Solution

The correct answer is A, C, D, B

Key Points

To determine the correct order of fields in a Frame Relay frame format, let's understand the structure of a typical Frame Relay frame:

• Flag (A)
  • The frame starts with a Flag field, which indicates the beginning of the frame.
• Address (C)
  • The Address field follows the Flag field and contains the Data Link Connection Identifier (DLCI) and other control information.
• Information (D)
  • Next is the Information field, which carries the payload data.
• Frame Check Sequence (FCS) (B)
  • The frame ends with the FCS field, which is used for error detection.

So, the correct order is: A, C, D, B