Unit 5 - Networks

Understand the structure of the Internet

Describe the term ‘Uniform Resource Locator’ (URL) in the context of networking

Explain the terms ‘domain name’ and ‘IP address’

Describe how domain names are organised

Understand the purpose and function of the Domain Name Server (DNS) system

Describe the characteristics of LANs and WANs

Describe circuit switching and packet switching

Understand the role of packet switching and routers

Understand the function of network hardware devices

Understand the importance of protocols and standards

Describe the roles of the four layers in the TCP/IP protocol stack

Be familiar with transferring files using FTP

Explain the role of an email server in sending and retrieving email

Discuss network security and threats

Discuss use of firewalls, proxies and encryption

Discuss worms, Trojans and viruses and the vulnerabilities that they exploit

To understand HTML and the role of HTML on the World Wide Web

To understand CSS and the role of CSS in Web Pages

To be familiar with various HTML and CSS tags and their functions

To use inline CSS directly within HTML files using the <style> tag, and with external style sheets

To understand HTML and the role of HTML on the World Wide Web

To understand CSS and the role of CSS in Web Pages

To be familiar with various HTML and CSS tags and their functions

To use inline CSS directly within HTML files using the <style> tag, and with external style sheets

To understand how web pages are indexed by search engines

To understand the PageRank algorithm

To be able to interpret and apply the PageRank algorithm to a given scenario

To understand the client/server and peer-to-peer models

Describe situations where each model may be used

To understand client and server side processing

To identify the different uses of client and server side processing and describe situations when either may be most practical

To identify the advantages and disadvantages of client and server side processing