Computer Storage Units: Smallest to Largest Quiz and Flashcards

Questions and Answers

What is the smallest unit of data in computing that can hold a value of 0 or 1?

Bit

How many bits are in a nibble?

Which of the following units represents a power of 10 rather than a power of 2?

Megabyte

What is the relationship between data storage and data transfer units?

Data storage uses bytes, and data transfer uses bits. Signup and view all the answers

What is the relationship between kilobits per second (Kbps) and megabits per second (Mbps)?

Mbps is 1000 times larger than Kbps. Signup and view all the answers

What is the relationship between megahertz (MHz) and gigahertz (GHz) in terms of processing speed?

GHz is 1000 times larger than MHz. Signup and view all the answers

Which of the following is not a common unit used to measure data storage capacity?

Kilowatts (KW) Signup and view all the answers

If a file is 2.5 $GiB$ in size, approximately how many $MB$ would it be?

25,600 MB Signup and view all the answers

Which of the following is not a unit used to measure data transfer rates?

Gigabytes per second (GBps) Signup and view all the answers

If a computer has a processor speed of 3.2 $GHz$, how many cycles per second is that?

3,200,000,000 cycles/s Signup and view all the answers

What is the relationship between bits and bytes when discussing data transfer?

Bits are used to measure data transfer rates, while bytes are used to measure data storage. Signup and view all the answers

What is the relationship between kilobytes (KB) and kibibytes (KiB) in terms of data storage?

1 KB = 1,000 bytes, while 1 KiB = 1,024 bytes. Signup and view all the answers

If a computer has a data transfer rate of 100 $Mbps$, how many Kbps is that?

1,000 Kbps Signup and view all the answers

Which of the following is not a common unit used to measure processing speed?

Petahertz (PHz) Signup and view all the answers

What is the relationship between megabits per second (Mbps) and megabytes per second (MBps) in terms of data transfer rates?

1 Mbps = 0.125 MBps Signup and view all the answers

Study Notes

Basic Units of Data

A bit is the smallest unit of data in computing, holding a value of 0 or 1.
A byte is equivalent to 8 bits and is another basic unit of data.
A nibble is half of a byte, consisting of 4 bits, and is often used to represent a single hexadecimal character.

Large Units of Data

Kilobytes (KB), Megabytes (MB), Gigabytes (GB), Terabytes (TB), and Petabytes (PB) are larger units of data, with each unit being approximately 1000 times larger than the previous one.
1 MB = 1000 KB, 1 GB = 1000 MB, 1 TB = 1000 GB, and 1 PB = 1000 TB.
In digital storage, these units represent powers of 2, rather than powers of 10.
Kibibytes (KiB), mebibytes (MiB), and gibibytes (GiB) are used to represent powers of 2, with 1 KiB = 1,024 bytes.

Data Transfer Rates

Data transfer rates measure the amount of data transferred between components in a computer or between computers over a network.
Kilobits per second (Kbps), megabits per second (Mbps), gigabits per second (Gbps), and terabits per second (Tbps) are units of data transfer rates.
1 Kbps = 1000 bits per second, 1 Mbps = 1000 kilobits per second, 1 Gbps = 1000 megabits per second, and 1 Tbps = 1000 gigabits per second.

Data Storage vs Data Transfer

Bytes are used to measure data storage, with a big B.
Bits are used to measure data transfer, with a little b.

Processing Speed

Megahertz (MHz) and gigahertz (GHz) are units of processing speed.
1 MHz represents one million cycles per second, and 1 GHz represents one billion cycles per second.

Data Storage Units Quiz