Test: Computer: Storage and Memory Device - Class 4 MCQ

Hard Disk Drives (HDDs) primarily use magnetic storage to read and write data. They consist of spinning disks coated with magnetic material, allowing for high-capacity storage solutions.

A Memory Stick is primarily used for transferring data between digital devices. Its small size and varying capacities make it convenient for users needing to move files easily.

A CD Writer is used to write data onto CDs. It enables users to create custom CDs for storing various types of files, including multimedia and documents.

A Pen Drive, also known as a USB flash drive, is highly portable and convenient for transferring data between computers. Its compact size allows it to easily fit in a pocket.

Secondary memory, or external memory, is intended for long-term data storage. It retains information even when the computer is powered off, addressing the limitations of primary memory capacity.

A single layer Blu-ray Disk can hold up to 25 GB of data. This high capacity is advantageous for storing large video files and other multimedia content, distinguishing it from DVDs and CDs.

Read Only Memory (ROM) is used to store data permanently. It retains its content even when the computer is turned off, making it essential for storing critical instructions necessary for booting the system.

A Hard Disk Drive (HDD) is generally fixed inside a computer and not easily removable. It is essential for providing substantial storage capacity for programs and files.

The Basic Input/Output System (BIOS) is crucial for initializing hardware components and facilitating communication between the computer's hardware and its operating system. It is stored in ROM and is fundamental for booting up the computer.

Machine code refers to the binary format that data is converted into so that computers can understand and process it. This transformation is essential for executing instructions and handling data effectively.

Primary memory, specifically RAM, allows both reading and writing of data while the computer is operational. However, it is temporary and loses its content when the power is turned off.

A bit is the smallest unit of data in a computer, represented as either a 0 or 1. It forms the foundation of all digital data processing, allowing computers to perform complex operations through combinations of bits.

Random Access Memory (RAM) is a type of internal memory that temporarily holds data and instructions while a computer is in use. Once the computer is turned off, the data stored in RAM is erased.

ROM stands for Read Only Memory, which is a type of permanent memory that stores essential instructions for the computer. Unlike RAM, the data in ROM is not erased when the computer is turned off.

Blu-ray Disks have the highest storage capacity among the options listed, with single-layer disks capable of holding 25 GB and dual-layer disks up to 50 GB, making them ideal for high-definition content.

Hard disks offer very large storage capacities compared to USB flash drives, floppy disks, or Blu-ray disks, making them suitable for storing large multimedia files such as videos, music, and photos. Hard drives are widely used for this purpose due to their balance of cost and storage space.

The Hard Disk is not a type of primary memory; it is classified as secondary memory. In contrast, RAM and ROM are both types of primary memory that play different roles in data processing.

The main difference is that data refers to raw, unorganized facts and figures, while information is data that has been processed and organized to provide meaning and usefulness.

A computer takes input in binary form, represented by 0s and 1s. This binary system is fundamental to how computers process and store all forms of data.

A standard Compact Disk (CD) can store approximately 640 MB of data. CDs are commonly used for audio and video files, as well as software distribution.