last Min!!

Question 1

Data protection act 2018 entails what

Answer 1

Transparent over what data’s used for
Limit data collected to purpose only
Data must be accurate
Must take care of breaches
Demonstrate they acknowledge and follow data laws

Question 2

What rights are in data protection act

Answer 2

Right to be informed
Right of access
Right to update info
Right to be forgotten

Question 3

Why is assembly code 1:1 relationship

Answer 3

It’s made specifically for the instruction set of the processor you are developing for

Question 4

What does volatile mean (RAM)

Answer 4

If power is lost, all data’s lost

Question 5

Magnetic storage how to read and write

Answer 5

Platters spin and the write head will magnetise and demagnetise the sections underneath it

To read, head measures which sections are magnetised or not

Question 6

Head should not what and has no

Answer 6

Not touch the platter
Has no grooves

Question 7

How does optical storage work

Answer 7

Uses light to store and read data
Laser burns marks on disc

Marks are called pits and gaps between them are called land

Question 8

How to read optical storage

Answer 8

Laser is put on lower power and shine on disc

Light sensor reads the light that is reflected as the pits don’t reflect lights but the lands do

Question 9

What are marks and pits

Answer 9

Marks are called pits and gaps between them are called land

Question 10

Optical disc formats

Answer 10

ROM
Write once
Rewritable (but has a limited lifespan)

Question 11

Optical storage advantages

Answer 11

Cheap for small capacities
Small and portable
Last long time

Question 12

Optical storage disadvantages

Answer 12

Expensive for large capacities
Easily scratched
Slow read
Limited reusability

Question 13

Magnetic storage advantages

Answer 13

Cheap for large capacities
Infinitely rewritable
Reliable
Faster than optical

Question 14

Magnetic storage disadvantages

Answer 14

Damaged if dropped or exposed to a magnetic field
Slower than solid state drive
Moving parts

Question 15

Solid state advantages

Answer 15

Medium storage
No moving parts so reliable
No noise
Low power usage
Fastest

Question 16

Solid state disadvantages

Answer 16

Limited number of write cycles
Expensive

Question 17

Assemblers and compilers translate directly or indirectly into machine code

Answer 17

Directly

Question 18

How do interpreters go to machine code

Answer 18

They do not go directly, they call appropriate machine code subroutines within their own code to carry out statements

Question 19

What’s system software

Answer 19

Manages computing system resources and acts as a platform to run application software

Question 20

What’s application software

Answer 20

Performs end user tasks

Question 21

What is a firewall

Answer 21

Network security device that monitors incoming and outgoing network traffic and can allow or block travels

Question 22

Embedded vs non embedded system

Answer 22

Embedded computer works as a part of a larger system e.g. computer system in a car or micro controller in a washing machine
Non embedded isn’t connected to a larger system e.g. mobile phone

Question 23

How does cloud storage work

Answer 23

Storage is stored using magnetic storage or solid state in a remote location like a big building and can be accessed through the internet