Download Nokia Virtual Private LAN Services.4A0-105.Train4Sure.2018-10-10.95q.vcex

Vendor: Nokia
Exam Code: 4A0-105
Exam Name: Nokia Virtual Private LAN Services
Date: Oct 10, 2018
File Size: 4 MB

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Demo Questions

Question 1
Port 1/1/1 has been configured as an access port with QinQ encapsulation. 
Which of the following three statements are true for ingress traffic assuming default configuration? (Choose 3) 
  1. sap 1/1/1:*.0 is a valid sap id.
  2. sap 1/1/1:100* will accept frames with a single tag of 100.
  3. sap 1/1/1:200* will strip the top tag of 200 and the bottom tag will be transparently passed.
  4. sap 1/1/1:0* will accept all untagged frames.
  5. sap 1/1/1:0* will accept any tagged frames.
Correct answer: BCD
Question 2
Click on the exhibit below.  
  
Assume the port on CE-A is sending two tags, a top tag of 100 and a bottom tag of 500. PE-A is configured with a SAP id of 1/1/1:100.*. How should PE-B be
configured if CE-B is expecting a top tag of 200 and a bottom tag of 500?
  1. PE-B will require a SAP id of "sap 1/1/1:500*".
  2. PE-B will require a SAP id of "sap 1/1/1:100*".
  3. PE-B will require a SAP id of "sap 1/1/1:500.200".
  4. PE-B will require a SAP id of "sap 1/1/1:200*".
Correct answer: D
Question 3
Which of the following statements is false?
  1. VPLS is a bridged LAN service.
  2. VPLS provides L2 VPN services to CEs.
  3. VPLS is a point-to-point service where CEs are presented with point-to-point virtual circuits.
  4. CEs that are members of the same VPLS service instance communicate with each other as if they are connected via a bridged LAN.
Correct answer: C
Question 4
Click on the exhibit below.  
  
The following VPLS services and SAPs have been configured. Which of the following statements is true?
  1. All untagged frames will be dropped.
  2. The source MAC address of a frame with a top tag of 200 and bottom tag of 300 will be populated in VPLS 3.
  3. All frames with more than one tag will be dropped.
  4. The source MAC address of a frame with a single tag of 500 will be populated in VPLS 1.
  5. The source MAC address of a frame with a top tag of 100 will be populated in VPLS 2.
Correct answer: E
Question 5
Click on the exhibit below.  
  
If the SDP between R2 and R1 goes down, what devices will be reachable from R2 through the VPLS?
  1. Only R4 will be reachable through the VPLS.
  2. All devices will be reachable through the VPLS.
  3. R4 and R3 will remain reachable.
  4. No devices will be reachable.
Correct answer: A
Question 6
What is the default service-mtu for a VPLS service? 
  1. 1500
  2. 1514
  3. 1518
  4. It depends on the access port MTU.
  5. It depends on the network port MTU.
Correct answer: B
Question 7
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?
  1. The service MTU must be equal to or smaller than 1514 bytes.
  2. The service MTU must be 1514 bytes.
  3. The service MTU must be equal to or greater than 1514 bytes.
  4. The service MTU can be any value.
Correct answer: B
Explanation:
Question 8
What is the default fdb size for a VPLS service?
  1. 100
  2. 1
  3. 25
  4. 250
Correct answer: D
Question 9
Which OAM tool can be used to dynamically learn the MAC address of a CE device connected to a SAP within a VPLS service?
  1. oam mac-populate
  2. oam mac-ping
  3. oam mac-trace
  4. oam svc-ping
  5. oam cpe-ping 
Correct answer: E
Question 10
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?
  1. Relearning of the MAC address that was purged can only be done once customer traffic resumes.
  2. Relearning of the MAC address that was purged can only be done with the "oam mac-populate" command.
  3. 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.
  4. Relearning of the MAC address that was purged can only be done with the "oam mac-register" command.
Correct answer: B
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