Computer | MCQs

Explanation

The computer mouse was invented and developed by Douglas Engelbart, with the assistance of Bill English, during the 1960s.

Douglas Engelbart was an American engineer.

Explanation

SSD has no moving parts, allowing faster data access compared to HDDs.

It offers high-speed read/write performance, ideal for modern computing needs

Explanation

The CPU directly accesses RAM to fetch and execute instructions quickly.

RAM is volatile memory, meaning it temporarily stores data being used or processed.

Explanation

The CPU (Central Processing Unit) is responsible for processing data, not for long-term storage.

Permanent storage is handled by devices like hard drives or SSDs, not the CPU.

Explanation

Assembly language is a low-level language that uses mnemonics to represent machine-level instructions.

It is hardware-specific and closer to binary code, offering more control over hardware.

Explanation

The Control Unit (CU) directs the flow of data and instructions within the CPU.

It manages communication between the memory, ALU, and input/output devices.

Explanation

The operating system (OS) manages hardware resources and provides a platform to run application software.

It acts as an interface between the user and the computer hardware.

Explanation

System software includes the operating system and core programs that manage hardware and software resources.

It helps the computer run smoothly and provides a platform for application software to operate.

Explanation

To find the decimal equivalent of the binary number 1011:

(1 × 2³) + (0 × 2²) + (1 × 2¹) + (1 × 2⁰)

= (1 × 8) + (0 × 4) + (1 × 2) + (1 × 1)

= 8 + 0 + 2 + 1

= 11

Explanation

The Session layer is the 5th layer of the OSI (Open Systems Interconnection) model.

It is responsible for establishing, managing, and terminating sessions between two communicating devices.

The OSI (Open Systems Interconnection) model has 7 layers, which are:

1. Physical
2. Data Link
3. Network
4. Transport
5. Session
6. Presentation
7. Application