Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 21:

  Drag each statement about IPv6 tunneling on the left to the matching IPv6 tunneling on the right.

  Select and Place:

  

  

• Question 22:

  Refer to the exhibit.

  

  Which two commands are required on R3 in order for MPLS to function? (Choose two.)

  A. mpls ip
  B. ip cef
  C. mpls label protocol tdp
  D. mpls ip propagate-ttl
  A. mpls ip
  B. ip cef

• Question 23:

  Which statement about the BGP scope of the cost community is true?

  A. It is shared with IBGP neighbors only.
  B. It is shared with IBGP neighbors and route reflectors.
  C. It is shared with EBGP neighbors only.
  D. It is shared with IBGP and EBGP neighbors.
  E. It is shared with IBGP and confederation peers.
  E. It is shared with IBGP and confederation peers.

  ---

  The BGP Cost Community feature introduces the cost extended community attribute. The cost community is a non-transitive extended community attribute that is passed to internal BGP (iBGP) and confederation peers but not to external BGP (eBGP) peers. The cost community feature allows you to customize the local route preference and influence the best path selection process by assigning cost values to specific routes.

  Reference: http://www.cisco.com/c/en/us/td/docs/ios/12_0s/feature/guide/s_bgpcc.html

• Question 24:

  Refer to the exhibit.

  

  Which statement about this IP SLA is true?

  A. The SLA must also have a schedule configured before it will start.
  B. The TTL of the SLA packets is 10.
  C. The SLA has a timeout of 3.6 seconds.
  D. The SLA has a lifetime of 5 seconds.
  A. The SLA must also have a schedule configured before it will start.

  ---

  When you configure an IP SLAs operation, you must schedule the operation to begin capturing statistics and collecting error information. You can schedule an operation to start immediately or to start at a certain month, day, and hour. You can use the pending option to set the operation to start at a later time. The pending option is an internal state of the operation that is visible through SNMP. The pending state is also used when an operation is a reaction (threshold) operation waiting to be triggered. You can schedule a single IP SLAs operation or a group of operations at one time. We can see in this output that the IP SLA is still in a pending trigger state.

  Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4500/12- 2/44sg/configuration/guide/Wrapper-44SG/swipsla.html

• Question 25:

  Refer to the exhibit.

  

  Which three statements about the output are true? (Choose three.)

  A. An mrouter port can be learned by receiving a PIM hello packet from a multicast router.
  B. This switch is configured as a multicast router.
  C. Gi2/0/1 is a trunk link that connects to a multicast router.
  D. An mrouter port is learned when a multicast data stream is received on that port from a multicast router.
  E. This switch is not configured as a multicast router. It is configured only for IGMP snooping.
  F. IGMP reports are received only on Gi2/0/1 and are never transmitted out Gi2/0/1 for VLANs 10 and 20.
  A. An mrouter port can be learned by receiving a PIM hello packet from a multicast router.
  B. This switch is configured as a multicast router.
  C. Gi2/0/1 is a trunk link that connects to a multicast router.

  ---

  In this example, the switch has been configured as a multicast router since IGMP snooping has been enabled. All mrouters can learn about other mrouters by receiving a PIM hello packet from another multicast router. Also, since two different VLANs are being used by the same port of gi 2/0/1, it must be a trunk link that connects to another multicast router.

• Question 26:

  Which address is a MAC address that is mapped from an IPv6 address (RFC 2464)?

  A. 3333.FF17.FC0F
  B. FFFE. FF17.FC0F
  C. FF34.3333.FF17
  D. FF7E.FF17.FC0F
  A. 3333.FF17.FC0F

  ---

  An IPv6 packet with a multicast destination address DST, consisting of the sixteen octets DST through DST, is transmitted to the Ethernet multicast address whose first two octets are the value 3333 hexadecimal and whose last four octets are the last four octets of DST.

  Reference: https://tools.ietf.org/html/rfc2464

• Question 27:

  The session status for an IPsec tunnel with IPv6-in-IPv4 is down with the error message IKE message from 10.10.1.1 failed its sanity check or is malformed.

  Which statement describes a possible cause of this error?

  A. There is a verification failure on the IPsec packet.
  B. The SA has expired or has been cleared.
  C. The pre-shared keys on the peers are mismatched.
  D. There is a failure due to a transform set mismatch.
  E. An incorrect packet was sent by an IPsec peer.
  C. The pre-shared keys on the peers are mismatched.

  ---

  IKE Message from X.X.X.X Failed its Sanity Check or is Malformed This debug error appears if the pre-shared keys on the peers do not match. In order to fix this issue, check the pre-shared keys on both sides. 1d00H:%CRPTO-4IKMP_BAD_MESSAGE. IKE message from 150.150.150.1 failed its sanity check or is malformed.

  Reference: http://www.cisco.com/c/en/us/support/docs/security-vpn/ipsec-negotiation-ike- protocols/5409-ipsec-debug-00.html#ike

• Question 28:

  Which two protocols are not protected in an edge router by using control plane policing? (Choose two.)

  A. SMTP
  B. RPC
  C. SSH
  D. Telnet
  A. SMTP
  B. RPC

  ---

  A CoPP policy can limit a number of different packet types that are forwarded to the control plane. Traffic destined for the switch CPU includes: ?Address Resolution Protocol (ARP) ?First-hop redundancy protocol packets ?Layer 2 control packets ?Management packets (telnet, Secure Shell [SSH] Protocol, Simple Network Management Protocol [SNMP]) <--- C and D are not correct. ?Multicast control packets ?Routing protocol packets ?Packets with IP options ?Packets with time to live (TTL) set to 1 ?Packets that require ACL logging ?Packets that require an initial lookup (first packet in a flow: FIB miss) ?Packets that have don't support hardware switching/routing

  Reference: http://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series- switches/white_paper_c11_553261.html

• Question 29:

  Which algorithm heavily influenced the algorithm used by path-vector protocols?

  A. Bellman-Ford
  B. SPF
  C. DUAL
  D. Spanning-Tree
  E. Adaptive
  F. Deflection
  A. Bellman-Ford

  ---

  A path vector protocol is a computer network routing protocol which maintains the path information that gets updated dynamically. Updates which have looped through the network and returned to the same node are easily detected and discarded. This algorithm is sometimes used in Bellmanord routing algorithms to avoid "Count to Infinity" problems.

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

• Question 30:

  DRAG DROP

  Drag and drop the extended ping command field on the left to its usage on the right.

  Select and Place: