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  4. 4A0-C04 - Nokia NRS II Composite Exam: OSPF version

Nokia 4A0-C04 Nokia NRS II Composite Exam: OSPF version Exam Practice Test

Demo: 44 questions
Total 298 questions
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Nokia NRS II Composite Exam: OSPF version Questions and Answers

Question 1

Click the exhibit.

If router A originates a BGP route for prefix 192.168.0.1/27, what will the update contain when it reaches router B?

Options:

A.

AS Path of 65200, Next Hop of router A, Origin of IGP.

B.

AS Path of 65200, Next Hop of router A, Origin of incomplete.

C.

Null AS Path, Next Hop of router A, Origin of IGP.

D.

Null AS Path, Next Hop of router A, Origin of incomplete.

Question 2

A router receives an OSPF database description packet from a neighbor that references an LSA, which is already in the router's LSDB. The sequence number in the DBD packet is lower than the sequence number of the LSA in the LSDB.

What action does the router take?

Options:

A.

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

B.

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

C.

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

D.

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

E.

The router takes no action.

Question 3

Router R1, in AS 65540, has the export policy shown below. It advertises an aggregate route to eBGP peer router R2 in 65550. What is the AS Path of the aggregate route received by router R2?

Options:

A.

65540

B.

65540 1

C.

65540 65540

D.

65550 65540

Question 4

From what range are 16-bit private AS numbers selected?

Options:

A.

64496 – 64511

B.

1 – 56319

C.

64512-65534

D.

64513-65535

E.

There are no defined private AS numbers; there are only private IP addresses.

Question 5

Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP policy?

Options:

A.

"client2" routes will be tagged with communities "West" and "North".

B.

"client2" routes will be tagged with communities "West", "North" and "South".

C.

"client2" routes will be tagged with community "West".

D.

"client2" routes will be tagged with community "South".

Question 6

What are some of the characteristics of Nokia's implementation of non-stop routing? (Choose two)

Options:

A.

No protocol extensions required

B.

Only supported by OSPF and IS-IS

C.

Transparent to routing neighbors

D.

Uses Graceful Restart to inter-operate with other vendors

Question 7

Which of the following statements about SAPs that are part of a VPVVS is FALSE?

Options:

A.

SAPs can be defined on Ethernet, POS, Sonet/SDH, or TDM channels.

B.

Only one SAP is required for a service that originates and terminates on the same Nokia 7750 SR.

C.

SAPs can have QoS policies assigned to them.

D.

Multiple SAPs can be defined on the same port.

Question 8

Click on the exhibit.

Which of the following is FALSE?

Options:

A.

The router can reach prefix 192.10.1.2/32 through a RSVP-TE tunnel.

B.

The router can reach prefix 192.10.1.2/32 through an LDP tunnel.

C.

The router 10.10.10.2 is the egress router of the prefix 192.10.1.2/32.

D.

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

Question 9

Click the exhibit.

After router A receives the BGP update for the 10.3.3.0/24 prefix, which routers will the route be propagated to?

Options:

A.

All routers with which it has a BGP session.

B.

All routers with which it has a BGP session, except the router it received the update from, which is router B.

C.

All routers with which it has a BGP session, except the router it received the update from, which is router C.

D.

All routers with which it has a BGP session, except the router it received the update from, which is router D.

E.

Only eBGP neighbors.

Question 10

What are the default Hello and Dead timer intervals for OSPF on the Nokia 7750 SR?

Options:

A.

5 and 15 seconds

B.

10 and 30 seconds

C.

5 and 20 seconds

D.

10 and 40 seconds

Question 11

Click the exhibit button.

If router R2 redistributes the IS-IS route to 192.168.3.0/24 into OSPF, router R3 preference of these two routes? Choose two answers.

Options:

A.

The OSPF internal preference

B.

The IS-IS Level 1 internal preference

C.

The IS-IS Level 2 internal preference

D.

The OSPF external preference

E.

The IS-IS Level 2 external preference

F.

The IS-IS Level 1 external preference

Question 12

Assuming that "client1" and "client2" are directly-connected networks, what is the result of executing the following BGP export policy?

Options:

A.

"client1" routes will be tagged with communities "North" and "West".

B.

"client1" routes will be tagged with community "West".

C.

"client1" routes will be tagged with community "North".

D.

"client1" routes will be rejected.

Question 13

Which of the following statements apply to link state protocol behavior? Choose three answers.

Options:

A.

Routers broadcast the entire route table to all neighbors.

B.

Information about directly connected links is sent to all neighbors.

C.

An adjacency database is maintained by each router.

D.

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

E.

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

Question 14

In an OSPF environment, what must a router receive after it sends out an update?

Options:

A.

The router must receive an acknowledgment

B.

The router must receive a Hello

C.

The router must receive a new sequence number

D.

The router must receive a Link State Packet

Question 15

Choose the Distance Vector Protocols from the list below:

Options:

A.

OSPF

B.

RIPv1

C.

RIPv2

D.

IS-IS

Question 16

On Nokia 7750 SR OS, routing information between the CE and PE can be exchanged using the following methods.

Options:

A.

ISIS, RIP, OSPF, static routes

B.

BGP, ISIS, RIP, OSPF, static routes

C.

BGP, RIP, OSPF, static routes, OSPF3

D.

ISIS, RIP, OSPF, static routes, OSPF3

Question 17

What is the default inbound metric for RIP on the Nokia 7750 SR?

Options:

A.

Whatever the advertised metric happens to be.

B.

A value of 1.

C.

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

D.

A value of 15.

Question 18

In which of the following types of areas does an OSPF router not set the E bit in its Type 1 LSA?

Options:

A.

Not so stubby area

B.

Stub area

C.

Backbone area

D.

Normal area

Question 19

Which of the following about RSVP-TE is FALSE?

Options:

A.

It supports traffic protection using IGP equal cost paths.

B.

It supports CAC to prevent resource overbooking.

C.

It supports LSPs with traffic engineering constraints.

D.

It supports LSPs that follow the IGP best path.

Question 20

Which of the following OSPF area types are supported by the Alcatel- Lucent 7750 SR? Choose two answers.

Options:

A.

Not so stubby areas

B.

Level1 area WC

C.

Stub areas

D.

Partially stubby areas

E.

Level 2 areas

Question 21

Which of the following statements regarding BGP FRR is FALSE?

Options:

A.

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

B.

BGP FRR can be triggered by BFD.

C.

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

D.

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

Question 22

Click the exhibit.

Assuming that none of the routers within AS 65200 is configured with next-hop-self", what will the BGP update for the 192.168.0.1/27 prefix contain when it arrives at router B?

Options:

A.

AS Path of 65200 65100, Next Hop of router A.

B.

AS Path of 65200 65100, Next Hop of router E.

C.

AS Path of 65100, Next Hop of router E.

D.

AS Path of 65100, Next Hop of router A.

Question 23

Which of the following is a characteristic of LDP Hello messages?

Options:

A.

They are multicast to the All Hosts address.

B.

They are broadcast to the subnet broadcast address.

C.

They are multicast to the All Routers address.

D.

They are broadcast or multicast, depending on the physical media.

Question 24

An Nokia 7750 SR has the BGP configuration shown below. Assuming the router has established BGP sessions to routers R1 and R2, which of the following is TRUE?

Options:

A.

Both neighbors R1and R2 should be part of AS 65540.

B.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65540.

C.

Neighbor R1should be part of AS 65550, while neighbor R2 should be part of AS 65560.

D.

Both neighbors R1and R2 should be part of AS 65560.

Question 25

A static route is created using the command "static-route 2.3.4.0/24 next-hop 1.2.3.4". What is the correct traceroute command to test this static route on an Nokia 7750 SR?

Options:

A.

traceroute 2.3.4.1

B.

traceroute 2.3.4.0/24 next-hop 1.2.3.4

C.

traceroute next-hop 1.2.3.4

D.

traceroute does not work on the Nokia 7750 SR

Question 26

A BGP session is in OpenConfirm state. Which of the following messages must be received to transition to Established state?

Options:

A.

Update

B.

Open

C.

Notification

D.

Keepalive

Question 27

Click the exhibit.

The output is from PE router R4 about VPRN service 100. How many prefixes have been learned from the MP-BGP protocol?

Options:

A.

0

B.

2

C.

3

D.

6

Question 28

Click on the exhibit.

RSVP session state for LSP 1 has timed out on router R3. Which of the following actions will router R3 initiate to clear the RSVP session?

Options:

A.

Send a PATH Tear message toward router R6.

B.

Send a PATH Tear message toward router R1.

C.

Send a PATH Error message toward router R6.

D.

Send a PATH Error message toward router R1.

Question 29

Which of the following statements best describes the function of an OSPF Type 4 LSA?

Options:

A.

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

B.

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

C.

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.

D.

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.

Question 30

From the list below select the statements that describe the behavior of link state information aging. (Choose 2)

Options:

A.

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

B.

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

C.

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

D.

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

Question 31

Which of the following is considered a best practice for BGP address planning?

Options:

A.

Advertising external networks into IGP.

B.

Using system addresses for setting up iBGP sessions.

C.

Exporting the networks associated with the external links of eBGP peers into BGP.

D.

Optimizing BGP route table by exporting IGP routes into BGP.

Question 32

There is an IP host with IP address 10.2.3.1. A static route is created, using the "configure router static-route 10.2.3.0/24 next-hop 10.1.2.1" command. What is the correct traceroute command to test this static route on an Nokia 7750 SR?

Options:

A.

traceroute 10.2.3.1

B.

traceroute 10.2.3.1 next-hop 10.1.2.1

C.

traceroute next-hop 10.1.2.1

D.

traceroute does not work on the Nokia 7750 SR.

E.

traceroute 10.1.2.1

Question 33

Click the exhibit.

Routers RR1 and RR2 are route reflectors with the same Cluster-ID. How does router RA treat the updates for prefix 192.168.1.0/27 received from routers RR1 and RR2?

Options:

A.

Router RA prefers the update received from router RR1.

B.

Router RA prefers the update received from router RR2.

C.

Router RA flags both updates as invalid.

D.

Router RA accepts both updates and flags them as used.

Question 34

Click on the exhibit.

Router R2 learns the networks shown from IS-IS. Router R2 is configured to redistribute routes from IS-IS to OSPF as shown. Assume the OSPF and IS-IS adjacencies are operational.

How many OSPF Type 5 LSAs will router R1 receive from router R2?

Options:

A.

0

B.

1

C.

2

D.

3

E.

4

Question 35

Click on the exhibit.

When router R1 forwards a PATH message to router R2, which of the following about the PATH message's IP header is TRUE?

Options:

A.

The options field is set to router alert.

B.

The source address is R1's egress interface address.

C.

The destination address is R2's ingress interface address.

D.

The HOP object includes R2's system address.

Question 36

The Nokia 7750 SR supports which two of the OSPF area types below?

Options:

A.

Not So Stubby Areas

B.

Level 1 Areas

C.

Stub Areas

D.

Partially Stubby Areas

Question 37

Click the exhibit button.

What can you deduce from the show command on router R6?

Options:

A.

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.5.

B.

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment; however, this command does not indicate whether 10.10.10.3 or 10.10.10.5 is the DR or BDR.

C.

The router R6 interface is in a multi-access segment. It is the BDR, which is why it is not adjacent to the other routers.

D.

The router R6 interface is in a multi-access segment. It is neither the DR nor the BDR for the segment. The DR for this segment would be the router with router ID 10.10.10.3.

Question 38

In an IP datagram, which field identifies the receiving application

Options:

A.

The protocol field of the transport layer header

B.

The port field of the transport layer header

C.

The protocol field of the network layer header

D.

The port field of the network layer address

Question 39

Which of the following about VPRN VRF tables is FALSE?

Options:

A.

A PE uses the same VRF table for all the VPRN services on it.

B.

A PE uses a VRF to maintain forwarding information.

C.

Information for VRFs can be advertised between PEs by MP-BGP.

D.

A PE uses a VRF to route traffic to CEs.

Question 40

Refer to the exhibit.

Assume that OSPFv3 is properly configured on all routers and that R4 advertises its system prefix into Area 0. Which of the following statements best describes how R5 learns R4's IPv6 system prefix?

Options:

A.

With a Router LSA originated by R1

B.

With a Router LSA originated by R5

C.

With a Router LSA originated by R4

D.

With an Inter-Area Prefix LSA originated by R1

E.

With an Inter-Area Prefix LSA originated by R5

F.

With an Inter-Area Prefix LSA originated by R4

Question 41

A VPLS has a service MTU of 1600. To create an IES spoke termination to the VPLS, what ip-mtu value must be used for the IES?

Options:

A.

1586

B.

1596

C.

1600

D.

1614

Question 42

What is the protocol number for OSPF in the IP header?

Options:

A.

OSPF uses TCP, so the protocol number is 6.

B.

OSPF uses UDP, so the protocol number is 17.

C.

OSPF does not use IP.

D.

OSPF has its own protocol number of 89.

Question 43

Click the exhibit.

The CEs use BGP and export policies to advertise their local prefixes with the VPRN on their PEs. If the VPRN is functioning properly, which of the following commands will succeed when performed on router R1?

Options:

A.

"ping 192.168.20.1"

B.

"oam vprn-ping 100 source 192.168.10.1 destination 192.168.20.1"

C.

"oam vprn-ping 100 source 192.168.20.1 destination 192.168.10.1"

D.

"ping 10.10.10.6" (router R6's system IP)

Question 44

An Nokia 7750 SR receives a route from an eBGP peer with a MED value of 500. What

MED value is sent to iBGP peers?

Options:

A.

100

B.

The IGP cost

C.

500

D.

None

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