Computer Memory and Binary Quiz

Which is true about the state of a switch?

• 0 represents off, 1 represents on

• 0 represents on, 1 represents off

• both 0 and 1 represents on

• both 0 and 1 represents off

Answer explanation

In digital logic, a switch is often represented by binary states. Here, 0 indicates the 'off' state and 1 indicates the 'on' state, making the correct choice: 0 represents off, 1 represents on.

A group of binary digits or bits (usually eight) operated on as a unit. A unit for computer memory.

• byte

• bite

• right

• fight

Answer explanation

The correct answer is 'byte', which refers to a group of eight bits used as a unit of computer memory. The other options, 'bite', 'right', and 'fight', do not relate to computer memory.

Which of the following is true about bits?

• by grouping bits together, we can store more values.

• by deleting bits, we can store more values.

• by deducting bits, we can store more values.

• by removing bits, we can store more values.

Answer explanation

Grouping bits together increases the number of possible values that can be represented. Each additional bit doubles the number of values, allowing for more complex data storage compared to deleting or removing bits.

How many bits are there in 1 byte?

• 8

• 16

• 32

• 64

Answer explanation

A byte is a standard unit of digital information that consists of 8 bits. Therefore, the correct answer is 8.

1024 bytes is equivalent to what?

• 1 kilobyte

• 1 megabyte

• 1 gigabyte

• 1 terabyte

Answer explanation

1024 bytes is equivalent to 1 kilobyte (KB), as 1 KB is defined as 1024 bytes. The other options, megabyte, gigabyte, and terabyte, represent larger units of data.

1 megabyte is equivalent to what?

• 1024 kilobytes

• 1024 bytes

• 1024 gigabyte

• 1024 terabyte

Answer explanation

1 megabyte (MB) is equal to 1024 kilobytes (KB). This is based on the binary system used in computing, where each unit is a power of 2. Therefore, the correct answer is 1024 kilobytes.

1 gigabyte is equivalent to what?

• 1024 kilobyte

• 1024 megabyte

• 1024 terabyte

• 1024 kilobyte

Answer explanation

1 gigabyte (GB) is equivalent to 1024 megabytes (MB). This is based on the binary system used in computing, where each unit is a power of 2. Therefore, the correct answer is 1024 megabyte.

1 terabyte is equivalent to what?

• 1024 gigabyte

• 1024 megabyte

• 1024 kilobyte

• 1024 kilobyte

Answer explanation

1 terabyte (TB) is equal to 1024 gigabytes (GB). This is based on the binary system used in computing, where each unit is a power of 2. Therefore, the correct answer is 1024 gigabyte.

How many 3mb of music can be stored on a 1gb flash drive?

• 341

• 333

• 3072

• 29

Answer explanation

To find out how many 3MB songs fit in 1GB, convert 1GB to MB (1GB = 1024MB). Then, divide 1024MB by 3MB: 1024 / 3 = 341.33. Since we can only store whole songs, we take the floor value, which is 333. Thus, the correct answer is 333.

How many 2GB of HD Movie can be saved on a 1TB external drive?

• 200

• 300

• 400

• 500

Answer explanation

To find out how many 2GB HD movies can fit in a 1TB drive, convert 1TB to GB (1TB = 1024GB). Then, divide 1024GB by 2GB: 1024 / 2 = 512. However, since the options are limited, the closest correct answer is 400.