Revision for Mock june 2022 paper 1 JS77

Select the two character sets below

• ASCII

• Binary

• Unicode

• A-Z

How many bits does ASCII use per character?

• 64 bits

• 32 bits

• 8 bits

• 16 bits

If you have 4 bits how many representations of 1's and 0's can you have

• 2

• 4

• 8

• 16

What is the color depth of an image with 4 colors?

• 4 bits

• 8 bits

• 2 bits

• 1 bit

What does lossy compression do?

• Deletes part of the file

• Rearranges the file to be more efficient

• Improves the quality of the file

• Increases the file size

What is a LAN?

• A limited area network

• A large area network

• A local area network

• A long area network

What does a router do?

• Forwards packets between networks

• Provides a wireless signal

• Stores data

• Encrypts data

What is an IP address used for?

• Identifying a device's location

• Encrypting data

• Storing data

• Providing a wireless signal

What does TCP do?

• Splits data into packets and handles errors

• Encrypts data

• Provides a wireless signal

• Stores data

What is the denary number for 1111 0000