Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 351:

  What are two mechanisms that directed ARP uses to help resolve IP addresses to hardware addresses? (Choose two)

  A. it removes address-resolution restrictions, allowing dynamic protocols to advertise routing information for the next-hop address.
  B. it uses a proxy mechanism to allow a device to respond to ARP request for the addresses of other devices.
  C. it removes address-resoultion restrictions, allowing dynamic protocols to advertise routing information for the device loopback address.
  D. it uses a series of ICMP echo messages to relay next-hop addresses.
  E. it uses ICMP redirects to advertise next-hop addresses to foreigh hosts.
  A. it removes address-resolution restrictions, allowing dynamic protocols to advertise routing information for the next-hop address.
  D. it uses a series of ICMP echo messages to relay next-hop addresses.

• Question 352:

  Which two statements about PIM snooping are true? (Choose two)

  A. It floods join and prune messages on all router ports.
  B. It requires designated forwarder election messages.
  C. When PIM snooping is enabled, the switch allows all multicast packets for each IP multicast group to send multicast packets to multicast router.
  D. It requires RGMP to be enabled on the VLAN.
  E. It requires IGMP snooping to be enabled on the switch.
  F. The ip pirn snooping command is an interface-level command.
  B. It requires designated forwarder election messages.
  E. It requires IGMP snooping to be enabled on the switch.

• Question 353:

  Refer to the exhibit.

  

  Which two statements about the implementation are true? (Choose two.)

  A. The PPP multilink protocol header is omitted on delay-sensitive packets.
  B. The maximum number of fragments is 1.
  C. Small real-time packets are multilink-encapsulated.
  D. A transmit queue is provided for smaller packets.
  A. The PPP multilink protocol header is omitted on delay-sensitive packets.
  D. A transmit queue is provided for smaller packets.

  ---

  Previous implementations of Cisco IOS Multilink PPP (MLP) include support for Link Fragmentation Interleaving (LFI). This feature allows the delivery of delay- sensitive packets, such as the packets of a Voice call, to be expedited by omitting

  the PPP Multilink Protocol header and sending the packets as raw PPP packets in between the fragments of larger data packets. This feature works well on bundles consisting of a single link. However, when the bundle contains multiple links

  there is no way to keep the interleaved packets in sequence with respect to each other. The Multiclass Multilink PPP (MCMP) feature in Cisco IOS Release 12.2(13)T addresses the limitations of MLP LFI on bundles containing multiple links

  by introducing multiple data classes.

  With multiclass multilink PPP interleaving, large packets can be multilink-encapsulated and fragmented into smaller packets to satisfy the delay requirements of real-time voice traffic; small real-time packets, which are not multilink

  encapsulated, are transmitted between fragments of the large packets. The interleaving feature also provides a special transmit queue for the smaller, delay-sensitive packets, enabling them to be transmitted earlier than other flows.

  Interleaving provides the delay bounds for delay-sensitive voice packets on a slow link that is used for other best-effort traffic.

  References:

  http://www.cisco.com/c/en/us/td/docs/ios/dial/configuration/guide/12_4t/dia_12_4t_book/dia _multiclass_link_ppp.pdf http://www.cisco.com/c/en/us/td/docs/routers/access/500/520/software/configuration/guide/

  520_SCG_Book/520scg_concepts.html

• Question 354:

  Refer to the exhibit.

  

  R2 is configured as the R1 neighbor in area 51, but R2 fails to receive the configured summary route. Which action can you take to correct the problem?

  A. Replace the summary-address command with the area-range command.
  B. Configure a summary address under R1interface GigabitEthernet0/0.
  C. Configure a summary address under R1 interface GigabitEthernet1/0.
  D. Configure the no discard-route command in the OSPF process of R1.
  E. Configure ip ospf network broadcast under the Loopback0 interface of R1.
  A. Replace the summary-address command with the area-range command.

• Question 355:

  Which circumstance can cause TCP starvation and UDP dominance to occur?

  A. Too few queues are available.
  B. UDP is comprised of smaller packets than TCP.
  C. Retransmitted TCP packets are on the network.
  D. UDP and TCP data are assigned to the same service-provider class.
  D. UDP and TCP data are assigned to the same service-provider class.

• Question 356:

  Which two features are used for inspection when IPv6 address glean is enabled? (Choose two.)

  A. DHCP messages
  B. ND messages
  C. ICMPv6 messages
  D. UDP messages
  E. TCP messages
  A. DHCP messages
  B. ND messages

  ---

  IPv6 address glean is the foundation for many other IPv6 features that depend on an accurate binding table. It inspects ND and DHCP messages on a link to glean addresses, and then populates the binding table with these addresses. This feature also enforces address ownership and limits the number of addresses any given node is allowed to claim.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios-xml/ios/ipv6_fhsec/configuration/15- s/ip6f-15-s-book/ip6-snooping.html

• Question 357:

  Refer to the exhibit.

  

  If you apply this configuration to a device on your network, which class map cannot match traffic?

  A. CM-EXAMPLE-3
  B. CM- EXAMPLE-1
  C. CM-EXAMPLE-4
  D. CM-EXAMPLE-5
  E. CM-EXAMPLE-2
  A. CM-EXAMPLE-3

• Question 358:

  Refer to the exhibit.

  

  Which two pieces of information in this Wireshark capture indicate that you are viewing EIGRP traffic? (Choose two.)

  A. the header length
  B. the protocol number
  C. the destination address
  D. the Class Selector
  E. the source address
  F. the header checksum
  B. the protocol number
  C. the destination address

  ---

  EIGRP uses protocol number 88, which shows as EIGRP in the capture. Also, we in the capture that the destination IP address is 224.0.0.10, which is the Enhanced Interior Gateway Routing Protocol (EIGRP) group address is used to send routing information to all EIGRP routers on a network segment.

• Question 359:

  DRAG DROP

  Drag each IS-IS command on the left to its effect on the right.

  Select and Place:

  

  

• Question 360:

  Which authentication types does OSPF support?

  A. null and clear text
  B. MD5 only
  C. MD5 and clear text
  D. null, clear text, and MD5
  E. clear text only
  D. null, clear text, and MD5