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4A0-112 Exam Dumps - Nokia Certification Questions and Answers

Question # 4

A router is trying to establish an IS-IS adjacency with the DIS on a broadcast link. What event causes the adjacency to change from “Initializing” to “UP”?

Options:

A.

Receiving a Hello packet from the DIS that contains the local router’s own MAC address in the neighbor list.

B.

Receiving the first CSNP packet from the DIS that lists the LSPs in the DIS’s link-state database.

C.

Receiving a CSNP packet from the DIS acknowledging the last transmitted LSP.

D.

Receiving the last LSP requested from the DIS.

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Question # 5

What is the replacement for ARP in IPv6?

Options:

A.

Duplicate address detection procedures.

B.

Router discovery procedures.

C.

Neighbor discovery procedures.

D.

Stateless address auto-configuration procedures.

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Question # 6

Which of the following statements best describes the IS-IS domain to which the command output corresponds?

Options:

A.

Single-area IS-IS domain with no broadcast interfaces.

B.

Multi-area IS-IS domain with no broadcast interfaces.

C.

Single-area IS-IS domain with broadcast interfaces.

D.

Multi-area IS-IS domain with broadcast interfaces.

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Question # 7

Which of the following definitions best describes route redistribution?

Options:

A.

It is the process of deciding at line-rate speed which packets will be dropped and which ones will be forwarded.

B.

It is the process of redirecting packets to be processed by an intermediate network function before allowing them to be forwarded to their intended final destination.

C.

It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.

D.

It is the process of controlling which route advertisements received from routing peers are accepted and/or deciding which locally known prefixes are advertised to routing peers.

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Question # 8

A router running a link-state routing protocol detects that one of its neighbors is no longer connected to it. The router generates a new link-state advertisement to inform other routers of the topology change. Which of the following is NOT an action that is triggered by this event?

Options:

A.

If a router receives the new link-state advertisement, it acknowledges it, stores it, and forwards it to its own neighbors.

B.

If a router receives multiple copies of the new link-state advertisement, it will simply ignore all copies received after the first one.

C.

Every router that receives the new link-state advertisement updates its age field before forwarding it.

D.

Every router that receives the new link-state advertisement runs the SPF algorithm to recalculate its shortest-path tree and its forwarding database.

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Question # 9

Which of the following statements about the IP forwarding process on a router is TRUE?

Options:

A.

It uses the routing table to find a match for the source IP address.

B.

It uses the routing table to find a match for the destination IP address.

C.

It uses the ARP table to find a match for the source MAC address.

D.

It uses the ARP table to find a match for the destination MAC address.

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Question # 10

Which of the following statements regarding the databases used by a link-state routing protocol in a single-are routing domain is FALSE?

Options:

A.

The link-state database has the local topology and IP reachability information advertised by all the routers.

B.

The adjacency database contains information about all the links interconnecting the domain’s routers.

C.

The forwarding database contains the optimum next hop for each known prefix.

D.

The link-state database is the same for all routers.

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Question # 11

A routing domain is using a single-area link-state routing protocol. Which of the following is NOT information that a router can share with other routers in the domain using protocol-specific messages?

Options:

A.

The IP prefixes of subnets directly attached to the router.

B.

IP prefixes known by the router because it is running ad additional routing protocol.

C.

A copy of the local routing table.

D.

The local router ID and the router IDs of neighboring routers.

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Question # 12

Consider the exhibit.

All routers are running IS-IS with IPv6 support enabled. Based on the topology shown, and the route tables of routers R3 and R4, which of the following statements is TRUE?

Options:

A.

There is no route leaking configured on router R1 or router R2.

B.

Route leaking is configured on router R1 but not on router R2.

C.

Route leaking is configured on router R2 but not on router R1.

D.

Route leaking is configured on both routers R1 and R2.

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Question # 13

Which of the following statements about IS-IS is FALSE?

Options:

A.

IS-IS uses the concept of level-1 and level-2 routers to implement hierarchy.

B.

In IS-IS, routers are associated with an area, not the interfaces.

C.

A router becomes level-2 when it is associated with the backbone area.

D.

A level-1 router forwards traffic to other areas through the nearest I eve I-1/1 eve I-2 router.

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Exam Code: 4A0-112
Exam Name: Nokia IS-IS Routing Protocol
Last Update: Apr 2, 2025
Questions: 40
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