December 2010 - Question No 36 - 50

36. The dynamic allocation of storage areas with VSAM files is accomplished by

(A) Hashing
(B) Control splits
(C) Overflow areas
(D) Relative recoding

Ans:-B

Explanation:-VSAM stands for Virtual Storage Access Method. It was introduced by IBM. It is a method of managing files. It can speed up the access to data in the files. The dynamic allocation of storage areas with VSAM files is accomplished by Control Splits.

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37. Which of the following command the file names in multiple columns ?

(A) IS–X
(B) IS
(C) IS – 1
(D) IS–f–X

Ans:-B

Explanation:- Although the command appears to look like IS, it should be understood as ls. There is no command called IS anywhere i could think of. ls with a -1 option will list only one entry per line. So option C is ruled out. The purpose of -X option is to sort out the list alphabetically by entry extension. The purpose of -f option is not to sort the list alphabetically. This option also puts on the -a option. So all the files including hidden ones will be displayed. So what is the option which would list columnar listing of names.It is actually -C. But the output of ls -C and ls simply matches and so i have chosen option B as the right answer which is ls itself. If anyone has any other answer or explanation please post it and we can discuss it.

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38. WINDOWS is a _________ operating.

(A) Real time
(B) Multi-user
(C) Preemptive
(D) Non-preemptive

Explanation:- I would straightaway go for the explanation here. The question is a typical UGC Net one intended to confuse the candidates. WINDOWS is specified, no specific version or anything is given. If you consider windows 3.x, it was cooperative and non-preemptive. But windows 95,NT and 2000 are preemptive. Windows 3.x was not multi-user. But windows NT,2000 are multi-user. Again windows 3.x cannot be categorized as a real time operating system also. Since the question itself has got some ambiguity you can choose whatever option which you feel and keep your fingers crossed about it. I would not go with Real time. Anything else i could go with. Please post any other way of understanding this question and the correct answer for this. Till then, i refrain from answering this question.

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39. Page making process from main memory to disk is called

(A) Interruption
(B) Termination
(C) Swapping
(D) None of the above

Ans:-C

Explanation:- Swapping is one of the memory management techniques used by the operating system. Since the size of the RAM is limited and finite, all the processes or programs to be executed cannot be made to fit in it. So the disk is also treated as an extension of the memory and is referred to as virtual memory. The page making process from main memory to disk is called swapping.

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40.A Dead-lock in an Operating System is

(A) Desirable process
(B) Undesirable process
(C) Definite waiting process
(D) All of the above

Ans:-B

Explanation:- Deadlocks are undesirable. In a deadlock situation, processes never finish executing and system resources are tied up, preventing other jobs from ever starting. So the answer for this question is B.

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41. Prototyping is used to

(A) test the software as an end product
(B) expand design details
(C) refine and establish requirements gathering
(D) None of the above

Ans:-C

Explanation:- Prototyping is one of SDLC model. It starts with requirement gathering and establishing a quick prototype which is an early approximation of a final product. This prototype is then evaluated by the customer/user and used to refine the requirements for the software to be developed. So, C is the option.

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42. Which one of these are not software maintenance activity ?

(A) Error correction
(B) Adaptation
(C) Implementation of Enhancement
(D) Establishing scope

Ans:-D

Explanation:- Actually i have had my own doubts with the answer for this question. I have referred to lots of materials and paper and resolved the correct answer for this. According to Lientz and Swanson, software maintenance can be divided into three components. corrective, adaptive and perfective maintenance. Corrective maintenance involves correcting errors or actual faults in the software. So this is option A. Adaptive maintenance is the changes needed as a consequence of some change in the environment in which the system must operate. And this is option B. Finally perfective maintenance refers to changes that originate from user requests. Infact adaptive and perfective categories can be joined together and called as enhancements which is option C. So the only one which is not talked about is option D and so D is the right answer.

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43. The system specification is the first deliverable in the computer system engineering process which does not include

(A) Functional Description
(B) Cost
(C) Schedule
(D) Technical Analysis

Ans:-A

Explanation:- The system specification document describes the system and gives a high-level view of what the system will provide. The system specification is the guide that will allow details on hardware,software and test requirements. So i think functional description will not be a part of system specification. So the correct answer is A.

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44. The COCOMO model was introduced in the book title “Software Engineering Economics” authored by

(A) Abraham Silberschatz
(B) Barry Boehm
(C) C.J. Date
(D) D.E. Knuth

Ans:-B

Explanation:- This is a fairly simple question. COCOMO model was introduced in the book authored by Barry Boehm. So the correct answer is B.

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45. The Warnier diagram enables analyst

(A) to represent information hierarchy in a compact manner
(B) to further identify requirement
(C) to estimate the total cost involved
(D) None of the above

Ans:-A

Explanation:- The Warnier diagram enables analyst to represent information hierarchy in a compact manner. It is also referred to as Warnier-Orr diagram. It is a graphic charting technique used in software engineering for system analysis and design.

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46. A data mart may contain

(A) summarised data
(B) de-normalized data
(C) aggregate departmental data
(D) All of the above

Ans:-D

Explanation:- Datawarehouses are huge. If a department has its own data mart, it can customize the data as the data flows into the data mart from the data warehouse. It can summarize,sort,select and structure its own data.So the option would be D.

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47. Data mining is

(A) the process of extracting valid, previously unknown, comprehensible and actionable information from large databases and using it to make crucial business decisions.
(B) a tool that allows end users direct access and manipulation of data from within data- warehousing environment without the intervention of customised programming activity.
(C )a tool that helps end users extract useful business information from large database.
(D)All of the above

Ans:-A

Explanation:- Since it is a definition of Data Mining which is spoken about, option A is correct.

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48. E-Choupal refers to

(A) calling meeting of Surpanches electronically.
(B) conducting Panchayat meeting using latest electronic gadgets.
(C) providing window of information to villagers and farmers in NIC network.
(D) None of the above

Ans:-C

Explanation:- E-Choupal is an initiative by ITC. Through this initiative they want to empower the farmers with expert knowledge. This would enhance his competitiveness in the global market.

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49. The basic concepts of ethics in information society is/are

(A) Responsibility
(B) Accountability
(C) Liability
(D) All of the above

Ans:-D

Explanation:- Nothing much. The basic concepts of ethics in information society is/are Responsibilty,Accountability and Liability. I think most of you would have guessed it anyway.

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50. One of the distinguished features of super-computer over other category of computer is

(A) parallel processing
(B) highest accuracy level
(C) more speed
(D) more capacity

Ans:-A

Explanation:- Option B is ruled out. But all the other options also look similar but since they are asking about distinguished feature i would go with option A. Any other ideas please post.

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Whew…we are done with December 2010 QP. Wait and watch for the next paper and discussion of its solutions.