Wrong in Mocks

Question 1

Give three reasons why a programmer may use hexadecimal to represent binary numbers

Answer 1

1. It is easier to read
2. Easier to debug
3. Less likely to make mistake
4. Shorter representation

Question 2

Explain the effect this change will have on the performance of the CPU

Answer 2

Improves performance because more FDE cycles can be processed in a second.

Question 3

Describe the role of the MAR in the fetch-decode-execute cycle

Answer 3

Stores addresses of next instruction.

Question 4

CPU has a list of all the machine code commands it can process, what is this list called?

Answer 4

Instruction Set

Question 5

Describe the differences between symmetric and asymmetric encryption.

Answer 5

Symmetric has a shared key to encrypt and decrypt, known by both sender and receiver.
Asymmetric have different keys, public to encrypt and private to decrypt. Everyone knows public key but only those intended know private key.