Nokia Nokia Certifications 4A0-C04 Questions & Answers

• Question 201:

  In an OSPF environment, what must a router receive after it sends out an update?

  A. The router must receive an acknowledgment

  B. The router must receive a Hello

  C. The router must receive a new sequence number

  D. The router must receive a Link State Packet

  Correct Answer: A

• Question 202:

  There is an IP host with IP address 10.2.3.1. A static route is created, using the "configure router static-route 10.2.3.0/24 next-hop 10.1.2.1" command. What is the correct traceroute command to test this static route on an Nokia 7750 SR?

  A. traceroute 10.2.3.1

  B. traceroute 10.2.3.1 next-hop 10.1.2.1

  C. traceroute next-hop 10.1.2.1

  D. traceroute does not work on the Nokia 7750 SR.

  E. traceroute 10.1.2.1

  Correct Answer: A

• Question 203:

  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.

  Correct Answer: B

• Question 204:

  What is the purpose of a T-LDP session?

  A. It allows link LDP to be configured on the edge devices only.

  B. It is used to signal the transport labels in the provider core.

  C. It allows selective control over which devices are configured for LDP.

  D. It is used to signal the service labels in the provider core.

  Correct Answer: D

• Question 205:

  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.

  Correct Answer: B

• Question 206:

  Which of the following regarding the location of an MPLS label is FALSE?

  A. The MPLS label value may be carried in an ATM header.

  B. The MPLS label value may be carried in a shim header.

  C. The MPLS label value may be carried in an OSPF header.

  D. The MPLS label value may be carried in a Frame Relay header.

  Correct Answer: C

• Question 207:

  Click on the exhibit.

  

  Two LSPs traverse the path R1-R2-R3. Both LSPs are configured with facility fast reroute and link protection. When router R1 is the PLR, which router becomes the Merge Point (MP) for this LSP?

  A. Router R1

  B. Router R2

  C. Router R3

  D. Router R4

  E. Router R5

  Correct Answer: B

• Question 208:

  Click on the exhibit.

  

  When router R1 forwards a PATH message to router R2, which of the following about the PATH message's IP header is TRUE?

  A. The options field is set to router alert.

  B. The source address is R1's egress interface address.

  C. The destination address is R2's ingress interface address.

  D. The HOP object includes R2's system address.

  Correct Answer: A

• Question 209:

  An autonomous system has 7 routers configured with BGP. How many iBGP sessions are required for a fully meshed configuration?

  A. 7

  B. 13

  C. 21 D. 42

  Correct Answer: C

• Question 210:

  What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas?

  A. Type 1

  B. Type 3

  C. Type 4

  D. Type 7

  Correct Answer: B