Networks

Network fundamentals

3.1.1: 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), peer-to-peer (P2P).

3.1.2: Outline the importance of standards in the construction of networks

3.1.3: 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.

3.1.4: Identify the technologies required to provide a VPN

3.1.5: Evaluate the use of a VPN

Data transmission

3.1.6: Define the terms protocol, data packet

3.1.7: Explain why protocols are necessary

This should include data integrity, flow control, deadlock, congestion, error checking.

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

3.1.9: Explain why compression of data are often necessary when transmitting across a network

3.1.10: Outline the characteristics of different transmission media

Characteristics include speed, reliability, cost, and security. Transmission media include metal conductor, fibre optic, and wireless.

3.1.11: Explain how data are transmitted by packet switching

Wireless networking

3.1.12: Outline the advantages and disadvantages of wireless networks

3.1.13: Describe the hardware and software components of a wireless network

3.1.14: Describe the characteristics of wireless networks

Include WiFi, Worldwide Interoperability for Microwave Access (WiMAX), 3G mobile, future networks.

3.1.15: Describe the different methods of network security

Include encryption types, userID, and trusted media access control (MAC) addresses.

3.1.16: Evaluate the advantages and disadvantages of each method of network security

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