Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 461:

  Which PIM mode can forward traffic by using only (*.G) routing table entries?

  A. dense mode
  B. sparse-dense mode
  C. sparse mode
  D. bidirectional mode
  C. sparse mode

• Question 462:

  Refer to the exhibit.

  

  Why is the loopback 0 interface of R4 missing in the routing table of R2?

  A. R2 is configured as a route reflector client.
  B. There is no peering between R2 and R3.
  C. The next hop is not reachable from R2.
  D. The route originated within the same AS.
  B. There is no peering between R2 and R3.

  ---

  In the "show ip bgp" output we see that there is no peering session between R2 and R3. Since R3 is the route reflector here, R3 would reflect routes advertised from R4 to R2, but the peer needs to be established first.

• Question 463:

  What is the range of addresses that is used for IPv4-mapped IPv6 addresses?

  A. 2001. db9. . /32
  B. 2001. db8. . /32
  C. 2002. . /16
  D. . . ffff. /16
  E. . . ffff. 0. 0/96
  E. . . ffff. 0. 0/96

  ---

  IPv4-Mapped Addresses

  FFFF:0:0/96 are the IPv4-mapped addresses [RFC4291]. Addresses within this block should not appear on the public Internet.

  Reference: https://tools.ietf.org/html/rfc5156

• Question 464:

  Which two pieces of information does RTCP use to inform endpoint devices about the RTP flow? (Choose two.)

  A. the transmitted octet
  B. the lost packet count
  C. session control function provisioning information
  D. the CNAME for session participants
  E. the authentication method
  F. MTU size changes in the path of the flow
  A. the transmitted octet
  B. the lost packet count

  ---

  RTCP transports statistics for a media connection and information such as transmitted octet and packet counts, packet loss, packet delay variation, and round-trip delay time. An application may use this information to control quality of service parameters, perhaps by limiting flow, or using a different codec.

  Reference: http://en.wikipedia.org/wiki/RTP_Control_Protocol

• Question 465:

  Which two options are disadvantages of a commingled dual-tier WAN rate-based Ethernet circuit? (Choose two.)

  A. It requires the maintenance of separate chassis.
  B. It has limited scalability.
  C. It requires additional CPU resources at the subscriber end.
  D. It is more difficult to secure.
  E. It can increase the likelihood of packet drops.
  A. It requires the maintenance of separate chassis.
  E. It can increase the likelihood of packet drops.

• Question 466:

  Which Cisco IOS XE process administers routing and forwarding?

  A. Forwarding manager
  B. Interface manager
  C. Cisco IOS
  D. Host manager
  C. Cisco IOS

  ---

  Some of the processes are listed in the table below:

  Process Purpose Affected FRUs

  SubPackage Mapping

  Host Manager

  Provides an interface between the IOS process and many of the information-gathering functions of the underlying platform kernel and operating system.

  RP (one instance per RP)

  SIP (one instance per SIP)

  ESP (one instance per ESP)

  RPControl

  SIPBase

  ESPBase

  Interface Manager

  Provides an interface between the IOS process and the per-SPA interface processes on the SIP.

  RP (one instance per RP)

  SIP (one instance per SIP)

  RPControl

  SIPBase

  IOS

  The IOS process implements all forwarding and routing features for the router. RP (one per software redundancy instance per RP). Maximum of two instances per RP.

  RPIOS

  Forwarding Manager

  Manages the downloading of configuration to each of the ESPs and the communication of forwarding plane information, such as statistics, to the IOS process. RP (one per software redundancy instance per RP). Maximum of two instances

  per RP.

  ESP (one per ESP)

  RPControl

  ESPBase

  Reference:

  http://www.cisco.com/c/en/us/td/docs/routers/asr1000/configuration/guide/chassis/asrswcfg /Software_Packaging_Architecture.html

• Question 467:

  Which two statements about IP SLA are true? (Choose two)

  A. SNMP access is not supported
  B. It uses active traffic monitoring
  C. It is Layer 2 transport-independent
  D. The IP SLA responder is a component in the source Cisco device
  E. It can measure MOS
  F. It uses NetFlow for passive traffic monitoring
  B. It uses active traffic monitoring
  C. It is Layer 2 transport-independent

• Question 468:

  DRAG DROP

  Drag each MPLS term on the left to the matching statement on the right.

  Select and Place:

  

  

• Question 469:

  DRAG DROP

  Drag and drop the NHRP flag on the left to the corresponding meaning on the right.

  Select and Place:

  

  

• Question 470:

  Refer to the exhibit.

  

  Which statement is true about why the first-hop PIM IPv6 router is stuck in registering?

  A. The scope of the IPv6 multicast address is link-local.
  B. The outgoing interface for the IPv6 multicast group should not be a tunnel interface.
  C. The R-bit is set in the IPv6 address, but this is not an embedded RP multicast IPv6 address.
  D. The S flag should not be set on a first-hop PIM router.
  E. A multicast IPv6 address does not start with FF.
  C. The R-bit is set in the IPv6 address, but this is not an embedded RP multicast IPv6 address.

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  bit: RP bit: R = 1 indicates the address embeds the address of the Rendezvous Point (RP). The embedded RP address needs to begin with the prefix FF70::/12, But here we see that the address is FF7E::1234.