Alcatel-Lucent Virtual Private Routed Networks v8.0 (4A0-106)

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Total 203 questions

Click the exhibit.


For the inter-AS model C VPRN, which of the following is FALSE when an IP packet is sent from 192.1.1.1 to 192.2.1.1?

  • A. PE1 pushes three labels on the IP packet: a VPN label, a BGP label, and an LDP transport label.
  • B. ASBR1 pops the LDP and BGP labels and swaps the VPN label.
  • C. ASBR2 pops the BGP label and pushes an LDP transport label.
  • D. PE2 pops two labels and forwards the unlabeled packet to its destination.


Answer : B

Click the exhibit.


For the inter-AS model B VPRN, which of the following protocols is used to advertise routes between PE1 and ASBRI?

  • A. iBGP
  • B. eBGP
  • C. MP-iBGP
  • D. MP-eBGP


Answer : C

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

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


Answer : D

Click the exhibit.


A Carrier Supporting Carrier (CSC) VPRN is configured on an Alcatel-Lucent 7750 SR for a customer carrier offering VPRN services. Which of the following about this configuration is
FALSE?

  • A. In the CSC VPRN, configure an eBGP session between CSC-PE and CSC-CE and use the "advertise-label vpn-ipv4" CLI command to enable the advertisement of VPN-IPv4 routes.
  • B. When the customer carrier uses the same autonomous system number in various sites, use the "loop-detect off" CLI command to disable the loop detection functionality on CSC- CE and PE routers.
  • C. On the CSC-PE routers, use the "carrier-carrier-vpn" CLI command to configure the VPRN service as CSC.
  • D. Configure an iBGP session between PE1 and PE2 and use the "family vpn-ipv4" CLI command to directly exchange end-customer routes learned from CE1 and CE2.


Answer : A

Choose the best answer to describe the result of the configuration of an Alcatel-Lucent
7750 SR shown below?

  • A. The PE will install a maximum of 40 prefixes into the customer vrf and generate a log message when 40 routes are received
  • B. The PE will install a maximum of 40 prefixes into the customer vrf, and generate a log message both when 30 and 41 routes are received
  • C. The PE will install a maximum of 40 prefixes into the customer vrf, generate a log message when 10 routes are received and disable learning of new routes at 41
  • D. The PE will install a maximum of 40 prefixes into the customer vrf, generate a log message when 10 routes are received and drop the connection at 41
  • E. The PE will install a maximum of 40 prefixes into the customer vrf, generate a log message when 4 routes are received and disable learning of new routes at 41


Answer : E

In a VPRN, which of the following are supported as PE-CE routing methods on the Alcatel-
Lucent 7750 SR? (Choose four).

  • A. Static
  • B. RIP
  • C. OSPF
  • D. IS-IS
  • E. MP-BGP
  • F. BGP


Answer : A,B,C,F

Click the exhibit.


Internet access using route leaking between the VRF and the global routing table is configured in the network. Which of the following is the correct output of route 192.168.50.1 in the global routing table of PE3?

  • A. A
  • B. B
  • C. C
  • D. D


Answer : B

You are configuring spoke SDP termination of a VPLS service on a VPRN interface on an
AlcatelLucent 7750 SR. The spoke SDP is running over a NULL encapsulated network port. The best practice is to set the VPRN interface p-mtu equal to what value over a NULL encapsulated network port.

  • A. The SDP path-MTU minus 14
  • B. The LMTU found in how router ldp bindings on the VPLS side of the spoke SDP
  • C. The configured service-mtu of the VPLS service
  • D. The LMTU found in how router ldp bindings on the VPLS side of the spoke SDP minus14
  • E. The SDP path-MTU


Answer : B

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.


Answer : D

Click the exhibit.


A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is a
BGP/MPLS service provider. If CE1 sends an IP packet to 192.168.200.1, which of the following is FALSE?

  • A. CE1 forwards the data packet to PE1 via the VPRN 20 interface.
  • B. PE1 pushes two labels on the IP packet: a BGP label and an LDP transport label.
  • C. CSC-CE1 pops the LDP label and swaps the BGP label.
  • D. CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.


Answer : B

Which command is used to generate the output from an Alcatel-Lucent 7750 SR shown below?


  • A. Show service 3
  • B. Show service id 3
  • C. Show service 3 base
  • D. Show service id 3 base
  • E. Show service 3 detail
  • F. Show service id 3 detail


Answer : D

Click the exhibit.


A Carrier Supporting Carrier (CSC) VPRN is configured for a customer carrier who is an
Internet Service Provider (ISP). Which route is NOT present in PE1's global routing table?

  • A. 192.60.100.0
  • B. 10.10.10.6
  • C. 10.10.10.3
  • D. 192.50.1.1


Answer : C

Which of the following about BGP Site of Origin (SoO) is FALSE?

  • A. The SoO attribute can be used to uniquely identify the site from which a PE learns routes.
  • B. Before a PE redistributes a VPN-IPv4 route, it can assign an SoO attribute to the route.
  • C. The SoO attribute can be used to prevent loops from a single site with multiple CE-PE connections.
  • D. The SoO attribute can be used as matching criteria when redistributing routes from the CE to the PE.


Answer : D

An SDP has been configured for a VPRN service using an existing MPLS LSP and the configuration shown below. Which of the statements below is true about the configuration on an Alcatel-Lucent 7750 SR?

  • A. The configuration is incomplete as the uto-bind command is missing
  • B. The configuration is incomplete as the ignaling off command is missing
  • C. The configuration is incorrect as VPRN service does not support spoke-sdp configuration using MPLS LSPs
  • D. The configuration is incorrect as Line 8 should be poke-sdp 42 mpls create
  • E. The configuration is complete and correct


Answer : B

Choose the answer that best completes the following sentence. The CE device is typically configured with _________________.

  • A. A single routing protocol for exchanging routes with both the internal customer routers and with the PE
  • B. MP-BGP to exchange routes with the PE.
  • C. MPLS and a routing protocol for the exchange of labels and routes with the PE
  • D. MPLS for exchanging labels with other CE devices
  • E. A routing protocol for exchanging routes with the internal customer routers and a routing protocol for exchanging routes with the PE


Answer : E

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Total 203 questions