4A0-106 Braindumps PDF, Nokia 4A0-106 Exam Cram
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What is the duration of the 4A0-106 Exam
- Length of Examination: 90 minutes
- Format: Multiple choices, multiple answers
- Number of Questions: 60
NEW QUESTION 72
When a routing protocol is configured as the PE-CE protocol at one site of a customer VPRN, the same routing protocol must be configured as the PE-CE protocol at all other sites of the same customer VPRN.
- A. True
- B. False
Answer: B
Explanation:
Section: Volume A
NEW QUESTION 73
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. The Internet VRF on PE3 imports the Red VPN routes advertised by PE1.
- B. PE1 advertises the Red VPN routes and a default route to PE3.
- C. PE1 imports all Internet routes and advertises them to CE1 via the Red VRF.
- D. PE3 advertises a default route from its Internet VRF instead of advertising all Internet routes.
Answer: B
NEW QUESTION 74
Click the exhibit.
If the displayed command is executed, what is the correct value of AS-Path in the BGP route 172.12.0.0/16 advertised by PE2?
- A. 0
- B. 64492 64493 64491
- C. 64491 {64492 64493}
- D. {64492 64493)64491
Answer: C
NEW QUESTION 75
Which of the following about a full mesh VPRN is FALSE?
- A. Dual CEs connected to redundant PEs can provide redundancy within a single site.
- B. Provider core LSPs can be LDP-based or RSVP-based.
- C. The provider core maintains a full mesh of LSP tunnels and MP-BGP sessions between all P devices.
- D. Site redundancy can be achieved by dual homing a single CE to one or more PEs.
Answer: C
NEW QUESTION 76
For a Carrier Supporting Carrier (CSC) VPRN where the customer carrier is an ISP that provides Internet connectivity to its end-customers, which of the following is FALSE?
- A. The customer carrier network can be a pure IP network.
- B. All traffic exchanged between end-customers is carried over a single CSC VRF.
- C. MPLS can be used in the customer carrier network to improve scalability.
- D. Customer carrier PE routers residing in different sites must run eBGP between them to exchange customers' routes.
Answer: D
NEW QUESTION 77
When configuring a VPRN service on an Nokia 7750 SR, where should the following policy be applied?
- A. This policy is not required
- B. On the PE under the BGP context
- C. On the CE under the BGP context
- D. On the PE under the RIP context
- E. On the CE under the RIP context
Answer: A
NEW QUESTION 78
Which of the following about inter-AS model C VPRN is FALSE?
- A. It requires a route reflector to be configured in each AS for successful operation.
- B. PE routers in different ASes exchange VPN-IPv4 routes directly between each other using MP-eBGP.
- C. ASBRs exchange labeled IPv4 routes for the system addresses of PE routers.
- D. VPN-IPv4 routes are neither maintained nor distributed by the ASBRs.
Answer: A
Explanation:
Section: Volume B
NEW QUESTION 79
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. MP-eBGP
- B. iBGP
- C. eBGP
- D. MP-iBGP
Answer: D
NEW QUESTION 80
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. ASBR2 forwards the IP packet with two labels to PE2.
- B. PE1 pushes two labels on the IP packet and forwards it to ASBR1.
- C. ASBR1 pops the LDP label, swaps the BGP label and forwards the IP packet to ASBR2.
- D. PE2 pops the labels and forwards the unlabeled IP packet to its destination.
Answer: B
Explanation:
Section: Volume B
NEW QUESTION 81
Which of the following about VPRN Outbound Route Filtering (ORF) is FALSE?
- A. Resources consumed at the sender and receiver PEs can be reduced by using BGP ORF.
- B. A PE indicates its ORF capabilities to its neighbor PE in a BGP Open message.
- C. BGP ORF allows a receiving PE to filter out unnecessary inbound routes.
- D. BGP ORF is most effective when a large number of routes is being exchanged between two peers, and most routes are filtered out on arrival.
Answer: C
Explanation:
Section: Volume B
NEW QUESTION 82
In a VPRN, what type of logical topology is required for the BGP sessions configured in the provider core?
- A. Full mesh between all CE, PE and P devices
- B. Full mesh of P devices
- C. Full mesh between PE and CE devices
- D. Full mesh between PE and P devices
- E. Full mesh of PE devices
Answer: E
Explanation:
Section: Volume A
NEW QUESTION 83
Which of the following protocols does the Nokia 7750 SR support to signal VPRN service labels?
- A. MP-BGP
- B. RSVP-TE
- C. BGP
- D. Targeted-LDP
Answer: A
NEW QUESTION 84
Click the exhibit.
For the PE hub and spoke VPRN, on which PE(s) should the VPRN service command target export target:
65100:1 import target: 65100: 2 " be configured?
- A. PE2, PE3 and PE4
- B. This command is not required for the configuration of this PE hub and spoke VPRN.
- C. PE1
- D. PE1, PE2, PE3 and PE4
Answer: C
NEW QUESTION 85
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. Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.
- B. Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.
- C. Configuring a policy on each CSC-CE to advertise local PE addresses to the network provider.
- D. Configuring labeled eBGP sessions between CSC-CE and CSC-PE routers.
Answer: B
Explanation:
Section: Volume B
NEW QUESTION 86
When configuring the CE with the selected CE-PE routing protocol on an Alcatel-Lucent 7750 SR, which of the following statements is true? (Choose three.)
- A. The interface leading to the PE is defined as a protocol neighbor
- B. A routing policy may or may not be required depending on the routing requirements and routing protocol
- C. The protocol is configured under the config>service context
- D. The routing protocol used must be the same as the routing protocol used at other CE-PE locations in the same VPN.
- E. The protocol is configured under the global router context
Answer: A,B,E
NEW QUESTION 87
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 two labels on the IP packet: a BGP label and an LDP transport label.
- B. CSC-CE1 pops the LDP label and swaps the BGP label.
- C. CE1 forwards the data packet to PE1 via the VPRN 20 interface.
- D. CSC-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.
Answer: A
NEW QUESTION 88
In the output from an Nokia 7750 SR shown below, what does the highlighted text represent?
- A. The Service identifier
- B. The tunnel label
- C. The Route Distinguisher
- D. The Route Target
- E. The LDP identifier
Answer: C
NEW QUESTION 89
Click the exhibit.
How many route targets and route distinguishers are required to implement the extranet VPRN?
- A. Three route targets and two route distinguishers
- B. Five route targets and two route distinguishers
- C. Five route targets and three route distinguishers
- D. Three route targets and three route distinguishers
Answer: A
NEW QUESTION 90
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> self-originated
- C. Show router bgp routes <prefix> hunt
- D. Show router bgp routes prefix <prefix>
- E. Show router bgp neighbor <neighbor ip> advertised-routes
Answer: C,E
NEW QUESTION 91
Which of the following about inter-AS model AVPRN is TRUE?
- A. Most routers that support VPRN functionality do not support model A by default.
- B. It is not necessary to run MPLS at the boundary between autonomous systems.
- C. It is the most scalable of the Inter-AS models.
- D. VRF configuration is not required on the ASBRs.
Answer: B
NEW QUESTION 92
Which of the following about BGP loops in a VPRN environment is FALSE?
- A. Traditional BGP loop detection mechanisms may detect a loop in the VPRN scenario, which in fact is not present.
- B. In VPRN implementations where the CE-PE protocol is BGP, it is possible for separate sites of the same customer to use the same BGP autonomous system number.
- C. When the CLI command "config>router>bgp# loop-detect discard-route" is used, the Alcatel-Lucent
7750 SR sends a notification to the remote peer and drops the BGP session. - D. The Alcatel-Lucent 7750 SR accepts routes containing AS_PATH loops by default.
Answer: C
NEW QUESTION 93
In the output from an Alcatel-Lucent 7750 SR shown below, what does the highlighted text represent?
- A. The Service identifier
- B. The tunnel label
- C. The Route Distinguisher
- D. The Route Target
- E. The LDP identifier
Answer: C
Explanation:
Section: Volume A
NEW QUESTION 94
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