Cisco 351-001 Online Practice Questions and Exam Preparation

Cisco 351-001 Online Questions & Answers

• Question 401:

  What are the three variants of NTPv4? (Choose three.)

  A. client/server
  B. broadcast
  C. symmetric
  D. multicast
  E. asymmetric
  F. unicast
  A. client/server
  B. broadcast
  C. symmetric

• Question 402:

  Which three features are common to OSPF and IS-IS? (Choose three.)

  A. They both maintain a link-state database from which a Dijkstra-based SPF algorithm computes a shortest path tree.
  B. They both use DR and BDR in the broadcast network.
  C. They both use hello packets to form and maintain adjacencies.
  D. They both use NSSA and stub type areas to scale the network design.
  E. They both have areas to form a two-level hierarchical topology.
  A. They both maintain a link-state database from which a Dijkstra-based SPF algorithm computes a shortest path tree.
  C. They both use hello packets to form and maintain adjacencies.
  E. They both have areas to form a two-level hierarchical topology.

• Question 403:

  An engineer has configured a router to use EUI-64, and was asked to document the IPv6 address of the router. The router has the following interface parameters:

  mac address C601.420F.0007

  subnet 2001:DB8:0:1::/64

  A. 2001:DB8:0:1:C601:42FF:FE0F:7
  B. 2001:DB8:0:1:FFFF:C601:420F:7
  C. 2001:DB8:0:1:FE80:C601:420F:7
  D. 2001:DB8:0:1:C601:42FE:800F:7
  A. 2001:DB8:0:1:C601:42FF:FE0F:7

• Question 404:

  Which statement best describes IPv6 RA Guard?

  A. It redirects authorized device hello messages.
  B. It filters authorized IPv6 device advertisements on a link.
  C. It blocks unexpected IPv6 router announcements on a link.
  D. It validates ingress hello messages on a port.
  C. It blocks unexpected IPv6 router announcements on a link.

• Question 405:

  Which set of commands conditionally advertises 172.16.0.0/24 as long as 10.10.10.10/32 is in the routing table?

  E. Option A
  F. Option B
  G. Option C
  H. Option D
  B

  ---

  Advertise maps are used for conditional routing to advertise specified prefixes if something which is specified in exist map exists. In our question we need to advertise 172.16.0.0/24 if 10.10.10.10/32 exists in the routing table so we have to

  use commanD. "neighbor x.x.x.x advertise-map exist-map ".

  Therefore B is correct.

• Question 406:

  Refer to the exhibit.

  

  Which statement is true?

  A. IS-IS has been enabled on R4 for IPv6, single-topology.
  B. IS-IS has been enabled on R4 for IPv6, multitopology.
  C. IS-IS has been enabled on R4 for IPv6, single-topology and multitopology.
  D. R4 advertises IPv6 prefixes, but it does not forward IPv6 traffic, because the protocol has not been enabled under router IS-IS.
  A. IS-IS has been enabled on R4 for IPv6, single-topology.

  ---

  When working with IPv6 prefixes in IS-IS, you can configure IS-IS to be in a single topology for both IPv4 and IPv6 or to run different topologies for IPv4 and IPv6. By default, IS-IS works in single-topology mode when activating IPv4 and IPv6.

  This means that the IS-IS topology will be built based on IS Reachability TLVs. When the base topology is built, then IPv4 prefixes (IP Reachability TLV) and IPv6 prefixes (IPv6 Reachability TLV) are added to each node as leaves, without

  checking if there is IPv6 connectivity between nodes.

  Reference: https://blog.initialdraft.com/archives/3381/

• Question 407:

  Which three statements are true about VSS? (Choose three.)

  A. VSS separates the control planes of the active and the standby chassis.
  B. Configuration changes can be made on both active and standby chassis.
  C. When the VSS active chassis recovers after a failure, it initiates a switchover and takes on the active role again.
  D. VSS unifies the control planes of the active and the standby chassis.
  E. HSRP configuration is not required to run VSS.
  F. The VSS standby chassis monitors the VSS active chassis using the VSL.
  D. VSS unifies the control planes of the active and the standby chassis.
  E. HSRP configuration is not required to run VSS.
  F. The VSS standby chassis monitors the VSS active chassis using the VSL.

  ---

  VSS operates on a unified control plane with a distributed forwarding architecture in which the active supervisor (or switch) is responsible for actively participating with the rest of the network and for managing and maintaining control plane information. VSS actually removes the need for a next-hop redundancy protocol like HSRP or VRRP. These first-hop redundancy protocols are usually heavily tied to a fast-converging routing protocol like EIGRP, and still require that each device maintain its own control plane. The standby chassis monitors the active chassis using the VSL. If it detects failure, the standby chassis initiates a switchover and takes on the active role. When the failed chassis recovers, it takes on the standby role. Reference: http://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst6500/ios/15- 1SY/config_guide/sup2T/15_1_sy_swcg_2T/virtual_switching_systems.pdf

• Question 408:

  You are configuring a DHCPv6 client for a DHCPv6 server with the prefix delegation feature. Which option is a result of the interface configuration when you enter the command ipv6 address autoconfig default?

  A. a static IPv6 default route pointing to the upstream DHCP server
  B. a static IPv6 default route pointing to the upstream DHCP relay
  C. a static IPv6 default route pointing to the upstream router
  D. a temporary stateless address, formed from the EUI-64 bit address and the prefix from the route advertisement of the upstream router
  A. a static IPv6 default route pointing to the upstream DHCP server

• Question 409:

  Refer to the exhibit.

  

  This network is configured with PIM, and the RPF check has failed toward the multicast source. Which two configuration changes must you make to router R3 to enable the RPF check to pass? (Choose two.)

  A. Configure a static multicast route to the multicast source through the tunnel interface.
  B. Configure a static multicast route to the multicast source LAN through the tunnel interface.
  C. Configure a static multicast route to the multicast source LAN through the Ethernet interface.
  D. Remove the command ip prim bidir-enable from the R3 configuration.
  A. Configure a static multicast route to the multicast source through the tunnel interface.
  B. Configure a static multicast route to the multicast source LAN through the tunnel interface.

• Question 410:

  Which two statements about TCP MSS are true?

  A. it sets the minimum amount of data that a host accepts in an individual datagram.
  B. The two endpoints in a TCP connection report their MSS values to one another.
  C. it operates at Layer 3.
  D. MSS values are sent in TCP SYN packets.
  E. it sets the maximum amount of data that a hos sends in an individual datagram.
  B. The two endpoints in a TCP connection report their MSS values to one another.
  E. it sets the maximum amount of data that a hos sends in an individual datagram.