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Link Layer Communication MCQ

Framing in the data link layer separates a message from one source to a destination, or from other messages going from other sources to other destinations?

Answer

Correct Answer: True

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Which refers to a set of procedures used to restrict the amount of data that the sender can send before waiting for acknowledgment?

Answer

Correct Answer: Flow control

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Which protocol uses common transfer modes that can be used in different configurations: Normal Response mode (NRM) and asynchronous balanced mode (ABM?)

Answer

Correct Answer: HDLC

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Which frames are used to transport user data and control information relating to user data (piggybacking)?

Answer

Correct Answer: I-frames

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Which of the data link layer is based on automatic repeat request, which is the retransmission of data?

Answer

Correct Answer: Error control

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Which protocol is responsible for establishing, maintaining, configuring, and terminating links?

Answer

Correct Answer: Link control protocol

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In which the receiver needs to know only that the received code word is invalid?

Answer

Correct Answer: Error detection

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In which we need to know the exact number of bits that are corrupted and more importantly, their location in the message?

Answer

Correct Answer: Error correction

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In a linear block code, the exclusive OR (XOR) of any two valid code words creates another valid code word.

Answer

Correct Answer: True

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Which is known as bit-oriented protocol?

Answer

Correct Answer: HDLC

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In which type of framing, we need a delimiter (flag) to define the boundary of two frames?

Answer

Correct Answer: Variable-size framing

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Select the correct IPCP packet for the given code value Ox03?

Answer

Correct Answer: Configure-nak

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Which of these in TCP is achieved through the use of three simple tools, checksum, acknowledgment and time-out?

Answer

Correct Answer: Error detection and correction

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An error-detecting code can detect only the types of errors for which it is designed; other types of errors may remain undetected.

Answer

Correct Answer: True

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Internet users who need to connect their home computers to the server of an Internet service provider use?

Answer

Correct Answer: PPP

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Which does not provide a sophisticated addressing mechanism to handle frames in a multipoint configuration?

Answer

Correct Answer: PPP

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