Nokia Nokia Certifications 4A0-104 Questions & Answers

• Question 101:

  Which of the following about dot1Q SAPs is FALSE?

  A. The dot1Q default SAP (port: *) can be used to pass VLAN tags transparently through a network.

  B. The dot1Q null SAP (port: 0) accepts all tagged frames and untagged frames.

  C. The dot1Q default SAP (port: *) accepts all untagged frames and any frames with tag values that are not used as a service-delimiting value on another SAP.

  D. A dot1q null SAP (port: 0) and a dot1q default SAP (port: *) cannot both be defined on the same port.

  Correct Answer: B

• Question 102:

  Which of the following fields is NOT present in a GRE encapsulated VPN service packet?

  A. DLC Header

  B. Control Word

  C. Transport Label

  D. Service Label

  Correct Answer: C

• Question 103:

  Which of the following about SDPs is TRUE?

  A. SDP IDs must be locally unique.

  B. SDPs are specific to one service type.

  C. SDPs must use MPLS for their encapsulation.

  D. An SDP is required for a local service.

  Correct Answer: A

• Question 104:

  Which of the following is TRUE when a service uses a GRE transport tunnel?

  A. The service takes a route determined by the IGP.

  B. The tunnel does not use a service label.

  C. The service label is swapped at each hop in the transport network.

  D. The tunnel is bidirectional and only requires configuration at one end of the service.

  Correct Answer: A

• Question 105:

  Which of the following about VPRN VRF tables is FALSE?

  A. VRF information is advertised between PEs using MP-BGP.

  B. VRF tables are used to forward traffic to CEs.

  C. P routers use VRF tables to maintain customer-specific information.

  D. VRF tables provide isolation between customers.

  Correct Answer: C

• Question 106:

  Which protocol can be used to signal the outer label for a VPN service?

  A. IPCP

  B. LDP

  C. PPP

  D. TLDP

  Correct Answer: B

• Question 107:

  Click the exhibit.

  

  The output is from PE router R1 about VPRN service 100. From which protocol did router R1 learn the prefix 192.168.20.0/24?

  A. LDP

  B. BGP

  C. MP-BGP

  D. MPLS

  Correct Answer: C

• Question 108:

  Which of the following about 6VPE is FALSE?

  A. To advertise VPN-IPv4 and VPN-IPv6 routes, two MP-BGP sessions are required.

  B. PE routers must support both IPv4 and IPv6 addresses; customer routers can use either one.

  C. MP-BGP is used to advertise IPv6 prefixes and the associated VPRN labels.

  D. The provider core routers are IPv6-unaware.

  Correct Answer: A

• Question 109:

  Which of the following about VPRN labels is FALSE?

  A. The outer label allows traffic to transit across the MPLS network.

  B. The inner label identifies the VPRN service.

  C. MP-BGP is used to signal VPRN labels.

  D. The VPRN service label contains the customer's IP address.

  Correct Answer: D

• Question 110:

  Which of the following about VPRNs is FALSE?

  A. A VPRN is a Layer 3 service.

  B. A PE maintains a separate forwarding table for each VPRN.

  C. The service provider manages the customers IP addressing.

  D. Multiple VPRNs can be deployed over the same IP/MPLS network infrastructure.

  Correct Answer: C