client server and peer to peer networks

Question 1

what are the factors that affect the performance of a network

Answer 1

users
bandwidth
transmission media
error rate
latency

Question 2

what is users

Answer 2

If you have too many devices requesting data at the same time, thus using the bandwidth, they can overload your network, causing network speed to slow down as the available bandwidth will be shared amongst different users. The more users, the more divided the available bandwidth would be.

Question 3

what is bandwidth

Answer 3

The maximum amount of data transmitted over an internet connection in a given amount of time

Question 4

what is transmission media

Answer 4

a physical path between the transmitter and the receiver - wired connections has a higher bandwidth than wireless connection

Question 5

what is error rate

Answer 5

less reliable connections increase the number of errors that occur when data is transferred. This means data will have to be resent until it arrives correctly.

Question 6

what are the main factors of error rate

Answer 6

Length of cable, and the grade of material used are factors of error rate.

Question 7

what is a server

Answer 7

provides functionality for other programs or devices E.g Managing access to a network with logins

Question 8

what are some examples of servers

Answer 8

Web Server.
Database Server.
Email Server.
Web Proxy Server.

Question 9

what is a client

Answer 9

this is a computer that accesses services on another device.

Question 10

what is a client server network

Answer 10

consists of a single central computer functioning as a server and directing several other computers, referred to as clients. Clients can access shared files and information kept on the serving machine by connecting to the server.

Question 11

what is a peer-to-peer networks

Answer 11

each computer is known as a peer . Peers store their own files, which can be accessed by other peers on the network.

Question 12

3 advantages of peer to peer networks

Answer 12

Each computer can communicate and share its data and resources with all others (e.g. files or even a printer)
Users can control which files they wish to share or keep private.
No cost in buying a server.

Question 13

2 disadvantages of peer to peer

Answer 13

• If you have work saved on another computer’s hard disk drive it may be lost if that computer crashes or a user deletes it.
• No central backup. Each hard disk drive must be backed up independently.

Question 14

3 advantages of client server

Answer 14

• Backup is central and only the file server needs to be backed up as that is where the data is stored.
• Data and programs are saved on the central file server and are more secure.
• security is high

Question 15

disadvantages of client server

Answer 15

• If the server crashes then programs and data cannot be accessed and may be lost for all users.
• harder to maintain = needs technical knowledge

Question 16

what is latency

Answer 16

the time it takes for data to pass from one point on a network to another.