Online Access Free 4A0-112 Practice Test

Refer to the exhibit.

Routers R1 through R4 are running an IGP in such a way that they have each other's system IP addresses in their routing tables. A static route is configured on router R1 so that it can reach subnetwork 10.4.100.0/24. The network administrator decides to use an indirect static route, as shown in the diagram. However, pinging the server from router R1 fails. What may be the problem in this case?

• A.Router R1 drops the echo request because address 10.10.10.3 does not belong to an adjacent router.
• B.Router R2 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
• C.Router R3 drops the echo request because it does not have subnet 10.4.100.0/24 in its routing table.
• D.The echo request arrives at the server but there is no path for the echo response to return to router R1.

Refer to the exhibit.

A static route has been configured on router R1 to reach the PC at 139.120.121.2.
What might be causing the ping to fail?

• A.The configured static route needs to be a default route.
• B.Router R1 needs a static route to router R2.
• C.Router R2 needs a static route to the PC.
• D.The configured next hop does not belong to a subnet adjacent to R1.

An IS-IS router receives a CSNP that references an older LSP than the one in its local database. What action is taken?

• A.The router sends a copy of the referenced LSP from its database to its neighbor.
• B.The router updates its database with the new sequence number and floods a copy of the LSP to its other neighbors.
• C.The router sends a PSNP to its neighbor to request a copy of the LSP.
• D.The router sends a CSNP to its neighbor describing the newer LSPs in its database.

Which of the following definitions best describes route redistribution?

• 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 controlling which route advertisements received from routing peers are accepted and/or deciding which locally known prefixes are advertised to routing peers.
• C.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.
• D.It is the process of passing routing information from one routing domain to another, which usually means from one routing protocol to another.

Which of the following is NOT a required configuration step to successfully run IS-IS on a router?

• A.The router needs to be associated with an IS-IS area ID.
• B.A reference bandwidth needs to be configured to calculate link costs.
• C.The IS-IS context needs to be enabled.
• D.Layer-3 interfaces that will participate in IS-IS need to be identified.