Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 851:

  Which three options must be configured when deploying OSPFv3 for authentication? (Choose three.)

  A. security parameter index
  B. crypto map
  C. authentication method
  D. IPsec peer
  E. encryption algorithm
  F. encryption key
  G. IPsec transform-set
  H. authentication key
  A. security parameter index
  C. authentication method
  H. authentication key

• Question 852:

  Which two statements about IOS and IOS XE are true? (Choose two.)

  A. IOS XE can upgrade and restart applications independently of IOS.
  B. Only IOS uses the FFM to provide separation between the control plane and the data plane.
  C. IOS XE provides improved functionality and an enhanced UI.
  D. Only IOS runs as a single daemon within the Linux OS.
  E. IOS XE provides additional system functions that run as multiple separate processes in the OS.
  A. IOS XE can upgrade and restart applications independently of IOS.
  E. IOS XE provides additional system functions that run as multiple separate processes in the OS.

• Question 853:

  Which ICMP message type is used to assist path MTU discovery?

  A. destination unreachable
  B. redirect message
  C. source quench
  D. time exceeded
  A. destination unreachable

• Question 854:

  Which two statements about VTPv3 are true? (Choose two)

  A. Extended VLANs prevent VTPv3 switches from becoming VTPv2
  B. VTPv3 must receive VTPv2 packets before it can send VTPv2 packets
  C. VTPv3 accepts configuration information only from VTPv2 devices
  D. VTPv3 sends VTPv2 packets when they are detected on a trunk port
  E. VTPv3 regions can communicate in server mode only over a VTPv2 region
  A. Extended VLANs prevent VTPv3 switches from becoming VTPv2
  B. VTPv3 must receive VTPv2 packets before it can send VTPv2 packets

• Question 855:

  Which two statements are true about unicast RPF? (Choose two.)

  A. Unicast RPF requires CEF to be enabled.
  B. Unicast RPF strict mode works better with multihomed networks.
  C. Unicast RPF strict mode supports symmetric paths.
  D. Unicast RPF strict mode supports asymmetric paths.
  E. CEF is optional with Unicast RPF, but when CEF is enabled it provides better performance.
  A. Unicast RPF requires CEF to be enabled.
  C. Unicast RPF strict mode supports symmetric paths.

  ---

  Unicast RPF requires Cisco express forwarding (CEF) to function properly on the router.

  Strict Versus Loose Checking Mode

  The Unicast RPF in Strict Mode feature filters ingress IPv4 traffic in strict checking mode and forwards packets only if the following conditions are satisfied.

  ?

  An IPv4 packet must be received at an interface with the best return path (route) to the packet source (a process called symmetric routing). There must be a route in the Forwarding Information Base (FIB) that matches the route to the

  receiving interface. Adding

  ?

  IPv4 source addresses at the receiving interface must match the routing entry for the interface.

  References:

  http://www.cisco.com/c/en/us/td/docs/ios/12_2/security/configuration/guide/fsecur_c/scfrpf.

  html

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

• Question 856:

  Which two statements about PBR route maps are true? (Choose two.)

  A. They can use extended ACLs to identify traffic.
  B. They can route unicast traffic without interface-level classification.
  C. They can be applied to both ingress and egress traffic.
  D. They can classify traffic based on prefix-lists.
  E. They can set the metric and IP precedence bits.
  A. They can use extended ACLs to identify traffic.
  B. They can route unicast traffic without interface-level classification.

• Question 857:

  DRAG DROP

  Drag and drop the RIP configuration command on the left to the function it performs on the right.

  Select and Place:

  

  

• Question 858:

  Refer to the exhibit.

  

  Which statement is true about a valid IPv6 address that can be configured on tunnel interface0?

  A. There is not enough information to calculate the IPv6 address.
  B. 6to4 tunneling allows you to use any IPv6 address.
  C. 2001:7DCB:5901::/128 is a valid IPv6 address.
  D. 2002:7DCB:5901::/128 is a valid IPv6 address.
  D. 2002:7DCB:5901::/128 is a valid IPv6 address.

  ---

  Most IPv6 networks use autoconfiguration, which requires the last 64 bits for the host. The first 64 bits are the IPv6 prefix. The first 16 bits of the prefix are always 2002:, the next 32 bits are the IPv4 address, and the last 16 bits of the prefix are available for addressing multiple IPv6 subnets behind the same 6to4 router. Since the IPv6 hosts using autoconfiguration already have determined the unique 64 bit host portion of their address, they must simply wait for a Router Advertisement indicating the first 64 bits of prefix to have a complete IPv6 address. A 6to4 router will know to send an encapsulated packet directly over IPv4 if the first 16 bits are 2002, using the next 32 as the destination, or otherwise send the packet to a well-known relay server, which has access to native IPv6.

  Reference: http://en.wikipedia.org/wiki/6to4

• Question 859:

  When the BGP additional-paths feature is used, what allows a BGP speaker to differentiate between the different available paths?

  A. The remote BGP peer prepends its own next-hop address to the prefix.
  B. A unique path identifier is encoded into a dedicated field to the NLRI.
  C. A route distinguisher is appended to the prefix by the receiving BGP speaker.
  D. The additional path information is encoded in an extended community.
  B. A unique path identifier is encoded into a dedicated field to the NLRI.

• Question 860:

  Which three types of traffic are protected when you implement IPsec within an IPv6-in-IPv4 tunnel? (Choose three.)

  A. IPv6 link-local traffic
  B. IPv6 multicast traffic
  C. IPv6 unicast traffic
  D. IPv4 tunnel control traffic
  E. IPv4 broadcast traffic
  F. IPv6 broadcast traffic
  A. IPv6 link-local traffic
  B. IPv6 multicast traffic
  C. IPv6 unicast traffic