## Nielit Scientist-B IT 4-12-2016

 Question 1
Given a class named student, which of the following is a valid constructor declaration for the class?
 A Student student(){} B Private final student(){} C Student(student s){} D Void student(){}
OOPS       Constructors
Question 1 Explanation:
A constructor cannot specify any return type, not even void. A constructor cannot be final, static or abstract.
 Question 2
Three or more devices share a link in ____ connection
 A Unipoint B Polarpoint C Point to point D Multipoint
Computer-Networks       Connection-Types
Question 2 Explanation: Question 3
An object can have which of the following multiplicities?
 A Zero B More than one C One D All of the above
Database-Management-System       ER-Model
Question 3 Explanation:
Multiplicity is a definition of cardinality - i.e. number of elements of some collection of elements by providing an inclusive interval of non-negative integers to specify the allowable number of instances of described element. Multiplicity interval has some lower bound and (possibly infinite) upper bound Question 4 The Circuit is equivalent to:
 A Ex-OR B NAND gate C OR gate D AND gate
Digital-Logic-Design       Circuits-Output
Question 4 Explanation:
Given circuit diagram consists of NOR gates.
NOR of “A” is A’
NOR of “A” is B’
We can see that (A’ + B’)’ is same as (A.B) , where + represents OR, represents AND and ' represents complement operation. This is a De Morgan’s law.
((A'+B')')'=(AB)'
Where (AB)' is the NAND of AB
 Question 5
Two alternative packages A and B are available for processing a database having 10k records. Package A requires 0.0001n​2​ time units and package B requires 10nlog​10​n time units​ ​ to process n records. What is the smallest value of k for which package B will be preferred over A?
 A 12 B 10 C 6 D 5
Algorithms       Asymptotic-Complexity
Question 5 Explanation:
As per given information Package B 10nlog​ 10​ n is lesser than or equals to Package A 0.0001n​ 2​ 0
because n​ 2​ is asymptotically larger than nlogn. Finally, 10nlog​ 10​ n ≤ 0.0001n​ 2
Let n = 10​ k​ records. Substitute into 10nlog​ 10​ n ≤ 0.0001n​ 2
10(10​ k​ )log​ 10​ 10​ k​ ≤ 0.0001(10​ k​ )​ 2
10​ k+1​ k ≤ 0.0001 × 10​ 2k
k ≤ 10​ 2k−k−1−4
k ≤ 10​ k−5
According to the problem value 6 is suitable for K.
 Question 6
Earlier name of java programming language was:
 A OAK B D C Netbean D Eclipse
Web-Technologies       Java-Script
Question 6 Explanation:
Oak is a discontinued programming language created by James Gosling in 1991, initially for Sun Micro systems' set-top box project. The language later evolved to become Java.
 Question 7
What is the type of the algorithm used in solving the 4 Queens problem?
 A Greedy B Branch and bound C Dynamic Programming D Backtracking
Question 7 Explanation:
N-Queen problem:​ an arrangement of N queens on a chess board, such that no queen can attack any other queens on the board.The chess queens can attack in any direction as horizontal, vertical, horizontal and diagonal way. A binary matrix is used to display the positions of N Queens, where no queens can attack other queens.
Backtracking is a general algorithm for finding all (or some) solutions to some computational problems, notably constraint satisfaction problems, that incrementally builds candidates to the solutions, and abandons a candidate ("backtracks") as soon as it determines that the candidate cannot possibly be completed to a valid solution.
 Question 8
selection sort,quick sort is a stable sorting method
 A True,True B False, False C True,False D False,False
Algorithms       Sorting
Question 8 Explanation:  Question 9
Which of the following is a platform free language?
 A Java B C C Assembly D Fortran
Web-Technologies       Java-Script
Question 9 Explanation:
• Sun released the Java HotSpot virtual machine and compiler as free software under the GNU General Public License on November 13, 2006, with a promise that the rest of the JDK (that includes the JRE) would be placed under the GPL by March 2007 ("except for a few components that Sun does not have the right to publish in distributable source form under the GPL").

• Java code is platform independent in the sense that the same Java application or algorithms (typically compiled to Java bytecode and packaged in a .jar file) will run identically on Windows and Linux.
•  Question 10
The maximum combined length of the command-line arguments including the spaces between adjacent arguments is:
 A 128 characters B 256 characters C 67 characters D It may very from one OS to another
Operating-Systems       Commandline-Arguments
Question 10 Explanation:
• On computers running Microsoft Windows XP or later, the maximum length of the string that you can use at the command prompt is 8191 characters.

• On computers running Microsoft Windows 2000 or Windows NT 4.0, the maximum length of the string that you can use at the command prompt is 2047 characters.

• And also it may vary with other operating systems
•  Question 11
What is the meaning of following declaration?
int(*P)();
 A P is pointer to function B P is pointer to such function which return type is array C P is array of pointer to function D P is pointer to array of function
Programming       Pointers
Question 11 Explanation:
int *ptr; --This is an array of 7 int* pointers, a pointer to an array of 7 ints
int (*ptr); --This is a pointer to an array of 7 int
int(*P)(); --P is array of pointer to function
int(*P)() ; --​ P is pointer to function
 Question 12
Which of the following sorting procedures is the slowest?
 A Quick sort B Merge sort C Shell sort D Bubble sort
Algorithms       Sorting
Question 12 Explanation:
Bubble sort will execute O(n​ 2​ ) time worst case and also it takes n-1 comparisons. So, bubble sort procedure is the slowest one among all.
 Question 13
The number of unused pointers in a complete binary tree of depth 5 is:
 A 4 B 8 C 16 D 32
Data-Structures       Trees
Question 13 Explanation:
It gives ambitious answer. It may give 32 if root start from 0. It start from means 16.
 Question 14
Normalization from which is based on transitive dependency is classified as:
 A First normal form B Second normal form C Fourth normal form D Third normal form
Database-Management-System       Normalization
Question 14 Explanation:
The table is in 3NF if and only if both of the following conditions hold:
1. The relation R (table) is in second normal form (2NF)
2. Every non-prime attribute of R is non-transitively dependent on every key of R.
 Question 15
A__ is a linear list in which insertions and deletions are made to from either end of the structure.
 A Circular queue B Priority queue C Stack D Dequeue
Data-Structures       Queues-and-Stacks
Question 15 Explanation:
● A deque, also known as a double ended queue, is an ordered collection of items similar to the queue. It has two ends, a front and a rear, and the items remain positioned in the collection.
● What makes a deque different is the unrestrictive nature of adding and removing items.New items can be added at either the front or the rear.
● Likewise, existing items can be removed from either end. In a sense, this hybrid linear structure provides all the capabilities of stacks and queues in a single data structure.
There are 15 questions to complete.

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## Scientific Assistance 4-12-16

 Question 1
In the following questions choose the word opposite in the meaning to the given word.
Antagonism:
 A Cordiality B Animosity C Hostility D Enmity
Question 1 Explanation:
→ Actual meaning of Antagonism is active hostility or opposition.
→ Antonyms are hostility, enmity, antipathy, dislike, hatred, aggression.
 Question 2
In the following questions choose the word opposite in the meaning to the given word.
Hasten:
 A Dash B Dawdle C Hurry D Scurry
Question 2 Explanation:
→ Hasten meaning is be quick to do something.
→ Antonyms are dally, dawdle, dillydally, drag, hang (around or out), lag, linger, loiter, poke, tarry, amble, lumber, plod, saunter, shuffle, stroll.
 Question 3
In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word.
Camouflage:
 A Disguise B Cover C Demonstrate D Fabric
Question 3 Explanation:
→ Camouflage meaning is the disguising of military personnel, equipment, and installations by painting or covering them to make them blend in with their surroundings.
→ Camouflage synonyms are costume, disguise, guise.
 Question 4
In the following questions, out of the four alternatives, choose the one which best expresses the meaning of the given word.
Yearn:
 A Deny B Accept C Confront D Crave
Question 4 Explanation:
→ Yearn meaning is have an intense feeling of longing for something, typically something that one has lost or been separated from.
→ Yearn synonym is ache, covet, crave, desiderate, desire, die, hanker.
 Question 5
The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the questions based on it. What is the central angle of the sector corresponding to the expenditure incurred on Royalty ?
 A 15​ 0 B 24​ 0 C 54​ 0 D 48​ 0
Question 5 Explanation:
According to Diagram the circle is in the form of 360°
From that Diagram Expenditure incurred on Royalty is 15%
ஃ 360*(15/100) = 54°
 Question 6
The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the questions based on it. The price of the magazine is marked 20% above the C.P. If the marked price of the magazine is ₹ 180, then what is the cost of the paper used in a single copy of the magazine?
 A ₹ 36 B ₹ 37.50 C ₹ 42 D ₹ 44.25
Question 6 Explanation:
Let’s C.P = x
M.P = 120 x / 100
From that question M.P of Magazine is = 180/-
Cost of the paper in a single copy = ?
From the above details we have to find out C.P first
180 x = x (120 x / 100)
After solving this
x = 150
Cost of the paper in a single copy
= 150 * (25/100)
= 37.50
 Question 7
The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the questions based on it. If for a certain quantity of magazine, the publisher has to pay ₹ 30,600 as printing cost, then what will be amount of royalty to be paid for these magazines?
 A ₹ 19,450 B ₹ 21,200 C ₹ 22950 D ₹26,150
Question 7 Explanation:
Printing Cost=30,600/- that means 20% according to Diagram
Royalty cost=x
∴20 % →30,600
15% →x
Do Cross Multiplication
(20/100) * x=30,600 * (15/100)
x=22,950/-
 Question 8
The following pie-chart shows the percentage distribution of the expenditure incurred in publishing a magazine. Study the pie-chart and answer the questions based on it. Royalty on the magazine is less than the printing cost by:
 A 5% B 33 (1 / 5 ) C 20% D 25%
Question 8 Explanation:
According to Diagram
Printing Cost = 20%
Royalty Cost = 15%
How much percentage royalty cost is less than printing cost
((20-15) / 20 ) * 100 = 50/2 = 25%
 Question 9
The table given here shows production of five types of cars by a company in the year 2010 to 2015. Study the table and answer the questions. In which year the total production of cars of types P and Q together was equal to the total production of cars of types R and S together?
 A 2011 B 2012 C 2015 D None of the above
Question 9 Explanation:
In this question we have to verify from options, so we can easily find which one is same
P+Q in 2011 -----> 20+10 = 30
R+S in 2011 ------> 17+6 = 23
option A is wrong
P+Q in 2012 ----> 16+14 = 30
R+S in 2012 ----> 16+10 = 26
option B is wrong
P+Q in 2015 ---> 6+14 = 20
R+S in 2015 ---> 31+8 = 39
option C is wrong
So finally option D is correct.
 Question 10
The table given here shows production of five types of cars by a company in the year 2010 to 2015. Study the table and answer the questions. In which year the production of cars of all types taken together was approximately equal to average during the period?
 A 2010 B 2012 C 2014 D 2015
Question 10 Explanation:
Take the sum of all cars by years = (88+78+90+87+133) = 476
Average during the period = 476/6 = 79.33.
Year 2014 is approximately equal
option C correct.
 Question 11
The table given here shows production of five types of cars by a company in the year 2010 to 2015. Study the table and answer the questions. The production of which type of cars was 25% of the total production of all types of cars during 2014?
 A S B R C Q D P
Question 11 Explanation:
From that table in 2014 total production of cars was 80.
So,
100% -----> 80
25% ------> x
(25 * 80) / 100 = 20.
From that table 20 cars are from Type S .
 Question 12
1.P,Q,R,S,T and U six members of a family each of them engaged in a different profession Doctor, Lawyer, Teacher, Engineer, Nurse and Manager.
2.Each of them remains at home on a different day of the week from Monday to Saturday.
3.The Lawyer in the family remain at home on Thursday.
4.R remains at home on Tuesday.
5.P, a Doctor, does not remain at home either on Saturday or on Wednesday.
6.S is neither the doctor nor the Teacher and remains at home on Friday,
7.Q is the Engineer and T is the Manager.

Which of the following combinations is correct?
 A Lawyer-Tuesday B Nurse-Friday C Manager-Friday D Engineer-Thursday
Question 12 Explanation: Question 13
1.P,Q,R,S,T and U six members of a family each of them engaged in a different profession Doctor, Lawyer, Teacher, Engineer, Nurse and Manager.
2.Each of them remains at home on a different day of the week from Monday to Saturday.
3.The Lawyer in the family remain at home on Thursday.
4.R remains at home on Tuesday.
5.P, a Doctor, does not remain at home either on Saturday or on Wednesday.
6.S is neither the doctor nor the Teacher and remains at home on Friday,
7.Q is the Engineer and T is the Manager.

Which of the following combinations is not correct?
 A R-Teacher B Q-Engineer C T-Manager D S-Lawyer
Question 13 Explanation: Question 14
1.P,Q,R,S,T and U six members of a family each of them engaged in a different profession Doctor, Lawyer, Teacher, Engineer, Nurse and Manager.
2.Each of them remains at home on a different day of the week from Monday to Saturday.
3.The Lawyer in the family remain at home on Thursday.
4.R remains at home on Tuesday.
5.P, a Doctor, does not remain at home either on Saturday or on Wednesday.
6.S is neither the doctor nor the Teacher and remains at home on Friday,
7.Q is the Engineer and T is the Manager.

Who is the Nurse ?
 A S B R C U D Data inadequate
Question 14 Explanation: Question 15
Three of the words will be in the same classification the remaining one will not be. Your answer will be the one word that does NOT belong in the same classification as the others.

Which word does NOT belong to the others ?
 A Tape B Twine C Cord D Yarn
Question 15 Explanation:
Twine, Cord, Yarn all are similar words.
Tape is Different one.
There are 15 questions to complete.

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