Ways to Pass Nokia 4A0-C04 Exam with a Single Shot

test2022-01-26T08:14:08+00:00

The NRS II Composite Exam: OSPF version combines content from the four individual exams required for NRS II certification into a single, integrated exam.The four individual exams are:
Nokia OSPF Routing Protocol (4A0-113)
Nokia Border Gateway Protocol Fundamentals for Services (4A0-114)
Nokia Multiprotocol Label Switching (4A0-103)
Nokia Services Architecture (4A0-104)

It is best to challenge and develop your knowledge in order to pass the Nokia 4A0-C04 test. We recommend practicing with Nokia 4A0-C04 Practice Exam to test your knowledge and identify areas for development in an actual exam environment. You can use the following 4A0-C04 practice questions to determine your level of preparation.

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1. Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Prefixes advertised by router R2 have a local preference of 200. Router R1 advertises the prefix 192.168.1.0/27 to routers R2 and R3.

Assuming that router R3 is configured with "advertise-external", what is the expected output of "show router bgp routes" when executed on router R4?

Option A

Option B

Option C

Option D

2. Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF.

Assuming that there are no stub networks, which of the following statements regarding type 4 LSA generation is true?

Router R1 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a type 4 LSA that is flooded to areas 0 and 2.

Router R3 generates a type 4 LSA that is flooded to area 0, and router R6 generates a type 4 LSA that is flooded to area 2.

3. Which of the following concerning OSPFv3 is TRUE?

OSPFv3 uses MD5 Authentication.

Router LSAs carry IPv6 prefix information.

NSSA is supported in OSPFv3.

OSPFv3 uses a 64-bit router I

4. Which of the following statements regarding BGP Fast Reroute is FALSE?

BGP Fast Reroute is triggered by IGP events.

The backup path is pre-computed and installed in the FI

BGP Fast Reroute is independent of number of affected prefixes.

BGP Fast Reroute uses the optimal path to the destination.

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

They are multicast to the All Hosts address.

They are broadcast to the subnet broadcast address.

They are multicast to the All Routers address.

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

6. What class of attribute is Originator_ID?

Well-known mandatory.

Well-known discretionary.

Optional transitive.

Optional non-transitive.

7. Click the exhibit.

AS 65100 is advertising 192.168.1.0/27 into BGP .

Which of the following AS Paths would the prefix 192.168.1.0/27 contain when viewed on router R8?

65200 (65206 65202) 65100

(65206 65202)65100

65250 (65206 65202) 65100

65200 65100

8. Which of the following statements regarding OSPF routing updates on a point-to-point link is true?

On a point-to-point link, there is no need for a DR and BDR election; all routing updates are sent to 224.0.0.5.

On a point-to-point link, a DR and BDR are elected. The DR sends link-state advertisements describing the network.

On a point-to-point link, a DR and BDR are elected. To ensure resiliency, both the DR and BDR send link-state advertisements describing the network.

On a point-to-point link, there is no need for a DR and BDR election. All routing updates are sent to the unicast address of the neighbor's interface.

9. Click the exhibit.

AS 65540 routers are iBGP fully-meshed. Assume routers R4, R5 and R6 are configured with add paths ipv4 send 2 receive" .

Which routes to 192.168.0.1/27 is router R6 expected to have in its BGP routing table?

Two routes from router R4.

Two routes from router R5.

Two routes; one from router R4 and one from router R5.

Four routes; two from router R4 and two from router R5.

10. Click on the exhibit.

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

The Standby with the highest next-hop I

The first Standby in the list.

The Standby with the longest uptime.

The Standby with the lowest next-hop I

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

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.

12. Which of the following about VPN labels is FALSE?

They are signaled between PE devices using MP-BG

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

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

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

13. Click the exhibit button.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. Assuming that there are no stub networks, which of the following statements regarding Type 4 LSA generation is true?

Router R1 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a Type 4 LSA that is flooded to areas 0, 1, and 2.

Router R3 generates a Type 4 LSA that is flooded to areas 0 and 2.

Router R3 generates a Type 4 LSA that is flooded to area 0, and router R6 generates a Type 4 LSA that is flooded to area 2.

14. 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?

"ping 192.168.20.1"

"oam vprn-ping 100 source 192.168.10.1 destination 192.168.20.1"

"oam vprn-ping 100 source 192.168.20.1 destination 192.168.10.1"

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

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

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

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

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

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

16. Which of the following statements regarding area border routers in an OSPF network is true?

The term backbone router has the same definition as the term area border router.

An OSPF network needs at least one area border router to function.

Area border routers connect the backbone area to other areas in an OSPF network.

By definition, an area border router must perform route summarization between areas.

17. An IS-IS TE enabled router has an interface on a 500Mbps link and it is configured with a 25% subscription.

If this interface is not used by any LSPs. what value will be shown in the Reservable Bandwidth sub-TLV?

125 Mbps

500 Mbps

625 Mbps

2000 Mbps

18. 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?

Both neighbors R1and R2 should be part of AS 65540.

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

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

Both neighbors R1and R2 should be part of AS 65560.

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

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

Access-lists denoting what is to be advertised

Default metrics for each link

A group and neighbor statement for each peer

20. Which of the following prefix lists include prefixes 192.168.128.0/17 and 192.168.64.0/18?

Prefix list 192.168.0.0/16 through 18.

Prefix 192.168.0.0/17 longer.

Prefix list 192.168.0.0/17 through 18.

Prefix 192.160.0.0/13 longer.

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

The peer with the higher physical address.

The peer with the higher transport address.

The peer with the lower physical address.

The peer with the lower transport address.

The peer that generated the first Hello message.

22. If OSPF is used in a multi-area OSPF network, which of the following statements regarding route summarization is true?

Manual route summarization can only be done on autonomous system border routers.

Manual route summarization must be done on all the backbone routers to be effective. Manual route summarization is optional on the routers in non-backbone areas.

Manual route summarization is done on the ABRs. By default, automatic summarization is done; however, it may not be optimal for all networks.

Manual route summarization is done on the ABRs. By default, no route summarization is done and all routes are advertised to all areas.

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

ISIS, RIP, OSPF, static routes

BGP, ISIS, RIP, OSPF, static routes

BGP, RIP, OSPF, static routes, OSPF3

ISIS, RIP, OSPF, static routes, OSPF3

24. Which of the following cannot be used as a matching criterion in route policy statements?

Source IP address

TCP source port

Prefix list

Protocol type

25. An autonomous system has 7 routers configured with BGP .

How many iBGP sessions are required for a fully meshed configuration?

26. Click the exhibit.

Router R1 is a route reflector with clients R2, R5 and R6. Prefixes advertised by router R5 have a local preference of 200. Router R3 advertises the prefix 192.168.1.0/27 to routers R5 and R6.

Assuming that none of the routers in AS 65540 is configured with "advertise-external", what is the expected output of "show router bgp routes" on router R5?

Option A

Option B

Option C

Option D

27. An E-pipe is configured with a service MTU of 5000 .

What is the minimum MTU value that should be set on an access port for a dot1q encapsulated SAP on this service?

5000

5004

5008

5014

28. 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?

29. Click on the exhibit.

Which of the following is FALSE?

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

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

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

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

30. 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?

Send a PATH Tear message toward router R6.

Send a PATH Tear message toward router R1.

Send a PATH Error message toward router R6.

Send a PATH Error message toward router R1.

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31. Which of the following about ADSPEC is FALSE?

ADSPEC sets an SDP's MTU to the smallest MTU value found along the LSP path.

RSVP must be enabled on all MPLS routers of a path to use ADSPE

ADSPEC can automatically adjust the service MT

ADSPEC can be enabled on individual LSPs.

32. 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?

Router RA prefers the update received from router RR1.

Router RA prefers the update received from router RR2.

Router RA flags both updates as invalid.

Router RA accepts both updates and flags them as used.

33. On which object is ADSPEC enabled?

SDP

Network port

LSP

Service

RSVP

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

Broadcast

Non-Broadcast Multi-Access

Point-to-Point

Point-to-Multipoint

35. Click the exhibit.

Assume all router-IDs are properly configured, and global IPv6 addresses are used to establish eBGP sessions .

Which of the following configurations is required on router A so that router B can exchange traffic with router D?

Option A

Option B

Option C

Option D

36. Click on the exhibit.

In the topology shown, router R1 is an ASBR configured to export external routes to OSPF. There are no stub or NSSA areas .

Which of the following regarding LSAs is TRUE?

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.

37. Click on the exhibit.

The LSP "toR6" is configured with a fully strict path on an Nokia 7750 SR .

Which of the following configurations is required to enable fast reroute for this LSP?

Enable fast-reroute on all routers along the path. R1, R2, R4, and R6.

Enable both link-protection and node-protection on router R1.

Enable fast-reroute with either one-to-one or facility mode on this LS

Enable link-protection only on router R4.

38. 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?

Three primary paths,

Two primary paths and one backup path.

One primary path and two backup paths.

One primary path and one backup path.

39. Click the exhibit button.

Part of a 6VPE deployment is shown .

Which of the following is the correct configuration and context on router CE1 for a BGP peering session with 6VPE1?

Option A

Option B

Option C

Option D

40. When are virtual links used in OSPF?

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

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

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

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

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41. Which of the following is NOT a characteristic of MPLS?

It provides the ability to establish connection-oriented paths over a connectionless IP network.

It provides a mechanism to engineer network traffic patterns independently of IP routing tables.

It will work over most physical layer protocols.

It can use GRE tunnels to transport data from many different protocols over an IP network.

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

Not so stubby area

Stub area

Backbone area

Normal area

43. What causes an adjacency to change from "Init" to "Two Way"?

When a Link State Update is received in response to a Link State Request

When a router receives a Hello packet from a neighbor that contains its router id in the neighbor list

When OSPF neighbors exchange Database Descriptor packets

When a Link State Acknowledgement is received in response to a Link State Update

44. What is the source IP address in an OSPF update?

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.

45. What Nokia 7750 SR OAM tool can be used to verify the end-to-end connectivity of a service?

Sdp-ping

Isp-ping

Svc-ping

Sdp-mtu

46. Which MPLS mode saves only active label mappings received from peer LSRs?

Conservative label retention

Liberal label retention

Downstream on demand

Downstream unsolicited

47. A static route is created using the command "static-route 0.0.0.0/0 next-hop 3.3.3.1" .

What command could be used to test the static route on an Nokia 7750 SR?

Ping static 3.3.3.1

Ping static 0.0.0.0/0

Ping 3.3.3.1

Ping 0.0.0.0

48. What is the source IP address in an OSPF update?

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

49. Which of the following statements describe the major features of OSPF? Choose two answers.

Fast reroute capability

Control traffic prioritization

Route redistribution

Traffic engineering extensions

Cut through forwarding

50. What is the function of the Cluster_List attribute?

It is used for loop detection within the same cluster.

It is used for loop detection between clusters.

It is used for loop detection in a confederation.

It is used to identify the route reflectors within an A

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

Broadcast

Non-broadcast multi-access

Point-to-point

Point-to-multipoint

52. Which of the following is NOT a characteristic of RIPv1?:

30 second network updates

Classless routing

Broadcast advertisement

Poison Reverse

53. Click the exhibit.

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

The session between router A and router

The session between router C and router

The session between router D and router

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

54. Click the exhibit button.

Given the topology and the show commands, and assuming that router R2 advertises all of its loopbacks into OSPF, what is the correct router R1 configuration?

Option A

Option B

Option C

Option D

55. 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?

AS Path of 65200 65100, Next Hop of router

AS Path of 65100, Next Hop of router

56. Which of the following about LDP sessions is TRUE?

Frame mode requires multiple sessions between peers.

The lower transport address initiates the session.

Established LDP sessions run over a TCP connection.

An LDP session is established immediately after Init messages are exchanged between peers.

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

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

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

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

"client1" routes will be rejected.

58. 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?

59. Which of the following about label modes on the Nokia 7750 SR is FALSE?

RSVP uses downstream on demand label distribution mode.

LDP uses conservative label retention mode.

LDP advertises label mappings to all peers for which it might be a next-hop for a given FE

RSVP distributes a label mapping for a FEC when it has been requested to do so.

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

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

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

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

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

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

Incoming label

Outgoing label

Incoming interface

Outgoing interface

62. Which of the following about transport and service tunnels is FALSE?

Service tunnels are unidirectional.

Transport tunnels are unidirectional.

A service will use the same service label for every hop.

A local service requires a transport tunnel.

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

Router LSA

Network LSA

Summary Network LSA

Summary Router LSA

64. Click on the exhibit.

If the primary path goes down, which secondary LSP path will the head-end router select first?

Secondary_Path-1

Secondary_Path-2

Secondary_Path-3

Secondary_Path-4

65. What causes an adjacency to change from down to two ways?

When a link state update is received in response to a link state request.

When a router receives a Hello packet that contains its own router ID in the neighbor list from a neighbor.

When a router receives a database description packet from a neighbor.

When a link state acknowledgement is received in response to a link state update.

66. Which MPLS label mode propagates a label mapping only for the FEC for which a router has a label mapping for the FEC's next-hop?

Independent control mode

Ordered control mode

Liberal label retention mode

Conservative label retention mode

Downstream on demand label distribution mode

67. Which routing protocol cannot be run over an Ipipe?

OSPF

RIP

BGP

IS-IS

68. A VPLS receives a frame with the single VLAN tag 35 on the Q-in-Q SAP 1/1/1:35.* .

Which of the following describes default Nokia 7750 SR behavior?

The frame is dropped.

The VLAN tag is removed, and the frame is transported over the network.

The VLAN tag is kept, and the frame is transported over the network.

The VLAN tag is kept, a VLAN of 0 is added, and the frame is transported over the network.

69. 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?

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.

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

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

ERO contains label information used to signal an LSP path.

ERO is not always present in the PATH message.

Each downstream router updates information inside the ER

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71. What is the default preference value for a static route in the Nokia 7750 SR?

72. On an Nokia 7750 SR, which vc-type will strip service delimiting tags at the ingress PE?

vc-type ether

vc-type vlan

vc-type dotlq

vc-type null

73. Click the exhibit button.

The following command sequence is executed on router R2:

✑ A: R2# configure router ospf router-id 10.10.10.99

✑ A: R2# configure router router-id 10.10.10.66

On router R1, what router ID appears for router R2 directly after these commands are executed?

10.10.10.99

10.10.10.66

10.10.10.2

10.10.10.1

74. Click the exhibit button.

Which of the following would correctly configure routers R2, R3, and R4?

Option A

Option B

Option C

Option D