Web Application

Question 1

What is the WWW?

Answer 1

A system of interlinked hypertext documents that are accessed via the internet using a browser

Question 2

What is the internet?

Answer 2

A global network consisting of interconnected networks using communication protocols

Question 3

What is a URL?

Answer 3

A unique address identifying every resource on the internet

Question 4

Explain the differences between the Internet and intranet

Answer 4

The internet is a global network consisting of interconnected networks using communication protocols, the intranet is a private network which requires a username and password

Question 5

IP Address

Answer 5

A standard set of rules used to ensure the proper transfer of information between computers on the internet, can be static (permanent) or dynamic (temporary)

Question 6

Wed Browser

Answer 6

Software allows users to view and use web pages on the internet, used to view HTML pages whether user online or offline

Question 7

Web Server

Answer 7

Computer designed to deliver internet webpages across the internet or within an intranet, processes info that comes from internet infrastructure

Question 8

Web hosting

Answer 8

To have a presence on internet web hosting required, provides individuals and organisations with access to web server and web space to store website. Host ensures website available online

Question 9

FTP

Answer 9

Most commonly used protocol used to transfer files across the internet

Question 10

ISP

Answer 10

Sells internet access and provides web servers which connect to search engine, also provide services such as email service, security features, customer support, digital TV package, website filtering

Question 11

Search Engine

Answer 11

Searches internet for info using keywords or criteria

Question 12

Cache

Answer 12

Temporary files allow browsers to download website images, data and documents for faster viewing

Question 13

Cookies

Answer 13

Store previous activity on site, can be used to track a users browser history

Question 14

Portal

Answer 14

Acts as main entry point to a group of web services, can require logon. Eg C2KNI

Question 15

WEBSITE

Answer 15

A collection of HTML pages linked together on WWW, can be navigated through by clicking on hyperlinks

Question 16

Web page

Answer 16

A page of info stored on WWW, usually written using HTML, viewed using web browser

Question 17

International Telecommunications Union

Answer 17

UN agency responsible for allocation radio spectrum and satellite orbits, developing standards related to network technology, improving inter connectivity between countries across the world

Question 18

World Wide Web Consortium

Answer 18

Develops standards to ensure growth of the web, promotes compatibility of HTML, standards set by it are CSS and HTML being standard languages for creating web pages

Question 19

Client side processing

Answer 19

Splits the processing workload between the server computer and the client computer, the code needed to enable user input is downloaded and executed by browser on client computer. Advantages are it reduces the load on the server, reduces volume of web traffic

Question 20

Server side processing

Answer 20

Sends data to server across the internet, server then runs application that processes the info and returns the result, eg online form submission

Question 21

Encryption

Answer 21

A method of providing security by scrambling data when it is stored electronically and being transmitted. Data scrambled using a encryption key, encrypted data is meaningless to anyone who intercepts it, data must be decrypted using a key, sometimes the same key is used to both encrypt and decrypt data.

Question 22

Public and private keys

Answer 22

Public key encryption uses two different keys, an encryption key and a decryption key. They two are mathematically related so only what is encrypted with public key can be decrypted with private key

Question 23

Digital Signature

Answer 23

A part of a message that is encrypted by sender, used to ensure sender is who they say they are.

Question 24

Digital Certificate

Answer 24

Used to verify senders authenticity, widely used with websites