Download practice_assignment_networking

NETWORKING QUESTIONS FOR PRACTICE
1. What do you understand by the term “computer network”? Why do you need to have a
computer network?
2. Three things are required to set up a network; Hardware, Software and Medium. Explain with
examples what is meant by each.
3. What does topology mean?
4. What is a mesh topology? Draw an example. In what ways a mesh topology is better than a bus
topology? What is the downside of having a mesh topology?
5. What is a star topology? In what ways a star topology is better than a bus topology? What is the
downside of having a star topology?
6. What is a ring topology? Briefly describe the protocol associated with ring topology? On which
layer of the internet model, would you place that protocol? Justify your answer.
7. Assume six devices are arranged in a mesh topology. How many cables are needed? How many
ports are needed at each device?
8. For each of the following four networks, discuss the consequences if a connection fails
a. Five devices arranged in a mesh topology
b. Five devices arranged in a star topology (not counting the hub/switch)
c. Five devices arranged in a bus topology
d. Five devices arranged in a ring topology
9. Draw a hybrid topology with a star backbone and three ring networks
10. Draw a hybrid topology with a ring backbone and three bus networks
11. Draw a hybrid topology with a star backbone connecting two bus backbones. Each bus backbone
connects three ring networks
12. What is a wireless network? What kind of topologies can you have in a wireless network? Can
you have a mesh topology in a wireless network? Justify your answer.
13. What are packets? What are the advantages of transferring data in packets? What are the
different parts of a packet and what is the function of each part?
14. If you don’t transfer data in packets, what is the other way by which you can transfer data?
15. What is the difference between a packet switched network and a circuit switched network? Give
examples of both.
16. What is the difference between circuit switched telephony and packet switched telephony?
What do you understand by Voice over IP?
17. What is the difference between Public Switched Telephone Network (PSTN) and Internet?
18. What is meant by the term “real time”? Give examples of real time traffic and real time
operating system.
19. What are the demands for real time traffic transfer? Would you like to transfer real time traffic
over a packet switched network or a circuit switched network? Justify your answer.
20. What is the difference between video streaming and video download?
21. What is the difference between file upload and file download? Name the devices that get
involved in uploading or downloading of files.
22. What is meant by a protocol? Why do you need to have protocols?
23. What would you want to have layers in the networking software? Give two reasons.
24. What do you understand by layers in the question above?
25. What are the five internet layers? Briefly describe functions of each.
26. Match the following to one of the five internet layers
a. Providing access to the network for the end user
b. Transmission of bits across a physical medium
c. Process-to-process data transportation
d. Responsibility for delivery between adjacent nodes
e. Packet delivery from source node to destination node
f.
Selection of next hop
27. What kind of addressing is used at the different layers of Internet model? What is the purpose
of each of these addressing?
28. When it is said that data from node/computer A to node/computer B goes over 5 hops, what is
meant by hops?
29. What is meant by
a. Single-hop data transmission
b. Multi-hop data transmission
c. 3-hop data transmission
30. What are the parts of an IP address? How can you separate the parts?
31. What is the function of a DNS server?
32. How does a search engine work?
33. What is meant by URL? Give an example of URL. Also explain the different parts of a URL.
34. What is
a. HTTP
b. FTP
35. What tool allows you to log in to a remote computer and use it as your own?
36. What is meant by a public FTP archive?
37. What is an email server? Describe with the help of a diagram how email works.