Nokia Nokia Certifications 4A0-104 Questions & Answers

• Question 241:

  Which of the following is NOT a benefit of "Hub and Spoke'' VPLS deployments?

  A. They reduce the number of SDPs that need to be configured.

  B. They can be used to work around physical topologies that prevent a fully meshed deployment.

  C. They prevent loops that can be introduced by mesh deployments.

  D. They can simplify the implementation of security policy enforcement and packet inspection.

  Correct Answer: C

• Question 242:

  Click the exhibit.

  

  This is output from router R4. Service 333 is a VPLS. Why does peer 10.10.10.1 not have an EgrLbl?

  A. The SDP to 10.10.10.1 on router R4 is shutdown.

  B. Router R4 has not sent a label to router R1 (10.10.10.1) yet.

  C. 10.10.10.1 has a different service MTU set.

  D. 10.10.10.1 has not sent a label to router R4 yet.

  Correct Answer: D

• Question 243:

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

  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.

  Correct Answer: C

• Question 244:

  Which of the following about VPLS MAC learning is FALSE?

  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.

  Correct Answer: D

• Question 245:

  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?

  A. 5000

  B. 5004

  C. 5008

  D. 5014

  Correct Answer: B

• Question 246:

  Which of the following about SAPs is TRUE?

  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.

  Correct Answer: B

• Question 247:

  Which of the following statements about SAPs that are part of a VPWS is FALSE?

  A. SAPs can be defined on Ethernet, POS, Sonet/SDH, or TDM channels.

  B. Only one SAP is required for a service that originates and terminates on the same Nokia 7750 SR.

  C. SAPs can have QoS policies assigned to them.

  D. Multiple SAPs can be defined on the same port.

  Correct Answer: B

• Question 248:

  In a Layer 2 encapsulation using T-LDP, what does the second (bottom) label represent?

  A. Tunnel Label

  B. VC Label

  C. Operational Control Word

  D. VPI

  E. VCI

  Correct Answer: B

• Question 249:

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

  A. Service tunnels are unidirectional.

  B. Transport tunnels are unidirectional.

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

  D. A local service requires a transport tunnel.

  Correct Answer: D

• Question 250:

  Click the exhibit.

  

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

  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.

  Correct Answer: C