Nokia Nokia Certifications 4A0-C01 Questions & Answers

• Question 441:

  Which of the following statements are TRUE about configuring a SDP between an IES and a VPLS? (Choose 2)

  A. The SDP must be a mesh

  B. The SDP must be a spoke.

  C. Once the SDP is configured on both PE routers, both the services will be operationally up without further configuration changes.

  D. The Layer 2 MTUs must match between the IES and the VPLS

  E. The Layer 2 MTU must be 14 bytes smaller on the VPLS than it is on the IES.

  Correct Answer: BD

• Question 442:

  Which of the following statements is FALSE regarding 6VPE?

  A. Multiple MP-BGP sessions are required to carry VPN-IPv4 and VPN-IPv6 routes.

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

  C. In 6VPE, MP-BGP is used to advertise IPv6 prefixes and the associated VPRN label.

  D. In 6VPE, the provider core routers are IPv6-unaware.

  E. All of the above statements are true.

  F. All of the above statements are false.

  Correct Answer: A

• Question 443:

  On Alcatel-Lucent 7750 SR OS, routing information between the CE and PE can be exchanged using the following methods.

  A. ISIS, RIP, OSPF, static routes

  B. BGP, ISIS, RIP, OSPF, static routes

  C. BGP, RIP, OSPF, static routes, OSPF3

  D. ISIS, RIP, OSPF, static routes, OSPF3

  Correct Answer: C

• Question 444:

  Click on the exhibit.

  

  Why might router R2 have a Link LDP session to R1 (10.10.10.1:0) but not to R3 (10.10.10.3:0)?

  A. LDP is not configured on R2.

  B. R2 does not have a route to 10.10.10.3.

  C. LDP is not configured on R3's interface to R2.

  D. The targeted session is not configured on R2.

  Correct Answer: C

• Question 445:

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

  A. Incoming label

  B. Outgoing label

  C. Incoming interface

  D. Outgoing interface

  Correct Answer: C

• Question 446:

  Click on the exhibit.

  

  An LSP path is established on router R1 toward router R6. If the link between routers R4 and R6 goes down, which of the following is the quickest way for service recovery?

  A. Router R1 updates its FIB after a new SPF calculation.

  B. Router R1 switches to a secondary path.

  C. Router R4 switches to a FRR path.

  D. Router R4 switches to a standby secondary path.

  Correct Answer: C

• Question 447:

  Click on the exhibit.

  

  This policy is applied on a router as an LDP export policy and an LDP session has been established between this router and its neighboring router. In addition to the FECs learned from its neighbors, what additional FECs will appear in this router's LIB?

  A. All FECs that are in the 192.168.1.0/24 address space.

  B. Local FECs that are in the 192.168.1.0/24 address space.

  C. All FECs that are not in the 192.168.1.0/24 address space.

  D. All FECs except the local FECs that are in the 192.168.1.0/24 address space.

  Correct Answer: B

• Question 448:

  Which of the following statements is NOT a valid reason to use MP-BGP as a routing protocol to transport VPRN routes?

  A. The number of VPRN routes can become very large. MP-BGP can support a very large number of routes.

  B. MP-BGP can carry routing information for a number of different address families.

  C. MP-BGP is designed to exchange information between routers that are not directly connected. This feature keeps VPRN routing information out of P-routers.

  D. MP-BGP can carry additional information attached to a route as an optional BGP attribute.

  E. All of the above statements are valid reasons for using MP-BGP as a VPRN routing protocol.

  Correct Answer: E

• Question 449:

  What labels are encapsulated in the tunnels used by a 6PE deployment?

  A. The inner label is the IPv4 Explicit Null. The outer label is the MPLS transport label,

  B. The inner label is an MPLS transport label. The outer label is the IPv4 Explicit Null.

  C. The inner label is the IPv6 Explicit Null. The outer label is an MPLS transport label.

  D. The inner label is an MPLS transport label. The outer label is the IPv6 Explicit Null.

  Correct Answer: C

• Question 450:

  Which of the following regarding the MPLS SWAP label operation is TRUE?

  A. The inner label will be exchanged with the MPLS outer label.

  B. The inner label will be exchanged for a new label.

  C. The outer label will be exchanged for a new label.

  D. All labels will be exchanged for one new label.

  E. All labels will be exchanged for an equal number of new labels.

  Correct Answer: C