Question

in HDLC,__ is the widely used mode​

Answer 1

Explanation:

normal response mode (NRM) and asynchronous balanced mode (ABM).

Answer 2

In HDLC, Asynchronous Balanced Mode (ABM) is the widely used mode.

Explanation:

• The full form of HDLC is High-Level Data Link Control.

• There are three types of Data Transfer Modes. They are

1. Normal Response Mode (NRM)
2. Asynchronous Response Mode (ARM)
3. Asynchronous Balanced Mode (ABM)

• In this, ABM  is a type of balanced configuration in which the secondary station can initiate data transfer without any explicit permission or command from the primary station.

• ABM gives a well-grounded point-to-point link service.

• ABM mode starts or initiates the transmission in a balanced configuration. It is a widely used mode in High-Level Data Link Control. (HDLC)