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Welcome to the Data Link Layer MCQs Page

Dive deep into the fascinating world of Data Link Layer with our comprehensive set of Multiple-Choice Questions (MCQs). This page is dedicated to exploring the fundamental concepts and intricacies of Data Link Layer, a crucial aspect of Networking. In this section, you will encounter a diverse range of MCQs that cover various aspects of Data Link Layer, from the basic principles to advanced topics. Each question is thoughtfully crafted to challenge your knowledge and deepen your understanding of this critical subcategory within Networking.

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Check out the MCQs below to embark on an enriching journey through Data Link Layer. Test your knowledge, expand your horizons, and solidify your grasp on this vital area of Networking.

Note: Each MCQ comes with multiple answer choices. Select the most appropriate option and test your understanding of Data Link Layer. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

Data Link Layer MCQs | Page 14 of 32

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Q131.
In SONET, for each frame, the bytes are transmitted __________.

a.

from left to the right, top to bottom

b.

from right to the left, bottom to top

c.

from left to the right, bottom to top

d.

from right to the left, top to bottom

Discuss
Answer: (a).from left to the right, top to bottom
Q132.
In SONET, for each byte, the bits are transmitted ____________.

a.

from least significant to the most significant

b.

from most significant to the least significant

c.

two at a time

d.

three at a time

Discuss
Answer: (b).from most significant to the least significant
Q133.
Each ________in a SONET frame can carry a digitized voice channel.

a.

bit

b.

byte

c.

frame

d.

none of the above

Discuss
Answer: (b).byte
Q134.
Line overhead consists of ________ bytes.

a.

1

b.

6

c.

9

d.

18

Discuss
Answer: (d).18
Q135.
The path overhead consists of ______ bytes.

a.

1

b.

6

c.

9

d.

18

Discuss
Answer: (c).9
Q136.
In ________ APS, there are normally two lines: one working line and one protection line. Both lines are active all the time.

a.

one-plus-one

b.

one-to-one

c.

one-to-many

d.

none of the above

Discuss
Answer: (a).one-plus-one
Q137.
In ______ APS, there is one working line and one protection line. The data are normally sent on the working line until it fails.

a.

one-plus-one

b.

one-to-one

c.

one-to-many

d.

none of the above

Discuss
Answer: (b).one-to-one
Q138.
In ________APS, there is only one protection line for many working lines. When a failure occurs in one of the working lines, the protection line takes control until the failed line is repaired.

a.

one-plus-one

b.

one-to-one

c.

one-to-many

d.

none of the above

Discuss
Answer: (c).one-to-many
Q139.
A control character is sent at the beginning as well as at the end of each block in the synchronous-transmission in order to

a.

Synchronize the clock of transmitter and receiver.

b.

Supply information needed to separate the incoming bits into individual character.

c.

Detect the error in transmission and received system.

d.

Both a and c

Discuss
Answer: (b).Supply information needed to separate the incoming bits into individual character.
Q140.
Check sum is used for

a.

Error correction

b.

Error detection

c.

Both a & b

d.

None of these

Discuss
Answer: (b).Error detection
Page 14 of 32

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