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Unit 2: Data Communication and Networking (15 Hours)

1. What does LAN stand for?

2. Which device forwards data packets between computer networks?

3. What does IP stand for?

4. Which type of network covers a large geographical area?

5. A modem is used to:

6. Which protocol is used to send emails?

7. What is the function of a router?

8. Which topology connects each device to a central hub?

9. What does Wi-Fi stand for?

10. What is a firewall used for in networking?

11. What is bandwidth?

12. Which layer of the OSI model is responsible for routing?

13. What type of cable is commonly used in LANs?

14. The purpose of a repeater is to:

15. What does VPN stand for?

16. A MAC address is associated with which OSI layer?

17. Which protocol provides a secure version of HTTP?

18. What does DNS do?

19. The internet primarily uses which protocol for data transfer?

20. A switch operates at which OSI layer?

21. Which device connects two different networks?

22. What is a subnet mask?

23. The FTP protocol is used for:

24. Which protocol is commonly used for web browsing?

25. A star topology has a central:

26. An IP address consists of:

27. The TCP/IP model has how many layers?

28. The purpose of DHCP is to:

29. Which OSI layer handles encryption?

30. What type of address is used in the Network layer?

31. A switch and a hub differ in that:

32. The term latency refers to:

33. What is NAT used for?

34. The HTTP protocol works on which layer of OSI?

35. Which port does HTTPS typically use?

36. An ISP is a:

37. What does SSID stand for in wireless networking?

38. A ring topology connects devices in:

39. The OSI model has how many layers?

40. Which layer ensures reliable data transmission?

41. What is the function of DNS?

42. Which protocol is used to remotely control another computer?

43. Which protocol assigns IP addresses dynamically?

44. The main function of a firewall is to:

45. Which device combines data from multiple devices?

46. Which layer is responsible for error-checking?

47. SMTP is used to:

48. A VPN is used for:

49. Which layer translates domain names to IP addresses?

50. The application layer protocol for web pages is: