Nokia 4A0-106 Online Practice Questions and Exam Preparation

Nokia 4A0-106 Online Questions & Answers

• Question 181:

  Which of the following about inter-AS model C VPRNs is FALSE?

  A. Within each AS, the ASBR advertises the system addresses of remote PE routers as labeled IPv4 routes.
  B. PE routers in different ASs exchange VPRN routing information directly over MP-eBGP.
  C. Within each AS, MP-iBGP sessions are established to exchange VPN-IPv4 prefixes between the PE routers.
  D. ASBRs exchange the system addresses of PE routers as VPN-IPv4 routes over MP-eBGP.
  D. ASBRs exchange the system addresses of PE routers as VPN-IPv4 routes over MP-eBGP.

• Question 182:

  For the Inter-AS model A VPRN, which of the following is FALSE when CE2 sends an IP packet to 192.168.1.1?

  

  A. CE2 forwards an unlabeled IP packet to PE2 via the VPRN interface.
  B. PE2 pushes one label on the IP packet and label-switches it to ASBR2.
  C. ASBR2 forwards an unlabeled IP packet to ASBR1.
  D. ASBR1 pushes two labels on the IP packet and label-switches the packet to PE1.
  B. PE2 pushes one label on the IP packet and label-switches it to ASBR2.

• Question 183:

  Which of the following about an Alcatel-Lucent 7750 SR MP-BGP update is FALSE? Assume default behavior.

  A. An MP-BGP update carries an MPLS label that is used as the service label for a VPRN.
  B. There can be multiple Route Targets per route in an MP-BGP update.
  C. There can only be one Route Distinguisher per route in an MP-BGP update.
  D. On a specific PE, the MP-BGP updates for prefixes from a single VPRN carry different labels.
  E. Traditional BGP attributes and MP-BGP attributes are present in an MP-BGP update.
  D. On a specific PE, the MP-BGP updates for prefixes from a single VPRN carry different labels.

• Question 184:

  Click the exhibit.

  

  A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an Internet Service Provider (ISP). If CE1 sends an IP packet to 192.60.100.1, which of the following is FALSE?

  A. PE1 pushes an LDP transport label.
  B. CSC-PE1 pops the BGP label and pushes two labels: a VPN label and an MPLS transport label.
  C. CSC-PE2 pops the MPLS transport label and pushes a BGP label.
  D. CSC-CE2 pops the BGP label and pushes an LDP transport label.
  C. CSC-PE2 pops the MPLS transport label and pushes a BGP label.

• Question 185:

  Which of the following statements about inter-AS model C VPRNs is FALSE?

  A. VPN-IPv4 routes are neither held, nor re-advertised, by the ASBRs.
  B. Each ASBR propagates the routes received from its neighbor ASBR as labeled IPv4 routes in its own AS.
  C. ASBRs exchange labeled IPv4 routes for the system addresses of PE routers.
  D. ASBRs exchange customer routes as labeled IPv4 routes.
  D. ASBRs exchange customer routes as labeled IPv4 routes.

• Question 186:

  An advantage of using BGP as the PE-CE protocol is that route policies are no longer required to control the exchange of routes from BGP to MP-BGP.

  A. True
  B. False
  B. False

• Question 187:

  Based on the VPRN BGP decision process, which of the following routes is selected first?

  A. The route with the lowest MED.
  B. The route with the shortest AS Path.
  C. The route received from the lowest peer IP address.
  D. The route with the lowest Origin.
  B. The route with the shortest AS Path.

• Question 188:

  Click the exhibit.

  

  According to the display, a BGP loop is detected for route 192.168.1.0/27. On which router is this command executed?

  A. CE1
  B. CE2
  C. PE1
  D. PE2
  B. CE2

• Question 189:

  Click the exhibit.

  

  Based on the displayed configuration, which routes does PE3 place in the VPRN 10 routing table?

  A. The routes learned from CE3 and PE1.
  B. The route learned from CE3 only.
  C. The routes learned from PE1 and PE2.
  D. The routes learned from CE3 and PE2.
  A. The routes learned from CE3 and PE1.

• Question 190:

  Which of the following statements are true regarding P devices in an MPLS VPRN? (Choose two.)

  A. Participate in service provider core routing
  B. P devices are not required to be MPLS enabled. MPLS is only required on the PE devices
  C. Run a common routing protocol with the CE router
  D. Must support MP-BGP
  E. Do not have any connections to the CE
  F. Must be aware of the VPRNs
  A. Participate in service provider core routing
  E. Do not have any connections to the CE