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<=KNEC Diploma in ICT module 3 Data Communication and Networking past paper: July 2009.
Identify two levels of synchronization that may be applied to a communication system
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Questions List:
1. Distinguish between microwave and infrared signals as used in data communication
2. Explain the one advantage of synchronous over asynchronous data transmission
3. A bank is to transmit data from Kenya to United States of America. Describe three transmission impairments likely to affect data while on transit
4. State the sampling theorem as applied in pulse code modulation
5. Explain the function of a demultiplexer
6. With the aid of a diagram describe delta modulation technique
7. Distinguish between wavelength division multiplexing and code division multiplexing
8. Explain one advantage of distributed routing algorithm
9. Explain the function of each of the following layers of the OSI reference model: i) Data link ii)Session iii)Presentation
10. Explain two factors that necessitate network segmentation
11. With the aid of a diagram, describe circuit switching technique
12. Distinguish between the two types of ISDN interfaces
13. Outline the procedure for manually assigning a computer an IP address. Assume window based operating system environment
14. Explain one danger that may arise due to use of telnet service by organizational employees
15. Figure 1 shows a typical port in a computer system. State two devices that may be connected to the port.
16. Identify two levels of synchronization that may be applied to a communication system
17. State two disadvantages of a mesh topology
18. Explain the following terms as used in error control: i) overhead bits; ii) Sliding window
19. Outline three security levels that can be applied in a network
20. Distinguish between a datagram and a frame
21. During a network configuration, a student used the commands ping and traceroute. Distinguish between the two commands
22. Describe the operation of a bridge
23. Define the following terms as applied in data communication: I)protocol II)Parity bit
24. Explain the term piggy backing as used in data communication
25. Figure shows a window generated during a browsing session. Use it to answer the questions that follow i)State two possible causes of the message generated. ii)Other than the web browser displayed in the window, state two other browsers that can be used. iii) Explain the function of each of the following features labeled I and II
26. Outline four advantages of fibre optic cable over coaxial cable
27. Plazo international company has won a tender to install a wide area network for a particular bank across the country. Explain four factors to be considered during network design
28. Explain one disadvantage of flooding routing technique
29. State one application of flooding routing technique
30. Study figure 5 and then answer the question that follows Identify the multiplexing technique represented by the diagram
31. Explain two advantages of installing air conditioning systems in a computer room
32. Distinguish between data and baud as applied in data transmission
33. Describe a virtual circuit
34. The following are typical IP addresses for computers in a network. Identify the class for each IP address. i) 129.151.4.8 iii) 192.110.103.22 iii) 122.117.100.21
35. Describe the following network standards: i) 10Broad36; ii)1000BaseT
1. Distinguish between microwave and infrared signals as used in data communication
2. Explain the one advantage of synchronous over asynchronous data transmission
3. A bank is to transmit data from Kenya to United States of America. Describe three transmission impairments likely to affect data while on transit
4. State the sampling theorem as applied in pulse code modulation
5. Explain the function of a demultiplexer
6. With the aid of a diagram describe delta modulation technique
7. Distinguish between wavelength division multiplexing and code division multiplexing
8. Explain one advantage of distributed routing algorithm
9. Explain the function of each of the following layers of the OSI reference model: i) Data link ii)Session iii)Presentation
10. Explain two factors that necessitate network segmentation
11. With the aid of a diagram, describe circuit switching technique
12. Distinguish between the two types of ISDN interfaces
13. Outline the procedure for manually assigning a computer an IP address. Assume window based operating system environment
14. Explain one danger that may arise due to use of telnet service by organizational employees
15. Figure 1 shows a typical port in a computer system. State two devices that may be connected to the port.
16. Identify two levels of synchronization that may be applied to a communication system
17. State two disadvantages of a mesh topology
18. Explain the following terms as used in error control: i) overhead bits; ii) Sliding window
19. Outline three security levels that can be applied in a network
20. Distinguish between a datagram and a frame
21. During a network configuration, a student used the commands ping and traceroute. Distinguish between the two commands
22. Describe the operation of a bridge
23. Define the following terms as applied in data communication: I)protocol II)Parity bit
24. Explain the term piggy backing as used in data communication
25. Figure shows a window generated during a browsing session. Use it to answer the questions that follow i)State two possible causes of the message generated. ii)Other than the web browser displayed in the window, state two other browsers that can be used. iii) Explain the function of each of the following features labeled I and II
26. Outline four advantages of fibre optic cable over coaxial cable
27. Plazo international company has won a tender to install a wide area network for a particular bank across the country. Explain four factors to be considered during network design
28. Explain one disadvantage of flooding routing technique
29. State one application of flooding routing technique
30. Study figure 5 and then answer the question that follows Identify the multiplexing technique represented by the diagram
31. Explain two advantages of installing air conditioning systems in a computer room
32. Distinguish between data and baud as applied in data transmission
33. Describe a virtual circuit
34. The following are typical IP addresses for computers in a network. Identify the class for each IP address. i) 129.151.4.8 iii) 192.110.103.22 iii) 122.117.100.21
35. Describe the following network standards: i) 10Broad36; ii)1000BaseT
