Multiple choice

__________ is a connection oriented protocol which supports both switched virtual circuits and permanent ones.

  1. ARP

  2. X.21

  3. X.25

  4. None of the above

Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

X.25 is a connection oriented protocol which supports both switched virtual circuits and permanent ones. X.25 is a popular packet switching protocol used in ISDN, consisting of physical, frame and packet levels.