Multiple choice technology

The data link layer :

  1. Provides a well-defined service interface to the network layer

  2. Deals with transmission errors

  3. Regulating the flow of data so that slow receivers are not swamped by fast senders

  4. All of the above
Reveal answer Fill a bubble to check yourself
D Correct answer
Explanation

The data link layer has three core functions: (1) providing a service interface to the network layer, (2) handling transmission errors via checksums/CRC and ARQ mechanisms, and (3) flow control to prevent fast senders from overwhelming slow receivers. All listed options are correct.

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