Nokia Nokia Certifications 4A0-100 Questions & Answers

• Question 311:

  Which of the following best describes an Ethernet bridge?

  A. A passive device simply used to connect two or more cables. Does not generate or amplify any signals.

  B. A device that receives and retransmits a signal out its other ports, but does not do any Layer 2 analysis of the data.

  C. A device that receives a signal and based on the Layer 2 destination address, makes a decision on which ports the signal should be retransmitted.

  D. A device that receives a signal and based on the Layer 3 destination address, makes a decision on which ports the signal should be retransmitted.

  Correct Answer: C

• Question 312:

  (Click the Exhibit Button below) An Ethernet Local Area Network (LAN) consists of the following components:

  -

  Four 24-port hubs and Two 16-port switches How many broadcast domains are on this LAN?

  B.

  2

  C.

  5

  D.

  32

  

  Correct Answer: A

• Question 313:

  As described by the CSMA/CD algorithm, what is the first thing to happen when Host A and Host B begin transmitting data at the same time?

  A. Host A and B will generate a jam signal.

  B. Listening hosts will request retransmission.

  C. Host A or B will retry the transmission.

  D. A back-off timer is started by Host A or B.

  Correct Answer: A

• Question 314:

  An Ethernet Local Area Network (LAN) consists of the components shown in the diagram.

  How many broadcast and collision domains are on this LAN?

  

  A. 9 broadcast domains, 3 collision domains.

  B. 3 broadcast domains, 3 collision domains.

  C. 3 broadcast domains, 9 collision domains.

  D. 1 broadcast domain, 9 collision domains.

  Correct Answer: C

• Question 315:

  What must occur for a LAG to become operational?

  A. There must be multiple ports assigned to the LAG.

  B. All ports in the LAG must be configured with the same characteristics.

  C. Auto-negotiation must be enabled on all ports in the LAG.

  D. All of the above.

  Correct Answer: B

• Question 316:

  If a 4-port LAG is configured with the option of 'port-threshold 2' and 'action down' what will happen if the total operational links in the LAG is 2?

  A. If dynamic-cost is enabled it will adjust the cost for routing protocols such as OSPF.

  B. If dynamic-cost is not enabled it will adjust the cost for routing protocols such as OSPF by dividing the link bandwidth by 2.

  C. The LAG will be changed to an operational state of 'down'.

  D. The LAG will function with only 2 ports. There will be no change to the routing metric.

  Correct Answer: C

• Question 317:

  What is available for auto completion of commands within the CLI on the Nokia 7750 SR Service Router?

  A. Type the first letters of the command, then press Ctrl C

  B. Type the first letters of the command, then press Esc

  C. Type the first letters of the command, then press Tab

  D. Type the first letters of the command, then type ?

  Correct Answer: C

• Question 318:

  Which of the following is a File command in the File System context of the Command Line Interface (CLI)?

  A. time-display

  B. help

  C. type

  D. terminal

  Correct Answer: C

• Question 319:

  You are working from a particular Command Line Interface (CLI) context, and want to see the commands available from your current context. What command can you issue to view this information?

  A. view tree

  B. tree

  C. info detail

  D. info

  Correct Answer: B

• Question 320:

  Which of the following user interface sessions are accessible through Telnet and Secure Shell (SSH) on the Nokia 7750 SR and 7450 ESS?

  A. Graphic User Interface (GUI).

  B. Node Management Terminal Interface (NMTI).

  C. Command Line Interface (CLI).

  D. All of the above.

  Correct Answer: C