GCSE CS Revision

What is 2000 terabytes equal to?

• 2 petabytes

• 2 kilobytes

• 2 megabytes

• 2 gigabytes

• 2 bytes

How many unique values can you represent using 4 bits in binary?

• 16

• 15

• 8

• 7

What do you get If you do a binary shift of 3 places right to this binary number: 10001110?

• 0001 0001

• 10001

• 10010001

• 10001110

What does the program counter do?

• Performs mathematical calculations

• Stores the address of the data to be fetched from RAM

• Stores the address of the next instruction to be fetched

• Stores the result of calculations

What does the accumulator do?

• Performs mathematical calculations

• Stores the address of the data to be fetched from RAM

• Stores the address of the next instruction to be fetched

• Stores the result of calculations

What does the MDR do?

• Performs mathematical calculations

• Stores the address of the data to be fetched from RAM

• Stores the address of the next instruction to be fetched

• Stores the result of calculations

What does the ALU do?

• Performs mathematical calculations

• Stores the address of the data to be fetched from RAM

• Stores the address of the next instruction to be fetched

• Stores the result of calculations

Which part of the CPU performs logical operations?

• MDR

• MAR

• PC

• ALU

Other than the number of devices logged on, what else can affect the performance of the LAN?

• The temperature outside

• The distance a device is from the router

• The day of the week

• The time of year

Which of these are three things a router does?

• Connect a device to the internet, send data to a device and receive data from a device

• Show you the map, give you directions and assign you an ip address

• assign an ip address, log you onto a network and stop hackers

• make you a sandwich, assign you an ip address and call the police during a burglary