NIELIT 2017 DEC Scientific Assistant A - Section B: 46

Question

An Ethernet destination address $07-01-12-03-04-05$ is : 

• A. Unicast address
• B. Multicast address
• C. Broadcast address
• D. All of the options

Answer 1

Here, Shortcut method to find out using MAC address is
The first octant of MAC address written in binary format.
07=0000 0111
The least significant bit of first octant 0 then uni cast.

The least significant bit of first octant 1 then Multi cast . 

entire 8 bits are 1's of first  octant  then broadcast.

Option B

Comments

The broadcast MAC address is FF:FF:FF:FF:FF:FF, which is the hexadecimal value of all bits set to 1.