nokia 4a0-105 practice test

Exam Title: Nokia Virtual Private LAN Services

Last update: Nov 27 ,2025
Question 1

Click on the exhibit below.

The following VPLS services and SAPs have been configured. Which of the following statements is
true?

  • A. All untagged frames will be dropped.
  • B. The source MAC address of a frame with a top tag of 200 and bottom tag of 300 will be populated in VPLS 3.
  • C. All frames with more than one tag will be dropped.
  • D. The source MAC address of a frame with a single tag of 500 will be populated in VPLS 1.
  • E. The source MAC address of a frame with a top tag of 100 will be populated in VPLS 2.
Answer:

E


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Question 2

Click on the exhibit below.

If the SDP between R2 and R1 goes down, what devices will be reachable from R2 through the VPLS?

  • A. Only R4 will be reachable through the VPLS. B All devices will be reachable through the VPLS.
  • C. R4 and R3 will remain reachable.
  • D. No devices will be reachable.
Answer:

A


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Question 3

What is the default service-mtu for a VPLS service?

  • A. 1500
  • B. 1514
  • C. 1518
  • D. It depends on the access port MTU.
  • E. It depends on the network port MTU.
Answer:

B


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Question 4

Click on the exhibit below.

The VPLS service MTU on R2 is 1514 bytes. What must the service MTU be on all other routers
participating in the VPLS?

  • A. The service MTU must be equal to or smaller than 1514 bytes.
  • B. The service MTU must be 1514 bytes.
  • C. The service MTU must be equal to or greater than 1514 bytes.
  • D. The service MTU can be any value.
Answer:

B


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Question 5

What is the default fdb size for a VPLS service?

  • A. 100
  • B. 1
  • C. 25
  • D. 250
Answer:

D


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Question 6

If the command "disable-learning" has been added at the VPLS level, then MAC entries which have
already been learned will not be aged.

  • A. TRUE
  • B. FALSE
Answer:

B


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Question 7

Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a
SAP within a VPLS service?

  • A. oam mac-populate
  • B. oam mac-ping
  • C. oam mac-trace
  • D. oam svc-ping
  • E. oam cpe-ping
Answer:

E


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Question 8

During the process of troubleshooting a VPLS problem the "oam mac-purge" command with
"register" option was used to purge a MAC address from the FDB. Which of the following statements
is true?

  • A. Relearning of the MAC address that was purged can only be done once customer traffic resumes.
  • B. Relearning of the MAC address that was purged can only be done with the "oam mac-populate" command.
  • C. Customer traffic destined to the MAC address that was purged will be dropped until the MAC address is relearned with the "oam mac-populate" command.
  • D. Relearning of the MAC address that was purged can only be done with the "oam mac-register" command.
Answer:

B


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Question 9

Click on the exhibit below.

The following IP filter has been configured and applied to a SAP in a non-VPLS service. Which of the
following statements is true?

  • A. An error will be generated and the configuration will not be allowed.
  • B. The filter entry will be ignored and traffic matching the criteria will be forwarded
  • C. All traffic matching entry 20 will be dropped.
  • D. Traffic matching entry 20 will be forwarded to sdp 100:1.
Answer:

C


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Question 10

Which of the following statements is true?

  • A. Filter Policies can only be applied on egress.
  • B. An IP filter can be applied on ingress at the same time a MAC filter is applied on the egress of the SAP.
  • C. Filter Policies can be based on IP, MAC, and VPI/VCI addresses.
  • D. Any number of ingress and egress filter policies can be associated with a SAP.
  • E. An IP filter and a MAC filter can be applied on the ingress SAP at the same time.
  • F. None of the above.
Answer:

B


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