Nokia Nokia Certifications 4A0-101 Questions & Answers

• Question 231:

  What is the term used for the updates sent by IS-IS?

  A. Link State PDUs

  B. Link State Updates

  C. Link State Advertisements

  D. Intermediate System Update Packets

  Correct Answer: A

• Question 232:

  What command allows analysis of the Dijkstra calculation on the Alcatel-Lucent 7750 SR?

  A. There is no such calculation in IS-IS

  B. Show router isis database

  C. Show router isis dijykstra

  D. Show router isis spf

  Correct Answer: D

• Question 233:

  What are the types of routers in an IS-IS topology? Choose all that apply.

  A. Level 0

  B. Level 1

  C. Level 2

  D. Level 0/1

  E. Level 1/2

  Correct Answer: BCE

• Question 234:

  What command will show the IS-IS neighbors, and their status on an Alcatel-Lucent 7750 SR?

  A. Show isis neighbors

  B. Show router isis neighbors

  C. Show router isis adjacency

  D. Show isis adjacency

  Correct Answer: C

• Question 235:

  Which of the statements below best describes the pseudonode in an IS-IS network?

  A. The DIS creates a logical node to represent a group of routers on the same non-broadcast network; this node is the pseudonode

  B. The DIS creates a logical node to represent the topological database of the backbone network in an ISIS network; this node is the pseudonode

  C. The DIS creates a logical node to represent a broadcast sub-network; this node is the pseudonode

  D. The DIS creates a logical node to represent the complete topology of an IS-IS area; this node is the pseudode

  Correct Answer: C

• Question 236:

  What are the three databases maintained by a Link State Protocol?

  A. Neighbor, adjacency, route table

  B. Neighbor, topology, forwarding

  C. Topology, routing, forwarding

  D. There are only two databases: adjacency and topology

  Correct Answer: B

• Question 237:

  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 238:

  An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?

  A. The link state information is not populated in the database but is forwarded to all neighbors

  B. The link state information already in the database is overwritten and the age is reset

  C. The link state information is not populated in the database and an acknowledgement is sent

  D. The link state information is regarded as old and nothing is done.

  Correct Answer: C

• Question 239:

  From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

  A. The age for newly created link state information is set to 0 for OSPF and 1200 for IS-IS

  B. The age for newly created link state information is set to 1200 for OSPF and 0 for IS-IS

  C. The age is incremented or decremented as it is flooded from router to router and as it is held in the topological database.

  D. The age is incremented or decremented only as it is held in the topological database and not as it is flooded router to router.

  Correct Answer: AC

• Question 240:

  What must be configured on the Alcatel-Lucent 7750 SR for RIP to advertise locally attached links?

  A. A policy statement within the router identifying what is to be advertised

  B. Access-lists denoting what is to be advertised

  C. Default metrics for each link

  D. A group and neighbor statement for each peer

  Correct Answer: A