Nokia 4A0-106 Online Practice Questions and Exam Preparation

Nokia 4A0-106 Online Questions & Answers

• Question 51:

  How was standard BGP modified to allow it to carry routing information for VPRNs?

  A. By using the MED attribute to carry the OSPF metric.
  B. By defining Extended Communities for use as the Route Target
  C. By using the Cluster List attribute to carry the network prefix
  D. By defining support for the VPN-IPv4 address family
  E. By adding an additional field to the BGP Update to carry the VPRN label
  D. By defining support for the VPN-IPv4 address family

• Question 52:

  Assuming that as-override has been used, which of the following statements describes the most likely location of prefix 10.1.2.0/24, based on the output from an Alcatel-Lucent 7750 SR shown below?

  

  A. It is located in an Autonomous System directly connected to this router
  B. There is a single Autonomous System between the local AS and the AS that originated the prefix
  C. There are two Autonomous Systems between the local AS and the AS that originated the prefix
  D. There may be two or more Autonomous Systems between the local AS and the AS that originated the prefix
  E. It is located in Autonomous System 65100
  B. There is a single Autonomous System between the local AS and the AS that originated the prefix

• Question 53:

  Click the exhibit.

  

  If the displayed command is executed, what is the correct value of AS-Path in the BGP route 172.12.0.0/16 advertised by PE2?

  A. 64491 {64492 64493}
  B. 64491
  C. 64492 64493 64491
  D. {64492 64493)64491
  A. 64491 {64492 64493}

• Question 54:

  Which of the following is a characteristic of inter-AS model C VPRN?

  A. A data packet destined to a remote AS is encapsulated with three labels within the originating AS.
  B. The ASBR redistributes VPN-IPv4 updates to its ASBR eBGP peers.
  C. PE routers in different ASes exchange IPv4 routes directly between each other using eBGP.
  D. The advertising ASBR assigns a new label to the route before sending it via an MP-eBGP update to its ASBR peer.
  A. A data packet destined to a remote AS is encapsulated with three labels within the originating AS.

• Question 55:

  What are the two main benefits of a hub and spoke VPRN design? (Choose two)

  A. Reduced number of VPN tunnels that need to be managed
  B. Centralized filtering policies with the introduction of a hub site
  C. Optimal routing between all sites
  D. Limited configuration required on the hub PE device
  A. Reduced number of VPN tunnels that need to be managed
  B. Centralized filtering policies with the introduction of a hub site

• Question 56:

  In a VPRN, how does the service provider ensure that customer addresses are unique when multiple customers use the same address space?

  A. It is the customer responsibility to ensure their address space is unique
  B. The Route Distinguisher ensures that addresses are unique between customers.
  C. The Route Target ensures that addresses are unique between customers
  D. The provider will advise the customers to change their addresses
  E. The provider will use NAT to ensure that addresses are unique between customers
  B. The Route Distinguisher ensures that addresses are unique between customers.

• Question 57:

  VPN-IPv4 addressing is made unique by defining an address structure consisting of:

  A. A 64-bit Route Target followed by a 32-bit IPv4 address.
  B. A 64-bit Route Distinguisher followed by a 32-bit IPv4 address.
  C. A 32-bit Route Distinguisher followed by a 32-bit IPv4 address.
  D. A 32-bit Route Target followed by a 32-bit IPv4 address.
  B. A 64-bit Route Distinguisher followed by a 32-bit IPv4 address.

• Question 58:

  Which of the following is a benefit of a hub and spoke VPRN topology?

  A. Reduced number of VPN tunnels that need to be managed.
  B. Optimal routing between all sites.
  C. Limited configuration required on the hub PE device.
  D. Site to site redundancy support.
  A. Reduced number of VPN tunnels that need to be managed.

• Question 59:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?

  A. Configuring iBGP sessions between PEs residing in different customer carrier sites,
  B. Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.
  C. Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.
  D. Configuring an IES service on PE1.
  C. Configuring a CSC VPRN on each CSC-PE with a SAP interface towards the attached CSC-CE.

• Question 60:

  Click the exhibit.

  

  For the Inter-AS model B VPRN, which of the route updates for prefix 192.168.1.0/27 is incorrect?

  A. The route update sent from PE1.
  B. The route update sent from PE2.
  C. The route update sent from ASBR1.
  D. The route update sent from ASBR2.
  B. The route update sent from PE2.