Multiple choice

A 1250 byte transmission unit carried on the wire over the network is the result of sending a message with a protocol stack with DNS, UDP, IP, PPP, and SONET. Each protocol header is 20 bytes long. What percentage of the network bandwidth on the wire is spent carrying the message data?

  1. 92.6

  2. 93

  3. 92

  4. 8

  5. 7.4

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

This is correct as the headers comprise in total of 100 bytes, so message is 1150 bytes. Hence, percentage of message is (1150/1250)X100 = 92%.