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Updated Feb 20, 2023 43 Questions 3 Pages

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Question 31 Selectable Answer

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

A. PE2 pushes two labels on the IP packet and forwards it to ASBR2.
B. ASBR2 forwards the IP packet with one label to ASBR1.
C. ASBR1 label-switches the packet and forwards it with one label to PE1.
D. PE1 forwards an unlabeled IP packet to CE1.

Answer:

Question 32 Selectable Answer

Which of the following about the control plane in Carrier Supporting Carrier (CSC) VPRN is FALSE?

A. End-customer routes are populated in the network provider CSC VR
B. The customer carrier does not learn any network provider internal routes.
C. The network provider learns customer carrier PE system addresses.
D. Routes exchanged between the customer carrier and the network provider are labeled.

Answer:

Question 33 Selectable Answer

Click the exhibit.

Which of the following commands produces the output for the inter-AS model B VPRN?

A. ASBR1# show router 10 bgp routes vpn-ipv4
B. ASBR1# show router bgp routes
C. ASBR1# show router bgp routes vpn-ipv4
D. ASBR1# show router route-table

Answer:

Question 34 Selectable Answer

Click the exhibit.

The headquarter sites of VPRN 10 and VPRN 20 are part of an extranet VPRN.
Which route targets should be exported under the VPRN 20 service on router R1?

A. Target:65100:2 and target:65100:3
B. Target:65100:1 and target:65100:2
C. Target:65100:1 and target:65100:3
D. Target:65100:1, target:65100:2 and target:65100:3

Answer:

Question 35 Selectable Answer

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 Nokia 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:

Question 36 Selectable Answer

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. PE1 pushes a VPN label, a BGP label, and an LDP transport label on the IP packet.
B. CSC-CE1 pops the LDP label and swaps the BGP label.
C. CSC-PE1 pops the BGP label, swaps the VPN label, and pushes an LDP transport label.
D. CSC-PE2 pops the LDP and VPN labels and pushes a BGP label.

Answer:

Question 37 Selectable Answer

Click the exhibit.

For the inter-AS model C VPRN, how many labels does PE1 push on a data packet received from CE1 and destined to CE2?

A. 1
B. 2
C. 3
D. 4

Answer:

Question 38 Selectable Answer

What are the main functions of a Layer 3 VPN? (Choose three).

A. Distributing customer routing information between sites
B. Forwarding customer data packets
C. Providing an integrated billing solution
D. Maintaining separation between distinct customer networks
E. Allowing the implementation of Layer 3 devices in the provider core

Answer:

Question 39 Selectable Answer

Which of the following VPRN topologies must a customer implement to allow a given VRF to include routes from different VPRNs?

A. Either a hub and spoke or an extranet VPRN
B. An extranet VPRN
C. A hub and spoke VPRN
D. Either a full mesh or a hub and spoke VPRN

Answer:

Question 40 Selectable Answer

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

A. The route with the lowest ME
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.

Answer:

Question 41 Selectable Answer

Click the exhibit.

A Carrier Supporting Carrier (CSC) VPRN is configured on an Nokia 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 CS
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:

Question 42 Selectable Answer

When VPRN Outbound Route Filtering (ORF) is enabled, each PE sends its ORF list to its peer using which of the following BGP message types?

A. Open
B. Update
C. Route Refresh
D. Notification

Answer:

Question 43 Selectable Answer

Which of the following about the configuration of VPRN Outbound Route Filtering (ORB on an Nokia 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:

Current Exam

4A0-106

Alcatel Lucent
Nokia Virtual Private Routed Networks

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