☰
GkSeries.com
✕

Q.

X.21 protocol consists of

[A] Physical and frame levels
[B] Frame and packet levels
[C] Physical, frame and packet levels
[D] Only physical level
Answer & Explanation
Option: [D]

DATA COMMUNICATION & COMPUTER NETWORKS – MULTIPLE CHOICE QUESTIONS AND ANSWERS | 250 MCQS

Click Here to Read more questions