[2022] Free 4A0-C02 Exam Dumps to Pass Exam Easily [Q131-Q153]

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[2022] Free 4A0-C02 Exam Dumps to Pass Exam Easily

4A0-C02 Exam Dumps, 4A0-C02 Practice Test Questions


Nokia 4A0-C02 Exam Syllabus Topics:

TopicDetails
Topic 1
  • Describe the operation of the basic VPRN architecture
  • Explain the interaction between BGP and interior gatewayprotocol (IGP)
Topic 2
  • 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 3
  • Implement loop prevention in VPRN using multiple techniques
  • Describe the use of active and standby pseudowires to achieve redundancy instead of STP
Topic 4
  • Understand the operation of Inter-AS VPRN model A, model B and model C
  • Describe the effect of using advertise-external feature on BGP route propagation
Topic 5
  • 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 6
  • Configure and verify BGP advertise-external, add-paths, and FRR on Nokia SR
  • Describe the operation of BGP fast reroute
Topic 7
  • Implement loop control mechanisms such as rapid spanning tree in a VPLS environment
  • Describe the role of BGP in service provider networks
Topic 8
  • Describe the operation of providing Internet access using various techniques
  • Demonstrate a sound understanding of BGP mechanics and the role of BGP attributes
Topic 9
  • Describe the operation of advanced VPRN topologies and services
  • Verify and troubleshoot the results of the policies configurations

 

NEW QUESTION 131
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 R1?

  • A. Option C
  • B. Option B
  • C. Option D
  • D. Option A

Answer: A

 

NEW QUESTION 132
What is the maximum number of VLANs supported on a traditional Layer 2 switch?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: A

 

NEW QUESTION 133
AS 65540 is using MPLS to provide BGP shortcuts for its iBGP routing. AS 65541 is advertising prefix 192.168.1.0/27 into BGP. Which routers have the BGP update for the advertised prefix in their BGP table?

  • A. Routers R1, R4 and R5 only.
  • B. Routers R1, R2, R3 and R4 only.
  • C. Routers R1, R2, R3, R4 and R5.
  • D. Routers R1and R4 only.

Answer: A

 

NEW QUESTION 134
Which of the following about self-generated traffic QoS is TRUE?

  • A. DSCP bits can be set per application, per routing instance.
  • B. The DSCP marking stays ncl for all applications; only the internal forwarding class is manipulated across different applications.
  • C. Self-generated traffic can be marked at Layer 2 no matter what encapsulation is used on the network interfaces.
  • D. The internal forwarding class for self-generated traffic is set once and applied to the base router and all VPRN instances.

Answer: D

 

NEW QUESTION 135
In IEEE 802.1ag, which two key functions are configured on bridge ports (SAPs and SDPs) to support CFM messages? (Choose 2)

  • A. MUP
  • B. MIP
  • C. MAP
  • D. MEP

Answer: B,D

 

NEW QUESTION 136
Click the exhibit button below. Given the SAP-ingress policy, which of the following statements are TRUE? (Choose three)

  • A. All AF traffic will be marked "in-profile" at the SAP-ingress.
  • B. All TCP traffic will be mapped to forwarding class EF
  • C. Traffic that does not match any of the IP criteria will be placed in queue 3.
  • D. UDP traffic is placed in queue 3 while ICMP traffic is placed in queue 5.
  • E. EF traffic will receive higher scheduling priority than H2 traffic.

Answer: A,C,E

 

NEW QUESTION 137
Why is it best practice to set the bridge priority in an STP network? (Choose 2)

  • A. So that you know which links will be active in your network.
  • B. To allow all ports on the root switch to become alternate ports.
  • C. This is not a best practice. Any switch can be used as the root bridge.
  • D. To prevent a new switch from becoming root when added to the network.

Answer: A,D

 

NEW QUESTION 138
Click the exhibit.

Assuming that the as-override command is used, what is the most likely location of prefix 10.1.2.0/24?

  • A. There are two Autonomous Systems between the local AS and the AS that originated the prefix.
  • B. There is a single Autonomous System between the local AS and the AS that originated the prefix.
  • C. The prefix is located in an Autonomous System directly connected to this router.
  • D. The prefix is located in Autonomous System 65100.

Answer: B

 

NEW QUESTION 139
Click the exhibit.

For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?

  • A. 0
  • B. 1
  • C. 2
  • D. 3

Answer: D

 

NEW QUESTION 140
When a PE node receives a PBB encapsulated frame on a B-VPLS, how does the PE determine which l-VPLS it belongs to?

  • A. The l-TAG in the l-SID is inspected to determine where the frame should be delivered.
  • B. The PE inspects the service label in the MPLS header before stripping the B-MAC header.
  • C. The l-SID in the l-TAG is inspected to determine where the frame should be delivered.
  • D. When the B-MAC header is stripped the customer MAC address is then looked up in the FDB

Answer: C

 

NEW QUESTION 141
Redundant spoke-SDPs are used between 2 Metro networks for redundancy. How can load balancing be achieved across the redundant spoke-SDPs?

  • A. Two management VPLS using RSTP can be used to block different SDPs for different VPLS services.
  • B. A single management VPLS using 802.1D-2004 can be used to block different SDPs for different VPLS services
  • C. A single management VPLS using RSTP can be used to block different SDPs for different VPLS services.
  • D. There is no way to have load balancing across redundant spoke-SDPs.

Answer: A

 

NEW QUESTION 142
How are local CE routes associated with the appropriate VRF at the PE?

  • A. Based on the Route Target.
  • B. Based on the Route Distinguisher.
  • C. Based on the Service Identifier.
  • D. Based on the interface on which they are received.

Answer: D

 

NEW QUESTION 143
If the max remote-age timer of a B-VPLS is reached, what happens to the remotely learned MAC addresses in the l-VPLS service?

  • A. By default, the remote-age timer of the B-VPLS is configured to 0 and addresses do not age out. The l-VPLS uses its own timer.
  • B. The same timer is used for B-VPLS and l-VPLS addresses on the node.
  • C. The MAC addresses for the l-VPLS will age out immediately following the remote-age out of the backbone-macs of the B-VPLS.
  • D. There is no effect. The MAC addresses for the l-VPLS age out independently of the aging of B-VPLS addresses.

Answer: C

 

NEW QUESTION 144
Click the exhibit.

When configuring a VPRN service on an Alcatel-Lucent 7750 SR, where should the policy be applied?

  • A. On the PE under the OSPF context
  • B. On the CE under the BGP context
  • C. On the CE under the OSPF context
  • D. On the PE under the BGP context
  • E. This policy is not required.

Answer: E

 

NEW QUESTION 145
Five VPLS services have been configured between two PE routers. What is the minimum amount of SDPs that must be configured?

  • A. 10-five in each direction.
  • B. None of the above.
  • C. 5-one for each service.
  • D. 2-one in each direction.

Answer: D

 

NEW QUESTION 146
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 R7?

  • A. (65200) 65100
  • B. (65204 65206 65202) 65100
  • C. 65206 65202 65100
  • D. (65206 65202)65100

Answer: D

 

NEW QUESTION 147
Click the exhibit.

Which of the following statements best describes the BGP sessions within the given network?

  • A. The session between AS 65202 and AS 65206 is an iBGP session.
  • B. The session between AS 65204 and AS 65206 is an intra-confederation eBGP session.
  • C. The BGP sessions within the member ASs are known as inter-confederation BGP sessions.
  • D. A BGP session is required between AS 65202 and AS 65204.

Answer: B

 

NEW QUESTION 148
How many designated ports are there in a spanning tree topology?

  • A. 1 per switch
  • B. 1 per segment
  • C. The same as the number of alternate ports in the topology
  • D. The same as the number of root ports

Answer: B

 

NEW QUESTION 149
Click the exhibit.

For the PE hub and spoke VPRN, on which PE(s) should the VPRN service command target export target: 65100:1 import target: 65100: 2 " be configured?

  • A. PE1
  • B. PE2, PE3 and PE4
  • C. PE1, PE2, PE3 and PE4
  • D. This command is not required for the configuration of this PE hub and spoke VPRN.

Answer: A

 

NEW QUESTION 150
What command is required to configure the PE devices for a VPRN service on an Alcatel-Lucent 7750 SR?

  • A. Family vprn-ipv4
  • B. Family vpn-ipv4
  • C. Address-family vprn
  • D. Address-family vprn-ipv4
  • E. Address-family vpn-ipv4
  • F. Family vprn

Answer: B

 

NEW QUESTION 151
Forwarding subclasses are only relevant to, and are therefore applied within the context of, a _____________policy.

  • A. SAP-ingress
  • B. network
  • C. slope
  • D. scheduling
  • E. network-queue

Answer: A

 

NEW QUESTION 152
Why is MAC explosion a factor to be considered when designing a large VPLS network? (Choose 2)

  • A. It could take several seconds to relearn thousands of MAC addresses denying QoS/SLA guarantees.
  • B. The time to relearn thousands of MAC addresses may result in excessive flooding or loss of packets.
  • C. If the FDB reaches the limit, the router will discard frames.
  • D. Discarding frames when the FDB limit is reached could deny SLA guarantees.

Answer: A,B

 

NEW QUESTION 153
......

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