Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 781:

  DRAG DROP

  Drag and drop each PHB on the left to the functionality it performs on the right.

  Select and Place:

  

  

• Question 782:

  Which two options about PIM-DM are true? (Choose two.)

  A. PIM-DM initally floods multicast traffic throughout the network.
  B. In a PIM-DM network, routers that have no upstream neighbors prune back unwanted traffic.
  C. PIM-DM supports only shared trees.
  D. PIM-DM uses a pull model to deliver multicast traffic.
  E. PIM-DM cannot be used to build a shared distribution tree.
  A. PIM-DM initally floods multicast traffic throughout the network.
  E. PIM-DM cannot be used to build a shared distribution tree.

• Question 783:

  Which two statements about the assert process in LAN-based PIM are true? (Choose two.)

  A. If the metrics are the same, the router with the lowest advertised routing protocol metric for that route is elected.
  B. If the metrics are the same, the router with the highest IP address on the LAN is elected.
  C. If the metrics are the same, the router with the highest advertised routing protocol metric for that route is elected.
  D. If the metrics are the same, the router with the lowest IP address on the LAN is elected.
  A. If the metrics are the same, the router with the lowest advertised routing protocol metric for that route is elected.
  B. If the metrics are the same, the router with the highest IP address on the LAN is elected.

• Question 784:

  Which two statements about BGP best-path selection are true? (Choose two.)

  A. The route with the highest local preference is preferred.
  B. The weight attribute is advertised to peers.
  C. The route with the lowest MED is preferred.
  D. A route that originates from iBGP peers is preferred.
  E. A route that originates from a router with a higher BGP router ID is preferred.
  F. The lowest weight advertised is preferred.
  A. The route with the highest local preference is preferred.
  C. The route with the lowest MED is preferred.

• Question 785:

  Refer to the exhibit.

  

  Which statement is true?

  A. The output shows an IPv6 multicast address with link-local scope.
  B. The output shows an IPv6 multicast address that is used for unique local sources only.
  C. The output shows an IPv6 multicast address that can be used for BIDIR-PIM only.
  D. The output shows an IPv6 multicast address with embedded RP.
  D. The output shows an IPv6 multicast address with embedded RP.

• Question 786:

  Which three fields are present in the IPv6 header? (Choose three)

  A. Next Header
  B. Traffic Class
  C. Options
  D. Time to Live
  E. Flags
  F. Flow Label
  A. Next Header
  B. Traffic Class
  F. Flow Label

• Question 787:

  Refer to the exhibit.

  

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

  A. This switch is currently receiving a multicast data stream that is being forwarded out VLAN 150.
  B. A multicast receiver has requested to join one or more of the multicast groups.
  C. Group 224.0.1.40 is a reserved address, and it should not be used for multicast user data transfer.
  D. One or more multicast groups are operating in PIM dense mode.
  E. One or more of the multicast data streams will be forwarded out to neighbor 10.85.20.20.
  F. Group 239.192.1.1 is a reserved address, and it should not be used for multicast user data transfer.
  A. This switch is currently receiving a multicast data stream that is being forwarded out VLAN 150.
  B. A multicast receiver has requested to join one or more of the multicast groups.
  C. Group 224.0.1.40 is a reserved address, and it should not be used for multicast user data transfer.

  ---

  A. VLAN 150 shows up in the outgoing interface list so those specific multicast streams are being forwarded to this VLAN. B. A receiver has requested to receive the multicast stream associated with the multicast address of 239.192.1.1, that is why this stream appears in the mroute table. C. The 224.0.1.40 is a reserved multicast group for cisco's Rp descovery. All cisco routers are members of this grup by default and listen to this group for Cisco RP discovery messages advertised by mapping agent even if it is not configured

• Question 788:

  Which two statements are true about OTV? (Choose two.)

  A. It relies on flooding to propagate MAC address reachability information.
  B. It uses a full mesh of point-to-multipoint tunnels to prevent head-end replication of multicast traffic.
  C. It can work over any transport that can forward IP packets.
  D. It supports automatic detection of multihoming.
  C. It can work over any transport that can forward IP packets.
  D. It supports automatic detection of multihoming.

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  The overlay nature of OTV allows it to work over any transport as long as this transport can forward IP packets. Any optimizations performed for IP in the transport will benefit the OTV encapsulated traffic. As part of the OTV control protocol, automatic detection of multihoming is included. This feature enables the multihoming of sites without requiring additional configuration or protocols

  Reference: http://www.cisco.com/c/en/us/products/collateral/switches/nexus-7000-series- switches/white_paper_c11-574984.html

• Question 789:

  Which three statements about GET VPN are true? (Choose three.)

  A. It encrypts WAN traffic to increase data security and provide transport authentication.
  B. It provides direct communication between sites, which reduces latency and jitter.
  C. It can secure IP multicast, unicast, and broadcast group traffic.
  D. It uses a centralized key server for membership control.
  E. It enables the router to configure tunnels.
  F. It maintains full-mesh connectivity for IP networks.
  A. It encrypts WAN traffic to increase data security and provide transport authentication.
  B. It provides direct communication between sites, which reduces latency and jitter.
  D. It uses a centralized key server for membership control.

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  Cisco GET VPN Features and Benefits

  Feature Description and Benefit Key Services Key Servers are responsible for ensuring that keys are granted to authenticated and authorized devices only. They maintain the freshness of the key material, pushing re-key messages as well as security policies on a regular basis. The chief characteristics include: ?Key Servers can be located centrally, granting easy control over membership. ?Key Servers are not in the";line of fir"; - encrypted application traffic flows directly between VPN end points without a bottleneck or an additional point of failure. ? Supports both local and global policies, applicable to all members in a group - such as "Permit any any", a policy to encrypt all traffic. ?Supports IP Multicast to distribute and manage keys, for improved efficiency; Unicast is also supported where IP Multicast is not possible. Scalability and Throughput

  ?The full mesh nature of the solution allows devices to communicate directly with each other, without requiring transport through a central hub; this minimizes extra encrypts and decrypts at the hub router; it also helps minimize latency and jitter. ?Efficient handling of IP Multicast traffic by using the core network for replication can boost effective throughput further Security Provides data security and transport authentication, helping to meet security compliance and internal regulation by encrypting all WAN traffic

  Reference: http://www.cisco.com/c/en/us/products/collateral/security/group-encrypted- transport-vpn/product_data_sheet0900aecd80582067.html

• Question 790:

  In which way does the Bridge Assurance mechanism modify the default spanning-tree behavior in an effort to prevent bridging loops?

  A. Received BPDUs are looped back toward the sender to ensure that the link is bidirectional.
  B. If BPDUs are no longer received on a port, the switch immediately sends out a TCN BPDU.
  C. Extended topology information is encoded into all BPDUs.
  D. BPDUs are sent bidirectional on all active network ports, including blocked and alternate ports.
  D. BPDUs are sent bidirectional on all active network ports, including blocked and alternate ports.