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<=KNEC Diploma in ICT module 3 Data Communication and Networking past paper: November 2022
Distinguish between frequency division multiplexing (FDM) and time division multiplexing (TDM).
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Questions List:
1. State two advantages of multiplexing in data communication system
2. Distinguish between frequency division multiplexing (FDM) and time division multiplexing (TDM).
3. Explain two types of transmission impairment.
4. Mary designed a network for her company by connecting the existing Local Area Network to the Internet. Explain the reasons for using the following hardware devices in the tasks: (i) Bridge; (ii) Router; (iii) NIC.
5. Bidii Company Ltd. is considering replacing their network cables with fibre optic cables. Outline four challenges that they are likely to face.
6. Explain each of the following terms as used in feedback-based control techniques of transport protocol. (i) Stop-and-wait; (ii) Sliding window.
7. Distinguish between peer-to-peer and client-server networks.
8. Excel Company Ltd. Uses wireless transmission media to communicate to their clients using broadcast methods. (i) Explain the term broadcast; (ii) Describe two ways of wireless transmission media that could be used by the company.
9. Explain three circumstances that would necessitate the implementation of encryption network security system.
10. Outline two components that can be used as Data Terminating Equipment in a computer network
11. Explain each of the following error detection methods (I) Parity check; (II) Cyclic redundancy check
12. An organization that is located in ABY building has designed their network using 10 Base T Ethernet Standard. Explain two characteristics of 10 base T cable in Ethernet technology.
13. Explain two circumstances that would necessitate the use of Bluetooth in an office
14. With an aid of an example in each case, explain three modes of data transmission
15. List four examples of Network operating systems
16. Differentiate between sign-up and sign-in as used in internet.
17. Aisha bought communication software in a DVD which she intends to use in her computer. (i) Explain two considerations to be made for the successful installation of the software (ii)Outline three advantages of installing the software on the computer hard disk instead of running it the software directly from the DVD.
18. ) Infosys Company Ltd. Offers Internet services in the country using DSL connections. (i) Outline two limitations of using that connections (ii) Describe two types that the company could have used.
19. Distinguish between CSMA/CD and token ring media access methods
20. With aid of a diagram, describe packet switched network.
21. List four types of OSPF protocol routers.
22. Explain one function of each of the following internet protocols: (I) SMTP; (II) FTP.
23. Figure 1 shows a frame format of IEEE 803.3. use it to answer the question that follows:
24. Outline four roles of IP as used in TCP/IP
25. Salim a network administrator was troubleshooting the company’s network after several complaints from the user on network congestions. (i) Outline two causes of this congestion; (ii) Suggest two ways of solving the problem in (i).
26. List four examples of network operating system software.
27. Differentiate between BCC and CC as used in email program;
28. Define the following terms as used in the internet: (I) hypertext; (II) cookie (III) Chat; (IV) Website
29. Explain two uses of antivirus software
30. Figure 2 shows a coaxial cable for data communication. Use it to answer the questions that follow.
31. List four examples of social sites that support real time chat.
32. Peter intends to troubleshoot a network that has physical connectivity issues. (i) Outline three faults that may be realized (ii) Explain two strategies that he could use to counter the problems
33. A-Zed Company Ltd. Distributed the newest network operating system software in the market to a few of its clients for review. Unfortunately, the feedback was negative. Describe three technological changes causing this problem.
34. With aid of a diagram, describe the following data transmission methods: (i) Synchronous; (ii) Asynchronous.
1. State two advantages of multiplexing in data communication system
2. Distinguish between frequency division multiplexing (FDM) and time division multiplexing (TDM).
3. Explain two types of transmission impairment.
4. Mary designed a network for her company by connecting the existing Local Area Network to the Internet. Explain the reasons for using the following hardware devices in the tasks: (i) Bridge; (ii) Router; (iii) NIC.
5. Bidii Company Ltd. is considering replacing their network cables with fibre optic cables. Outline four challenges that they are likely to face.
6. Explain each of the following terms as used in feedback-based control techniques of transport protocol. (i) Stop-and-wait; (ii) Sliding window.
7. Distinguish between peer-to-peer and client-server networks.
8. Excel Company Ltd. Uses wireless transmission media to communicate to their clients using broadcast methods. (i) Explain the term broadcast; (ii) Describe two ways of wireless transmission media that could be used by the company.
9. Explain three circumstances that would necessitate the implementation of encryption network security system.
10. Outline two components that can be used as Data Terminating Equipment in a computer network
11. Explain each of the following error detection methods (I) Parity check; (II) Cyclic redundancy check
12. An organization that is located in ABY building has designed their network using 10 Base T Ethernet Standard. Explain two characteristics of 10 base T cable in Ethernet technology.
13. Explain two circumstances that would necessitate the use of Bluetooth in an office
14. With an aid of an example in each case, explain three modes of data transmission
15. List four examples of Network operating systems
16. Differentiate between sign-up and sign-in as used in internet.
17. Aisha bought communication software in a DVD which she intends to use in her computer. (i) Explain two considerations to be made for the successful installation of the software (ii)Outline three advantages of installing the software on the computer hard disk instead of running it the software directly from the DVD.
18. ) Infosys Company Ltd. Offers Internet services in the country using DSL connections. (i) Outline two limitations of using that connections (ii) Describe two types that the company could have used.
19. Distinguish between CSMA/CD and token ring media access methods
20. With aid of a diagram, describe packet switched network.
21. List four types of OSPF protocol routers.
22. Explain one function of each of the following internet protocols: (I) SMTP; (II) FTP.
23. Figure 1 shows a frame format of IEEE 803.3. use it to answer the question that follows:
24. Outline four roles of IP as used in TCP/IP
25. Salim a network administrator was troubleshooting the company’s network after several complaints from the user on network congestions. (i) Outline two causes of this congestion; (ii) Suggest two ways of solving the problem in (i).
26. List four examples of network operating system software.
27. Differentiate between BCC and CC as used in email program;
28. Define the following terms as used in the internet: (I) hypertext; (II) cookie (III) Chat; (IV) Website
29. Explain two uses of antivirus software
30. Figure 2 shows a coaxial cable for data communication. Use it to answer the questions that follow.
31. List four examples of social sites that support real time chat.
32. Peter intends to troubleshoot a network that has physical connectivity issues. (i) Outline three faults that may be realized (ii) Explain two strategies that he could use to counter the problems
33. A-Zed Company Ltd. Distributed the newest network operating system software in the market to a few of its clients for review. Unfortunately, the feedback was negative. Describe three technological changes causing this problem.
34. With aid of a diagram, describe the following data transmission methods: (i) Synchronous; (ii) Asynchronous.
