Question Wrong 2022

Question 1

What group numbers van ipv4 addressed can be between

Answer 1

0-255

Question 2

Why ethernet is a standard

Answer 2

High bandwidth, inbuilt security, less costly for installation, used by most manufactures, reliable connection

Question 3

Three tasks carried by router

Answer 3

Transmit data to destination
Recieve packets
Find most efficient way to get right IP addresx

Question 4

Give 2 reasons why library should use encryption

Answer 4

Data can be read but not understood
Protect people confidential information

Question 5

2 software based security methods

Answer 5

Anti virus, scans for viruses, deletes viruses, prevent download of infected files
Anti malware blocks incoming and outgoing traffic that unauthorised and blocks traffic
Could also mention user access level and encryption

Question 6

Describe how an analogue sound wave converted into digital form

Answer 6

Sound wave samplec, measure amplitude of wave, at regular tike intervals, each measurement is stored as binary number

Question 7

3 things metadata uses on file

Answer 7

Colour depth
Height
Width
Geolocation
File size

Question 8

Explain why using lossy on a stufent file to senf to a teacher is bad

Answer 8

Doesnt compress text files, data will be permantly lost, teachers requires original image file

Question 9

Identify 2 things that a smart tv store on RAM

Answer 9

Application currently running
Current video being watched
Buttons pressed by user, current volume

Question 10

State an example of what the smart tv stores on ROM and why

Answer 10

User preferences, to store data once computer turjed off

Question 11

Identify a state device that can be used for a tv

Answer 11

Ssd
Large storage capacity
Lightweight
If tv is moved, its more easier to move the ssd with it cuz its portable
Runs quieter and fast data accesz