Cisco 400-201 Online Practice Questions and Exam Preparation

Cisco 400-201 Online Questions & Answers

• Question 771:

  

  Refer to the exhibit. P1 and P3 cannot establish an LDP session between them. Which reason for this issue is true?

  A. Mismatched LDP discovery hold timers are between P1 and P3.
  B. P1 is not configured to send LDP discovery packets to P3.
  C. P3 cannot discover P1 because P3 has a route to each P1.
  D. The LDP transport source address used on P3 is incorrectly configured.
  D. The LDP transport source address used on P3 is incorrectly configured.

• Question 772:

  On the BGP Best Path Selection, when two external paths from different EBGP neighbors are received, the oldest path received can be the tie break to select the best path. Which Cisco IOS command ignores this decision criteria and checks the next decision criteria?

  A. bgp best path med missing-as-worst
  B. bgp best path compare-routerid
  C. bgp best path cost-community ignore
  D. bgp best path as-path ignore
  B. bgp best path compare-routerid

• Question 773:

  An engineer is troubleshooting L3VPN traffic loss over the MPLS-enabled core network when new core links were enable. Assuming that the IGP is properly configured, which issue causes a temporary data flow blackholing when the IGP and LDP reconverges?

  A. MPLS-TE tunnels without LDP adjacencies are used over the new links black-holing the traffic before the LDP label exchange is completed
  B. MP-BGP sessions between PE and RR routers require extra time to reconverge than the underlying IGP
  C. IP packets are forwarded as soon as routes are learned over a new IGP adjancey before the label exchange happens over the new links
  D. LDP is a Layer 2 protocol forwarding Label packets before the IGP reconverged
  C. IP packets are forwarded as soon as routes are learned over a new IGP adjancey before the label exchange happens over the new links

• Question 774:

  A service provider network is currently divided into five IGP domains; four IS-IS domains and one OSPFv2 domain. Because of customer demand, it has been decided to implement Cisco MPLS TE tunnels using a centralized offline path calculation system. Which method provides a way to distribute the required information to the path calculation system?

  A. Convert the OSPFv2 domain to a new IS-IS instance.
  B. Use RSVP-TE IS-IS/OSPFv2 extensions to distribute the information.
  C. Use BGP LS to distribute information across the domains.
  D. Perform mutual redistribution between all IGP domains.
  C. Use BGP LS to distribute information across the domains.

• Question 775:

  R1#show ip cache flow.

  

  A network administrator issues the command "show ip cache flow" and finds the shown output. What can be concluded? (Choose two.)

  A. It is normal traffic.
  B. There is a potential sacrificed host located at network 192.1.6.0 generating attacks.
  C. There is a potential DOS attack on device of 194.10.6.2.
  D. It is multicast traffic source from 194.10.6.2
  E. It is multicast traffic destined for 194.10.6.2
  B. There is a potential sacrificed host located at network 192.1.6.0 generating attacks.
  C. There is a potential DOS attack on device of 194.10.6.2.

• Question 776:

  A network operation engineer has these requirement:

  *prevent multicast transit when it is enforced by unicast stub routing.

  *Reduce the overall processing of PIM control traffic. Especially when the number of stub links increases on the stub device.

  *protect against multicast spoofing of PM designated router messages and PIM assert messages.

  Which solution meets these requirements?

  A. explicit tracking of receivers.
  B. multicast stub routing.
  C. Source Specific Multicast.
  D. PIM allow RP.
  B. multicast stub routing.

• Question 777:

  In the MC-LAG environment, which two statements about clustering HA are true?

  A. Public connection is used to access the active node of cluster from the outside cluster
  B. Private connection is used to connect the nodes of the cluster for private communication
  C. Private connection is used to access the active node of cluster from the outside cluster
  D. Public connection is used to connect the nodes of cluster for private communication
  E. Public connection is used to monitor the health and status of each node in the HA cluster using the heartbeat system
  A. Public connection is used to access the active node of cluster from the outside cluster
  B. Private connection is used to connect the nodes of the cluster for private communication

• Question 778:

  A VPLS network consists of provider edge routers that have fully meshed pseudowires, the network runs unicast and multicast traffic, the network recently experienced bandwidth and CPU-related performance issue While monitoring the VPLS and interface statistics an operations engineer notice that the network is experiencing an unusual amount of broadcast and undesired multicast traffic. Which two technique can address these issue?(choose two)

  A. Change the network to run VPWS to mange the broadcast traffic efficiently
  B. Implement MAC withdrawal on each EFP in the VPLS bridge domain
  C. Set a limit on MAC learning in the pseudowire in the VPLS network
  D. Implement Storm Control in the VPLS bridge domain
  E. Implement IGMP snooping in the VPLS network
  D. Implement Storm Control in the VPLS bridge domain
  E. Implement IGMP snooping in the VPLS network

• Question 779:

  Which option describes a benefits of IPv6 VPN Provider Edge?

  A. Provider support for intra-AS and CSC scenarios
  B. Uses separate signaling plane, which provides more security than IPv4
  C. BGP is the preferred routing protocol for connecting two SPs.
  D. No requirement for a separate signaling plane
  D. No requirement for a separate signaling plane

• Question 780:

  Which statement about VPLS is true?

  A. All CE devices emulate a bridge
  B. All provider devices emulate a bridge
  C. Hierarchical VPLS reduces signaling overhead
  D. Each PE device emulates a bridge
  E. Each CE device emulates a bridge
  C. Hierarchical VPLS reduces signaling overhead