Latest [Nov 18, 2021] 4A0-106 Exam with Accurate Nokia Virtual Private Routed Networks PDF Questions
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NEW QUESTION 80
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 LMTU found in how router ldp bindings on the VPLS side of the spoke SDP minus14
- B. The configured service-mtu of the VPLS service
- C. The SDP path-MTU
- D. The SDP path-MTU minus 14
- E. The LMTU found in how router ldp bindings on the VPLS side of the spoke SDP
Answer: E
Explanation:
Section: Volume A
NEW QUESTION 81
Which of the following about a full mesh VPRN design is FALSE?
- A. It requires a full BGP mesh in the provider core.
- B. Each customer site has a logically direct route to every other customer site.
- C. It allows access between all CE devices and all sites participating in the same VRF.
- D. It provides optimal routing between all sites.
Answer: A
NEW QUESTION 82
What operation is performed by a P device on the label signaled by MP-BGP when it receives a labeled packet for a VPRN service?
- A. It will SWAP the label for a new label and then label switch the packet
- B. The P router does not perform any operation on this label
- C. It will label switch the packet based on this label
- D. It will decrement the TTL and label switch the packet based on this label
Answer: B
NEW QUESTION 83
When does a router add a Route Target to a route?
- A. When the PE propagates the route to the CE.
- B. When the PE populates the route received from the CE into the VRF.
- C. When the PE exports the route from the VRF into the MP-BGP table.
- D. When the P receives the route from the PE.
Answer: C
NEW QUESTION 84
Choose the answer that best completes the following sentence. The CE device is typically configured with
_________________.
- A. MP-BGP to exchange routes with the PE.
- B. MPLS and a routing protocol for the exchange of labels and routes with the PE
- C. MPLS for exchanging labels with other CE devices
- D. A single routing protocol for exchanging routes with both the internal customer routers and with the PE
- E. A routing protocol for exchanging routes with the internal customer routers and a routing protocol for exchanging routes with the PE
Answer: E
NEW QUESTION 85
Which of the following commands on an Alcatel-Lucent 7750 SR will verify connectivity for a VPRN service
<service-id> when issued from the PE?
- A. oam <service-id> vprn-ping source <source-ip> destination <destination-ip>
- B. oam vprn-ping <service-id> source <source-ip> destination <destination-ip>
- C. Ping <destination-ip> source <source-ip>
- D. vprn-ping router <service-id> <destination-ip>
Answer: B
Explanation:
Section: Volume A
NEW QUESTION 86
Click the exhibit.
A Carrier Supporting Carrier (CSC) VPRN is configured on an Nokia 7750 SR for a customer carrier who is an Internet Service Provider (ISP). Which of the following configuration steps is NOT required?
- A. Configuring labeled iBGP sessions between PEs residing in different customer carrier sites.
- B. Advertising the received system addresses of remote PEs using either iBGP or IGP/LDP within each customer carrier site.
- 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: A
NEW QUESTION 87
What is wrong with the configuration shown below?
- A. The VPRN ID must be the same value as is used in the route-distinguisher command
- B. The vrf-target command is mandatory
- C. The router-id command should not be used in this context
- D. There is nothing wrong with this configuration
- E. The VPRN ID must be the same value as is used in the vrf-target command
Answer: D
Explanation:
Section: Volume A
NEW QUESTION 88
Which command should be used on an Alcatel-Lucent 7750 SR acting as the PE, to view the table containing the BGP routes received from the remote sites?
- A. Show router bgp routes
- B. Show router bgp routes <service-id>
- C. Show router <service-id> bgp routes
- D. Show router bgp routes address-family vpn-ipv4
Answer: A
Explanation:
Section: Volume A
NEW QUESTION 89
In a VPRN, which of the following are supported as PE-CE routing methods on the Alcatel-Lucent 7750 SR? (Choose four).
- A. RIP
- B. Static
- C. BGP
- D. OSPF
- E. IS-IS
- F. MP-BGP
Answer: A,B,C,D
NEW QUESTION 90
Click the exhibit.
According to the display, a BGP loop is detected for route 192.168.1.0/27. On which router is this command executed?
- A. PE2
- B. CE1
- C. PE1
- D. CE2
Answer: D
Explanation:
Section: Volume A
Explanation
NEW QUESTION 91
How are local CE routes associated with the appropriate VRF at the PE?
- A. Based on the interface on which they are received.
- B. Based on the Route Target.
- C. Based on the Route Distinguisher.
- D. Based on the Service Identifier.
Answer: A
Explanation:
Section: Volume B
Explanation/Reference:
NEW QUESTION 92
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-PE1 pops the BGP label and pushes a VPN label and an MPLS transport label.
- D. CSC-CE1 pops the LDP label and swaps the BGP label.
Answer: B
NEW QUESTION 93
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 94
Which of the following statements best describes the output from an Alcatel-Lucent 7750 SR shown below?
- A. The BGP session between PE and CE is not operational
- B. The BGP session from PE to P is not operational
- C. The BGP session between PEs is operational
- D. The BGP session between PEs is not operational
- E. The BGP session from PE to CE is operational
Answer: E
Explanation:
Section: Volume A
NEW QUESTION 95
On an Nokia 7750 SR, which CLI command displays the Route Target(s) associated to a prefix?
- A. Show router bgp routes
- B. Show router route-table summary
- C. Show router bgp routes vpn-ipv4 detail
- D. Show router route-table
Answer: C
NEW QUESTION 96
In a traditional layer 3 VPN which of the following will be an issue when there is overlapping address space between two customers? Choose the best answer.
- A. The PE will not recognize the prefixes as being different
- B. There is no issue with overlapping address space in a traditional Layer 3 VPN
- C. The CE will reject the overlapping prefix
- D. There will be increased CPU utilization on the PE
- E. There will be increased memory usage on the PE
Answer: A
Explanation:
Section: Volume A
NEW QUESTION 97
Which of the following about the configuration of VPRN Outbound Route Filtering (ORB on an Alcatel-Lucent
7750 SR is TRUE?
- A. When Outbound Route Filtering is configured, both the sending and acceptance of ORF are enabled by default.
- 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. The ORF configuration must be done under the BGP neighbor context only.
Answer: C
Explanation:
Section: Volume A
NEW QUESTION 98
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 route-distinguisher value must be 64496:10 for successful VPRN operation.
- E. The neighbor address should be 10.10.10.4 under the BGP configuration for successful VPRN operation.
Answer: C
NEW QUESTION 99
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 100
Click the exhibit.
Which VPRN type produces the output shown on router R1?
- A. APE hub and spoke VPRN
- B. ACE hub and spoke VPRN
- C. An extranet VPRN
- D. A full mesh VPRN
Answer: C
NEW QUESTION 101
What operation does a P device perform when it receives a labeled packet for a VPRN service?
- A. It decrements the TTL and forwards the packet based on the inner label.
- B. The P router does not perform any operations on labeled packets.
- C. It forwards the packet based on the label signaled by MP-BGP.
- D. It swaps the outer label then forwards the packet.
Answer: D
NEW QUESTION 102
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