Challenge your understanding of computer memory types, functions, and basic concepts with this easy quiz. Perfect for beginners, this test covers RAM, ROM, storage, and how memory is used in computers.
Which type of computer memory is known for being volatile and is used to temporarily hold data while a computer is running?
Explanation: RAM (Random Access Memory) is volatile memory used to store data that the computer is currently working with, which is lost when the device is turned off. In contrast, ROM is non-volatile and permanent, DVD is an optical storage medium, and SSD is a form of long-term storage. Only RAM fits all aspects of the question.
Which type of memory in a computer retains its data even when power is switched off?
Explanation: ROM (Read Only Memory) keeps its data when the computer is turned off, making it non-volatile. RAM and cache both lose data once power is lost, so they are volatile. Clipboard is not a type of hardware memory; it's a temporary area in software for copied items.
A hard drive is best classified as which of the following?
Explanation: A hard drive is a storage device, which holds data permanently until deleted or rewritten by the user. Primary memory refers to RAM, cache memory is a smaller, faster type of volatile memory, and ROM refers to read-only memory. Only 'storage device' accurately describes a hard drive.
When you are editing a document, which kind of memory stores your changes before you click Save?
Explanation: RAM temporarily holds changes you make to a document in real time before saving it to permanent storage. USB and SSD are types of permanent storage, while EPROM is a programmable read-only memory used for firmware, not active document editing. RAM is the only type involved in this scenario.
Which of the following is a typical use of ROM in a computer?
Explanation: ROM stores essential instructions needed to start the computer, such as the initial boot process. Unsaved game progress and running temporary files are stored in RAM, while downloaded videos are typically saved to permanent storage, not ROM. Boot-up instructions are only kept in ROM.
What is the primary function of cache memory in computers?
Explanation: Cache memory stores data that is often used by the processor, allowing quicker access and faster performance. It doesn't back up files, store documents long-term, or directly affect network speed. Only increasing speed for frequently accessed data is correct.
Which of the following is NOT a type of computer memory?
Explanation: Spreadsheet refers to application software, not a physical or logical memory type. RAM, cache, and ROM are all types of memory storage within a computer system. This distinction makes 'spreadsheet' the only option that doesn't fit.
When a computer uses part of the hard drive to act as extra memory, this is called what?
Explanation: Virtual memory allows a system to use some storage space as an extension of RAM, improving multitasking. Flash memory is a kind of solid-state storage, static memory refers to a kind of RAM known as SRAM, and optical memory describes storage like CDs or DVDs. Only virtual memory matches the described function.
Which unit is commonly used to measure the size of computer memory?
Explanation: Gigabyte is a standard unit for measuring memory and storage capacity. Hertz measures frequency, litre is for volume of liquid, and watt is for power. Only gigabyte relates to computer memory size.
Which device below is an example of non-volatile memory?
Explanation: SD cards keep data even when power is off, making them a non-volatile memory type. SRAM and DRAM are types of volatile memory; both lose information without power. Clipboard is a software feature, not a hardware memory device, and doesn't persist data after shutdown.