client server

Question 1

Define Client Server

Answer 1

Client sends request to server which responds with response messages with the requested info

Question 2

Examples of client server models

Answer 2

File server
Database server
Email server

Question 3

API definition

Answer 3

A set of protocols that reate to the communication of multiple applications. Applications can make use of the features from other application

Question 4

Websocket protocol

Answer 4

API that operates in application layer of TCP IP.
Ensures constant stream of info via a bi-directional connection, eliminating the need to establish a brand new connection and data request

Question 5

Pros of Websocket Protocol

Answer 5

Means UI doesn’t need to be refreshed constantly, as there is constant, real time information flow
Faster data transmission than HTTP as link is already there - no need for packets to be encrypted, defined guaranteed hop limits
Smaller packets as well, saving on running costs

Question 6

Uses of Websocket

Answer 6

Video Streaming
Online games
Instant messaging

Question 7

XML vs JSON

Answer 7

JSON is more compact + easier to read and create + faster for computers to process

XML is more flexible than JSON

Question 8

Thin Client Definition

Answer 8

Majority of network processing happens by a central server

Question 9

Thin Client Properties

Answer 9

Easy and cheap to add new clients
All security and OS updates are downloaded to client at boot
Require a powerful server which needs expertise to maintain
Switch needed, not a hub
Greater Security
HIgh bandwidth needed (also low latency) - high data collisions