ISRO CS previous year solved papers

Last Updated : 13 Jun, 2024

The page contains solutions of previous year ISRO CS papers with explanations, topic wise Quizzes, notes/tutorials and important links for preparation.

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ISRO | ISRO CS 2018 | Question 58

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Previous Solved CS Papers Year wise - GATE / UGC / ISRO

Here, we have listed all these important solved year wise papers. We have tried to solve these paper with best and errorless explanations. We have also provided alternative explanation or more than one methods to solve a specific question whenever possible. You can practice them online with prior knowledge to solve and learn them by understanding i

ISRO | ISRO CS 2020 | Question 51

If A = {x, y, z} and B = {u, v, w, x}, and the universe is {s, t, u, v, w, x, y, z}. Then (A U B') ∩ (A ∩ B) is equal to (A) {u, v, w, x} (B) { } (C) {u, v, w, x, y, z} (D) {u, v, w} (E) None of these Answer: (E) Explanation: If A = {x, y, z} and B = {u, v, w, x}, and the universe is {s, t, u, v, w, x, y, z}. So, B' = {s, t, y, z} And, = (A U B') ∩

ISRO | ISRO CS 2020 | Question 53

What is the in-order successor of 15 in the given binary search tree ? (A) 18 (B) 6 (C) 17 (D) 2 Answer: (C) Explanation: Inorder Successor of a node in binary tree is the next node in Inorder traversal of the Binary Tree. Inorder of above given tree, 2 3 4 6 7 9 13 15 17 18 20 Therefore, 17 is the inorder successor of 15. Option (C) is correct. Qu

ISRO | ISRO CS 2020 | Question 54

The minimum height of an AVL tree with n nodes is (A) Ceil (log2 (n + 1)) (B) 1.44 log2 n (C) Floor (log2 (n + 1)) (D) 1.64 log2 n Answer: (C) Explanation: Given n nodes in AVL tree: Minimum: ceil(log2(n+1)) Maximum: floor(1.44*log2(n+2) - 0.328) Option (C) is correct.Quiz of this Question

ISRO | ISRO CS 2016 | Question 61

A company needs to develop digital signal processing software for one of its newest inventions. The software is expected to have 20000 lines of code. The company needs to determine the effort in person-months needed to develop this software using the basic COCOMO model. The multiplicative factor for this model is given as 2.2 for the software devel

ISRO | ISRO CS 2014 | Question 27

How many different BCD numbers can be stored in 12 switches? (Assume two position or on-off switches) (A) 212 (B) 212-1 (C) 1012 (D) 103 Answer: (D) Explanation: In Binary Coded Decimal (BCD) encoding scheme each of the decimal numbers(0-9) is represented by its equivalent binary pattern (which is generally of 4-bits). A switch can store 1 bit, eit

ISRO | ISRO CS 2015 | Question 26

Which grammar rules violate the requirement of the operator grammar? A, B, C are variables and a, b, c are terminals 1) A → BC 2) A → CcBb 3) A → BaC 4) A → ε (A) 1 only (B) 1 and 2 only (C) 1 and 3 only (D) 1 and 4 only Answer: (D) Explanation: In operator grammar production rules which have two adjacent non-terminals on right hand side are not al

ISRO | ISRO CS 2015 | Question 17

Consider the following log sequence of two transactions on a bank account, with initial balance 12000, that transfer 2000 to a mortgage payment and then apply a 5% interest. 1. T1 start 2. T1 B old=1200 new=10000 3. T1 M old=0 new=2000 4. T1 commit 5. T2 start 6. T2 B old=10000 new=10500 7. T2 commit Suppose the database system crashes just before

ISRO | ISRO CS 2015 | Question 18

Given a block can hold either 3 records or 10 key pointers. A database contains n records, then how many blocks do we need to hold the data file and the dense index (A) 13n/30 (B) n/3 (C) n/10 (D) n/30 Answer: (A) Explanation: Number of blocks needed to store data file with n records = n/3 Number of blocks needed to store dense file index = n/10 To

ISRO | ISRO CS 2015 | Question 19

The maximum length of an attribute of type text is (A) 127 (B) 255 (C) 256 (D) It is variable Answer: (D) Explanation: Answer: (D) Explanation: The maximum length of an attribute of type text is a variable Quiz of this Question Please comment below if you find anything wrong in the above post Quiz of this Question Please comment below if you find a

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