Q. HDLC is an acronym for _______.
✅ Correct Answer: (B)
High-level data link control
Data Communication and Networking MCQs and Notes
Q. For Stop-and-Wait ARQ, for 10 data packets sent, _______ acknowledgments are needed.
✅ Correct Answer: (A)
exactly 10
Q. ARQ stands for _______.
✅ Correct Answer: (B)
Automatic repeat request
Q. In Go-Back-N ARQ, if frames 4, 5, and 6 are received successfully, the receiver may send an ACK _______ to the sender.
✅ Correct Answer: (C)
7
Q. In a Go-Back-N ARQ, if the window size is 63, what is the range of sequence numbers?
✅ Correct Answer: (A)
0 to 63
Q. A timer is set when _____________is sent.
✅ Correct Answer: (A)
Packet
Q. Flow control is needed to prevent
✅ Correct Answer: (C)
Overflow of receiver buffer
Q. When a primary device wants to send data to a secondary device, it needs to first send _______ frame.
✅ Correct Answer: (D)
ENQ
Q. Regulation of the rate of transmission of data frames is known as
✅ Correct Answer: (B)
Data rate control
Q. In sliding window, if the window size is 63, what is the range of sequence numbers?
✅ Correct Answer: (A)
0 to 63