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

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Total 298 questions

Nokia NRS II Composite Exam: OSPF version Questions and Answers

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Question 1

Which of the following commands would correctly configure the confederation AS number as 65200 with a member AS of 65202?

Options:

A.

config>router- confederation 65200 members 65202

B.

config>router>bgp= confederation 65200 members 65202

C.

config>router= confederation 65202 members 65200

D.

config>router>bgp= confederation 65202 members 65200

Question 2

Static routing will be used in a network between a corporate head office, with many connected networks, and a branch office, with one connection to the head office. Which of the following best describes the likely configuration?

Options:

A.

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

B.

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

C.

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

D.

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

Question 3

Click the exhibit.

When router A receives the BGP update for the 192.168.0.1/27 prefix, it propagates it to routers B and C. What action is taken by router B when it receives the update?

Options:

A.

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

B.

Router B propagates the BGP update to router D.

C.

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

D.

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

Question 4

What type of LSA is used to flood information about prefixes from one OSPF area to other attached areas?

Options:

A.

Type 1

B.

Type 3

C.

Type 4

D.

Type 7

Question 5

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 6

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 7

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 8

Which regular expression will match the AS Path of a route originating in remote AS 65100?

Options:

A.

".+ 65100"

B.

"65100.+"

C.

".* 65100.*"

D.

"65100"

Question 9

Click the exhibit.

Given that ISP 1 and ISP 2 are Tier 2 providers, and that ISP 3 and ISP 4 are Tier 1 providers, what is the most likely relationship between ISP 1 and the other ISPs?

Options:

A.

ISP 1 has a peering relationship with ISP 2 and ISP 4.

B.

ISP 1 has a peering relationship with ISP 2 and a transit relationship with ISP 3.

C.

ISP 1 has a peering relationship with ISP 2 and ISP 3.

D.

ISP 1 has a transit relationship with ISP 2 and ISP 4.

E.

ISP 1 has a transit relationship with ISP 2 and a peering relationship with ISP 3.

Question 10

If a Router originates a type 1 router LSA with the E bit set what types of areas can it belong to? Select all that apply.

Options:

A.

Not So Stubby Area

B.

Stub Area

C.

Backbone Area

D.

Standard Area

Question 11

Which of the following regarding "well-known discretionary'' BGP attributes is TRUE?

Options:

A.

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

B.

They are discarded if not recognized by the recipient.

C.

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

D.

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

Question 12

If the Nokia 7750 SR is rebooted after an "admin save'' has been performed, which of the following about mirror services is TRUE?

Options:

A.

Only the mirror source must be re-configured.

B.

Only the mirror destination must be re-configured.

C.

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

D.

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

Question 13

How are policy direction and data flow related on the Nokia 7750 SR?

Options:

A.

Import policies affect ingress data flow.

B.

Export policies affect ingress data flow.

C.

Both import and export policies affect ingress data flow.

D.

Policy direction and data flow are independent.

Question 14

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 15

What is the purpose of a T-LDP session?

Options:

A.

It allows link LDP to be configured on the edge devices only.

B.

It is used to signal the transport labels in the provider core.

C.

It allows selective control over which devices are configured for LDP.

D.

It is used to signal the service labels in the provider core.

Question 16

Click the exhibit.

Given the following configuration for router R1, what is the expected Next Hop for prefix 192.168.1.0/27 as seen on router R2?

Options:

A.

10.0.2.1

B.

10.0.2.2

C.

10.16.10.1

D.

10.16.10.3

Question 17

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 18

Which of the following about VPN labels is FALSE?

Options:

A.

They are signaled between PE devices using MP-BGP.

B.

They are swapped at each P router as a packet crosses the service provider network.

C.

They are also known as the inner label or service label.

D.

They indicate to the egress PE the VPRN to which a packet belongs.

Question 19

How does a DMP inform the downstream routers that it has merged detour tunnels?

Options:

A.

The DMP sends the DMP_Object in each detour's PATH messages.

B.

The DMP summarizes PATH messages, giving each detour its own MSGJD.

C.

The DMP identifies itself as the previous hop in each detour's PATH message.

D.

The DMP sends a single PATH message containing the merged DETOUR_Objects.

Question 20

Which of the following about CSPF is TRUE?

Options:

A.

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

B.

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

C.

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

D.

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

Question 21

What are the types of networks supported on an Nokia 7750 SR for OSPF? (Choose 2)

Options:

A.

Broadcast

B.

Non-Broadcast Multi-Access

C.

Point-to-Point

D.

Point-to-Multipoint

Question 22

What is the result of configuring the following policy statement as a BGP import policy on the Nokia 7750 SR?

Options:

A.

All BGP routes are accepted.

B.

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

C.

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

D.

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

Question 23

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

Question 24

Which of the following about SAPs is TRUE?

Options:

A.

More than one SAP can be configured on a physical port that is configured for null encapsulation.

B.

Dot1Q Ethernet encapsulated access ports can support multiple SAPs and services.

C.

SAPs can be created on ports designated as "Network".

D.

SAPs can only be created on Ethernet ports.

Question 25

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 26

What is the function of the Cluster_List attribute?

Options:

A.

It is used for loop detection within the same cluster.

B.

It is used for loop detection between clusters.

C.

It is used for loop detection in a confederation.

D.

It is used to identify the route reflectors within an AS.

Question 27

Click the exhibit.

Over which BGP session will router B learn the 10.1.1.0/24 prefix?

Options:

A.

The session between router A and router B.

B.

The session between router C and router B.

C.

The session between router D and router B.

D.

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

Question 28

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 29

Which of the following fields does NOT appear in the MPLS label header?

Options:

A.

Label

B.

Frame check sequence

C.

Traffic Class (previously called Experimental)

D.

Time To live

E.

Bottom of stack bit

Question 30

An SDP using GRE encapsulation is configured for an E-pipe service. The network port used by the SDP has an MTU of 8000. What value does the SDP path MTU have by default on an Nokia 7750 SR?

Options:

A.

7958

B.

7978

C.

8022

D.

8042

Question 31

An OSPF ASBR must have at least one interface in the backbone area (area 0)

Options:

A.

True

B.

False

Question 32

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 33

The configuration of an Nokia 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?

Options:

A.

Router R1forms an iBGP session with router R2, and an eBGP session with router R3.

B.

Router R1forms iBGP sessions with routers R2 and R3.

C.

Router R1forms eBGP sessions with routers R2 and R3.

D.

The types of BGP sessions with routers R2 and R3 cannot be determined.

Question 34

A confederated AS is comprised of three members. One member is comprised of 4 routers, while the other two members are comprised of 3 routers each. Assuming member ASs are fully meshed and use full mesh iBGP, what is the required number of BGP sessions within the confederation?

Options:

A.

12

B.

13

C.

14

D.

15

Question 35

Which of the following types of networks are supported on an Nokia 7750 SR for OSPF? Choose two answers.

Options:

A.

Broadcast

B.

Non-broadcast multi-access

C.

Point-to-point

D.

Point-to-multipoint

Question 36

When are virtual links used in OSPF?

Options:

A.

When two areas need to communicate and there is no area 0.

B.

When an area needs to traverse another area to reach area 0.

C.

When two areas are connected to area 0, but there is no direct path between them.

D.

When an area needs to connect directly to another area without using area 0.

Question 37

Which of the LSA types stay within an OSPF area and are not exported outside of the area? (Choose all that apply)

Options:

A.

Router LSA

B.

Network LSA

C.

Summary Network LSA

D.

Summary Router LSA

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

Click on the exhibit.

This policy is applied on a router as an LDP export policy and an LDP session has been established between this router and its neighboring router. In addition to the FECs learned from its neighbors, what additional FECs will appear in this router's LIB?

Options:

A.

All FECs that are in the 192.168.1.0/24 address space.

B.

Local FECs that are in the 192.168.1.0/24 address space.

C.

All FECs that are not in the 192.168.1.0/24 address space.

D.

All FECs except the local FECs that are in the 192.168.1.0/24 address space.

Question 40

When an OSPF adjacency is stuck in the "ExchStart" state, what is the most likely cause?

Options:

A.

The MTU does not match on both interfaces

B.

OSPF is not enabled on one of the routers

C.

The Router ID is the same on both routers

D.

A OSPF Hello has not been received from the neighbor

Question 41

Which of the following routes is NOT considered an internal route?

Options:

A.

A route received from a BGP peer within the same AS.

B.

A route originated by a router in a different cluster of the same AS.

C.

A route received from a BGP peer from a different member AS of a confederation.

D.

A route received from a BGP peer from the same member AS of a confederation.

Question 42

Click the exhibit.

Which of the following statements about the E-pipe service is TRUE?

Options:

A.

The service is a local service.

B.

The service requires a second spoke SDP on this router.

C.

The service's VC ID is 44.

D.

The service will accept VLAN tag 100.

Question 43

By default, how does a VPLS handle a tagged frame received at the ingress of a null SAP on an Nokia 7750 SR?

Options:

A.

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

B.

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

C.

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

D.

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

Question 44

Which of the following about an ERO in an RSVP PATH message is FALSE?

Options:

A.

ERO is used by downstream routers to determine the next-hop for the LSP.

B.

ERO contains label information used to signal an LSP path.

C.

ERO is not always present in the PATH message.

D.

Each downstream router updates information inside the ERO.

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Total 298 questions