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

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

Send a PathTear message towards router R6.

Send a PathTear message towards router R1.

Send a ResvTear message toward router R6.

Send a ResvTear message toward router R1.

Prefix 172.16.0.0/12 longer.

Prefix 172.31.0.0/22 longer.

Prefix 172.31.0.0/23 longer.

Prefix 172.31.0.0/24 exact.

Show ospf neighbors

Show router ospf neighbors

Show router ospf adjacency

Show ospf adjacency

Area ID

Hello and Dead Intervals

Stub flag

DR and BDR addresses

The list of neighbors

In multi-access networks, a DR and BDR are elected only if there are more than two routers connected to the network segment.

In multi-access networks, a DR and BDR are elected only if the subnet masks on the router interfaces are less than /30

In multi-access networks, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.

In multi-access networks, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

A SAP can be associated with more than one service.

A SAP is the subscriber's point of entry to the service network.

A SAP is created by specifying a physical port and an encapsulation type.

A SAP can only be created on a port configured as "access".

The SDP to 10.10.10.1 on router R4 is shutdown.

Router R4 has not sent a label to router R1 (10.10.10.1) yet.

10.10.10.1 has a different service MTU set.

10.10.10.1 has not sent a label to router R4 yet.

Set the service MTU of the VPLS to match the IES MTU.

Set the ip-mtu of the IES to match the service MTU of the VPLS.

Set the SDP MTU of the IES to match the SDP MTU of the VPLS.

Set the MTU of the IES's network port to match the service MTU of the VPLS.

OSPF uses TCP, so the protocol number is 6.

OSPF uses UDP, so the protocol number is 17.

OSPF does not use IP.

OSPF has its own protocol number of 89.

Neighbor, adjacency, route table

Neighbor, topology, forwarding

Topology, routing, forwarding

There are only two databases: adjacency and topology

iLER

LER

LSR

PE

eLER

Update

Open

Notification

Keepalive

Advertising customer networks into BGP.

Sending aggregates that summarize the AS s address space.

Sending MEDs to influence ingress traffic from peers.

Preventing unwanted NLRI from entering the AS.

Type 1 Router LSA

Type 2 Network LS A

Type 3 Summary LSA

Type 5 External LSA

IP packets sent to an IP multicast address.

TCP packets sent to an IP multicast address.

IP packets sent to an IP unicast address.

UDP packets sent to an IP multicast address.

224.0.0.5

224.0.0.6

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

The system address of the router

LDP

BGP

MP-BGP

MPLS

The router must receive an acknowledgment

The router must receive a Hello

The router must receive a new sequence number

The router must receive a Link State Packet

They both function as a Layer 2 switch from the service provider's perspective.

They both support SAP encapsulations of null, dot1Q and Q-in-Q.

They both use SAPs as the demarcation point between the customer and the provider.

MAC addresses are learned by VPLSes, but not by E-pipes.

They must be recognized by all peers and included in all BGP updates.

They are discarded if not recognized by the recipient.

They must be recognized by all peers and optionally included in BGP updates.

The receiving router sends a notification if a well-known discretionary attribute is not present in an update.

Only the mirror source must be re-configured.

Only the mirror destination must be re-configured.

Both the mirror destination and mirror source must be re-configured.

Neither the mirror destination nor the mirror source must be re-configured.

The service is a local service.

The service requires a second spoke SDP on this router.

The service's VC ID is 44.

The service will accept VLAN tag 100.

MPLS tunnels are used to carry transit traffic across the network.

A full mesh of iBGP peering sessions is not required,

Edge and transit routers need to be configured with BGP.

The transit routers need to support LDP or RSVP-TE LSPs.

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.

The router must receive several BGP routes to compute a backup path.

BGP FRR can be triggered by BFD.

The backup path can use the same next hop as the primary path.

BGP peer-tracking can be used to improve BGP FRR failure detection times.

The local system has received a Keepalive message and is ready to exchange updates.

The local system is exchanging Update messages with its neighbor.

The local system has sent a Keepalive message to its neighbor and is waiting to receive one back.

The local system has sent an Open message to its neighbor and is waiting to receive one back.

Customers must use the same routing protocol as the service provider.

Customers belonging to the same VPRN service must use the same subnet.

Service providers only need to perform configurations on the PEs to add additional VPRNs.

For each VPRN, only one customer can be connected at each PE.

The OSPF internal preference

The IS-IS Level 1 internal preference

The IS-IS Level 2 internal preference

The OSPF external preference

The IS-IS Level 2 external preference

The IS-IS Level 1 external preference

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.

Option A

Option B

Option C

Option D

0

1

2

3

All BGP routes are accepted.

All routes matching prefix lists "List-1" and "List-2" are rejected.

BGP routes matching prefix lists "List-1" or "List-2" are rejected.

BGP routes matching prefix lists "List-1" and "List-2" are rejected.

Ping static 3.3.3.1

Ping static 0.0.0.0/0

Ping 3.3.3.1

Ping 0.0.0.0

Family ipv4

Family ipv6

Family ipv4 ipv6

Family vpn-ipv4

Family vpn-ipv4 vpn-ipv6

Option A

Option B

Option C

Option D

Incoming label

Outgoing label

Incoming interface

Outgoing interface

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.

The MTU does not match on both interfaces

OSPF is not enabled on one of the routers

The Router ID is the same on both routers

A OSPF Hello has not been received from the neighbor

0

5

10

15

30 second network updates

Classless routing

Broadcast advertisement

Poison Reverse