Previous year questions · RSSB Computer Instructor

RSSB Computer Instructor Computer Science — Previous Year Questions

Q: How many RSSB Computer Instructor Computer Science previous year questions are available?

170 Computer Science questions from past RSSB Computer Instructor papers are available on AajExam, split into 17 practice sets. New questions are added as fresh papers are released.

Q: Are the answers and explanations free?

Yes. Every question on this page shows its correct answer and explanation free of charge, and you do not need an account to read them. A free account only adds attempt tracking and performance analytics.

Q: Do RSSB Computer Instructor repeat questions from previous years?

Exact repeats do occur, but the more reliable pattern is conceptual: the same Computer Science sub-topics reappear cycle after cycle with reworded questions. That is why working through past questions raises your score more reliably than reading theory alone.

Q: How should I use these questions in my RSSB Computer Instructor preparation?

Attempt a set of ten cold, review every wrong and guessed question with its explanation, then drill the weak sub-topic on its topic page before moving on. Revisit the same set after a few days — your second-attempt accuracy is the honest measure of whether the concept stuck.

170 Computer Science questions asked in past RSSB Computer Instructor papers, split into 17 timed practice sets — every question with its answer and explanation.

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About RSSB Computer Instructor Computer Science previous year questions

This page collects every Computer Science question that has appeared in past RSSB Computer Instructor papers on AajExam — 170 questions in total, organised into 17 short, timed practice sets. Each question is shown with its four options, the correct answer, and an explanation of the reasoning, so you can use the page either as a self-test or as a revision reference. Why previous year questions are the highest-value Computer Science preparation you can do for RSSB Computer Instructor: recruitment boards reuse a stable pool of concepts across cycles. The wording changes, the underlying idea rarely does. Working through a few hundred genuine past Computer Science questions teaches you which sub-topics the paper actually rewards, how the examiner likes to frame distractors, and roughly how long each question type should take — none of which a syllabus document can tell you. How to use this page: attempt questions in blocks of ten without looking at the answers, then review every question you got wrong or guessed. Read the explanation for the concept, not just the answer letter. When a concept keeps catching you out, open the related topic page linked below and drill that single area before returning here. Repeat across the full bank, and track how your accuracy on the second pass compares with your first — a 15-20% improvement is normal and is the clearest sign your preparation is working. What is in this bank: the questions are transcribed from actual RSSB Computer Instructor question papers, kept in the original order and wording, with solutions written by subject specialists. Sets are free to attempt, work on mobile, and need no login to read. If you would rather practise a complete paper end to end under exam conditions, the full RSSB Computer Instructor previous-year papers are linked below as well.

Computer Science PYQs asked in RSSB Computer Instructor

A sample of 30 questions from the full bank of 170. Try each one before opening the solution — the remaining questions are in the timed practice sets below.

Q1.. Command to open Snipping tool menu to take a screenshot of only a section of your screen - ह
- A.Window key-+ Ctrl + $
- B.Window key + Shift + S :
- C.Window key + Alt + X a
- D.Ctrl+ Shift+K “ command है - ५;
Show answer
Answer: B. Window key + Shift + S :
Q2.Findx=? .... : Tf (356)s = (016 8 -
- A.EE |
- B.EA ः 5
- C.7E -
- D.AS © 2 यदि (356) = (x)i6
Show answer
Answer: A. EE |
Q3.Which statement is/are true about Exception handling? > हि + 1. There can be try block without catch block but vice versa is not possible. ii. There is.no limit on the number of catch: block corresponding to a try block. - iii. The object must be created of a specific "Class of which the error has occurred i | otherwise runtime érror wil] occur. . iv. To execute a code with each and every run , of program, the code is written in finally block. ; |
- A.i and ii, iv -
- B.Only ii -
- C.Only iii
- D.ii andiv Only © age 14 01 16... ‘ ;
Show answer
Answer: A. i and ii, iv -
Q4.Which phase is not included Virus Life Cycle?
- A.Dormant
- B.Execution
- C.Start
- D.Trigerring
Show answer
Answer: C. Start
Q5.Which of the following statement is/are -incorrect with respect to abstract classes? B a ‘i, Subclasses of an abstract class that do not: ' provide an implementation of an abstract ; . method, are also abstract. ii. Constructor and static methods cannot be declared in abstract class. iii. Sometimes we can create objects directly. iv. A.method must always be redefined in a subclass of abstract class. oo
- A.i and ii
- B.ii and iii
- C.ii and iv
- D.i,iiandiv थ ii. Abstract class ¥ constructor और static iv. एक abstract class की subclass ¥ method
Show answer
Answer: B. ii and iii
Q6.In C, what are the various types of real data ; type (floating point data type)?
- A.float, long double |
- B.long double, short int
- C.float, double, long double
- D.short int, double long int, float ge
Show answer
Answer: C. float, double, long double
Q7.What is the result after execution of the following code if ‘a’ is 10, ‘b’ is 5 and ‘c’ is 10? : if ((a>b)&&(a<=c)) . a=at+1; ee . else ; c=c+1; :
- A.a=10,c=10
- B.a=11,c=10 :
- C.a=10,c=11 ()a=I11,c=11 if ((a>b)&&(a<=c)) कर . a=atl; else. दि ‘ c=c+1;
- D.a=10,c=10 (B)'a=11,c= 10 : ()a=10,c=11 ()a=1l,c=11
Show answer
Answer: B. a=11,c=10 :
Q8.Which of the following declarations is incorrect ~ in python language? ;
- A.xyzp = 5,000,000 ; a
- B.xyzp = 5000 6000 7000 8000
- C.x, y, ८, p = 5000, 6000, 7000, 8000 ,
- D.x_y_z_p = 5,000,000 .... (8) xyzp = 5,000,000
Show answer
Answer: B. xyzp = 5000 6000 7000 8000
Q9.Choose the correct statement with respect to interfaces — (i) Java does not support “multiple inheritance” however, it can be achieved by using interfaces. : a (ii) Unless the class that implements the | interface is abstract, all the methods of the. af | interface need to: be defined in the class. (iii) To implement multiple interfaces, separate a them with acomma(,). a4 |
- A.Only (i) |
- B.(i) and (ii) re
- C.(ii) and (iii)
- D.(i), (i) and (iii)
Show answer
Answer: D. (i), (i) and (iii)
Q10.Match the following — List - I (i) A method that is used to create an instantiation of a class 2 (ii) A signal that something has happened to stop normal execution of a program (iii) A graphical image that is usually stored in a file ः ं (iv) Converting one type of value to another . type is called List - I
- A.Bitmap : a
- B.Type casting
- C.Exception
- D.Constructor
Show answer
Answer: D. Constructor
Q11.The Knapsack problem where the objective be function is to minimize the profit is - :
- A.Greedy
- B.Dynamic 0/1 a
- C.Back tracking
- D.Branch & Bound 0/1 , 5 4
Show answer
Answer: D. Branch & Bound 0/1 , 5 4
Q12.What will be the output of the program? Public class test 2 { क दि Public static void main (String [ | args) { | StringBuffer.S1 = newStringBuffer (“Complete”); * Sl.setCharAt(1, ‘i’); S1.setCharAt(7, ‘d’); System.out.printin (S1); bh | । |
- A.Complete .
- B.lomplede (
- C.Cimpletd
- D.Compiled
Show answer
Answer: C. Cimpletd
Q13.An advantage of chained hash table (external ‘ hashing) over the open addressing scheme is - :
- A.Worst case complexity of search operations ‘ is less "
- B.Space used is less. .....
- C.Deletion is easier I
- D.None of the above { 4 | 1198 - के Page
Show answer
Answer: C. Deletion is easier I
Q14.Which one of the following is an application of . queue data structure?
- A.When a resource is shared among multiple consumers
- B.When data is transferred asynchronously between two processes
- C.Load balancing dor Ei |
- D.All of the above
Show answer
Answer: D. All of the above
Q15.In context of network security match the following— ‘ Column - I (P) Fabrication (Q) Modification (R) Interception ः न Column-II 1. Message confidentiality 2. Message integrity 3, Authentication
- A.P-1, Q-3, R-2 *
- B.P-2, 0-1, R-3
- C.P-3, 0-1, R-2
- D.?-3, 0-2, R-1 Column - I Column - II :
Show answer
Answer: D. ?-3, 0-2, R-1 Column - I Column - II :
Q16.CPU scheduling is the basis of -
- A.Multiprograming operating system
- B.Large memory sized:systems
- C.Multiprocessor systems
- D.None of the mentioned
Show answer
Answer: A. Multiprograming operating system
Q17.Network devices ..................... ANG ............. ALE | used at physical layer. [
- A.Gateway, Bridge
- B.Router, Repeaier .
- C.Hub, Switch |
- D.Repeater, Hub ' 1198 - के Page
Show answer
Answer: D. Repeater, Hub ' 1198 - के Page
Q18.Which of the following events is/are exposed by the Data table object? _
- A.RowChanged :
- B.ColumnChanged
- C.RowChanging
- D.All of the above ४ (A) RowChanged (8) ColumnChanged ie (C) RowChanging
Show answer
Answer: D. All of the above ४ (A) RowChanged (8) ColumnChanged ie (C) RowChanging
Q19.85 complement of (7650) is - _ (8) 0230 (B) 0130 ; (C) 1230 : (D) 3450
- A.0230°
- B.0130.
- C.1230
- D.3450
Show answer
Answer: B. 0130.
Q20.Choose the correct statements — : (i) Simplex reflex agents take decisions on the basis of the current percepts and past history. (ii) When uniqueness in the agents current state completely determines the next state of the agent, the environment is said to be deterministic. — (iii) The environment is semi-dynamic if the environment itself does not change with the _ passage of time but the agent’s performance score does. »
- A.(i) and (iii)
- B.(i) and (ii)
- C.(ii) and (iii) "
- D.All of the above (A) (i) और (iii) - (8) (i) और (ii)
Show answer
Answer: C. (ii) and (iii) "
Q21.Software Quality Assurance (SQA) encompasses - a,
- A.Verification
- B.Validation —
- C.Both (A) and(B)
- D.None of the above "नल : | . नहीं
Show answer
Answer: C. Both (A) and(B)
Q22.Which feature of OOP boost the code | reusability? ः द |
- A.Encapsulation
- B.. Polymarphism
- C.Inheritance
- D.Abstraction
Show answer
Answer: C. Inheritance
Q23.DHTML is not a standatdized language for which company?
- A.Microsoft .
- B.Oracle |
- C.W3 schools
- D.Facebook है?
Show answer
Answer: B. Oracle |
Q24.If we implement heap as maximum heap, _ adding a new node of value 15 to the left most node of right subtree, what value will be at leaf | nodes of the right subtree of the heap? ¢ _
- A.15 and 1
- B.25 and 1
- C.3 and 1
- D.2 and 3 (A) 15 और 1 (8) 25 और 1
Show answer
Answer: A. 15 and 1
Q25.Which of the following is not a symmetric key cryptography algorithm?
- A.RC4
- B.Blowfish »
- C.Diffie-Hellman
- D.DES
Show answer
Answer: C. Diffie-Hellman
Q26.Which method is used for both error detection and error correction method in computer networking?
- A.Single Parity Check
- B.Hamming Distance
- C.Cyclic Redundancy Check (CRC)
- D.Checksum - हैं? ;
Show answer
Answer: B. Hamming Distance
Q27.Select the false statement about CDMA technology — 1. CDMA technology optimizes the use of available bandwidth as it transmits over the | entire frequency range. v Il. Each user ina CDMA system uses a | different code to modulate their signal. पा. CDMA technology offers less security as compared to the GSM technology. IV. A SIM card is always required for the working of a CDMA device.
- A.Only (1)
- B.Only (11)
- C.(1) and (ID)
- D.(II) and (IV) | करें - : 1198 - की. Page आर...
Show answer
Answer: D. (II) and (IV) | करें - : 1198 - की. Page आर...
Q28.An entity is represented by set of -
- A.Attibutes
- B.Relationship
- C.Model
- D.None ७5. The correct sequence of HTML tags for starting ©) — .a webpage is - a —
Show answer
Answer: A. Attibutes
Q29.The correct sequence of HTML tags for starting a webpage is -
- A.Head, Title, HTML, Body
- B.HTML, Body, Title, Head
- C.Head, Title, HTML, Body
- D.HTML, Head, Title, Body
Show answer
Answer: D. HTML, Head, Title, Body
Q30.Which of the following document contains the user system requirement?
- A.SRD
- B.DDD =
- C.SDD
- D.SRS ८६? (8) SRD _ (B) DDD (C) SDD (D) SRS
Show answer
Answer: D. SRS ८६? (8) SRD _ (B) DDD (C) SDD (D) SRS

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RSSB Computer Instructor syllabus & pattern Full RSSB Computer Instructor question papers All Computer Science practice

Frequently Asked Questions

How many RSSB Computer Instructor Computer Science previous year questions are available?

170 Computer Science questions from past RSSB Computer Instructor papers are available on AajExam, split into 17 practice sets. New questions are added as fresh papers are released.

Are the answers and explanations free?

Yes. Every question on this page shows its correct answer and explanation free of charge, and you do not need an account to read them. A free account only adds attempt tracking and performance analytics.

Do RSSB Computer Instructor repeat questions from previous years?

Exact repeats do occur, but the more reliable pattern is conceptual: the same Computer Science sub-topics reappear cycle after cycle with reworded questions. That is why working through past questions raises your score more reliably than reading theory alone.

How should I use these questions in my RSSB Computer Instructor preparation?

Attempt a set of ten cold, review every wrong and guessed question with its explanation, then drill the weak sub-topic on its topic page before moving on. Revisit the same set after a few days — your second-attempt accuracy is the honest measure of whether the concept stuck.

RSSB Computer Instructor Computer Science practice sets

Each set is a timed 10-question drill drawn from the same question bank.

About RSSB Computer Instructor Computer Science previous year questions

Computer Science PYQs asked in RSSB Computer Instructor

Q1.. Command to open Snipping tool menu to take a screenshot of only a section of your screen - ह

Q2.Findx=? .... : Tf (356)s = (016 8 -

Q4.Which phase is not included Virus Life Cycle?

Q6.In C, what are the various types of real data ; type (floating point data type)?

Q7.What is the result after execution of the following code if ‘a’ is 10, ‘b’ is 5 and ‘c’ is 10? : if ((a>b)&&(a<=c)) . a=at+1; ee . else ; c=c+1; :

Q8.Which of the following declarations is incorrect ~ in python language? ;

Q11.The Knapsack problem where the objective be function is to minimize the profit is - :

Q12.What will be the output of the program? Public class test 2 { क दि Public static void main (String [ | args) { | StringBuffer.S1 = newStringBuffer (“Complete”); * Sl.setCharAt(1, ‘i’); S1.setCharAt(7, ‘d’); System.out.printin (S1); bh | । |

Q13.An advantage of chained hash table (external ‘ hashing) over the open addressing scheme is - :

Q14.Which one of the following is an application of . queue data structure?

Q15.In context of network security match the following— ‘ Column - I (P) Fabrication (Q) Modification (R) Interception ः न Column-II 1. Message confidentiality 2. Message integrity 3, Authentication

Q16.CPU scheduling is the basis of -

Q17.Network devices ..................... ANG ............. ALE | used at physical layer. [

Q18.Which of the following events is/are exposed by the Data table object? _

Q19.85 complement of (7650) is - _ (8) 0230 (B) 0130 ; (C) 1230 : (D) 3450

Q21.Software Quality Assurance (SQA) encompasses - a,

Q22.Which feature of OOP boost the code | reusability? ः द |

Q23.DHTML is not a standatdized language for which company?

Q24.If we implement heap as maximum heap, _ adding a new node of value 15 to the left most node of right subtree, what value will be at leaf | nodes of the right subtree of the heap? ¢ _

Q25.Which of the following is not a symmetric key cryptography algorithm?

Q26.Which method is used for both error detection and error correction method in computer networking?

Q28.An entity is represented by set of -

Q29.The correct sequence of HTML tags for starting a webpage is -

Q30.Which of the following document contains the user system requirement?

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RSSB Computer Instructor Computer Science practice sets

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