01 Networks

Identify different types of networks. Examples include local area network (LAN), virtual local area network (VLAN), wide area network (WAN), storage area network (SAN), wireless local area network (WLAN), internet, extranet, virtual private network (VPN), personal area network (PAN), Globalization has been accelerated by the technical advances linked to network development.

Outline the importance of standards in the construction of networks. Standards enable compatibility through a common “language” internationally.

Describe how communication over networks is broken down into different layers. Awareness of the OSI seven layer model is required, but an understanding of the functioning of each layer is not.

Identify the technologies required to provide a VPN.

Evaluate the use of a VPN. The use of a VPN has led to changes in working patterns.

Define the terms: protocol, data packet.

Explain why protocols are necessary. Including data integrity, flow control, deadlock, congestion, error checking.

Explain why the speed of data transmission across a network can vary.

Explain why compression of data is often necessary when transmitting across a network. Compression has enabled information to be disseminated more rapidly.

Outline the characteristics of different transmission media. Characteristics include: speed, reliability, cost and security. Transmission media include: metal conductor, fibre optic, wireless.

Explain how data is transmitted by packet switching.

Outline the advantages and disadvantages of wireless networks. Wireless networks have led to changes in working patterns, social activities and raised health issues.

Describe the hardware and software components of a wireless network.

Describe the characteristics of wireless networks. Include: WiFi; Worldwide Interoperability for Microwave Access (WiMAX); 3G mobile; future networks. Connectivity between different locations.

Describe the different methods of network security. Include encryption types, userID, trusted media access control (MAC) addresses. Wireless networks have led to concerns about the security of the user’s data.

Evaluate the advantages and disadvantages of each method of network security.

Describe the roles that a computer can take in a networked world. Roles include client, server, email server, DNS server, router and firewall.

Discuss the social and ethical issues associated with a networked world. Develop an appreciation of the social and ethical issues associated with continued developments in computer systems.

Topics for Student Presentations

1. Describe the hardware and software components of a wireless network (Irfan)

2. Peer to peer and Client - Server (Robin)

3. Encryption types, UserID, Trusted MAC address (David)

4. Email server (Syd)

5. Internet, Extranet, Intranet. (Armand G.)

6. Router and Firewall (Chan)

7. DNS Server and VPN. (Armand B.)

8. Wifi, Wimax, 3G. LTE (Jun)

9. WEP, WPA, WPA2. (Alasdair)

Student notes on google drive: https://docs.google.com/a/brent.edu.ph/document/d/1OwZSwqxuYzN8MvemyaM07AABEgcTK1LfsPHTqq-_fIk/edit?usp=drive_web

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