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Sunday, 3 May 2015

Foundations of Information Technology - Model question paper for B.E/B.Tech Engineering



1(a) How do you measure the entropy of a message? What is the meaning of entropy of symbols and entropy of the whole message? (6 Marks)
(b) What do you mean by the self-information? Compute the self-information related to the event of tossing a coin. (4 Marks)
(c) What are the differences between static length and variable length coding schemes? Why Huffman compression is called a variable length coding scheme? (6 Marks)
(d) What is LZW compression? What are the advantages of LZW compression over LZ78 compression technique? (4 Marks)
2(a) What are magnetic tapes? Explain how the data is recorded onto the tape. (4 marks)
(b) What is ISO? Why should the software industry get ISO certification? Explain why it is important for the IT industry to get ISO 9001 certification. (4 Marks)
(c) What is system testing? How is system testing carried out? What are the differences between the alpha, beta and acceptance testing? (6 Marks)
(d) What are the reasons foe adopting control flow oriented programmings? Under what circumstances is the control flow oriented programming recommended?
3(a) What do you mean by sharing time sharing operating system? Explain how the time sharing improves the performance of operating system? (4 Marks)
(b) What are real-time systems? Under what circumstances it is necessary to meet the deadline of job? (4 Marks)
(c) What is the difference between a sequential circuit and a combinational circuit? What do you mean by the state of a circuit? Explain with a suitable example. (8 Marks)
(d) What are the problems in SR flip-flop? Explain by using the characteristic table of SR flip flop. (4 Marks)
4(a) Explain the salient features of amplitude modulation. What are the advantages of amplitude modulation? (4 Marks)
(b) What are the importance of sampling process? How are the samples of analog waveform taken? Explain the role of train of pulses. (6 Marks)
(c) What do you understand by ISDN? Explain the salient features of ISDN? Under what circumstances are the ISDN lines required? (6 Marks)
(d) What are the differences between the Local Are Network and Wide Area Network? How are they different from Metropolitan Area Networks? (4 Marks)
5(a) How the charts are prepared in MS Excel? List the types of charts which may be prepared by MS Excel. (6 Marks)
(b) Why Windows is called GUI based system? (4 Marks)
(c) Why an E-mail is considered as most important service offered by internet? Comment on whether an E-mail is secured? (4 Marks)
(d) What do you mean by the term video conferencing? Is there any difference between video telephony and video conferencing? (6 Marks)
6(a) What are the differences between goods and services? What kind of services may be offered in E-commerce? Explain with suitable examples. (6 Marks)
(b) Explain the roles and functions of intermediary on the web. How do the intermediaries work on the web? Explain with suitable examples. (6 Marks)
(c) Define the network infrastructure requirement of E-commerce application. What precaution must be taken in order to get safe and secure execution of business transactions on the web? (4 Marks)
(d) What are the differences between E-commerce and Electronic Data Interchange (EDI)? (4 Marks)
7(a) What are firewalls? What purpose doe the firewall serve? What are the essential differences between static and dynamic firewalls? (6 Marks)
(b) How doe the conventional cryptographic system use the method of simple substitution? Explain with the help of an example. (6 Marks)
(c) What are the differences in procedural and nonprocedural language? Explain with a suitable example. (4 Marks)
(d) Explain those features of SQL, which make it suitable as data definition language. (4 Marks)
8(a) What are the advantages of Java over other programming languages? (4 Marks)
(b) What is VBScript? Is there any relation between VBScript and Visual Basic? What are the application areas of VBScript? (6 Marks)
(c) List the nodal centers of ERNET project. What role these centers are playing in the implementation of this project? Which agency is responsible for providing access to servers abroad? (6 Marks)
(d) Explain the salient features of NICNET. (4 Marks)

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