Mock Scheme 2022 Flashcards
What is bits per second
The number of bits processed over a certain period of time
What is real time processing used for
online booking systems and involves processing data as it entered into the system
What will compression do
Decrease file size and remove detail not visible to human eye from image
What does compression prevent
prevents lag when streaming a video
What is an ADC
Analogue to digital converter
What are the 3 vs
Volume variety Velocity
What is a backup
A copy of an original file used to restore data
What is optical storage
Storage that uses a laser to read and write dark and light locations such as bits
What is capacity
The amount of data that a storage medium can hold
What is cloud storage
Storage that holds data at a remote location
What is the ALU
Processed all data in the CPU, Performs all mathematical calculations such as add, subtract, multiply and divide. Executes all logical operations such as true false greater than less than equal to
What is the IAS
Stores programs temporarily while they are being used
Fetches instructions from specific memory locations
Advantages and disadvantages of a 3d printer
Printed using different materials, Can produce a 3d model
Expensive to purchase, limited as you can only print a prototype, not good for large scale manaufacturing
features ring network
If cable fails whole network fails, Data travels in one direction, has to visit every machine before reaching destination.
What is a network protocol
set of rules to allow communication between two different communication systems
what is File transfer protocol
a network protocol used for the transfer of files from one host to another over the Internet
HTTPS abbreviation and benefits
Enable user to safely use internet, stop files being corrupted/deleted.
What is Spyware
Software used to capture passwords, bank details and credit care details
What is Trojan Horse
A program used by hackers to try gain access to users systems
What is a worm
A program that replicates itself using up memory space
What monitors smart devices while at home
WiFi
What connects a smart watch to smartphone
Bluetooth
What is the internet
The internet is the network that the world wide web uses to function and the world wide web is the application that runs on the internet
What database tool collects data about customer
Form
What database tool print the results of processing
Report
What provides shortcut for repetitive task
Macro
Give an example of a key field in cust_TBL
cust_ID
What is a database
A structured collection of information
Each entry about a person or item in a database is called
A record
Data can be entered into database using
A form
Direct memory access (DMA
denotes data that can be directly transferred from a hardware device without having to be entered again
What is JPEG
Joint photographic experts group
What is TIFF
Tagged image file format
What is a WAN
Wide area Network
LAN
Local Arean Network
