4A0-101 Nokia Interior Routing Protocols Questions and Answers

The metric must be set accordingly for RIP

The subnet mask must be removed from the OSPF route

You must divide the cost of the OSPF route by three

The router must be configured as an ASBR

At the bottom

In the middle

At the top

It does not matter where they are placed.

Ping static 3.3.3.1

Ping static 0.0.0.0/0

Ping 3.3.3.1

Ping 0.0.0.0

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

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

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

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

True

False

Full; both routers are exchanging Helios to maintain the adjacency.

The adjacency is down.

The adjacency is in exstart state.

The adjacency is in the exchange state.

Whatever the advertised metric happens to be.

A value of 1.

This must be administratively set as there is no default value.

A value of 15.

Use an import policy and a prefix list on router R1 to reject this route.

Use a prefix list on router R1 to discard all ingress IS-IS routes.

Use an export policy and prefix list on router R1 to reject this route.

This is not possible because RIP cannot use import policies.

MD5 Authentication is not supported.

Router LSAs do not carry IPv6 prefix information

NSSA is not supported in OSPFv3.

OSPFv3 uses a 32-bit router ID.

The router with router ID 10.10.10.5 is an ASBR.

The router with router ID 10.10.10.3 is an ASBR.

The router with router ID 10.10.10.5 originated the AS summary LSA in its own area.

The router with router ID 10.10.10.4 is in the same area as the router with router ID 10.10.10.5.

IPv6 uses the Address Resolution Protocol to resolve the address to a MAC address.

A Neighbor Discovery message is sent to the broadcast MAC address. The host with the IPv6 address responds with a Neighbor Advertisement message.

A Neighbor Discovery message is sent to the solicited-node multicast address. The host with the IPv6 address responds with a Neighbor Advertisement message.

A Neighbor Discovery message is sent to the anycast address for the LAN. The host with the IPv6 address responds with a Neighbor Advertisement message.

IPv6 addresses do not need to be resolved to a MAC address.

ping static 10.5.5.5

ping static 0.0.0.0/0

ping 10.5.5.5

ping 0.0.0.0

Router LSA

AS External LSA

Intra-Area Prefix LSA

Inter-Area Prefix LSA

Network LSA

None of the statements are correct.

AFI

IDI

HO-DSP

NSEL

Routers R1 and R2 are L2 routers. Routers R3 and R4 are L1/L2 routers

Routers R1, R2, and R4 are L1/L2 routers. Router R3 is an L1 router,

Routers R1, R2, and R3 are L2 routers. Router R4 is an L1 router,

Routers R1 and R2 are L1/L2 routers. Routers R3 and R4 are L1 routers

The corporate head office router should have a default route and the branch site should have a more specific static route

The corporate head office router and the branch office router should both have specific static routes.

The corporate head office router and the branch router should both have default routes.

The corporate head office router should have a specific static route and the branch office router should have a default route.

The router sends a link-state update to its neighbor.

The router sends a link-state acknowledgement to its neighbor.

The router updates the information in its LSDB with the information received from its neighbor.

The router sends a link-state request to its neighbor.

The router takes no action.

Normal

Stub

Totally stubby

Totally NSSA

Intra-Area Prefix LSA

Router LSA

AS External LSA

NSSA LSA

It represents a group of routers on the same non-broadcast network.

It represents the topological database of the backbone network in an IS-IS network.

It represents a broadcast sub-network.

It represents the complete topology of an IS-IS area.

Only router R1 will generate Type 4 LSAs.

Only router R3 will generate Type 4 LSAs.

Routers R3 and R6 will generate Type 4 LSAs.

Routers R1.R3 and R6 will generate Type 4 LSAs.

0

1

2

3

4

L1 and L2 routers elect separate DIS's.

DIS uses a specific Ethernet multicast address to communicate with other routers on the broadcast network.

If a new router starts up in a LAN and has a higher interface priority, the new router preempts the original DIS and becomes the DIS.

In broadcast multi-access networks, such as Ethernet, one router is elected as the DIS and a second router as the backup DIS.

PSNPs are used on point-to-point links to acknowledge the receipt of an LSP.

There are three types of PSNPs: Level 1, Level 2, and Level 1/2.

A PSNP lists some of the LSPs in the router's database.

PSNPs are used by an IS-IS router to request LSP information from a neighboring router.

Hello

Link-state request

Link-state acknowledgment

Link-state update

Database description

A Type 4 LSA is not generated in a single area AS.

A Type 4 LSA is generated by the ABRs of the area that contains the ASBR.

A Type 4 LSA advertises the external networks connected to the ASBR.

A Type 4 LSA is not flooded in the area that contains the ASBR.

Add the "originate-default-route" option in the NSSA area configuration on router R3.

Add the "summaries" option to the NSSA area configuration on router R1.

Configure a static route on router R1 to 192.168.3.1.

Configure a default route on router R2.

The neighbor's link-state database has newer information than what it received in the update.

The neighbor sends the update as an acknowledgement.

The neighbor's update indicates that it has run out of space in its LSDB.

The neighbor's update indicates that the sequence number received is the same as the one already in its link-state database.

Level 2 routers interconnect the Level 1 areas.

There must be a contiguous Level 2 backbone to enable routing throughout the entire network.

Level 1 routers send packets to the nearest L1/L2 router if the destination is in a different area

Level 2 routers store the Level 1 and Level 2 topology information in a single database.

Router R1 summarizes the prefixes from router R3 as 192.168.0.0/16 and router R2 does not summarize the prefixes.

Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/16.

Router R1 summarizes the prefixes from router R3 as 192.168.0.0/20 and router R2 does not summarize the prefixes.

Router R1 does not summarize the prefixes from routers R3 and R2 summarizes them as 192.168.0.0/20.

Both routers R1 and R2 summarize the prefixes from R3 as 192.168.0.0/20.

Neither router R1 nor router R2 summarizes the prefixes from router R3.

Stub must be configured on Area 1 of router R1, and removed from Area 1 on router R3.

Stub must be configured on Area 1 of router R1 and Area 1 of router R3.

Stub must be configured on Area 0 of router R1 and Area 1 of router R3.

Area 1 of router R3 should be Area 0, in order to connect via stub to router R1.

Fixed total of 128 bits, where 64 bits are used for routing and 64 bits are used as an interface identifier.

Fixed total of 128 bits, where 32 bits are used for the global prefix, 32 bits are used for the subnet and 64 bits are used as an interface identifier.

Variable total length, where at least 48 bits are used for the global prefix, 48 bits are used for the subnet and 64 bits are used as an interface identifier.

Variable total length, where at least 64 bits are used for routing and 64 bits are used as an interface identifier

Each router constructs its own link-state database with updates received from neighbors.

When a router performs an SPF computation, it sends the results to its neighbors.

An SPF computation is done by each router to determine the best path to destination prefixes

The link-state database is identical for all routers in a single area routing domain.

Router R3 will advertise Type 7 LSAs to Area 0 and Area 2.

Only routers R2 and R3 receive Type 5 LSAs advertised by router R1.

Router R2 will receive Type 5 and Type 7 LSAs.

Router R7 will receive Type 5 LSAs advertised by router R1.

Challenge handshake authentication protocol (CHAP)

Two factor authentication

MD5 authentication

Extensible authentication protocol (EAP)

The router with the highest system ID.

The router with the highest loopback address.

The Hello packet with the highest sequence number.

The existing DIS remains the DIS.

The router with the highest interface MAC address.

IS-IS supports VLSM and CIDR.

IS-IS uses OSI addressing.

IS-IS supports manual summarization

IS-IS uses periodic Hello messages.

Initializing

Up

Down

2-Way

An OSPF type 3 LSA is an intra-area LSA, generated by the ABR only when route summarization is configured.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR only when route summarization is configured.

An OSPF type 3 LSA is an inter-area LSA, generated by an ASBR to describe external routes.

An OSPF type 3 LSA is an inter-area LSA, generated by the ABR to describe a route to neighbors outside the area.

They are sent using multicast MAC addresses 0180:0200:0014.

They are sent using multicast MAC addresses 0180:c200:0015.

They are sent using a unicast address.

None of the above.

ping static 10.5.5.5

ping static 0.0.0.0/0

ping 10.5.5.5

ping 0.0.0.0

Routers broadcast the entire route table to all neighbors.

Information about directly connected links is sent to all neighbors.

An adjacency database is maintained by each router.

The sequence number for an update is incremented as it is flooded from router to router.

The topological database is the same for all routers in a single area.

An L1/L2 router can have neighbors in different areas.

An L1/L2 router calculates separate SPF trees for the Level 1 and Level 2 topology.

An L1/L2 router advertises its L2 routes to its L1 neighbors.

An L1/L2 router sets the ATT bit in L1 LSPs to identify itself as an L1 router.

Not so stubby area

Stub area

Backbone area

Normal area