Explanation

• Full Name: Vinton Gray Cerf
• Known as: Father of Internet
• Born: 23 June 1943
• Major Contribution: TCP/IP protocol development
• Award: National Medal of Technology (1997)

Last verified on 20-06-2026

Explanation

• CPU stands for Central Processing Unit.
• It is the main part of a computer that processes all instructions.
• It is considered the brain of the computer system.
• It performs all calculations and decision-making tasks.
• It controls the operations of all hardware and software.
• It is located on the motherboard.

Last verified on 10-06-2026

Explanation

• RAM and Cache are volatile memories.
• It means their data is lost when power is turned off.
• Volatile memory requires continuous power to retain data.
• RAM is used for running programs and storing temporary data.
• Cache is a high-speed memory that stores frequently used data for the CPU.

Additional information:

• ROM is non-volatile and retains data without power.

Last verified on 16-02-2026

Explanation

• ROM (Read Only Memory) is a non-volatile storage device.
• It stores data permanently even without power.

Additional information:

• RAM (Random Access Memory) is a volatile storage device.
• It loses data when power is off.

Last verified on 17-06-2026

Explanation

• Communication between a keyboard and computer is simplex.
• It means data flows in one direction only — from keyboard to computer.
• The computer does not send data back to the keyboard during typing.

Additional information:

There are 3 main data transmission modes:

1. Simplex: Data flows in one direction only (e.g., keyboard to computer).
2. Half-Duplex: Data can flow both ways, but not at the same time (e.g., walkie-talkies).
3. Full-Duplex: Data flows both ways simultaneously (e.g., telephone conversations).

Last verified on 17-06-2026