2. Describe What Routers Are Used For

Network Devices

Questions:

1.  List 7 pieces of hardware that are used to build a network.

2. Describe what routers are used for.

3. Routers can be described as being ‘intelligent’ devices. Explain 3 functions that routers perform that make them intelligent.

Routers are intelligent because:
1.
2.
3.

4.  What does IP address stand for?

5. Explain what an IP address is.

6. How does a router store IP addresses?

7. Explain how a router uses IP addresses and a routing table to send data to its correct destination.

8.  Find an image that shows how routers use IP addresses to send data to the correct destination and paste it below:

9.  Describe what network interface cards are used for.

10. Describe the difference between a wired network interface card and a wireless network interface card.

11. Find 2 images that show how wired and wireless network interface cards connect computers to a network and paste it below:

12. Describe what network cables are used for.

13. Describe 2 advantages that network cables hold over forming networks with wireless technology.

14. Describe what hubs are used for.

15.  Hubs can be described as being ‘unintelligent’ devices. Explain why hubs are considered unintelligent.

16.  Why would a network connected using a hub run very slowly?

17. Find an image of a network connected through a hub and paste below (Make sure to highlight the problem of too much data flowing around the network in the image).

18. Explain what a switch is used for.

19. Switches are said to be ‘intelligent’ devices. Explain 3 functions that switches perform that make them intelligent.

Switches are intelligent because:
1.
2.
3.

.

20. Find an image of a network connected through a switch and paste below (Make sure that the image shows how switches use MAC addresses to control data flow).

21. Explain what a bridge is used for.

22. Find an image of 2 networks connected through a bridge and paste below:

23. Explain what modems are used for.

24. What does modem stand for?

25. Explain how modems can convert data between analogue and digital so that it can be transmitted over telephone lines.

26. What is the purpose of an analogue to digital converter (ADC)?

27. What is the purpose of a digital to analogue converter (DAC)?

28. Explain the difference between a router and a modem.

29. Find an image showing how a modem can convert data between analogue and digital and paste below:

IGCSE ICT: Unit 4 - Networks and the effects of using them Mark Nicholls - ICT Lounge