AQA computer science- Unit 6 communication revision

Covers a small geographical area on a single site

• LAN

• PAN

• WAN

• SAN

Connected to a central switch or server

• Mesh

• Star

• Bus

• Ring

use a single backbone cable

• Mesh

• Star

• Bus

• Ring

What is a protocol?

• The law of computers

• set of rules for how devices to communicate

• set of ideas of communication

• processes to which devices must obey

Which Communication method would send data simultaneously across several channels?

• Serial

• Parallel

• Trapezoid

• Rhombus

Serial communication occurs as a series of individual communication 'packets', 'letters', 'words' or 'symbols'.

• True

• False

Select all of the Serial communication cables

• 
• 
• 
• 

Which of these is the main cause of issues for Parallel communication?

• synchronization

• installation

• cost

• Network traffic

Asynchronous communication is when a sender sends an uninterrupted stream of data to a receiver.

• True

• False

Which Communication method is most practical for long distance, network communications?

• Serial

• Parallel

• Paper airplane

• Psychic Medium