# Computer And Media Studies: Quiz 2

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This is the second quiz for Computer and Media Studies. It covers the file type, memory and sound lectures.

• 1.

### How many bits are in the number 1001?

• A.

1

• B.

2

• C.

3

• D.

4

D. 4
Explanation
The number 1001 is a four-digit binary number. Each digit in a binary number represents a bit, so there are four bits in the number 1001.

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• 2.

### How many bytes are in 1MB (megabyte)?

• A.

10

• B.

1,000

• C.

1,000,000

• D.

1,000,000,000

C. 1,000,000
Explanation
There are 1,000,000 bytes in 1MB (megabyte). This is because the prefix "mega" represents a factor of 1,000,000 in the International System of Units (SI). Therefore, when converting from megabytes to bytes, we multiply the value by 1,000,000.

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• 3.

### How many megabytes does a CD ROM hold?

• A.

1

• B.

10

• C.

100

• D.

650

D. 650
Explanation
A CD ROM typically holds 650 megabytes of data. This is a standard capacity for most CDs, allowing them to store a significant amount of information such as music, videos, or software.

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• 4.

### RAM is like ____________ while ROM is like _________________.

• A.

Short term memory; long term memory

• B.

• C.

BIOS; Hardware

• D.

Long term memory; short term memory

A. Short term memory; long term memory
Explanation
RAM is like short term memory because it is used to temporarily store data that is actively being used by the computer. It allows for quick access and retrieval of information, but the data is not permanently stored and is lost when the computer is powered off. On the other hand, ROM is like long term memory because it stores permanent data that is essential for the computer's operation, such as the BIOS. This data is not lost when the computer is powered off and remains stored for long-term use.

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• 5.

### There are 10,000 kilobytes (KB) in 1 megabyte (MB).

• A.

True

• B.

False

B. False
Explanation
The given statement is false. There are actually 1,024 kilobytes (KB) in 1 megabyte (MB), not 10,000 kilobytes. This is because computers use binary numbering system, where 1 kilobyte is equal to 2^10 bytes, which is 1,024 bytes. Therefore, 1 megabyte is equal to 1,024 kilobytes, not 10,000 kilobytes.

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• 6.

### A Microsoft word file is about 30 megabytes (MB).

• A.

True

• B.

False

B. False
Explanation
The statement is false because a Microsoft Word file is typically much smaller than 30 megabytes (MB). Word files are generally small in size, usually ranging from a few kilobytes to a few megabytes depending on the content and formatting.

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• 7.

### A minute of MP3 audio is about 1 megabyte (MB).

• A.

True

• B.

False

A. True
Explanation
MP3 audio files are compressed audio files that use a lossy compression algorithm. This algorithm reduces the file size by removing certain parts of the audio data that are considered less important to human perception. On average, a minute of MP3 audio is compressed to about 1 megabyte (MB) in size. Therefore, the statement that a minute of MP3 audio is about 1 megabyte (MB) is true.

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• 8.

### ROM stands for Read Only Memory.

• A.

True

• B.

False

A. True
Explanation
ROM stands for Read Only Memory, which is a type of computer memory that is non-volatile and cannot be modified or written to. It contains permanent data that is stored during manufacturing and cannot be changed by normal computer operations. This memory is used to store firmware, boot loaders, and other essential system software. Therefore, the statement "ROM stands for Read Only Memory" is true.

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• 9.

### A bit is...

• A.

The way computers store infrequently changing information like saved files and programs that are not in current use.

• B.

A binary digit taking the value of 1 or 0.

• C.

It allows the user to operate a computer with images rather than text commands.

• D.

Software that identifies, tests, and operates system devices and other hardware.

B. A binary digit taking the value of 1 or 0.
Explanation
A bit is a binary digit that can have a value of either 1 or 0. In computer systems, information is stored and processed using bits, which represent the most basic units of data. By using combinations of 1s and 0s, computers are able to represent and manipulate various types of data, such as numbers, text, and images. The concept of bits forms the foundation of digital computing and is essential for understanding how computers store and process information.

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• 10.

### A byte is...

• A.

A series of 8 binary digits or 8 bits.

• B.

One billion bits.

• C.

The software between BIOS and applications. It is responsible for the management and coordination of programs.

• D.

It allows the user to operate a computer with images rather than text commands.

A. A series of 8 binary digits or 8 bits.
Explanation
A byte is a unit of digital information that consists of 8 binary digits or 8 bits. It is the fundamental building block of computer memory and storage, representing a single character of text or a small amount of numerical data. Bytes are used to measure and represent data size, file size, and memory capacity in computer systems.

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• 11.

### A gigabyte is...

• A.

One byte.

• B.

Two bytes.

• C.

One million bytes.

• D.

One billion bytes.

D. One billion bytes.
Explanation
A gigabyte is a unit of digital information storage capacity that is equal to one billion bytes. It is commonly used to measure the size of computer files and storage devices.

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• 12.

### RAM is...

• A.

The place in a computer where the operating system, application, and data in current use are kept.

• B.

The way computers store infrequently changing information like saved files and programs that are not in current use.

• C.

Software that identifies, tests, and operates system devices and other hardware.

• D.

It allows the user to operate a computer with images rather than text commands.

A. The place in a computer where the operating system, application, and data in current use are kept.
Explanation
RAM, or Random Access Memory, is a type of computer memory that is used to temporarily store data that the computer is actively using. It is a volatile memory, meaning that its contents are lost when the computer is powered off or restarted. RAM is responsible for holding the operating system, applications, and data that are currently in use by the computer. This allows for quick access and retrieval of information, which helps in the smooth functioning of the computer system.

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• 13.

### ROM is...

• A.

The way computers store infrequently changing information like saved files and programs that are not in current use.

• B.

The place in a computer where the operating system, application, and data in current use are kept.

• C.

The software between BIOS and applications. It is responsible for the management and coordination of programs.

• D.

Software that identifies, tests, and operates system devices and other hardware.

A. The way computers store infrequently changing information like saved files and programs that are not in current use.
Explanation
ROM stands for Read-Only Memory, which is a type of computer memory that stores data that is permanently written during manufacturing and cannot be easily modified or erased by normal computer operations. It is used to store infrequently changing information like saved files and programs that are not in current use. Unlike RAM (Random Access Memory), ROM retains its data even when the computer is turned off. Therefore, the given answer accurately describes the purpose and function of ROM in computer systems.

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• 14.

### One day you wake up and you can't hear. You walk over to a speaker and look at it. You can tell the speaker is making a sound if the speaker is...

• A.

Vibrating.

• B.

Black.

• C.

Not moving at all.

• D.

Cracked.

A. Vibrating.
Explanation
The correct answer is vibrating because when a speaker is making a sound, it produces vibrations that create sound waves. These vibrations can be felt or observed by looking at the speaker. The other options, such as being black, not moving at all, or cracked, do not necessarily indicate that the speaker is making a sound.

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• 15.

### Sound travels in...

• A.

Particles.

• B.

Waves.

• C.

Trains.

• D.

Rays.

B. Waves.
Explanation
Sound travels in waves. Sound waves are longitudinal waves, which means that the particles of the medium vibrate back and forth in the same direction as the wave travels. These waves transfer energy from one particle to another, allowing sound to propagate through a medium such as air, water, or solids. The vibrations of the particles create compressions and rarefactions, resulting in the perception of sound by our ears. Therefore, waves is the correct answer as it accurately describes the mechanism by which sound travels.

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• 16.

### Fast vibrations create a low frequency while slow vibrations create a high frequency.

• A.

True

• B.

False

B. False
Explanation
Fast vibrations create a high frequency, while slow vibrations create a low frequency. This is because frequency is determined by the number of vibrations or cycles that occur in a given amount of time. When vibrations occur quickly, more cycles are completed in a given time period, resulting in a higher frequency. Conversely, when vibrations occur slowly, fewer cycles are completed in the same time period, resulting in a lower frequency. Therefore, the statement provided in the question is incorrect.

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• 17.

### What word do musicians use to describe frequency?

• A.

Kolberstein.

• B.

Timbre.

• C.

Pitch.

• D.

Vocals.

C. Pitch.
Explanation
Musicians use the word "pitch" to describe frequency. Pitch refers to the perceived highness or lowness of a sound, which is directly related to its frequency. Higher frequencies are perceived as higher pitches, while lower frequencies are perceived as lower pitches. This term is commonly used in music to describe the specific note or tone being played or sung.

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