP.actualtests.0.1111.1111. It was obtained directly from the next-hop server." 93 or router that maintains the NBMA-to-IP address mapping for a particular destination. This value is based on the ip nhrp holdtime command. The mask is always 255.1111.0.1111.

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

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

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

www. B. You can use the KRON scheduler. which method can you use in combination with the “debug ip packet” command to limit the amount of output data? A. IPv6 access list has just one entry. You can use the RITE traffic exporter. Any Time. QUESTION NO: 55 For troubleshooting purposes." .Cisco 300-101 Exam Topic 5. You can use an IOS 97 . E. only ssh traffic to vty 0 4 from source 2001:DB8:0:4::32 D. all traffic to vty 0 4 from source 2001:DB8:0:4::32 B. which allows only the single IPv6 IP address of 2001:DB8:0:4::32 to connect using SSH only. D. C. 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. only ssh traffic to vty 0 4 from source all C. You can disable the IP route cache globally. You can use an extended access list.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. This command should be used with caution in production networks. D. Answer: C Explanation: Logging-enabled access control lists (ACLs) provide insight into traffic as it traverses the network or is dropped by network devices.html QUESTION NO: 56 Refer to the following access list. A large amount of IP traffic is being permitted on the router. A packet that matches access-list with the "log" keyword is fast switched. the network engineer notices that the router CPU utilization has risen to 99 percent. Always use with the access-list command to apply an extended ACL to the debug 98 .com/c/en/us/support/docs/security/dynamic-multipoint-vpndmvpn/111976-dmvpn-troubleshoot-00. Any Time.www. source address "Pass Any Exam.Cisco 300-101 Exam The debug ip packet command generates a substantial amount of output and uses a substantial amount of system resources.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. C. Reference: http://www." .cisco. ACL logging can be CPU intensive and can negatively affect other functions of the network device. access-list 100 permit ip any any log After applying the access list on a Cisco router. A packet that matches access-list with the "log" keyword is process switched. What is the reason for this? Reference: http://www. A packet that matches access-list with the "log" keyword is Cisco Express Forwarding switched. 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.

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

192. Additionally. B.0. Administrators can change this behavior using the allow-default option.255 and logs any intrusion attempts.0 . Answer: C Explanation: The private IP address ranges defined in RFC 1918 are as follows: 10. which is applied on the external interface FastEthernet 1/0 of the perimeter 100 . a packet that contains a source address for which the return route points to the Null 0 interface will be dropped. An access list may also be specified that permits or denies certain source addresses in Unicast RPF loose mode.0-192. D.0." .0.168. C.10. Although asymmetric traffic flows may be of concern when deploying this feature.15. Unicast RPF loose mode is a scalable option for networks that contain asymmetric routing paths. It prevents the internal network from being used in spoofed denial of service attacks and logs any exit to the Internet.html QUESTION NO: 59 What does the following access 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. any log router (config)#access-list 101 deny ip 172. It filters incoming traffic from private addresses in order to prevent spoofing and logs any intrusion attempts. the source address must appear in the routing table.actualtests.0.0172.255. which allows the use of the default route in the source verification process.255.0 0.0 0.255 any log router (config)#access-list 101 deny ip 192.0. It prevents incoming traffic from IP address ranges 10. accomplish? router(config)#access-list 101 deny ip 300-101 Exam When administrators use Unicast RPF in loose 0.255. It prevents private internal addresses to be accessed directly from outside. Any Time.0.www.0. Reference: http://www.31. 172.16.0-10.255 "Pass Any Exam.168. 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.

255 192.www.192.0. Reference: C.Cisco 300-101 Exam 172.31. but the port number must be higher than 1024 unless the default is used. The router will listen to HTTP and HTTP traffic on port 4433. The log keyword also enables logging of this intrusion attempt. D. use the ip http secure-port command in global configuration 101 .0 . The router will listen on port 4433 for HTTP traffic.html#wp3612805529 "Pass Any Exam. Answer: A Explanation: To set the secure HTTP (HTTPS) server port number for listening.0. The router will listen on port 4433 for HTTPS use the no form of this command. This ACL is used to prevent all packets with a spoofed reserved private source IP address to enter the network. The router will never accept any HTTP and HTTPS traffic.255. Any Time. QUESTION NO: 60 Refer to the following command: router(config)# ip http secure-port 4433 Which statement is true? A.172. The default is 443. To return the HTTPS server port number to the default.168.0 .255 These IP addresses should never be allowed from external networks into a corporate network as they would only be able to reach the network from the outside via routing problems or if the IP addresses were spoofed. 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." . B.168.16.

router(config-if)#udp helper-address 172. router(config)#snmp-server host 172." . router(config)#snmp-server host 172. Infrastructure Services QUESTION NO: 62 A network engineer is configuring SNMP on network devices to utilize one-way SNMP notifications.16.actualtests.201.225 138• Bootstrap Protocol (BOOTP) .225 69 53 49 Answer: A Explanation: To let a router forward broadcast packet the command ip helper-address can be used. router(config)#snmp-server host Any Time.28 traps version 3 auth CISCORO D.20. router(config-if)#ip helper-address 172. 53.ip helper-address {ip address}When configuring the ip helper-address command.28 informs version 2c CISCORO C.20.201.28 informs version 3 auth CISCORO Answer: A Explanation: Most network admins and engineers are familiar with SNMPv2c which has become the dominant SNMP version of the past decade.201. router(config)#snmp-server host 172. The broadcasts will be forwarded to the unicast address which is specified with the ip helper command.14. Which command should be applied to the configuration to allow this? A. the following broadcast packets will be forwarded by the router by default:• TFTP .UDP port 69 • Domain Name System (DNS) – UDP port 53• Time service .14. and 49 to 172.16.14. 102 .225 C.www. It’s simple to configure on both the router/switch-side and just as easy on the network monitoring server.20. router(config-if)#ip udp helper-address 172.14.port 37• NetBIOS Name Server .14.20.html Topic 6. The problem of course is that the SNMP statistical "Pass Any Exam. Which command satisfies the requirements of this scenario? A.225.Cisco 300-101 Exam QUESTION NO: 61 A network engineer is configuring a routed interface to forward broadcasts of UDP 69.225 D.16.port 67• TACACS – UDP port 49 Reference: http://www.20.16. router(config-if)#ip helper-address 172.28 traps version 2c CISCORO B.port 137• NetBIOS Datagram Server . the engineer is not concerned with authentication or encryption.

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

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

It is checksum-neutral. It enables a device to receive NTP broadcast and unicast packets. C. D. It enables receiving NTP broadcasts on all interfaces globally. Reference: http://www.html QUESTION NO: 67 What is a function of NPTv6? It maintains a per-node It enables a device to be an NTP peer to another device. It enables receiving NTP broadcasts on the interface where the command was executed. It rewrites transport layer headers. D. When you use the ntp broadcast client command." . Any Time. Command Description ntp broadcast client Allows the system to receive NTP broadcast packets on an interface. Answer: A Explanation: The NTP service can be activated by entering any ntp command. Answer: C "Pass Any 105 . B. B. It interferes with encryption of the full IP payload. the NTP service is activated (if it has not already been activated) and the device is configured to receive NTP broadcast packets on a specified interface simultaneously. Assuming that an NTP server is already set up. what is the result of the command? 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.Cisco 300-101 Exam Using remote copy protocol (rcp) • Using a Flash disk Reference:

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

www. C.0. The operation is scheduled to start immediately.0. enable 2.html QUESTION NO: 70 A network engineer executes the “ipv6 flowset” command. IPv6 PMTU is enabled on the router. SUMMARY STEPS 1. as shown in the "TCP Connect Operation" figure in the "Information About the IP SLAs TCP Connect Operation" section. IPv6 flow control is enabled on the router. connection-oriented connectionless-oriented B. the control protocol is disabled on the source (Device B). because the target is not a Cisco device and a well-known TCP port is used. In this example.actualtests. What is the result? Device A (target device) Configuration configure terminal ip sla responder tcp-connect ipaddress 10. service-oriented C. Any Time. IP SLAs uses the control protocol to notify the IP SLAs responder to enable the target port temporarily. D. In this 107 . This action allows the responder to reply to the TCP Connect operation.Cisco 300-101 Exam A. there is no need to send the control message. Flow-set marking in 1280-byte or larger packets is enabled. ipv6 flowset "Pass Any Exam.1 port 23 Reference: http://www.0. Flow-label marking in 1280-byte or larger packets is enabled. B. 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. configure terminal 3." . 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 10.0.

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

0 export packets were dropped due to output drops Indicates that the send queue was full while the packet was being Specifies the source address or interface.1. possibly because another feature requires running on the 109 . 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. Exporting using source IP address 10. 0 export packets were dropped due to no fib 0 export packets were dropped due to adjacency issues Indicates that CEF was unable to switch the packet or forward it up to the process level. 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.1 (1000) and Reference: http://www.html QUESTION NO: 72 A network engineer is asked to configure a "site-to-site" IPsec VPN tunnel. The ports are in parentheses. and the total number of flows contained within them." . 0 export packets were sent up to process level The packet could not be processed by CEF or by fast switching.1.1. 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. Any Time.actualtests.2.3. 0 flows failed due to lack of export packet No memory was available to create an export packet.Cisco 300-101 Exam Explanation: Table 5 show ip flow export Field Descriptions Field Description Exporting flows to 10. Which functions do the two commands serve in this scenario? "Pass Any Exam. Version 5 flow records Specifies the version of the flow.1 Specifies the export destinations and ports. 11 flows exported in 8 udp datagrams The total number of export packets sent.

16. The command access-list 1 defines interesting traffic that is allowed through the tunnel.Defines Ethernet 0 with an IP address and as a NAT inside interface.Defines Ethernet 1 with an IP address and as a NAT inside interface. interface ethernet 1 ip address 10. 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 110 .1 prefix 24 ! !--.16. C. 172.address. ip nat inside source list 7 pool ovrld overload ! "Pass Any Exam.255.Cisco 300-101 Exam A." .255. The command access-list 1 permit any defines only one machine that is allowed through the tunnel.Defines a NAT pool named ovrld with a range of a single IP !--.255.actualtests.1 255. interface serial 0 ip address 172. ip nat pool ovrld 172.www.20.10.0 ip nat inside !--.10.0 ip nat outside !--.Defines serial 0 with an IP address and as a NAT outside interface.64 255.255.16. Any Time. B. 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. Answer: D Explanation: Configuring NAT to Allow Internal Users to Access the Internet Using Overloading NAT Router interface ethernet 0 ip address 10.1.1 172.255.0 ip nat inside !--. D.1 255.

Cisco 300-101 Exam ! ! ! !--.Access-list 7 permits packets with source addresses ranging from !--.31 and 10. which allows multiple inside !--.0 0.0 through 10.0. Enable HSRPv2 under global configuration.10.www.are permitted by access-list 7 has the source address !--.shtml QUESTION NO: 73 A network engineer is configuring a solution to allow failover of HSRP nodes during maintenance windows.Translations are overloaded.10. the NAT pool "ovrld"only has a range of one address.actualtests.10. Which action will allow for manual switching of HSRP nodes? A.translated to an address out of the NAT pool named ovrld.20. 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. 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. Track the up/down state of a loopback interface and shut down this interface during maintenance.31 !--. which allows for maintenance mode.20. Reference: http://www.10. D. C. !--.20. Disable and enable all active interfaces on the active HSRP node.10. Adjust the HSRP priority without the use of 111 . Note in the previous second configuration.10. B. If the line protocol of the specified interface goes down. as an alternative to powering down the active router and letting the network respond access-list 7 permit 10.0 through 10." .31.10.devices to be translated to the same valid IP address. 0. access-list 7 permit 10. the HSRP priority is reduced. This means that another HSRP "Pass Any Exam.10.Indicates that any packets received on the inside interface that !--. Any

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

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

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

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

B Explanation: While stateful and stateless NAT64 perform the task of translating IPv4 packets into IPv6 packets and vice Manual. 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. Any Time. The following table provides a high-level overview of the most relevant differences.) A. there are important manual D. stateless B.html QUESTION NO: 80 Which NetFlow component is applied to an interface and collects information about flows? A. 116 . dynamic Answer: A. automatic E.actualtests. flow monitor "Pass Any Exam. static F. functional G.www." . 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. Table 2. SLAAC Reference: http://www.Cisco 300-101 Exam QUESTION NO: 79 Which two methods of deployment can you use when implementing NAT64? (Choose two. stateful C.

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

www. It configures the router to receive cache flow information from IP 10.1 and port UDP/5858. 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. udp-port UDP protocol-specific port number. The n value is a parameter from 1 to 65535 packets that you can configure. use the ip flow-export destination command in global configuration mode.10.10.10. B.Cisco 300-101 Exam provides NetFlow data on 1 percent of total traffic.1 and port UDP/5858. It configures the router to export cache flow information to IP 10." . C. It configures the router to export cache flow information about flows with destination IP 118 . D.actualtests. Answer: A Explanation: To enable the exporting of information in NetFlow cache entries.1 on port UDP/5858.1 5858? A.1 on port UDP/ Reference: "Pass Any Exam.10.10. Any Time. It configures the router to receive cache flow information about flows with destination IP 10.html#wp1084291 QUESTION NO: 82 What is the result of the command ip flow-export destination 10.10. Syntax Description ip-address IP address of the workstation to which you want to send the NetFlow

html#wp1023091 "Pass Any" .com 119 .Cisco 300-101 Exam http://www.actualtests. Any