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Showing posts with label ugc net computer science solved question paper. Show all posts
Showing posts with label ugc net computer science solved question paper. Show all posts

Monday, November 23, 2015

UGC NET Solved Paper -I June 2015

UGC NET Solved Paper -I June 2015

1. Which of the following is the highest level of cognitive ability ?
(1) Knowing (2) Understanding (3) Analysing (4) Evaluating

2. Which of the following factors does not impact teaching ?
(1) Teacher's knowledge
(2) Class room activities that encourage learning
(3) Socio-economic background of teachers and students
(4) Learning through experience

3. Which of the following statements about teaching aids are correct ?
(a) They help in retaining concepts for longer duration.
(b) They help students learn better.
(c) They make teaching learning process interesting.
(d) They enhance rote learning.
Select the correct answer from the codes given below :
(1) (a), (b), (c) and (d)
(2) (a), (b) and (c)
(3) (b), (c) and (d)
(4) (a), (b) and (d)

4. Techniques used by a teacher to teach include :
(a) Lecture
(b) Interactive lecture
(c) Group work
(d) Self study
Select the correct answer from the codes given below :
(1) (a), (b) and (c)
(2) (a), (b), (c) and (d)
(3) (b), (c) and (d)
(4) (a), (b) and (d)

5. Achievement tests are commonly used for the purpose of :
(1) Making selections for a specific job
(2) Selecting candidates for a course
(3) Identifying strengths and weaknesses of learners
(4) Assessing the amount of learning after teaching

6. A good teacher is one who:
(1) gives useful information
(2) explains concepts and principles
(3) gives printed notes to students
(4) inspires students to learn

7. Which of the following statements regarding the meaning of research are correct ?
(a) Research refers to a series of systematic activity or activities undertaken to find out the solution of a problem.
(b) It is a systematic, logical and an unbiased process wherein verification of hypothesis, data analysis, interpretation and formation of principles can be done.
(c) It is an intellectual enquiry or quest towards truth.
(d) It leads to enhancement of knowledge.
Select the correct answer from the codes given below :
(1) (a), (b) and (c)
(2) (b), (c) and (d)
(3) (a), (c) and (d)
(4) (a), (b), (c) and (d)

8. A good thesis writing should involve :
(a) reduction of punctuation and grammatical errors to a minimum.
(b) careful checking of references.
(c) consistency in the way the thesis is written.
(d) a clear and well written abstract.
Select the correct answer from the codes given below :
(1) (a), (b), (c) and (d)
(2) (a), (b) and (c)
(3) (a), (b) and (d)
(4) (b), (c) and (d)

9. Jean Piaget gave a theory of cognitive development of humans on the basis of his :
(1) Fundamental Research (2) Applied Research
(3) Action Research (4) Evaluation Research

10. "Male and female students perform equally well in a numerical aptitude test." This statement
indicates a :
(1) research hypothesis (2) null hypothesis
(3) directional hypothesis (4) statistical hypothesis

11. The conclusions/findings of which type of research cannot be generalized to other
situations ?
(1) Historical Research (2) Descriptive Research
(3) Experimental Research (4) Causal Comparative Research

12. Which of the following steps are required to design a questionnaire ?
(a) Writing primary and secondary aims of the study.
(b) Review of the current literature.
(c) Prepare a draft of questionnaire.
(d) Revision of the draft.
Select the correct answer from the codes given below :
(1) (a), (b) and (c)
(2) (a), (c) and (d)
(3) (b), (c) and (d)
(4) (a), (b), (c) and (d)

Read the following passage carefully and answer questions 13 to 18.
Story telling is not in our genes. Neither it is an evolutionary history. It is the essence of what makes us Human.
Human beings progress by telling stories. One event can result in a great variety of stories being told about it. Sometimes those stories differ greatly. Which stories are picked up and repeated and which ones are dropped and forgotten often determines how we progress. Our history, knowledge and understanding are all the collections of the few stories that survive. This includes the stories that we tell each other about the future. And how the future will turn out depends partly, possibly largely, on which stories we collectively choose to believe.
Some stories are designed to spread fear and concern. This is because some story-tellers feel that there is a need to raise some tensions. Some stories are frightening, they are like totemic warnings : "Fail to act now and we are all doomed." Then there are stories that indicate that all will be fine so long as we leave everything upto a few especially able adults. Currently, this trend is being led by those who call themselves "rational optimists". They tend to claim that it is human nature to compete and to succeed and also to profit at the expense of others. The rational optimists however, do not realize how humanity has progressed overtime through amiable social networks and how large groups work in less selfishness and in the process accommodate rich and poor, high and low alike. This aspect in story-telling is considered by the 'Practical Possibles', who sit between those who say all is fine and cheerful and be individualistic in your approach to a successful future, and those who ordain pessimism and fear that we are doomed. What the future holds for us is which stories we hold on to and how we act on them.
 
Answer the following questions :
13. Our knowledge is a collection of:
(1) all stories that we have heard during our life-time
(2) some stories that we remember
(3) a few stories that survive
(4) some important stories

14. Story telling is:
(1) an art    (2) a science    (3) in our genes     (4) the essence of what makes us human

15. How the future will turn out to be, depends upon the stories ?
(1) We collectively choose to believe in
(2) Which are repeatedly narrated
(3) Designed to spread fear and tension
(4) Designed to make prophecy

16. Rational optimists :
(a) Look for opportunities.
(b) Are sensible and cheerful.
(c) Are selfishly driven.
Identify the correct answer from the codes given below :
(1) (a), (b) and (c) 
(2) (a) only
(3) (a) and (b) only
(4) (b) and (c) only

17. Humans become less selfish when:
(1) they work in large groups
(2) they listen to frightening stories
(3) they listen to cheerful stories
(4) they work in solitude

18. 'Practical Possibles' are the ones who :
(1) follow Midway Path (2) are doom-mongers
(3) are self-centred (4) are cheerful and carefree

19. Effectiveness of communication can be traced from which of the following ?
(a) Attitude surveys
(b) Performance records
(c) Students attendance
(d) Selection of communication channel
Select the correct answer from the codes given below:
(1) (a), (b), (c) and (d)
(2) (a), (b) and (c) 
(3) (b), (c) and (d)
(4) (a), (b) and (d)

20. Assertion (A) : Formal communication tends to be fast and flexible.
Reason (R) : Formal communication is a systematic and orderly flow of information.
(1) Both (A) and (R) are correct and (R) is correct explanation of (A)
(2) Both (A) and (R) are correct, but (R) is not correct explanation of (A)
(3) (A) is correct but, (R) is false
(4) (A) is false but, (R) is correct

21. Which of the following are the characteristic features of communication ?
(a) Communication involves exchange of ideas, facts and opinions.
(b) Communication involves both information and understanding.
(c) Communication is a continuous process.
(d) Communication is a circular process.
Select the correct answer from the codes given below :
(1) (a), (b) and (c)
(2) (a), (b) and (d)
(3) (b), (c) and (d)
(4) (a), (b), (c) and (d)

22. The term 'grapevine' is also known as :
(1) Downward communication
(2) Informal communication
(3) Upward communication
(4) Horizontal communication

23. Which of the following is not a principle of effective communication ?
(1) Persuasive and convincing dialogue
(2) Participation of the audience
(3) One-way transfer of information

(4) Strategic use of grapevine
24. In communication, the language is :
(1) The verbal code (2) Intrapersonal
(3) The symbolic code (4) The non-verbal code

25. The next term in the series is:
2, 5, 9, 19, 37, ?
(1) 73 (2) 75 (3) 78 (4) 80

26. In certain code MATHURA is coded as JXQEROX. The code of HOTELS will be :
(1) LEQIBP (2) ELQBIP (3) LEBIQP (4) ELIPQB

27. One day Prakash left home and walked 10 km towards south, turned right and walked 5 km, turned right and walked 10 km and turned left and walked 10 km. How many km will he have to walk to reach his home straight ?
(1) 10 (2) 20 (3) 15 (4) 30

28. A girl introduced a boy as the son of the daughter of the father of her uncle. The boy is
related to the girl as:
(1) Brother (2) Uncle (3) Nephew (4) Son

29. In an examination 10,000 students appeared. The result revealed the number of students who have :
passed in all five subjects                           =  5583
passed in three subjects only                    =  1400
passed in two subjects only                       =  1200
passed in one subject only                         =  735
failed in English only                                  =  75
failed in Physics only                                 =  145
failed in Chemistry only                            =  140
failed in Mathematics only                       =   200
failed in Bio-science only                          =   157
The number of students passed in at least four subjects is :
(1) 6300 (2) 6900 (3) 7300 (4) 7900

30. At present a person is 4 times older than his son and is 3 years older than his wife. After
3 years the age of the son will be 15 years. The age of the person's wife after 5 years will
be:
(1) 42 (2) 48 (3) 45 (4) 50

31. If we want to seek new knowledge of facts about the world, we must rely on reason of the
type:
(1) Inductive (2) Deductive (3) Demonstrative (4) Physiological

32. A deductive argument is invalid if:
(1) Its premises and conclusions are all false
(2) Its premises are true but its conclusion is false
(3) Its premises are false but its conclusion is true
(4) Its premises and conclusions are all true

33. Inductive reasoning is grounded on :
(1) Integrity of nature (2) Unity of nature
(3) Uniformity of nature
(4) Harmony of nature

34. Among the following statements two are contradictory to each other. Select the correct code that represents them :
Statements :
(a) All poets are philosophers.
(b) Some poets are philosophers.
(c) Some poets are not philosophers.
(d) No philosopher is a poet.
Codes :
(1) (a)and(b)
(2) (a) and (d)
(3) (a) and (c) 
(4) (b) and (c)

35. Which of the codes given below contains only the correct statements ?
Select the code :
Statements :
(a) Venn diagram represents the arguments graphically.
(b) Venn diagram can enhance our understanding.
(c) Venn diagram may be called valid or invalid.
(d) Venn diagram is clear method of notation.
Codes :
(1) (a), (b) and (c) 
(2) (a), (b) and (d)
(3) (b), (c) and (d)
(4) (a), (c) and (d)

36. When the purpose of a definition is to explain the use or to eliminate ambiguity the definition
is called:
(1) Stipulative
(2) Theoretical
(3) Lexical
(4) Persuasive
Codes:
(1) (a), (b), (c) and (d)
(2) (a), (b) and (c)
(3) (a), (b) and (d)
(4) (b), (c) and (d)

Question numbers 37 to 42 are based on the tabulated data given below :
A company has 20 employees with their age (in years) and salary (in thousand rupees per month) mentioned against each of them :
S.NoAge (in years)Salary (in Thousand rupees per month)S.noAge (in years)Salary (in Thousand rupees per month)
1.443511.3330
2.322012.3135
3.544513.3035
4.423514.3740
5.312015.4445
6.536016.3635
7.425017.3435
8.515518.4950
9.342519.4345
10.413020.4550

37. Classify the data of age of each employee in class interval of 5 years. Which class interval of 5 years has the maximum average salary ?
(1) 35-40 years (2) 40 - 45 years (3) 45 - 50 years (4) 50 - 55 years

38. What is the frequency (%) in the class interval of 30 - 35 years ?
(1) 20% (2) 25% (3) 30% (4) 35%

39. What is the average age of the employees ?
(1) 40.3 years (2) 38.6 years (3) 47.2 years (4) 45.3 years

40. What is the fraction (%) of employees getting salary >= 40,000 per month ?
(1) 45% (2) 50% (3) 35% (4) 32%

41. What is the average salary (in thousand per month) in the age group 40 - 50 years ?
(1) 35 (2) 42.5 (3) 40.5 (4) 36.5

42. What is the fraction of employees getting salary less than the average salary of all the employees?
(1) 45% (2) 50% (3) 55% (4) 47%

43. Encoding or scrambling data for transmission across a network is known as :
(1) Protection (2) Detection (3) Encryption (4) Decryption

44. Which of the following is not an output device ?
(1) Printer (2) Speaker (3) Monitor (4) Keyboard

45. Which of the following represents one billion characters ?
(1) Kilobyte (2) Megabyte (3) Gigabyte (4) Terabyte

46. Which of the following is not open source software ?
(1) Internet explorer (2) Fedora Linux
(3) Open office (4) Apache HTTP server

47. Which one of the following represents the binary equivalent of the decimal number 25 ?
(1) 10101 (2) 01101 (3) 11001 (4) 11011

48. Which is an instant messenger that is used for chatting ?
(1) Altavista (2) MAC (3) Microsoft Office (4) Google Talk

49. In which of the countries per capita use of water is maximum ?
(1) USA (2) European Union
(3) China (4) India

50. India's contribution to total global carbon dioxide emissions is about:
(1) -3% (2) -6% (3) -10% (4) -15%

51. Two earthquakes A and B happen to be of magnitude 5 and 6 respectively on Richter Scale. The ratio of the energies released EB/EA will be approximately :
(1) ~8 (2) -16 (3) -32 (4) -64

52. Which of the following combinations represent renewable natural resources ?
(1) Fertile soil, fresh water and natural gas
(2) Clean air, phosphates and biological diversity
(3) Fishes, fertile soil and fresh water
(4) Oil, forests and tides

53. In the recently launched Air Quality Index in India, which of the following pollutants is not included ?
(1) Carbon monoxide (2) Fine particulate matter
(3) Ozone (4) Chlorofluorocarbons

54. The factors which are most important in determining the impact of anthropogenic activities on environment are:
(1) Population, affluence per person, land available per person
(2) Population, affluence per person and the technology used for exploiting resources
(3) Atmospheric conditions, population and forest cover
(4) Population, forest cover and land available per person

55. The session of the parliament is summoned by :
(1) The President
(2) The Prime Minister
(3) The Speaker of the Lok Sabha
(4) The Speaker of the Lok Sabha and the Chairman of the Rajya Sabha

56. Civil Service Day is celebrated in India on :
(1) 21st April (2) 24th April (3) 21st June (4) 7th July

57. The South Asia University is situated in the city of :
(1) Colombo (2) Dhaka (3) New Delhi (4) Kathmandu

58. The University Grants Commission was established with which of the following aims ?
(a) Promotion of research and development in higher education
(b) Identifying and sustaining institutions of potential learning
(c) Capacity building of teachers
(d) Providing autonomy to each and every higher educational institution in India
Select the correct answer from the codes given below :
(1) (a), (b), (c) and (d)
(2) (a), (b) and (c)
(3) (b), (c) and (d)
(4) (a), (b) and (d)

59. The Gross Enrolment Ratio (GER) in institutions of higher education in India at present (2015) is about:
(1) 8 percent (2) 12 percent (3) 19 percent (4) 23 percent

60. The total number of central universities in India in April 2015 was :
(1) 08 (2) 14 (3) 27 (4) 43

Sunday, June 30, 2013

UGC NET Computer Science Solved Paper -II June2013

Questions along with Answers Below - Explanations are always welcome

1. COCOMO stands for
(A) COmposite COst MOdel
(B) COnstructive COst MOdel
(C) COnstructive Composite MOdel
(D) COmprehensive Construction Model

2. Match the following:
a. Good quality     1. Program does not fail for a specified time in a given environment
b. Correctness     ii. Meets the functional requirements
c. Predictable      iii. Meets both functional and non-functional requirements
d. Reliable          iv. Process is under statistical control
Codes:
      a   b  c  d
(A) iii  ii   iv  i
(B) ii   iii  iv  i 
(C) i    ii  iv  iii
(D) i    ii  iii  iv

3. While estimating the cost of software, Lines of Code (LOC) and Function Points (FP) are used to measure which one of the following?
(A) Length of code
(B) Size of software
(C) Functionality of software
(D) None of the above

4. A good software design must have
(A) High module coupling, High module cohesion
(B) High module coupling, Low module cohesion
(C) Low module coupling, High module cohesion
(D) Low module coupling, Low module cohesion

5. Cyclometric complexity of a flow graph G with n vertices and e edges is
(A) V(G) = e+n-2
(B) V(G) = e-n+2
(C) V(G) = e+n+2
(D) V(G) = e-n-2

6. When the following code is executed what will be the value of x and y?
     int x = l, y=0;
          y = x++;
(A) 2,1
(B) 2,2
(C) 1,1
(D) 1,2
 
7. How many values can be held by an array A(-1,m;1 ,m) ?
(A) m
(B) m2
(C) m(m+l)
(D) m(m+2)

8. What is the result of the expression
(1 &2)+(3/4) ?
(A) 1
(B) 2
(C) 3
(D) 0

9. How many times the word 'print' shall be printed by the following program segment?
for(i=1, i≤2, i++)
for(j=1, J≤2, J++)
for(k=1, k≤2, k++)
printf("print/n")
(A) 1
(B) 3
(C) 6
(D) 8

10. Which of the following is not a type of Database Management System?
(A) Hierarchical
(B) Network
(C) Relational
(D) Sequential

11. Manager's salary details are to be hidden from Employee Table. This Technique is called as
(A) Conceptual level Datahiding
(B) Physical level Datahiding
(C) External level Datahiding
(D) Logical level Datahiding

12. A Network Schema
(A) restricts to one to many relationship
(B) permits many to many relationship
(C) stores Data in a Database
(D) stores Data in a Relation

13. Which normal form is considered as adequate for usual database design ?
(A) 2NF
(B) 3NF
(C) 4NF
(D) 5NF


14. If D1, D2,…. Dn are domains in a relational model, then the relation is a table, which is a subset of
(A) D1+D2+…. + Dn
(B) D1x D2x… x Dn
(C) D1U D2U….U Dn
(D) D1- D2-….- Dn


15. Which of the following addresses is used to deliver a message to the correct application program running on a host?
(A) Port
(B) IP
(C) Logical
(D) Physical

16. In substitution, a character in the plaintext is always changed to the same character in the ciphertext, regardless of its position in the text.
(A) polyalphabetic
(B) monoalphabetic
(C) transpositional
(D) multialphabetic

17. In classful addressing, the IF address 190.255.254.254 belongs to
(A) Class A
(B) Class B
(C) Class C
(D) Class D

18. In hierarchical routing with 4800 routers, what region and cluster sizes should be chosen to minimize the size of the routing table for a threelayer hierarchy?
(A) 10 clusters, 24 regions and 20 routers
(B) 12 clusters, 20 regions and 20 routers
(C) 16 clusters, 12 regions and 25 routers
(D) 15 clusters, 16 regions and 20 routers

19. In IPv4 header, the field is needed to allow the destination host to determine which datagram a newly arrived fragments belongs to.
(A) identification
(B) fragment offset
(C) time to live
(D) header checksum

20. Given L1 = L(a*baa*) and L2 = L(ab*)
The regular expression corresponding to language L3 = Ll/L2 (right quotient) is given by
(A) a*b
(B) a*baa*
(C) a*ba*
(D) None of the above


21. Given the production rules of a grammar GI as
S1 à AB | aaB
A à a | Aa
à b
and the production rules of a grammar G2 as
S2 à aS2bS2 | bS2aS2 | λ
Which of the following IS correct statement?
(A) G1 is ambiguous and G2 is not ambiguous.
(B) GI is ambiguous and G2 is ambiguous.
(C) GI is not ambiguous and G2 is ambiguous.
(D) GI is not ambiguous and G2 is not ambiguous.

22. Given a grammar : S1 à Sc, S àSA | A, A à aSb | ab, there is a rightmost derivation
S1 => Sc => SAC => SaSbc Thus, SaSbc is a right sentential form, and its handle is
(A) SaS
(B) be
(C) Sbe
(D) aSb


23. The equivalent production rules corresponding to the production rules
      S à1 | Sα2 | β1 | β2  is
(A) S à β1 | β2, A à α1A | α2A | λ
(B) S à β1 | β2 | β1A | β2A,
      Aà α1A | α2A
(C) Sàβ1 | β2, A à α1A | α2A
(D) S à β1 | β2 | β1A | β2A,
      A à α1A | α2A | λ

24. Given a Non-deterministic Finite Automation (NFA) with states p and r as initial and final states respectively transItion table as given below

a
b
p
-
q
q
r
s
r
r
s
s
r
s
The minimum number of states required in Deterministic Finite Automation (DFA) equivalent to NFA is
(A) 5
(B) 4
(C) 3
(D) 2

25. Which is the correct statement(s) for Non Recursive predictive parser?
S1: First(α) = {t | α => * t β for some string β } => *tβ
S2: Follow(X) = { a | S => * αXa β for some strings α and β }
(A) Both statements S1 and S2 are incorrect.
(B) S1 is incorrect and 52 IS correct.
(C) S1 is correct and S2 IS incorrect.
(D) Both statements S I and S2 are correct. 

26. Given an open address hash table with load factor α < 1, the expected number of probes in a successful search is
(A) Atmost  1/α 1n (1-α/α)
(B) Atmost  1/α 1n (1/1-α)
(C) Atleast  1/α 1n (1/1-α)
(D) Atleast  1/α 1n (α/1-α)

27. For a B-tree of height h and degree t, the total CPU time used to insert a node is
(A) O(h log t)
(B) O(t log h)
(C) O(t2h)
(D) O(th)

28. The time complexity to build a heap with a list of n numbers is
(A) O(log n)
(B) O(n)
(C) O(n log n)
(D) O(n2)

29. The value of postfix expression:
     8 3 4 + - 3 8 2 / + * 2 ^ 3 +  is
(A) 17
(B) 131
(C) 64
(D) 52
Note:  Given $ symbol instead of ^ in the question paper given by UGC

30. Consider the following statements for priority queue:
S1 : It is a data structure in which the intrinsic ordering of the elements does determine the result of its basic operations.
S2: The elements of a priority queue may be complex structures that are ordered on one or several fields.
Which of the following is correct?
(A) Both S1 and S2 are incorrect.
(B) S1 is correct and S2 is incorrect.
(C) SI is incorrect and S2 is correct.
(D) Both S1 and S2 are correct.

31. Repository of information gathered from multiple sources, storing under unified scheme at a single site is called as
(A) Data mining
(B) Meta data
(C) Data warehousing
(D) Database

32. The task of correcting and pre processing data is called as
(A) Data streaming
(B) Data cleaning
(C) Data mining
(D) Data storming

33. Using data p=3, q=11, n=pq, d=7  in RSA algorithm find the cipher text of the given plain text SUZANNE
(A) BUTAEEZ
(B) SUZANNE
(C) XYZABCD
(D) ABCDXYZ  
Explanation:   

35. Give as good a big-Q estimate as possible for the following functions:
(nlogn+n2)(n3+2) and (n!+2n) (n3+log(n2+ 1))
(A) O(n5+2n2) & O(n3*n!)
(B) O(n5) & O(n3*2 n)
(C) O(n5) & O(n3* n!)
(D) O(n5+2n2) & O(n3*2 n)

36. A test contains 100 true/false questions. How many different ways can a student answer the questions on the test, if the answer may be left blank also.
(A) 100P2    (B) 100C2     (C) 2100     (D) 3100 

37. Which of the following connected simple graph has exactly one spanning tree?
(A) Complete graph
(B) Hamiltonian graph
(C) Euler graph
(D) None of the above

38. How many edges must be removed to produce the spanning forest of a graph with N vertices, M edges and C connected components?
(A) M+N-C
(B) M-N-C
(C) M-N+C
(D) M+N+C

39. Which of the following shall be a compound proposition involving the propositions p, q and r. that is true when exactly two of the p. q and rare true and is false otherwise?
(A) (pq˥r) (pqr (˥pqr)
(B) (pqr)   ∧ (pqr(˥q˥p˥r)
(C) (pq˥r) (p˥qr) (˥pqr)
(D) (prq)  ∨ (pqr)   ∨ (˥pqr) 

40. The truth value of the statements:
∃!xP(x) à ∃xP(x) and ∃!x˥P(x) à ˥∀xP(x), (where the notation ∃!xP(x) denotes the proposition "There exists a unique x such that P(x) is true'') are :
(A) True and False
(B) False and True
(C) False and False
(D) True and True

41. How many different Boolean functions of degree 4 are there?
(A) 24
(B) 28
(C) 212
(D) 216

42. A Boolean operator Ө  is defined as follows:
1 Ө 1 =1, 1 Ө 0 = 0, 0 Ө 1= 0 and 0 Ө 0 =1
What will be the truth value of the expression (x Ө y) Ө z = x Ө (y Ө z)?
(A) Always false
(B) Always true
(C) Sometimes true
(D) True when x,y,z are all true

43. Which one of the following is decimal value of a signed binary number 1101010, if it is in 2's complement form ?
(A) -42
(B) - 22
(C) - 21
(D) -106

44. A set of processors P1, P2, ......, Pk can execute in parallel if Bernstein's conditions are satisfied on a pairwise basis; that is
      P1 || P2 || P3 || ..... || Pk if and only if:
(A) Pi || Pj for all i ≠ j
(B) Pi || Pj for all i = j+1
(C) Pi || Pj for all i ≤ j
(D) Pi || Pj for all i ≥ j

45. When a mobile telephone physically moves from one to another cell, the base station transfers ownership to the cell getting strongest signal. This process is known as _______
(A) handoff
(B) mobile switching
(C) mobile routing
(D) cell switching

46. A virtual memory based memory management algorithm partially swaps out a process. This is an example of
(A) short term scheduling
(B) long term scheduling
(C) medium term scheduling
(D) mutual exclusion

47. Assuming that the disk head IS located initially at 32, find the number of disk moves required with FCFS if the disk queue of I/O block requests are 98, 37, 14, 124,65,67 :
(A) 310
(B) 324
(C) 320
(D) 321

48. Let the page fault service time be 10 millisecond(ms) in a computer with average memory access time being 20 nanosecond(ns). If one page fault is generated for every 106 memory accesses, what is the effective access time for memory ?
(A) 21 ns
(B) 23 ns
(C) 30 ns
(D) 35 ns

49. Consider the following UNIX command:
sort <in> temp; head -30 <temp; rm temp
Which of the following functions shall be performed by this command?
(A) Sort, taking the input from "temp", prints 30 lines from temp and delete the file temp
(B) Sort the file "temp", removes 30 lines from temp and delete the file temp
(C) Sort, taking the input from "in" and writing the output to "temp" then prints 30 lines from temp on terminal. Finally "temp" is removed.
(D) Sort, taking the input from "temp" and then prints 30 lines from "temp" on terminal. Finally "temp" is removed.

50. The mv command changes
(A) the inode
(B) the inode-number
(C) the directory entry
(D) both the directory entry and the inode