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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 16 of 32

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Q151.
Sending of a IP packet from host 1 to host 2 where both are of same LAN but the packet is transferred through different intermediate LANs is called ..................

a.

Tunneling

b.

Routing

c.

Diverting

d.

Forwarding

Discuss
Answer: (a).Tunneling
Q152.
In CRC there is no error if the remainder at the receiver is _____.

a.

zero

b.

non-zero

c.

the quotient at the sender

d.

equal to the remainder at the sender

Discuss
Answer: (a).zero
Q153.
Which of the following refers to the terms "residual error rate"?

a.

signal to noise ratio divided by the ratio of energy per bit to noise per hertz

b.

the number of bit errors per twenty four hours of continuous operation on an asynchronous line

c.

the probability that one or more errors will be detected when an error detection mechanism is used

d.

the probability that one or more errors will be undetected when an error detection scheme is used

Discuss
Answer: (d).the probability that one or more errors will be undetected when an error detection scheme is used
Q154.
Which of the following summation operations is performed on the bits to check an error-detecting code?

a.

Codec

b.

Checksum

c.

Attenuation

d.

Coder-decoder

Discuss
Answer: (b).Checksum
Q155.
An error-detecting code inserted as a field in a block of data to be transmitted is known as

a.

Checksum

b.

flow control

c.

Error detecting code

d.

Frame check sequence

Discuss
Answer: (d).Frame check sequence
Q156.
Error rate is

a.

the ratio of the number of data units in error to the total number of data units

b.

a check bit appended to an array of binary digits to make the sum of all the binary digits

c.

an error-detecting code based on a summation operation performed on the bits to be checked

d.

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the errors is detected

Discuss
Answer: (a).the ratio of the number of data units in error to the total number of data units
Q157.
Error detection at a data link level is achieved by

a.

bit stuffing

b.

equalization

c.

Hamming codes

d.

cyclic redundancy codes

Discuss
Answer: (d).cyclic redundancy codes
Q158.
If the ASCII character G is sent and the character D is received, what type of error is this?

a.

burst

b.

single-bit

c.

multiple-bit

d.

recoverable

Discuss
Answer: (a).burst
Q159.
Data link layer retransmits the damaged frames in most networks. If the probability of a frame's being damaged is p, what is the mean number of transmissions required to send a frame if acknowledgements are never lost ?

a.

1/ (1 - F)

b.

P I (K + 1)

c.

K I (K - P)

d.

KIK (1 + F)

Discuss
Answer: (a).1/ (1 - F)
Q160.
Parity bit is

a.

the ratio of the number of data units in error to the total number of data units

b.

a check bit appended to an array of binary digits to make the sum of all the binary digits

c.

an error-detecting code based on a summation operation performed on the bits to be checked

d.

a code in which each expression conforms to specific rules of construction, so that if certain errors occur in an expression, the resulting expression will not conform to the rules of construction and thus the presence of the errors in detected

Discuss
Answer: (b).a check bit appended to an array of binary digits to make the sum of all the binary digits
Page 16 of 32

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