Study Notes
To connect to a network, devices must be managed and identified using device names, IP addresses, and MAC addresses. Key network components include routers, servers, cables, and wireless access points, while ISPs, browsers, search engines, and filter software play roles in internet connectivity.
- Network Operating System (NOS) — Specialist software that manages and coordinates network resources. Example: Windows Server, Linux-based systems
- Device Name — A human-readable label assigned to a device. Example: "Johns-Laptop"
- IP Address — A numerical address identifying a device's location on the network. Example: 192.168.1.10
- MAC Address — A unique hardware identifier permanently assigned to a device's network interface card. Example: 00:1A:2B:3C:4D:5E
- Router — Directs data packets between networks, determining the best path for information. Example: Home router connecting multiple devices to the internet
- Internet Service Provider (ISP) — A company that provides access to the internet. Example: National broadband providers
- Web Browser — Software application that displays web pages and allows users to navigate the internet. Example: Chrome, Firefox
- Search Engine — A website that helps users find information on the internet. Example: Google, Bing
- Filter Software — Blocks or restricts access to certain websites and online content. Example: Parental control software
Exam Tips
Key Definitions to Remember
- Network Operating System (NOS)
- Device Name
- IP Address
- MAC Address
- Router
- Internet Service Provider (ISP)
- Web Browser
- Search Engine
- Filter Software
Common Confusions
- Confusing IP addresses with MAC addresses
- Misunderstanding the difference between a web browser and a search engine
Typical Exam Questions
- What is the difference between an IP address and a MAC address? An IP address is a logical address that can be changed, while a MAC address is a physical address that is permanently assigned.
- Explain the role of a Network Operating System (NOS) in managing network resources. A NOS coordinates communication, controls access to shared resources, manages user permissions, and monitors network performance.
- How can a school extend wireless coverage to a distant building? Install a wireless range extender or booster to rebroadcast the existing wireless signal, extending the coverage area.
- Distinguish between a web browser and a search engine. A web browser displays web pages, while a search engine helps find information on the internet.
What Examiners Usually Test
- Understanding of how devices are identified on a network
- Functions of key network components
- Differences between web browsers and search engines
- Role of ISPs in providing internet access