Computing Revision Flashcards
What is a byte?
8 bits
What is a network ?
Computers joined together to communicate and share data
What is Malware?
Software typically used to damage a computer
What is the function of CPU?
Fetch data, decode the data then execute the order
What is a cache?
A small amount of memory in the CPU
Give an environmental impact caused by creating technology.
Produce pollution into the environment
What does the Data Protection Act 2018 do?
This act secures information of individuals so that others cannot access it
What is the computer misuse act?
This law prevents someone stealing data and using it negatively
Why are smartphones bad for children?
If a child is being bullied they may be cyber bullied and will have no escape from the bullying
What are cookies?
Simple text files that websites use to store data
What is a primary key?
A unique identifier for each record
What is a record?
A data structure that allows multiple data items to be stored in different fields.
What does >= mean in SQL?
Greater than or equal to
What is the of “AND”
TRUE if both conditions are TRUE
Where is a TCP used
Transport layer
What is a SMTP
Simple Mall Transfer Protocol
What does the Transport layer do
Setting up communications between 2 devices.
Splitting data into packets and checking packets are sent to the right place
What does the network layer do
Adds IP address to data packets then directs them between devices using routers
What does the data layer do
Where the hardware and drivers operate. Passes data over the physical network
What does the application layer do
Where software operates
