TEZPUR 2025 — Computer PYQ
TEZPUR | Computer | 2025Which of the following addresses is a physical address of a computer?
Choose the correct answer:
- A.
MAC address
(Correct Answer) - B.
IP address
- C.
Email address
- D.
IMEI number
MAC address
Explanation
In computer networking, a Physical Address (also known as a Hardware Address or MAC address) is a unique identifier assigned to a network interface controller (NIC) for communications at the data link layer of a network segment.
MAC Address: Stands for Media Access Control address. It is "burned" into the network hardware by the manufacturer and is permanent.
IP Address: A logical address used to identify devices on a network; it can change depending on the network you connect to.
Email Address: A unique identifier for a user account on a mail server.
IMEI Number: An International Mobile Equipment Identity number used to identify mobile devices (like smartphones), not standard computers.
If we let P represent the set of physical addresses, then:
MAC_address∈P,IP_address∈/P,Email_address∈/P,IMEI_number∈/P
Therefore, the MAC address is the only true physical address among the choices.