Nokia Service Routing Architect 4A0-106 Real Exam Questions and Answers FREE Updated on Aug 21, 2021
4A0-106 Ultimate Study Guide - TestPDF
NEW QUESTION 98
Which of the following about Carrier Supporting Carrier (CSC) VPRN is FALSE?
- A. A CSC VPRN is configured on the customer carrier's CSC-CE routers.
- B. The customer carrier provides VPN or Internet services to its end-customers.
- C. CSC is also known as carrier's carrier or carrier serving carrier.
- D. CSC eliminates the need for customer carriers to build and maintain their own MPLS backbone.
Answer: A
Explanation:
Section: Volume A
NEW QUESTION 99
Click the exhibit.
PE3 learns Internet routes via its VRF interface to the Internet peering router and stores them in its Internet VRF. CE1 is connected to the Red VPN and requires Internet access via its Red VRF interface. Which of the following statements do not fulfill this requirement?
- A. PE1 advertises the Red VPN routes and a default route to PE3.
- B. PE1 imports all Internet routes and advertises them to CE1 via the Red VRF.
- C. PE3 advertises a default route from its Internet VRF instead of advertising all Internet routes.
- D. The Internet VRF on PE3 imports the Red VPN routes advertised by PE1.
Answer: A
Explanation:
Section: Volume A
NEW QUESTION 100
If Route Reflector 1 (RR1) is used for Internet routes, and Route Reflector 2 (RR2) is used for VPN routes, which of the following is TRUE?
- A. BGP sessions established between RR2 and the PEs support the IPv4 address family only.
- B. BGP sessions established between RR1 and the PEs support the IPv4 address family only.
- C. BGP sessions established between RR1 and the PEs support IPv4 and VPN-IPv4 address families.
- D. BGP sessions established between RR2 and the PEs support IPv4 and VPN-IPv4 address families.
Answer: B
Explanation:
Section: Volume B
NEW QUESTION 101
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. 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.
- B. 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.
- C. On the CSC-PE routers, use the "carrier-carrier-vpn" CLI command to configure the VPRN service as CSC.
- D. 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.
Answer: B
NEW QUESTION 102
Which of the following commands may be used on an Alcatel-Lucent 7750 SR to display a network exported locally to BGP on the originating router? (Choose two)
- A. Show router bgp routes
- B. Show router bgp routes prefix <prefix>
- C. Show router bgp neighbor <neighbor ip> advertised-routes
- D. Show router bgp routes <prefix> self-originated
- E. Show router bgp routes <prefix> hunt
Answer: C,E
NEW QUESTION 103
Click the exhibit.
Which of the following best describes the output from the Alcatel-Lucent 7750 SR?
- A. RSVP-TE has signaled a VPRN label.
- B. MP-BGP has signaled a VPRN label.
- C. MP-BGP has signaled both VPRN and LSP labels.
- D. RSVP-TE has signaled both VPRN and LSP labels.
Answer: B
NEW QUESTION 104
In a Carrier Supporting Carrier (CSC) VPRN, which of the following is a benefit to the customer carrier?
- A. There is no need to manage end-customer services.
- B. The ability to maintain its own backbone.
- C. The ability to offer Internet connectivity and a variety of services over a single CSC VPRN interface.
- D. The ability to learn system addresses of network provider PEs.
Answer: C
Explanation:
Section: Volume B
NEW QUESTION 105
Click the exhibit.
What is wrong with the VPRN configuration applied on this Alcatel-Lucent 7750 SR?
- A. The router-id command should not be used in this context.
- B. The VPRN ID must match the value used in the route-distinguisher command.
- C. The "no shutdown" command must be configured for the VPRN to be operationally UP.
- D. The VPRN ID must match the value used in the vrf-target command.
Answer: C
NEW QUESTION 106
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. 10.10.10.3
- C. 192.50.1.1
- D. 10.10.10.6
Answer: B
NEW QUESTION 107
Click the exhibit.
Routers RR1 and RR2 are configured as route reflectors. For the inter-AS model C VPRN, which of the following about the VPN-IPv4 route advertisement is FALSE?
- A. RR2 advertises the VPN-IPv4 route update of 192.2.1.0/27 to RR1
- B. PE1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR1 and ASBRL
- C. RR2 advertises the VPN-IPv4 route update of 192.1.1.0/27 to PE2
- D. RR1 advertises the VPN-IPv4 route update of 192.1.1.0/27 to RR2
Answer: B
NEW QUESTION 108
What are the two main benefits of a hub and spoke VPRN design? (Choose two)
- A. Optimal routing between all sites
- B. Reduced number of VPN tunnels that need to be managed
- C. Limited configuration required on the hub PE device
- D. Centralized filtering policies with the introduction of a hub site
Answer: B,D
NEW QUESTION 109
Click the exhibit.
For the inter-AS model A VPRN. BGP is used as the PE-CE routing protocol. Which of the following statements about the control plane operation is TRUE?
- A. PE1 sends an IPv4 update for prefix 192.168.1.0/27 via MP-BGP to ASBR1.
- B. ASBR1 sends an IPv4 update for prefix 192.168.1.0/27 to ASBR2.
- C. ASBR2 accepts a VPN-IPv4 update from ASBR1, then sends the update to PE2 via MP-BGP.
- D. ASBR1 transforms an IPv4 update for prefix 192.168.1.0/27 to a VPN-IPv4 route; allocates VPN label V1 and sends the update to ASBR2.
Answer: B
NEW QUESTION 110
Click the exhibit.
The policy shown is configured on an Alcatel-Lucent 7750 SR to implement an extranet VPRN between the main sites of two separate VPRNs. Route target "target:65100:2" is used for Customer 1 routes, and route target "target:65100:3" is used for Extranet routes. How should this policy be applied?
- A. The policy should be applied as an import policy on the PE connected to the main site of Customer 1.
- B. The policy should be applied as an export policy on all the PEs connected to the sites of Customer 1.
- C. The policy should be applied as an export policy on the PE connected to the main site of Customer 1.
- D. The policy should be applied as an import policy on all the PEs connected to the sites of Customer 1.
Answer: A
NEW QUESTION 111
Choose the best answer to describe the result of the configuration of an Nokia 7750 SR shown below?
- A. 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
- B. 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
- C. 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
- D. 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
- E. The PE will install a maximum of 40 prefixes into the customer vrf and generate a log message when 40 routes are received
Answer: B
NEW QUESTION 112
Which of the following describes the goal of an Extranet VPRN?
- A. To reduce the number of VPRN tunnels required.
- B. To allow routes to be exchanged between all, or selected, sites of one VPRN, and all, or selected, sites of a second VPRN.
- C. To allow network access between the headquarter sites of each VPRN service and a shared VPRN service offered by a third party.
- D. To simplify the administration of multiple VPRNs.
Answer: B
Explanation:
Section: Volume A
NEW QUESTION 113
Click the exhibit.
Which of the following about the inter-AS model A VPRN configuration on ASBR1 is TRUE?
- A. An export policy is not required for successful VPRN operation.
- B. The "family vpn-ipv4" command is required under the BGP configuration for successful VPRN operation.
- C. The VPRN configuration on ASBR1 is correct.
- D. The neighbor address should be 10.10.10.4 under the BGP configuration for successful VPRN operation.
- E. The route-distinguisher value must be 64496:10 for successful VPRN operation.
Answer: C
NEW QUESTION 114
Click the exhibit.
For the CE hub and spoke VPRN, which of the following is FALSE?
- A. The primary VRF on PE1 contains routes learned from spoke sites.
- B. The secondary VRF on PE1 is used to route data packets from the hub CE to the spoke sites.
- C. All traffic between spoke sites must pass through CE1.
- D. PE1 advertises the primary VRF routes to CE1.
Answer: B
NEW QUESTION 115
Click the exhibit.
Which of the following best describes the output?
- A. The AS-Path is not present because a policy is configured on CE1 to set it to null.
- B. The AS-Path is not present because a policy is configured on PE2 to set it to null.
- C. The AS-Path is not present because a policy is configured on PE1 to set it to null.
- D. The AS-Path is not present because VPN-IPv4 routes do not propagate the IPv4 AS-Path BGP attribute.
Answer: C
Explanation:
Section: Volume A
NEW QUESTION 116
Click the exhibit.
Internet access is provided to the Red VPRN (ID 10) via an Internet VRF (ID 500). For this configuration, which communities must be imported on the Red and Internet VRFs?
- A. Red VRF imports "Internet" and "Red-Only"
Internet VRF imports only "Red-Only" - B. Red VRF imports only "Internet"
Internet VRF imports only "Red-Only" - C. Red VRF imports "Internet" and "Red-Only"
Internet VRF imports only "Internet" - D. Red VRF imports only "Red-Only"
Internet VRF imports "Red-Only" and "Internet"
Answer: A
Explanation:
Section: Volume B
NEW QUESTION 117
Which of the following describes how a route is handled when is received at the PE from the local CE?
- A. It will be placed into the customer VRF and then be propagated to the BGP table only if BGP is used as the PE-CE protocol
- B. It will be placed into the customer VRF and require an export policy to be propagated to the BGP table
- C. It will be placed into the customer VRF and require an export policy to be propagated to the BGP table if RIP is used as the PE-CE protocol
- D. It will be placed into the customer VRF and require an export policy to be placed into the BGP table if a protocol other than BGP is used as the PE-CE protocol
- E. It will be placed into the customer VRF and automatically propagated into the BGP table
Answer: E
NEW QUESTION 118
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