Question: Explain why flags are needed when we use variable-size frames. Compare and contrast byte-oriented and bit-oriented protocols. In a byte-oriented protocol, should we first unstuff

Explain why flags are needed when we use variable-size frames.

Compare and contrast byte-oriented and bit-oriented protocols.

In a byte-oriented protocol, should we first unstuff the extra bytes and then remove the flags or reverse the process?

Compare and contrast flow control and error control.

Compare and contrast HDLC with PPP.

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