2 Comments on “Which of the following is an invalid MAC address?”

1. Shirley Mathew says:

   March 31, 2014 at 10:30 am

   56:AD:BX:89:55:54

   X is not a hex number

   0-9 and A-F
   are valid

   
   
   
   0

   
   
   
   0
2. robby says:

   June 8, 2014 at 12:34 am

   Because MAC addresses are expressed in hexadecimal, only the numbers 0
   through 9 and the letters A through F can be used in them. If you get an exam
   question about identifying a MAC address and some of the answers contain letters
   and numbers other than 0 through 9 and the letters A through F, you can immediately
   discount those answers.

   
   
   
   0

   
   
   
   0