May 22 Flashcards
1
Q
What are 3 tasks carried out by a router
A
Receive packets
-send packets
-assigns IP adresses to nodes
2
Q
Why should the library use encryption
A
-data cannot be understood if intercepted by hackers
-confidential data can inly be read by authorised users
3
Q
How does a firewall protect computet systems and data
A
-scans incoming and outgoing traffic
-blocks unauthorised traffic
-blocks incoming/outcoming traffic
4
Q
How is an analogue soundwave converted into digital form?
A
-the height if the waveform is measured
-each sample messurement is stored as a binary number
-samples are taken at regular intervals
5
Q
Benefits of compressing data?
A
-takes up less storage space
-so it can be transmitted faster
-reduces file size
