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Nokia 4A0-C04 Dumps

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Nokia NRS II Composite Exam: OSPF version Questions and Answers

Question 1

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 2

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 3

Click the exhibit button.

Router R2 advertises the network 192.168.3.0/24 to router R1 via OSPF. A route policy has been constructed to discard the route on router R1; however, it is not working. What is the problem?

Options:

A.

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

B.

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

C.

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

D.

The policy was likely not "committed" after creation.

E.

This is not possible because OSPF cannot use import policies.

Question 4

Click on the exhibit.

If the primary path fails, which backup LSP path will the head-end router pick first?

Options:

A.

The Standby with the highest next-hop IP.

B.

The first Standby in the list.

C.

The Standby with the longest uptime.

D.

The Standby with the lowest next-hop IP.

Question 5

Click the exhibit.

Router R6 is a route reflector with clients R1, R2, R4 and R5. Router R4 receives three routes from router R6 and is configured with ECMP 3. Given the following BGP configuration on routerR4, how many primary and backup paths will be present in router R4's BGP routing table?

Options:

A.

Three primary paths,

B.

Two primary paths and one backup path.

C.

One primary path and two backup paths.

D.

One primary path and one backup path.

Question 6

Which of the following regarding MPLS label value assignment is FALSE?

Options:

A.

Label values may be dynamically assigned by LDP.

B.

Label values may be dynamically assigned by RSVP-TE.

C.

Label values may be reserved for special uses.

D.

Label values may be dynamically assigned by IGP.

Question 7

Click on the exhibit.

A fully loose LSP "toR6" is configured. All links have the same cost and all routers are Nokia 7750 SRs. The LSP currently traverses the path R1-R2-R7-R8-R4-R6 and the resignal timer is enabled. Which of the following about this LSP is FALSE?

Options:

A.

The LSP will switchover to another path if a failure occurs.

B.

The LSP will switchover to a better path as soon as it is available.

C.

CSPF must be enabled for this LSP to attempt to find a better path.

D.

The LSP will switchover to a better path in a MBB fashion.

Question 8

Click on the exhibit button below:

Consider the following:

- Router R2 is an ABR in OSPF Areas 0 and 1.

- Router R2 advertises the aggregate prefix 10.10.10.0/24 into Area 1.

- Router R1 in Area 0 generates LDP labels for FECs 10.10.102/31 and 10.10.10.4/31

Router R3 in Area 1 places these FECs in its LIB, but it does not place them in its LFIB. What can you do on router R3 to make it populate these labels in its LFIB?

Options:

A.

Disable route summarization on router R3

B.

Enable LDP aggregate prefix match

C.

Create an import policy to accept these FECs

D.

Disable LDP exact match on the specified FECs

Question 9

Which of the following about Fast Reroute link protection tunnels is FALSE?

Options:

A.

Link protection tunnels are established if a router is unable to establish node protection tunnels.

B.

Link protection tunnels are only requested for a primary LSP path.

C.

Link protection tunnels can be created for both one-to-one or facility Fast Reroute.

D.

Link protection tunnels detour around a failed next downstream router.

Question 10

Click the exhibit button.

What is the command to configure a static route on the Nokia 7750 SR router R1 to reach the network behind router R2?

Options:

A.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.2

B.

configure router static-route 139.120.121.0/24 next-hop 138.120.199.1

C.

configure router static-route 138.120.199.2/24 next-hop 138.120.199.1

D.

configure router static-route 139.120.121.0/24 next-hop 139.120.121.2

Question 11

Which of the following concerning OSPFv3 is TRUE?

Options:

A.

OSPFv3 uses MD5 Authentication.

B.

Router LSAs carry IPv6 prefix information.

C.

NSSA is supported in OSPFv3.

D.

OSPFv3 uses a 64-bit router ID.

Question 12

Click on the exhibit.

What is the possible reason that the label for prefix 192.10.1.2/32 is not active?

Options:

A.

The router does not have a route to reach to the peer 10.10.10.2/32.

B.

The router does not have a route to reach to the prefix 192.10.1.2/32.

C.

The router does not have an export policy defined to export the prefix 192.10.1.2/32 into LDP.

D.

The router receives an invalid label for the prefix 192.10.1.2/32 from its peer.

Question 13

When configuring distributed services across a network, it is considered best practice to configure which of the following parameters as globally significant?

Options:

A.

Customer ID and SAP ID.

B.

Customer ID and Service ID.

C.

SAP ID and Service ID.

D.

SDP ID and Service ID.

E.

SDP ID and SAP ID.

F.

SDP ID and VC ID.

Question 14

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 15

Click the exhibit button.

192.168.3.1 is a loopback interface on router R2 and is distributed to OSPF area 0, but the ping fails from router R3. Which of the following is a possible solution to the problem?

Options:

A.

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

B.

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

C.

Make a static route on router R1 to 192.168.3.1

D.

Make a default route on router R2

Question 16

Click the exhibit.

Router R6 is a route reflector with clients R1, R2 and R5. Router R3 advertises the prefix 192.168.1.0/27 to routers R1, R2 and R5. How many routes for prefix 192.168.1.0/27 will router R6 receive?

Options:

A.

1

B.

2

C.

3

D.

None

Question 17

An OSPF router receives an update in which the sequence number, age, and checksum are the same as the entry already in the topological database. What action is taken by the router?

Options:

A.

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

B.

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

C.

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

D.

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

Question 18

Exhibit

Given the two configurations shown, identify the two incorrect statements below: (Choose two)

Options:

A.

Both routers will generate OSPF Hello packets.

B.

The system interface is missing in one configuration so OSPF will not operate correctly.

C.

The interface type settings differ, but OSPF will still operate correctly.

D.

Metric values differ, but this does not prevent OSPF operation.

Question 19

Click on the exhibit.

An LDP-over-RSVP tunnel is established between PE-1 and PE-2. Which of the following is NOT required to protect the LDP-over-RSVP tunnel?

Options:

A.

PE-1 requires T-LDP sessions to both ABR-1 and ABR-2.

B.

PE-1 requires a full mesh of RSVP-TE LSPs to all routers in area 1.

C.

ABR-1 requires T-LDP sessions to all ABRs in area 0.

D.

PE-1 requires fast reroute enabled on all RSVP-TE LSPs.

Question 20

Which of the following devices assumes the active role during the establishment of an LDP session?

Options:

A.

The peer with the higher physical address.

B.

The peer with the higher transport address.

C.

The peer with the lower physical address.

D.

The peer with the lower transport address.

E.

The peer that generated the first Hello message.

Question 21

Consider a device that uses per-platform label space; which of the following fields is NOT contained in the LFIB?

Options:

A.

Incoming label

B.

Outgoing label

C.

Incoming interface

D.

Outgoing interface

Question 22

Click on the exhibit.

Which of the following is FALSE?

Options:

A.

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

B.

The router 10.10.10.2 is the egress router of the LSP.

C.

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

D.

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

Question 23

Which of the following is TRUE when the explicit null is implemented?

Options:

A.

The penultimate router will forward packets to the eLER, based on the IP header.

B.

The eLER will receive packets with a top label value of 0.

C.

The eLER will receive packets with a top label value of 3.

D.

The penultimate router will pop the top label from the packets.

Question 24

Click the exhibit button.

Routers R1 „ R2, and R3 are running a classful routing protocol between them. Assuming that router R1 advertises all directly connected networks, how will these networks be represented in router R3's routing table?

Options:

A.

Router R3's routing table can only contain one of the routes, which will result in route flapping.

B.

Router R3's routing table will have one entry for 10.1.1.0/24 and one entry for 10.1.2.0/24.

C.

The networks will be represented with one entry of 10.0.0.0/8 in router R3's routing table.

D.

The networks will be represented with one entry of 10.0.0.0/24 in router R3's route table.

Question 25

Which of the following regarding per-platform label space is TRUE?

Options:

A.

A separate label is used for each interface on which the FEC is advertised.

B.

A single label is assigned to a FEC for all interfaces on the same router,

C.

It is typically used when the device has ATM or Frame Relay interfaces.

D.

It uses more label resources than a per-interface label space.

Question 26

Click on the exhibit.

An LDP tunnel is established on R1-R2-R4-R6 because the link between routers R3 and R6 is down. With the LDP-IGP Sync feature enabled, what happens immediately after the link is restored?

Options:

A.

A new LDP session is established on R1-R3-R6 as soon as the FIB is updated.

B.

The LDP session remains unchanged until the existing path R1-R2-R4-R6 goes down.

C.

A new LDP session is established on R1-R3-R6 as soon as router R1 receives a new label for router R6.

D.

The LDP session remains unchanged until router R3 stops advertising the maximum metric for the link to router R6.

Question 27

Click the exhibit.

The two PEs are providing 6VPE and IPv4 VPRNs. The core network is IPv4/MPLS. Which of the following is the BGP family configuration for the MP-BPG on the PEs?

Options:

A.

family ipv4 ipv6

B.

family vpn-ipv4ipv6

C.

family vpn-ipv4 vpn-ipv6

D.

family ipv6 vpn-ipv6

Question 28

Which of the following about LSP path configuration on an Nokia 7750 SR is TRUE?

Options:

A.

The path must include at least one hop.

B.

The path may be used for multiple LSPs.

C.

The path may be used multiple times in a single LSP.

D.

The path must define a tunnel destination IP address.

Question 29

Click the exhibit button.

The OSPF packets shown have been exchanged between two neighbors. What state is the OSPF adjacency in?

Options:

A.

The adjacency state is two way because both routers have received a database description packet.

B.

The adjacency is in the exchange state. The next step is to exchange link state request and link state update packets.

C.

The adjacency is in the ex start state. The routers have exchanged database description packets, but still have to negotiate the starting sequence number.

D.

The adjacency state is full. The routers are exchanging database description packets to notify each other that all link state advertisements have been received.

Question 30

Which of the following about VPLS MAC learning is FALSE?

Options:

A.

The PE routers of the service are responsible for learning MAC addresses.

B.

Flooding ensures that all PEs in a fully-meshed VPLS will learn the source address of all traffic.

C.

MAC learning reduces flooding of frames with previously learned addresses.

D.

Multiple VPLSes on the same PE share the same MAC FDB.

Question 31

Identify two attributes of Distance Vector Protocols: (Choose two)

Options:

A.

Use split horizon by default.

B.

Send information about directly connected links to neighbors at periodic intervals.

C.

Use holddown timers when topologies change to allow for convergence.

D.

Maintain multiple databases: neighbor, topology and routing.

Question 32

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 33

Click on the exhibit.

LSP 1's link between routers R3 and R6 has failed, and the RESV state at router R3 has timed out. Which of the following actions will router R3 initiate?

Options:

A.

Send a PathTear message towards router R6.

B.

Send a PathTear message towards router R1.

C.

Send a ResvTear message toward router R6.

D.

Send a ResvTear message toward router R1.

Question 34

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 35

If an Nokia 7750 SR is an iLER operating in pipe mode, which of the following regarding the TC field (EXP bits) is TRUE?

Options:

A.

The TC field is set based on the value of the DSCP field inside the customer packet.

B.

The TC field is set to a specific value via explicit administrative configuration.

C.

The TC field is set to a system generated random number.

D.

The TC field is set by the eLER.

Question 36

Click the exhibit.

Considering that both routers C and D are advertising the eBGP learned prefix 10.5.0.0/16 into

ISP X, which of the following best describes the route advertisement within ISP X?

Options:

A.

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

B.

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

C.

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

D.

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

Question 37

How many service labels must be signaled to bring up a fully-meshed VPLS among three PE routers?

Options:

A.

1

B.

3

C.

6

D.

12

Question 38

What must be configured on the Nokia 7750 SR for RIP to advertise locally attached links?

Options:

A.

A policy statement within the router identifying what is to be advertised

B.

Access-lists denoting what is to be advertised

C.

Default metrics for each link

D.

A group and neighbor statement for each peer

Question 39

Click the exhibit.

An update travels from AS 137000 to AS 135000, traversing both 32-bit and 16-bit AS Paths.

What AS Path is seen by AS 200?

Options:

A.

140000 137000

B.

137000 140000

C.

23456 23456

D.

200 140000 137000

Question 40

Which of the following is TRUE if the local state of BGP is OpenConfirm?

Options:

A.

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

B.

The local system is exchanging Update messages with its neighbor.

C.

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

D.

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

Question 41

Which of the following statements regarding Internet Exchange Points is FALSE?

Options:

A.

They provide both peering and transit services.

B.

They provide services only to Tier 1 service providers.

C.

They can be either public or private.

D.

They provide services at the local, regional and continental levels.

Question 42

Click the exhibit button.

Two neighboring OSPF routers have exchanged the packets shown. What state is the adjacency in?

Options:

A.

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

B.

The adjacency is down.

C.

The adjacency is in exstart state.

D.

The adjacency is in the exchange state.

Question 43

An Nokia 7750 SR is configured with an export policy to redistribute its directly-connected networks into BGP. Which of the following databases contains the routes for these networks?

Options:

A.

The routes are in the RIB-In.

B.

The routes are in the Loc-RIB.

C.

The routes are in the RIB-Out.

D.

The routes are not in any of the BGP databases.

Question 44

Click on the exhibit.

The route table on router R2 shows the system address of router R5 but it does not show any of the interfaces from the non-OSPF area.

What may be causing this?

Options:

A.

'asbr' is missing from router R1's configuration.

B.

Router R1 needs to have an export policy added to it.

C.

Router R5 does not have an export policy for these prefixes.

D.

Router R1 needs to have an import policy added to it.

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Total 298 questions
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