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Which of the following is correct for the destination address $4 \mathrm{~A}: 30: 10: 21: 10: 1 \mathrm{~A}$ ?

  1. unicast address
  2. multicast address
  3. broadcast address
  4. unicast and broadcast address
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MAC address consists of $6$ Byte or $48$ bit.To identify MAC address is unicast, multicast, or broadcast we have to check first $8$ bit of the MAC address.

  • if the LSB of the first byte is $0$ then it is unicast.
  • if the LSB of the first byte is $1$ then it is multi-cast.
  • if all the bits are $1$ in MAC address then it is broadcast.

Here given MAC address is $4A:30:10:21:10:1A$. we have to convert the first octet into binary representation and check its LSB bit is $0/1$.

so $4A$ can be written as:$01001010$, its LSB bit is $0$ so it is unicast address.

Option (A) is correct.

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