Nokia 4A0-C04 Online Practice Questions and Exam Preparation

Nokia 4A0-C04 Online Questions & Answers

• Question 231:

  Which of the following about route distinguishes on the Nokia 7750 SR is TRUE?

  A. Route distinguishes are appended to IPv4 prefixes to form IPv6 prefixes.
  B. CE routers use a route distinguisher to indicate which VPRN they are associated to.
  C. A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.
  D. Route distinguishes are used to determine which routes a VPRN should import.
  C. A route distinguisher combined with an IPv4 prefix produces a VPN-IPv4 prefix.

• Question 232:

  Click the exhibit button.

  

  Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

  A. Full; both routers are exchanging Helios to maintain the adjacency.
  B. The adjacency is down.
  C. The adjacency is in exstart state.
  D. The adjacency is in the exchange state.
  C. The adjacency is in exstart state.

• Question 233:

  Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP policy?

  

  A. "client2" routes will be tagged with communities "West" and "North".
  B. "client2" routes will be tagged with communities "West", "North" and "South".
  C. "client2" routes will be tagged with community "West".
  D. "client2" routes will be tagged with community "South".
  C. "client2" routes will be tagged with community "West".

• Question 234:

  Click the exhibit.

  

  Router R2 receives a route to 192.168.1.0/27 from router R4, and sets the local preference to 110. Router R1 receives a route to 192.168.1.0/27 from router R3, and sets the local preference to 80. Both ASs have a full iBGP mesh. What path does traffic destined to 192.168.1.0/27 take from router R1?

  A. R1-R3-R8
  B. R1-R2-R4-R8
  C. R1-R3-R4-R8
  D. R1-R2-R4-R3-R8
  B. R1-R2-R4-R8

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  Explanation/Reference:

• Question 235:

  Which of the following is TRUE when the explicit null is implemented?

  A. The penultimate router will forward packets to the eLER, based on the IP header.
  B. The eLER will receive packets with a top label value of 0.
  C. The eLER will receive packets with a top label value of 3.
  D. The penultimate router will pop the top label from the packets.
  B. The eLER will receive packets with a top label value of 0.

• Question 236:

  Click the exhibit.

  

  Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into ISP X, which of the following best describes the route advertisement within ISP X?

  A. Router C sends the update to routers E and F only.
  B. Router C sends the update to routers D, E and F.
  C. Router C sends the update to routers A, B, E and F.
  D. Router C sends the update to routers A, B, D, E and F.
  D. Router C sends the update to routers A, B, D, E and F.

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  Explanation/Reference:

• Question 237:

  How is the aggregator attribute handled with 32-bit AS numbers?

  A. With the same method and attribute as 16-bit AS numbers.
  B. With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.
  C. Aggregation is not yet supported with 32-bit AS numbers.
  D. By using a dummy value of 23456 in the 16-bit AS aggregator field. This value lets the router know it needs to read the 32-bit AS number that is contained in the nextTLV.
  B. With the same method as 16-bit AS numbers, but using the AS4_Aggregator attribute.

• Question 238:

  Which of the following statements regarding Internet Exchange Points is FALSE?

  A. They provide both peering and transit services.
  B. They provide services only to Tier 1 service providers.
  C. They can be either public or private.
  D. They provide services at the local, regional and continental levels.
  B. They provide services only to Tier 1 service providers.

• Question 239:

  Click the exhibit.

  

  AS 65100 is advertising 192.168.1.0/27 into BGP. Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R7?

  A. 65206 65202 65100
  B. (65206 65202)65100
  C. (65204 65206 65202) 65100
  D. (65200) 65100
  B. (65206 65202)65100

• Question 240:

  Click on the exhibit.

  

  An LDP tunnel is established on R1-R2-R4-R6 because the link between routers R3 and R6 is down. With the LDP-IGP Sync feature enabled, what happens immediately after the link is restored?

  A. A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.
  B. The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.
  C. A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router R6.
  D. The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.
  D. The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.