This Computer Awareness quiz on Memory and Storage puts 12 multiple-choice questions to you, the verified MCQs published with GK24's note on the topic. Every question carries a full explanation of why the correct option is right and why the other options are wrong, so you learn the fact behind the answer rather than the letter. Attempt it right after reading the note, keep to the timer, and use the explanations at the end to mark what needs another look. Sit it again before the exam as a quick revision of the topic.
12 questions with answers and explanations
Which of the following is the fastest memory in a computer system?
A register is built into the CPU itself and holds the word the arithmetic and logic unit is operating on at that instant, so it is read and written in a single clock cycle.
Read the full explanation →How many bits make one nibble?
A nibble is half a byte, that is four binary digits, and it matters because one nibble is written as exactly one hexadecimal digit, from 0 to F. That is why memory addresses in hexadecimal are read four bits at a time.
Read the full explanation →Which type of memory has to be refreshed thousands of times per second to retain its contents?
Dynamic RAM stores each bit as a charge on a very small capacitor, and that charge leaks away in a few milliseconds, so the memory controller has to read and rewrite every cell continuously.
Read the full explanation →The contents of an EPROM chip are erased by exposing it to
An Erasable Programmable Read Only Memory chip carries a small quartz window over the silicon; ultraviolet light shone through that window releases the trapped charge from every cell at once and returns the chip to its blank state, after which it can be programmed again.
Read the full explanation →One terabyte is equal to how many gigabytes?
Every step in the ladder of storage units multiplies by 1,024, because 1,024 is 2 raised to the power 10 and memory is addressed in binary.
Read the full explanation →Which of the following is an example of volatile memory?
Random Access Memory holds a bit only while it is powered, whether the cell is a flip-flop in static RAM or a leaking capacitor in dynamic RAM.
Read the full explanation →What is the storage capacity of a standard single-sided, single-layer DVD?
A Digital Versatile Disc uses a shorter wavelength laser and finer pits than a compact disc, so one side with one recording layer holds about 4.7 GB; a double-layer disc of the same size holds roughly 8.5 GB.
Read the full explanation →Cache memory is placed between which two units of a computer?
Cache is a small block of static RAM that keeps the instructions and data most recently used by the processor.
Read the full explanation →Which technique allows a computer to run programs larger than its physical RAM by using part of the hard disk as memory?
The operating system reserves an area of the hard disk, called the swap space or the page file, and moves pages a program is not actively using out to it.
Read the full explanation →A solid state drive stores data using
An SSD is built from flash memory, itself a block-erasable form of EEPROM, which traps charge in floating-gate cells.
Read the full explanation →The storage capacity of a standard 3.5-inch floppy disk is
The 3.5-inch high-density floppy disk, the square plastic diskette with a metal shutter, was formatted to 1.44 MB, and that figure is still asked in computer awareness papers because it anchors the small end of the capacity ladder.
Read the full explanation →Which memory is non-volatile and can be erased and rewritten electrically, byte by byte, without removing the chip from the circuit?
Electrically Erasable Programmable Read Only Memory is erased by applying a voltage, one byte at a time, while the chip stays soldered in place, which is why it is used for settings that must survive a power cut and yet be changed occasionally, such as the configuration data of a…
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