Alcatel-Lucent Virtual Private Routed Networks v8.0
Question 1
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 PEL
Answer : C
Question 2
Which of the following is not an available option for Route Distinguisher assignment?
- A. One Route Distinguisher per VRF route
- B. One Route Distinguisher per VRF
- C. One Route Distinguisher per VRF per site
- D. One Route Distinguisher per VPN
Answer : A
Question 3
When would it be appropriate to use the as-override command?
- A. When sites of different VPRN customers use the same BGP AS number
- B. When sites of the same VPRN customer use the same BGP AS number
- C. When sites of different VPRN customers use different BGP AS numbers
- D. When sites of the same VPRN customer use different BGP AS numbers
- E. When the customer site AS number is the same as the provider AS number
Answer : B
Question 4
Which of the following statements best describes the output from an Alcatel-Lucent 7750
SR shown below?
- A. The BGP session from PE to P is not operational
- B. The BGP session between PEs is operational
- C. The BGP session between PE and CE is not operational
- D. The BGP session from PE to CE is operational
- E. The BGP session between PEs is not operational
Answer : D
Question 5
Which of the following about inter-AS model B VPRN is FALSE?
- A. Model B does not require the configuration of VPRN instances on the ASBRs.
- B. The ASBRs exchange data packets that are encapsulated with a transport label and a service label.
- C. The route target advertised in one AS is maintained and used in the remote AS.
- D. The CLI command "configure router bgp enable-inter-as-vpn" is required on the ASBRs.
Answer : B
Question 6
A customer has two sites connected to PE-1 and a third site dual-homed to PE-2 and PE-3.
If BGP is used as the PE-CE protocol, what is the total number of BGP and MP-BGP sessions required on PE-1 for a functional VPRN service? Assume that route reflection is not used.
- A. 0 BGP and 2 MP-BGP sessions
- B. 2 BGP and 0 MP-BGP sessions
- C. 2 BGP and 1 MP-BGP sessions
- D. 2 BGP and 2 MP-BGP sessions
- E. 1 BGP and 2 MP-BGP sessions
Answer : D
Question 7
Click the exhibit.
An extranet VPRN is configured on Alcatel-Lucent 7750 SRs. On which router(s) should the displayed configuration be applied?
- A. Router R1
- B. Router R2
- C. Routers R1 and R2
- D. Router R3
- E. Router R4
Answer : B
Question 8
You are configuring a VPLS spoke termination to a VPRN on an Alcatel-Lucent 7750 SR. If
LDP is used for all transport tunnels, what type of sessions are established by the VPRN
PE router that is configured with the spoke termination?
- A. T-LDP and LDP sessions with the other VPRN PE routers and the VPLS PE router
- B. T-LDP sessions with the other VPRN PE routers and the VPLS PE router
- C. LDP sessions with the other VPRN PE routers and the VPLS PE router
- D. LDP sessions with the other VPRN PE routers, and both T-LDP and LDP sessions with the VPLS PE router
- E. T-LDP and LDP sessions with the other VPRN PE routers and LDP sessions with the VPLS PE router
Answer : D
Question 9
Which of the following about the configuration of VPRN Outbound Route Filtering (ORB on an Alcatel-Lucent 7750 SR is TRUE?
- A. The ORF configuration must be done under the BGP neighbor context only.
- B. When sending is enabled, the ORF function takes the route target list configured in all outbound policies and pushes this list to the peer by default.
- C. When configuring ORF, the session with the peer must be cleared/reset for the new capability negotiation to take place.
- D. When Outbound Route Filtering is configured, both the sending and acceptance of ORF are enabled by default.
Answer : C
Question 10
Which of the following about Carrier Supporting Carrier (CSC) VPRN is FALSE?
- A. CSC eliminates the need for customer carriers to build and maintain their own MPLS backbone.
- B. CSC is also known as carrier's carrier or carrier serving carrier.
- C. The customer carrier provides VPN or Internet services to its end-customers.
- D. A CSC VPRN is configured on the customer carrier's CSC-CE routers.
Answer : D
Question 11
Click the exhibit.
Based on the VPRN aggregate route configuration, which routes are advertised to CE2?
- A. 172.12.10.0/24, 172.12.20.0/24 and 172.0.0.0/16
- B. 172.12.0.0/16 only
- C. 172.12.10.0/24 and 172.12.20.0/24
- D. 172.0.0.0/16 only
Answer : C
Question 12
Which of the following protocols does the Alcatel-Lucent 7750 SR support to signal VPRN service labels?
- A. Targeted-LDP
- B. BGP
- C. MP-BGP
- D. RSVP-TE
Answer : C
Question 13
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
Answer : AE
Question 14
Which of the following about the maximum number of routes that can be accepted in a VRF for a VPRN service on the Alcatel-Lucent 7750 SR is FALSE?
- A. The Alcatel-Lucent 7750 SR allows the setting of the maximum number of routes that can be accepted in a VRF for a VPRN service.
- B. The "maximum-routes" command is used to specify the maximum number of remote routes that can be held within a VRF for a VPRN service.
- C. When the "maximum-routes" command is used with the "log-only" parameter, new routes are still learned.
- D. Once the "threshold" value is reached, no new routes are added to the VRF.
Answer : D
Question 15
Complete the following statement. In a VPRN, the inner label is used to _______________.
- A. Identify the customer network on the egress PE
- B. Establish the LSPs between PE devices
- C. Identify the egress PE in the MPLS domain
- D. Identify the customer network on the ingress PE
Answer : A