Mock

Question 1

Write the cycle of the Fetch Decode System?

Answer 1

1)memory address gets copied to theMAR
2) Address get increment
3)program sends signal
4)current instructions register
5)cycle repeat

Question 2

What’s 2 common CPU component and their function?

Answer 2

ALU(arithmetic logic unit) perform mathematical calculations
CU(control unit) Manage instruction processing or coordinate data flow

Question 3

What does MAR(memory address Register) holds?

Answer 3

Holds the address of the current instruction that is to be fetched from the memory

Question 4

What does MDR(memory data register) holds?

Answer 4

Temporarily holds the data being transferred to or from the memory

Question 5

What is a program counter?

Answer 5

keeps track of the next memory address of the next instruction

Question 6

What is an accumulation?

Answer 6

A register in the CPU where intermediate arithmetic and logic result are stored

Question 7

Purpose and characteristics of embedded system

Answer 7

Purpose : computer systems that carry out a small number of tasks
Characteristics : low cost , small size , high efficiency

Question 8

What are example of embedded system?

Answer 8

• digital watches
• microwave
• washing machine

Question 9

What are the needs of a primary storage?

Answer 9

• To hold both data and primavera that are in current use by the CPU

Question 10

What are the differences between ROM and RAM?

Answer 10

RAM(Random access memory) - RAM is memory that stores the data that you’re currently working with, but it’s volatile,

ROM(Read only memory) -refers to permanent memory. It’s non-volatile

Question 11

What is the purpose of RAM in a computer?

Answer 11

to hold data and instructions that are currently in use.

Question 12

What is the purpose of ROM in a computer

Answer 12

storing instructions and data in computing

Question 13

What is virtual memory?

Answer 13

enables data that is in RAM

Question 14

What is the need of secondary storage?

Answer 14

to keep programs and data indefinitely

Question 15

What are the common type of storage?

Answer 15

• Optical
  -Magnetic
  -Solid state
  -DVD/CD
  -SSD

Question 16

Type of compression

Answer 16

Lossy - reduces file size by permanently removing some of the original data.
Lossless - reduces file size by removing unnecessary metadata.

Question 17

Type of network

Answer 17

LAN(local area network) - collection of devices connected together in one physical location
WAN(Wide area network) - network that is spread over a wide geographical area

Question 18

Factors that affect performance of network

Answer 18

• bandwidth
• distance if connecting
  -interface

Question 19

Advantages and disadvantages of the cloud?

Answer 19

Adv : low cost , Sercurity
Dis : required internet , lack of total control

Question 20

Advantages and disadvantages of the Star and Mesh topologies?

Answer 20

Star topology
Adv : low cost
Dis : need for more equipment

Mesh topology
Adv : data transmission is reliable
Dis : higher cost

Question 21

Role of a peer-to-peer network?

Answer 21

processes running on participating machines in the network

Question 22

Role of client service

Answer 22

store data, manage/provide resources, and control user access