4A0-C04 Nokia NRS II Composite Exam: OSPF version Questions and Answers

65200 (65206 65202) 65100

(65206 65202)65100

65250 (65206 65202) 65100

65200 65100

Convergence is triggered when the adjacency between routers R1 and R2 drops as a result of Hello timeouts. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

Convergence is triggered when the physical interfaces between routers R1 and R2 go down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

Convergence will not be triggered because switches cannot run routing protocols between them.

Convergence is triggered when the switches notify the routers about the link state information. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged

Convergence is triggered when an LSA is sent from router R1 to router R2 to indicate that the link is down. At this point, both routers R1 and R2 re-compute their link state database and send updates to their adjacent routers. Once the process is complete for all routers, the networks have converged.

224.0.0.5

224.0.0.6

The unicast IP address of the interface the update is sent on

The system address of the router.

Type 1 Router LSA

Type 2 Network LSA

Type 3 Summary LSA

Type 4 ASBR LSA

The prefix list reject should be "192.168.3.0/16 exact".

Router R1 should be configured as an OSPF "asbr".

The policy "reject" should be set for import rather than export.

The policy was likely not "committed" after creation.

This is not possible because OSPF cannot use import policies.

Each PLR signals a bypass tunnel that avoids the next-hop downstream router.

When a failure occurs, the PLR pushs an additional label onto the label stack.

No bypass tunnel is established if the PLR cannot provide node protection.

The head-end router sets the local protection desired flag in the session attribute object.

R3 and R5 become DMPs; R6 becomes MP.

R3 and R5 become DMPs; R4 becomes MP.

R3, R5, and R6 become DMPs; R4 becomes MP.

R1, R3, and R5 becomes DMPs; R4 and R6 become MPs.

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 session between router A and router B.

The session between router C and router B.

The session between router D and router B.

Router B will learn the prefix over all of the sessions, then it will choose the best route.

Router B propagates the BGP update to routers D and C.

Router B propagates the BGP update to router D.

Router B detects duplicates in its BGP database and discards the update.

Router B propagates the update to routers A, C and D.

Router C sends the update to routers E and F only.

Router C sends the update to routers D, E and F.

Router C sends the update to routers A, B, E and F.

Router C sends the update to routers A, B, D, E and F.

R4 (10.10.10.4) has established a link protection tunnel.

R6 (10.10.10.6) has established a link protection tunnel.

R2 (10.10.10.2) has established a node protection tunnel.

R1 (10.10.10.1) has not established a node protection tunnel.

Show route-table

Show router routing-table

Show router route-table

Show static

The Isp-ping tool is used to perform a unidirectional LSP test.

The router 10.10.10.2 is the egress router of the LSP.

The router can reach the far-end of the LSP through an RSVP-TE tunnel.

The router can reach the far-end of the LSP through an LDP tunnel.

They list the RSVP session names that the router is refreshing,

They list the Message IDs that the router is refreshing,

They list the Tunnel IDs that the router is refreshing.

They list the LSP I Ds that the router is refreshing.

An OSPF database description packet has not been received from the neighbor.

The interface facing the neighbor is down.

The interface is included in a different area than the neighbor router.

The router has not received a valid OSPF Hello packet from its neighbor.

MPLS Echo Request packets are sent unlabeled to the prefix 192.10.1.2.

MPLS Echo Request packets are sent within the LDP tunnel that are signaled for 192.10.1.2.

MPLS Echo Request packets are sent within the RSVP-TE tunnel that are signaled for 192.10.1.2.

MPLS Echo Request packets are sent over TCP.

Neighbor, adjacency, route table

Neighbor, topology, forwarding

Topology, routing, forwarding

There are only two databases: adjacency and topology

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

Make a static route on router R1 to 192.168.3.1

Make a default route on router R2

1

2

3

None

The tail-end router performs the CSPF calculation for an LSP.

CSPF calculations are always performed on RSVP-TE based LSPs.

The head-end router performs the CSPF calculation for an LSP.

Each downstream router performs its own CSPF calculation for an LSP.

The FCS is verified and kept in the customer frame. The VLAN tag is kept and transported over the network.

The FCS is verified and kept in the customer frame. The VLAN tag is removed for transport over the network.

The FCS is verified and removed from the frame. The VLAN tag is kept for transport over the network.

The FCS is verified and removed from the frame. The VLAN tag is removed for transport over the network.

Enable the Idp-over-rsvp feature on all PEs and ABRs along the LSP tunnel.

Configure Link-LDP sessions between each PE-ABR and ABR-ABR pair.

Configure RSVP-TE LSPs in each area between each PE-ABR and ABR-ABR pair.

Configure T-LDP sessions with the tunneling option.

MTU mismatch

Incorrect subnet mask

System interface not included in OSPF

Area ID not the same

Different metric set on each end of the link

Router ID not defined

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.

5000

5004

5008

5014

Broadcast

Non-broadcast multi-access

Point-to-point

Point-to-multipoint

All SAPs of a VPLS belong to the same broadcast domain.

When a new site is added, all the existing sites need to be shutdown and re-provisioned.

An additional T-LDP session is required between PEs for each additional VPLS that is provisioned.

Multiple VPLSes on the same router share a single MAC FDB.

Option A

Option B

Option C

Option D

RIPv2 supports basic and MD5 authentication only.

RIPv2 supports password and MD5 authentication only.

RIPv2 does not support authentication, password and MD5 authentication.

RIPv2 does not support authentication.

Option A

Option B

Option C

Option D

From the last 32 bits of the chassis MAC address

From the first 32 bits of the chassis MAC address

The loopback IP address

By using the command "config router ospf rid X.X.X.X"

From the system IP address

From the highest interface IP address

Router R3 rejects all updates originating in AS 65540.

Router R3 accepts updates received from router R1 and rejects updates transited through router R2.

Router R3 accepts updates transited through router R2 and rejects updates received from router R1.

Router R3 accepts updates from both routers R1 and R2.

125 Mbps

500 Mbps

625 Mbps

2000 Mbps

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

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

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

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

Type 1 Router LSA

Type 2 Network LS A

Type 3 Summary LSA

Type 5 External LSA

An IGP route takes priority over a transport tunnel.

Both LDP and RSVP-TE based tunnels can be used.

MPLS tunnels can be used to resolve the prefixes learned via IGP.

Multiple MPLS tunnels can be installed in the FIB.

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.

An echo request is sent based on the LSP's label stack.

Echo reply packets may not take the same path as the LSP.

The IP destination address is used to initiate echo requests,

The test fails if the LSP is not operationally up.

A Type 4 LSA is originated by an ABR to describe a route to an ASBR to routers outside the area.

A Type 4 LSA is originated by an ASBR to describe a route to itself to routers outside the area.

A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the backbone area to provide routing information.

A Type 4 LSA is originated by an ABR that is connected to a stub area. The LSA is injected into the stub area to provide routing information.

Import policies affect ingress data flow.

Export policies affect ingress data flow.

Both import and export policies affect ingress data flow.

Policy direction and data flow are independent.