Prelim Revision Flashcards
Name of a primary key that combines 2 or more fields
Compound key
What law means that social media companies must allow a software that intercepts and monitor all communications
The regulation of investigatory powers act (RIPA)
What type of software allows programmers to modify the source code and what is an advantage of this
Open source
Advantage- the community can improve it, customise it and fix issues
What does 1.2MHz processor mean
The clock speed of the processor is 1,200,000 cycles every second
Name an example of a current trend in operating systems
Voice recognition
What type of development methodology uses prototyping
Rapid application development (RAD)
Why a digital wireframe design would be good for a meeting
It can demonstrate the software/ website well.
The client can interact with it
What permissions do teachers and pupils get on the school network
Pupils - read only
Teachers - read and write
Why’s is it a bad idea to only do a back up once a week
Data could be lost between back ups
benefit of using rules
reduces need for repetition of extra facts and improves efficiency by reducing amount of code
what is the difference between differential and incremental backups
Differential - stores new or modified data since the last full backup
incremental - stores all new or modified data since the last incremental backup
what does off-site repository mean? why is it important?
this means the data is sent to another companies building. This is important because in the event of a fire no data would be lost
What is cache?
Cache is very fast access memory. Cache is used to store frequently used instructions to save fetching them from the slower RAM memory.
Why is Cache memory good for a loop?
After the loop has been executed for the first time, the commands inside the loop will be kept in cache for every other repetition of the loop.
Which part of a webpages code would you find the meta tags
The head section
