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Master the Data Link Layer

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Questions and Answers

Which layer of the OSI model is the data link layer?

Layer 1

Layer 3

Layer 4

Layer 2 (correct)

What is the main function of the data link layer?

Transferring data between nodes on a network segment (correct)

Addressing global network entities

Routing data between networks

Detecting errors in the physical layer

What is the scope of data-link frames?

They are used for global addressing

They are limited to a single node (correct)

They are used for inter-network routing

They cross the boundaries of a local area network

What analogy is used to describe the role of the data link layer?

A neighborhood traffic cop Signup and view all the answers

What type of errors can the data link layer detect and possibly correct?

Physical layer errors Signup and view all the answers

Which one of the following best describes a communication protocol?

A system of rules that allows entities to transmit information Signup and view all the answers

What does a communication protocol define?

The rules, syntax, semantics, and synchronization of communication Signup and view all the answers

How can communication protocols be implemented?

By hardware, software, or a combination of both Signup and view all the answers

What do well-defined message formats in communication protocols ensure?

Exchanging various messages with specific meanings Signup and view all the answers

How are communication protocols agreed upon?

By the parties involved Signup and view all the answers