MCQ IN COMPUTER SCIENCE & ENGINEERING

Detailed explanation-1: -The two main types of primary storage are ROM, which is non-volatile, and RAM, which is volatile . Non-volatile memory keeps its contents even when the computer is switched off. Volatile memory loses its contents when power is lost.

Detailed explanation-2: -Primary memory usually refers to Random Access Memory (RAM), while secondary storage refers to devices such as hard disk drives, solid state drives, removable “USB” drives, CDs, and DVDs.

Detailed explanation-3: -Unlike RAM, Read Only Memory (ROM) delivers both non-volatile and permanent primary storage. ROM retains its contents even if the device loses power. You cannot change the data on it, you can only read it. ROM is a more reliable form of storage, and it will often boot instructions and other mission-critical data.

Detailed explanation-4: -What is Primary Memory? Primary memory is the internal memory of a computer system. It stores and retrieves data, instructions, and information. The CPU directly and randomly accesses primary memory; hence primary memory is also referred to as Random Access Memory or RAM.

Detailed explanation-5: -Random access memory (RAM), graphic card memory and cache memory are common examples of primary storage devices.