Mock Flashcards
Write the cycle of the Fetch Decode System?
1)memory address gets copied to theMAR
2) Address get increment
3)program sends signal
4)current instructions register
5)cycle repeat
What’s 2 common CPU component and their function?
ALU(arithmetic logic unit) perform mathematical calculations
CU(control unit) Manage instruction processing or coordinate data flow
What does MAR(memory address Register) holds?
Holds the address of the current instruction that is to be fetched from the memory
What does MDR(memory data register) holds?
Temporarily holds the data being transferred to or from the memory
What is a program counter?
keeps track of the next memory address of the next instruction
What is an accumulation?
A register in the CPU where intermediate arithmetic and logic result are stored
Purpose and characteristics of embedded system
Purpose : computer systems that carry out a small number of tasks
Characteristics : low cost , small size , high efficiency
What are example of embedded system?
- digital watches
- microwave
- washing machine
What are the needs of a primary storage?
- To hold both data and primavera that are in current use by the CPU
What are the differences between ROM and RAM?
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
What is the purpose of RAM in a computer?
to hold data and instructions that are currently in use.
What is the purpose of ROM in a computer
storing instructions and data in computing
What is virtual memory?
enables data that is in RAM
What is the need of secondary storage?
to keep programs and data indefinitely
What are the common type of storage?
- Optical
-Magnetic
-Solid state
-DVD/CD
-SSD
Type of compression
Lossy - reduces file size by permanently removing some of the original data.
Lossless - reduces file size by removing unnecessary metadata.
Type of network
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
Factors that affect performance of network
- bandwidth
- distance if connecting
-interface
Advantages and disadvantages of the cloud?
Adv : low cost , Sercurity
Dis : required internet , lack of total control
Advantages and disadvantages of the Star and Mesh topologies?
Star topology
Adv : low cost
Dis : need for more equipment
Mesh topology
Adv : data transmission is reliable
Dis : higher cost
Role of a peer-to-peer network?
processes running on participating machines in the network
Role of client service
store data, manage/provide resources, and control user access
