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Nokia 4A0-C02 Exam Syllabus Topics:

Topic	Details
Topic 1	Define management VPLS (M-VPLS) and how it can be used with STP to provide redundancy and load balancing Explain BGP add-paths feature
Topic 2	Configure and verify BGP advertise-external, add-paths, and FRR on Nokia SR Describe the operation of BGP fast reroute
Topic 3	Explain the key scalability concerns in large VPLS deployments Manage a VPLS infrastructure, and troubleshoot and repair a misconfigured VPLS
Topic 4	Implement loop control mechanisms such as rapid spanning tree in a VPLS environment Describe the role of BGP in service provider networks
Topic 5	Explain the concept of a hierarchical VPLS and its benefits for large VPLS networks Describe the advantages of a VPLS and configure a VPLS service
Topic 6	Describe the operation of advanced VPRN topologies and services Verify and troubleshoot the results of the policies configurations
Topic 7	Describe the basic Internet Architecture and related elements Scale iBGP by deploying confederations or route reflections
Topic 8	Describe the operation of the basic VPRN architecture Explain the interaction between BGP and interior gatewayprotocol (IGP)

NO.228 The configuration of an Alcatel-Lucent 7750 SR is given below. Router Rl has established BGP sessions with routers R2 and R3. Which of the following is TRUE?

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

Router R1forms iBGP sessions with routers R2 and R3.

Router R1forms eBGP sessions with routers R2 and R3.

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

NO.229 When ports configured with IEEE 802.3ah EFM are operationally down, what must the device do before declaring the ports are up?

The device will try to force the other side up using the evaluating flag in the PDU.

The device will wait for the trasmit-interval of 5 before trying to rediscover the neighbor.

The device will detect the port change and will wait for normal operation mode.

The device will detect the port change and revert to discovery mode.

NO.230 Which of the following statements regarding BGP Add-Paths is FALSE?

Add-Paths allows non-best paths to be advertised to a peer.

Add-Paths capabilities are exchanged between peers after the BGP session is established.

A BGP speaker must advertise the capability to receive multiple paths from its peer.

A BGP speaker must advertise the capability to send multiple paths to its peer.

NO.231 Click the exhibit.

For the inter-AS model B VPRN, which of the following is the correct BGP configuration on ASBR1?

Option A

Option B

Option C

Option D

NO.232 What is the MTU impact on the SDP path-mtu if fast reroute, one-to-one mode is implemented on the LSP?

There will be no impact on the path-mtu.

The path-mtu will decrease by4 bytes.

The path-mtu will increase by 4 bytes.

The path-mtu will decrease by 8 bytes.

The path-mtu will increase by 8 bytes.

NO.233 A queue is configured with the following attributes:
MBS = 10KB
CBS = 5KB
High-Priority-Only = 30%
Assume that there is no CBS overbooking and that the slope-policy is disabled. If the current queue depth is 8KB, what will happen to an in-profile packet arriving in the queue?

It will be discarded because the high-priority-only threshold is exceeded.

It will be queued but re-marked as “out-of-profile.”

It will be queued in the reserved portion of the buffer pool and remain “in-profile.”

It will be queued in the shared portion of the buffer pool but contend for shared buffer space with packets from other queues.

It will be queued in the shared portion of the buffer pool but may be dropped if the buffer utilization exceeds the start-average value of the low slope.

NO.234 In a provider core consisting of 6 PE and 4 P routers, what is the minimum number of BGP sessions required in total for correct operation of VPRN services?

NO.235 Click on the exhibit below.

Which ports will become root ports? (Choose 3)

Bridge B 1/1/3

Bridge B 1/1/2

Bridge C 1/1/2

Bridge C 2/1/1

Bridge D 1/1/1

Bridge D 1/1/3

Bridge E 1/1/1

Bridge E 1/1/3

NO.236 A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

PE1 pushes an LDP transport label.

CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.

CSC-PE2 pops the MPLS transport label and pushes a BGP label.

CSC-CE2 pops the BGP label and pushes an LDP transport label.

NO.237 .
A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier offering VPRN services. Which of the following about this configuration is FALSE?

In the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the “advertise-label vpn-ipv4” CLI command to enable the advertisement of VPN-IPv4 routes.

When the customer carrier uses the same autonomous system number in various sites, use the “loop-detect off” CLI command to disable the loop detection functionality on CSC-CE and PE routers.

On the CSC-PE routers, use the “carrier-carrier-vpn” CLI command to configure the VPRN service as CSC.

Configure an iBGP session between PE1 and PE2 and use the “family vpn-ipv4” CLI command to directly exchange end-customer routes learned from CE1 and CE2.

NO.238 Consider two Alcatel-Lucent 7750 SRs in AS 65540. Router R1 has system address 10.10.10.1, and router R2 has system address 10.10.10.2. Which of the following configurations on router R2 can establish a BGP session with router R1?

Option A

Option B

Option C

Option D

NO.239 Which of the following describes the overhead added to a customer frame on an Ethernet link in a VPLS service on the Alcatel-Lucent 7750 SR?

The overhead consists of 26 bytes. 14 DLC + 2 Ethertype + 8 for mpls labels + 2 for GRE

The overhead consists of 14 bytes for DLC

The overhead consists of 18 bytes. 14 DLC +4 for mpls labels

The overhead consists of 22 bytes. 14 DLC + 8 for mpls labels

NO.240 Click the exhibit.

Which of the following can be used by router R4 in AS 65542 to reject all routes originating in AS 65540?

An import policy that rejects updates with an AS Path matching the regular expression “.+ 65540 .+”.

An import policy that rejects updates with an AS Path matching the regular expression “.+ 65540”.

An import policy that rejects updates with an AS Path matching the regular expression “65540 .+”.

An import policy that rejects updates with an AS Path matching the regular expression “65540”.

NO.241 Click the exhibit.

The AS-override method is used to prevent BGP loops in the blue customer VPRN. Which statement about the configuration is TRUE?

the configuration is complete and correct.

‘as-override’ should be configured under the BGP context.

‘as-override’ should be configured under the group context.

‘as-override’ should not be part of this configuration.

NO.242 Assuming there is a full mesh of mesh-SDPs between the PEs within each metro network and a spoke-SDP between PE-C of Metro A and PE-B of Metro B. how is traffic forwarded from PE-A in Metro A to PE-D of Metro B? Select the most accurate statement.

An LSP must be configured between PE-A and PE-D for this traffic to be forwarded.

A VPLS FDB lookup is done at PE-A of Metro A only

An SDP must be configured between PE-A of Metro A and PE-D of Metro D for this traffic to be forwarded

A VPLS FDB lookup is done at PE-A and PE-C of Metro A and PE-B of Metro B

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