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Pass the Nokia Network Routing Specialist II (NRS II) 4A0-112 Questions and answers with ExamsMirror

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Questions # 1:

Question # 1

Examine the physical topology of the IS-IS network, the metrics of the links and the levels of the routers. All routers have their system interfaces included in IS-IS. Which of the following statements describes the route-table entry that router R4 will use to reach the system IP address of router R6?

Options:

Router R4 will have a route to router R6’s system IP address with router R2 as the next-hop.

Router R4 will have a default route with router R2 as the next-hop.

Router R4 will have a default route with router R3 as the next-hop.

Router R4 will not have a matching entry in its routing table for router R6’s system IP address.

Questions # 2:

On a broadcast interface, an IS-IS router receives an LSP that is newer than the one on its database. Which of the following statements best describes the actions taken by the router as a consequence?

Options:

The router sends back a copy of the LSP from its database to its neighbor.

The router updates its database with the LSP and floods a copy to its neighbors on other interfaces.

The router updated its database with the LSP, acknowledges the LSP with a PSNP, and floods a copy to its neighbors on other interfaces.

The router updates its database with the LSP and acknowledges it with a PSNP.

Questions # 3:

When using IS-IS in native mode for routing in a dual-stack IPv4/IPv6 environment, which of the following statements is FALSE?

Options:

All links are assumed to be IPv4- and IPv6-capable.

The same topology information is used to calculate the shortest path tree for both IPv4 and IPv6.

In a multi-area environment, the SPF algorithm needs to be run four times on each L1/L2 router.

It may lead to traffic black-holing if not properly designed.

Questions # 4:

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

Options:

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

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

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

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

Questions # 5:

A new router is added to a broadcast network. What does IS-IS use as the tiebreaker for selecting the DIS if the priorities are the same?

Options:

The router with the highest system ID.

The Hello packet with the highest sequence number.

The existing DIS remains the DIS.

The router with the highest interface MAC address.

Questions # 6:

Question # 6

In the IS-IS network shown, router R1 has been configured to summarize subnetworks 20.20.1.0/24 and 20.20.2.0/24 as 20.20.0.0/16. Which routers’ routing tables will be reduced, compared to their routing tables before the summarization?

Options:

Router R1

Router R2

Routers R1 and R2

Routers R2 and R4

Questions # 7:

Which of the following definitions best describes route redistribution?

Options:

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

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.

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

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.

Questions # 8:

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:

The IP prefixes of subnets directly attached to the router.

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

A copy of the local routing table.

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

Questions # 9:

Which component of the Nokia 7750 SR is in charge of performing the longest prefix match lookup on packets that arrive on the physical interfaces?

Options:

Control Processing Module (CMP)

Media Dependent Adapter (MDA)

Switch Fabric (SF)

Input/Output Module (IOM)

Questions # 10:

Question # 10

All routers in the diagram are running a link-state routing protocol. Before the link failure, all routers have operational adjacencies with each other and there is a BFD session between routers R1 and R3. After the link failure, which of the following affects the routing protocol’s convergence time?