EDEXCEL GCSE COMPUTER SCIENCE EXAM
WITH VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| LATEST VERSION 2025
Why are the disadvantages of the Ring topology? - ANSWER-If the main cable
is damaged the whole network fails
Every node on the network receives all data sent
All nodes must be switched on
What are the advantages of the Star topology? - ANSWER-Failure of a node
does not affect the other nodes
High performance
What are the disadvantages of a Star topology? - ANSWER-Whole network
fails if the switch fails
Requires many cables so can be expensive
What are the advantages of a Mesh topology? - ANSWER-New nodes can be
added without interfering other nodes
Messages should always get through due to many possible routes
,What are the disadvantages of a mesh network? - ANSWER-Require a lot of
maintenance
Full mesh networks can be impractical as high number of connections needed
What does a firewall do? - ANSWER-Monitors traffic entering and leaving a
network
What is a bus? - ANSWER-A collection wires through which data is transmitted
What is the role of the address bus? - ANSWER-Carries memory addresses
from the processor to other components (e.g RAM)
What is the role of the data bus? - ANSWER-Carries the actual data between
the processor and other components
What is the role of the control bus? - ANSWER-Carries control signals from the
processor to other components
What are the advantages of optical storage? - ANSWER-- Cheap
- Portable
Durable
What are the disadvantages of optical storage? - ANSWER-Small capacity, can
be easily damaged
What are the advantages of magnetic storage? - ANSWER-- Very large capacity
- Relatively cheap
, What are the disadvantages of magnetic storage? - ANSWER-Generate heat,
noisy
What are the advantages of solid state storage? - ANSWER-Very fast,don't
require defragmentation,reliable
What are the disadvantages of solid state storage? - ANSWER-Small capacity,
expensive
What is a LAN? - ANSWER-Local Area Network is network that connects
devices close to each other
What is a WAN? - ANSWER-Wide Area Network is a network over a large
geographical area
What happens in a client/sever network? - ANSWER-Every device is a client or
server, clients request resources and a sever holds resources to send to the client
What are the advantages of a client-server network ? - ANSWER-Server can
backup and store data centrally
What are the disadvantages of a client-server network? - ANSWER-Sever is
expensive and difficult to run
What is a peer-to-peer network? - ANSWER-A network in which each
computer has both server and client capabilities.
What factors affect network performance? - ANSWER-Latency, Bandwidth and
Error rate
What is the application layer? - ANSWER-Where network application operate
WITH VERIFIED QUESTIONS AND ANSWERS||
GUARANTEED PASS|| LATEST VERSION 2025
Why are the disadvantages of the Ring topology? - ANSWER-If the main cable
is damaged the whole network fails
Every node on the network receives all data sent
All nodes must be switched on
What are the advantages of the Star topology? - ANSWER-Failure of a node
does not affect the other nodes
High performance
What are the disadvantages of a Star topology? - ANSWER-Whole network
fails if the switch fails
Requires many cables so can be expensive
What are the advantages of a Mesh topology? - ANSWER-New nodes can be
added without interfering other nodes
Messages should always get through due to many possible routes
,What are the disadvantages of a mesh network? - ANSWER-Require a lot of
maintenance
Full mesh networks can be impractical as high number of connections needed
What does a firewall do? - ANSWER-Monitors traffic entering and leaving a
network
What is a bus? - ANSWER-A collection wires through which data is transmitted
What is the role of the address bus? - ANSWER-Carries memory addresses
from the processor to other components (e.g RAM)
What is the role of the data bus? - ANSWER-Carries the actual data between
the processor and other components
What is the role of the control bus? - ANSWER-Carries control signals from the
processor to other components
What are the advantages of optical storage? - ANSWER-- Cheap
- Portable
Durable
What are the disadvantages of optical storage? - ANSWER-Small capacity, can
be easily damaged
What are the advantages of magnetic storage? - ANSWER-- Very large capacity
- Relatively cheap
, What are the disadvantages of magnetic storage? - ANSWER-Generate heat,
noisy
What are the advantages of solid state storage? - ANSWER-Very fast,don't
require defragmentation,reliable
What are the disadvantages of solid state storage? - ANSWER-Small capacity,
expensive
What is a LAN? - ANSWER-Local Area Network is network that connects
devices close to each other
What is a WAN? - ANSWER-Wide Area Network is a network over a large
geographical area
What happens in a client/sever network? - ANSWER-Every device is a client or
server, clients request resources and a sever holds resources to send to the client
What are the advantages of a client-server network ? - ANSWER-Server can
backup and store data centrally
What are the disadvantages of a client-server network? - ANSWER-Sever is
expensive and difficult to run
What is a peer-to-peer network? - ANSWER-A network in which each
computer has both server and client capabilities.
What factors affect network performance? - ANSWER-Latency, Bandwidth and
Error rate
What is the application layer? - ANSWER-Where network application operate
