What is the primary function of the Reserve Bank of India (RBI)?
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Correct answer: (D) Conducting monetary policy
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BEL PE Computer Science PYQ, 17 Dec 2023 (8:30 AM)
All 125 questions of BEL PE Computer Science PYQ, 17 Dec 2023 (8:30 AM) with the correct answer from the official answer key and a solution. Read them free on UTpaper, or attempt the paper as a timed online test.
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General Aptitude 12 questions
Which language is recognized as a Classical Language by the Government of India?
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Correct answer: (D) Sanskrit
Which of the following is a Constitutional Body in India?
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Correct answer: (A) Election Commission of India (ECI)
Which of the following is a key component of India's infrastructure development?
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Correct answer: (D) High-speed railways
Which river is known as the "Dakshina Ganga" in India?
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Correct answer: (A) Godavari
Which article of the Indian Constitution deals with Fundamental Duties?
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Correct answer: (B) Article 51A
Which sports award is considered the highest sporting honour in India?
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Correct answer: (B) Major Dhyan Chand Khel Ratna
What is the primary goal of sustainable development?
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Correct answer: (A) Preservation of natural resources for future generations
Which of the following is a characteristic feature of the Animal Kingdom?
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Correct answer: (D) Heterotrophic mode of nutrition
What is the purpose of pasteurization in food processing?
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Correct answer: (D) To destroy pathogenic microorganisms present in the food
Which socio-religious reform movement in modern history aimed at eradicating social evils such as untouchability, caste discrimination, and promoting education and women's rights?
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Correct answer: (B) The Brahmo Samaj
Which of the following Ruler was responsible for erecting the iron pillar of Delhi?
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Correct answer: (B) Chandragupta II
Reasoning 13 questions
Which of the following numbers will replace the question mark (?) in the given series?
14, 13, 15, 12, 16, 11, ?
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Correct answer: (D) 17
Seven friends Alice, Bob, Carol, David, Eve, Frank, and Grace are sitting around a circular table facing the centre. Alice is sitting to the immediate right of Bob. Bob and Carol are neighbours. Frank is sitting exactly between David and Eve. Grace is not sitting next to Carol or Eve. Who is sitting between Alice and David?
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Correct answer: (B) Grace
Which of the following letter will replace the question mark (?) in the given series?
R, U, X, A, D, ?
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Correct answer: (B) G
There are 133 boxes kept one above the other. What will be the position of the box from the bottom whose position from the top is 27th?
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Correct answer: (C) 107
In a certain code language, if RESCUE is coded as 'EUCRES' and HANDLE is coded as 'ELDHAN', then what will DANGER be coded as?
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Correct answer: (A) REGDAN
If B denotes 'addition', C denotes 'division', and D denotes 'subtraction', then what will be the value of the following equation?
12 D 4 C 2 B 3 = ?
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Correct answer: (B) 13
Select the option that is related to the third number in the same way as the second number is related to the first number.
57 : 228 :: 79 : ?
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Correct answer: (A) 316
Four letter-clusters have been given, out of which three are alike in some manner and one is different. Select the odd letter-cluster.
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Correct answer: (B) VWX
Which of the following numbers will replace the question mark (?) in the given series?
1076, ?, 688, 494, 300, 106
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Correct answer: (D) 882
Three Statements are given followed by two conclusions numbered I and II. Assuming the statements to be true, even if they seem to be at variance with commonly known facts, decide which of the conclusions logically follow(s) from the statements.
Statement I: All fruits are vegetables.
Statement II: Some vegetables are green.
Statement III: Some green things are ugly.
Conclusion I: Some vegetables are fruits.
Conclusion II: Some green things are not ugly.
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Correct answer: (B) Only conclusion I follows
Select the option that is related to the fifth word in the same way as the fourth word is related to the third word, and the second word is related to the first word.
KANGAROO : JOEY :: BEAR : ?
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Correct answer: (B) Cub
Which two signs should be interchanged to make the given equation correct?
16 = 4 × 5 ÷ 2 - 8 + 18
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Correct answer: (A) = and +
Rohan says, "Ajay's wife is the sister of my father's only son." How is Ajay related to Rohan?
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Correct answer: (B) Sister's husband
Computer Science 100 questions
________ begins at the vortex of the spiral and concentrate on each component of the software as implemented in source code.
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Correct answer: (C) Unit testing
In context of Relational Algebra of Database Management System, SELECT operation is used to select a subset of the tuples from a relation that satisfy a __________.
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Correct answer: (B) Selection Criteria
Choose the CORRECT sequence of steps involved in machine learning cycle.
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Correct answer: (B) Data identification → Data preparation → Selection of machine learning algorithm → Train model → Evaluate the model → Deploy the model
Which of the following pair of Application layer protocol of OSI model and its services is CORRECT?
I. X.400 – Directory
II. X.500 – Electronic Mail protocol
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Correct answer: (D) Neither I nor II
Given an array X = (22, 33, 55, 88, 96) and key = 88
How many iterations are required to find the key using binary search?
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Correct answer: (D) 2
What is the approximate value of 149.832 ÷ 25.0138 + 7.10 × 2.008?
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Correct answer: (A) 20
Match the language with its machine format.
Language: I. Unrestricted language; II. Context sensitive language; III. Context free language; IV. Regular expression
Machine: 1. Finite automata; 2. Push down automata; 3. Linear bounded automata; 4. Turing machine
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Correct answer: (D) I – 4; II – 3; III – 2; IV – 1
Which of the following is the mostly used activation function in the area of deep learning?
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Correct answer: (D) Rectified linear unit function
Name the phase of the unified process model where customer communication and planning take place.
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Correct answer: (A) Inception phase
Which of the following is NOT a process state?
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Correct answer: (A) Start
What is the value of (21/46) ÷ (1/6) of (23/42) + (96/576) × (24/3) − ((88/56) × (7/9) ÷ (5/36))?
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Correct answer: (A) 9/2
Three unbiased dices are thrown, what is the probability of getting a sum of at least 11?
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Correct answer: (D) 11/36
Mixture of milk and water in three bottles of equal capacity is in the ratio 3 : 4, 1 : 2 and 9 : 5 respectively. These three bottles are emptied into a large bottle. What will be the ratio of milk and water respectively in the large bottle?
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Correct answer: (A) 59 : 67
Which view of the quality argues that quality is something you immediately recognize but cannot explicitly define according to David Galvin of the Harvard Business school?
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Correct answer: (A) Transcendental view
Which of the following formula is used to calculate the sensitivity of a model?
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Correct answer: (D) TP / (TP + FN)
Which of the following machine learning algorithm does NOT use clustering?
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Correct answer: (A) Linear Discriminant Analysis
Which of the following array representation is CORRECT for the max heap of the following data elements?
20, 30, 70, 10, 5, 50, 80
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Correct answer: (A) 80, 20, 70, 10, 5, 30, 50
Which of the following is NOT the action performed by a shift – reduce parser?
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Correct answer: (B) Debase
Which of the given option is CORRECT?
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Correct answer: (C) (17/27) < (15/22) < (13/17)
Which of the following is the single path shortest path algorithm?
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Correct answer: (D) Dijkstra's algorithm
In context of Database, which of the following is the CORRECT order for creating a database?
A → Defining its structure (scheme)
B → Entering data into the database
C → Designing forms (custom screens) for displaying and entering data
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Correct answer: (B) A → C → B
Parser is categorized into which type of context-free grammar?
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Correct answer: (A) Two
Consider the following queue of character, implemented using array of 7 memory,
Front = 3 Rear = 4 Queue: –, –, A, B, __, __, __, where '–' denotes empty memory cell. What is the value of front and rear after the following operation?
Enqueue C, D
Dequeue
Enqueue E, F
Dequeue
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Correct answer: (A) Front = 5 Rear = 1
10 + (1010)* [∧ + (1010)*] is equivalent to ______, where ∧ represents null.
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Correct answer: (A) 10 + (1010)*
In the push down automata, transitional function δ is in the form ______.
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Correct answer: (D) Q × (Σ ∪ {λ}) × Γ → (Q, Γ*)
Convert (1111)₂ into decimal equivalents.
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Correct answer: (D) 15
In any computer network, a communication protocol normally perform, which of the following functions for efficient and error free transmission of data?
I. Data Routing
II. Procedure and order of Transmission
III. Data security
IV. Data formatting
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Correct answer: (D) I, II, III and IV
Which of the following statement is CORRECT?
I. An input device is an electromechanical device that accepts data from the outside world and translates it into a form a computer can interpret.
II. An output device is an electromechanical device that accepts data from a computer and translates them into a form suitable for use by outside world.
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Correct answer: (B) Both I and II
Which of the following change brought about by the iterative waterfall model to the classical waterfall model?
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Correct answer: (D) Addition of feedback paths
Which derivation is also known as canonical derivations?
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Correct answer: (D) Right most derivation
Sort the following list using radix sort:
429, 557, 757, 939, 536, 820, 455
What is the output of the algorithm after the first pass?
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Correct answer: (B) 820, 455, 536, 557, 757, 429, 939
Match the following network diagram with the correct topology.
Network diagram: I. Four computers, each connected directly to one central host; II. Computers connected to one another in a closed loop; III. Computers attached to a single communication line.
Topology: 1. Ring network; 2. Bus network; 3. Star network
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Correct answer: (C) I – 3; II – 1; III – 2
What is the decimal conversion of (630.4)₈?
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Correct answer: (D) 408.5
Full-Subtractor has ______ inputs and ______ outputs.
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Correct answer: (D) 3; 2
K-Nearest Neighbours algorithm is a ________ classification algorithm that classifies new data point based on the nearest data point.
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Correct answer: (C) Supervised
Which of the following is NOT the part of the organization of C programming language Activation Record?
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Correct answer: (D) Formal parameters
The following C function is an example of what type of recursion?
int f(int n)
{
if(n==1)
return 1;
else if(n==0)
return 0;
else
return(f(n-1)+f(n-2));
}
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Correct answer: (B) Binary
Which of the following statement is CORRECT about software testing?
I. White box testing is performed early in the testing phase.
II. Black box testing tends to be applied during later stages of testing.
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Correct answer: (B) Both I and II
Which of the following identities of regular expression is NOT correct?
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Correct answer: (D) φR = R
Match the component of software architecture with its roles.
Component: I. Control component; II. Problem domain component; III. Infrastructure component
Role: 1. That implements a complete or partial function i.e. required by the customer; 2. Responsible for function that support the processing required in the problem domain; 3. Co-ordinate the invocation of all other problem domain components
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Correct answer: (C) I – 3; II – 1; III – 2
A process is ________, if it cannot affect or be affected by the other processes executing in the system.
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Correct answer: (A) independent
How many steps are required to construct a string abbbb from the grammar given by using right most derivation?
S → aAB
A → bBb
B → A | ε
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Correct answer: (A) 5
Consider a hash table with 10 slots. What is the sequence of the following elements in a hash table if hash function is k mod 10 and the collision is resolved using linear probing?
44, 26, 12, 93, 80, 57, 56, 23, 46, 36
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Correct answer: (D) 80, 36, 12, 93, 44, 23, 26, 57, 56, 46
How many distinct binary trees are constructed using 5 nodes?
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Correct answer: (A) 42
Which of the following statement is CORRECT regarding FLIP-FLOPS?
I. A FLIP-FLOP circuit can maintain a binary state indefinitely (as long as power is applied) until directed by an input signal to switch states.
II. The major differences among various types of FLIP-FLOPS are in the number of inputs they possess and in the manner in which the inputs affect the binary state.
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Correct answer: (A) Both I and II
Identify the category of the multithreading which allow a program to continue running even if part of it is blocked or is performing a lengthy operation.
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Correct answer: (A) Responsiveness
Which of the following is the type of parallel processor system as per Flynn's taxonomy?
I. Single instruction, single data (SISD) stream
II. Single instruction, multiple data (SIMD) stream
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Correct answer: (D) Both I and II
In First-Come-First-Served CPU scheduling algorithm when all the other processes wait for one big process to get off the CPU is known as ________.
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Correct answer: (C) Convoy effect
In context of computer networks, based on data transmission speed which of the following are the bases categories of communication channels (paths)?
I. Narrow band
II. Voice band
III. Broad band
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Correct answer: (D) I, II and III
Consider 2 dimensional array A[10][15]. Assume that each element takes one memory location and base address of array A is 100. Consider the lower bound of row and column as 0. What is the address of A[i][j] if array A is stored in row major form?
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Correct answer: (C) 15i + j + 100
A ______ defines an action the database should take when some database-related event occurs that causes a change in the content of a table in a database.
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Correct answer: (C) Trigger
What is the cyclomatic complexity of the given flow graph?
The flow graph has 9 nodes: 1, (2,3), (4,5), 6, 7, 8, 9, 10, 11, and 11 edges: 1 → (2,3); (2,3) → 6; (2,3) → (4,5); 6 → 7; 6 → 8; 7 → 9; 8 → 9; 9 → 10; (4,5) → 10; 10 → 1; 1 → 11.
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Correct answer: (D) 4
Which of the following is the external sorting?
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Correct answer: (D) Merge sort
As per ISO 25010 quality model which of the following is not the characteristics which describe quality in use model?
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Correct answer: (C) Compatibility
Which of the following statement is CORRECT regarding Entropy, which is a measurement of the uncertainty in data?
I. Low entropy indicates that the data labels are quite uniform.
II. High entropy means the labels are in chaos.
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Correct answer: (D) Both I and II
What is the output of the following postfix expression?
5, 6, 2, +, *, 8, 4, /, –
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Correct answer: (A) 38
Match the following algorithms with the data structure it uses.
Algorithm: I. Breadth first search; II. Heap sort; III. Depth first search
Data structure: 1. Stacks; 2. Queue; 3. Arrays
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Correct answer: (C) I – 2; II – 3; III – 1
Which of the following statement is CORRECT regarding Referential Integrity Constraints in Relational Database Management System?
I. Referential Integrity Constraint is a rule that maintains consistency among the rows of two tables (relations).
II. Referential Integrity rule states that if there is a foreign key in one relation, either each foreign key value must match a primary key value in the other table or else the foreign key value must be null.
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Correct answer: (D) Both I and II
Match the following algorithm with its average complexity.
Algorithm: I. Binary search; II. Quick sort; III. Linear search; IV. Selection sort
Average Complexity: 1. O(n²); 2. O(log n); 3. O(n log n); 4. O(n)
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Correct answer: (A) I – 2; II – 3; III – 4; IV – 1
In context of OSI model of computer networks ________ layer provides services that directly support end users of networks and is a collection of miscellaneous protocols for various commonly used applications such as electronic mail, file transfer etc.
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Correct answer: (C) Application
What is the least number which when divided by 12, 16, 18 and 30 leaves a remainder of 4 in each case but is completely divisible by 7?
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Correct answer: (C) 2884
Consider the following confusion matrix.
Actual Positive, Predicted Positive: 100
Actual Positive, Predicted Negative: 50
Actual Negative, Predicted Positive: 150
Actual Negative, Predicted Negative: 9700
What is the value of False Negative in this confusion matrix?
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Correct answer: (A) 50
Match the machine learning technique with its way of working.
Machine learning type: I. Supervised learning; II. Unsupervised learning; III. Reinforcement
Methods: 1. Utilizes data that is not labelled and attempts to find patterns by clustering similar objects together; 2. Work on the principle of reward and punishment; 3. Utilizes a labelled dataset
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Correct answer: (C) I – 3; II – 1; III – 2
A merchant allows a discount of 10 percent on marked price. If he wants to earn a profit of 10 percent, then marked price will be how much percentage more than the cost price?
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Correct answer: (A) 22.22 percent
Which of the following is NOT the problems of synchronization?
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Correct answer: (B) The Knapsack problem
If w : x : y = 3 : 5 : 2 and y : z = 2 : 5, then what is the value of w : x : y : z?
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Correct answer: (D) 3 : 5 : 2 : 5
Match the following type of software maintenance to the situation where it is carried out.
Maintenance: I. Corrective; II. Perfective; III. Adaptive
Situation: 1. Carried out to improve the performance of the system or to enhance the functionalities of the system; 2. Usually required for porting the software to work in new environment; 3. Carried out to correct errors that were not discovered during the product development phase
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Correct answer: (C) I – 3; II – 1; III – 2
The time dispatcher takes for the dispatcher to stop one process and start another running is known as ______.
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Correct answer: (B) dispatch latency
What is the total number of swaps performed to sort the following list of elements 18, 32, 17, 19, 41, 15, 23 in an ascending order, using bubble sort?
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Correct answer: (A) 10
Which of the following is the CORRECT definition of O-notation?
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Correct answer: (A) O(g(n)) = {f(n): there exist positive constants c and n₀ such that 0 ≤ f(n) ≤ c·g(n) for all n ≥ n₀}
In the context of Relational Algebra of Database Management System, which of the following is the symbol of the JOIN operation?
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Correct answer: (A) ⋈ (bow-tie)
Any address generated by the CPU is commonly referred to as a ______ where an address seen by the memory unit i.e. the one loaded into the memory address register is known as ______.
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Correct answer: (B) logical address; physical address
What is the decimal conversion of (1010.011)₂?
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Correct answer: (B) 10.375
In context of data normalization in database management system, relation is in Boyce-Codd Normal Form if and only if every determinant is a ______.
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Correct answer: (D) Candidate key
Which of the following pair is CORRECT?
I. Associative law : (x*y)*z = x*(y*z)
II. Distributive law : x*(y+z) = (x*y)+(x*z)
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Correct answer: (B) Both I and II
Which of the following is part of the hierarchical storage system?
I. Cache memory
II. Near-line mass storage devices
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Correct answer: (B) Both I and II
Which of the following statement is CORRECT with reference to syntax-directed Translation Schemes?
I. Synthesized translation defines the value of the translation of the nonterminal on the left side of the production as a function of the translations of the nonterminal on the right side.
II. Translation of a non-terminal on the right side of the production is defined in terms of a translation of the non-terminal on left. Such translation is called inherited translation.
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Correct answer: (D) Both I and II
Which of the following pair is CORRECT?
I. Half adder - A combinational circuit that performs the addition of two bits
II. Full adder - A combinational circuit that performs the addition of three bits
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Correct answer: (B) Both I and II
Which of the following is NOT part of the mechanical diagram of the Turing machine?
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Correct answer: (A) Queue
Which of the following is the CORRECT sequence of the phases of a compiler?
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Correct answer: (D) Lexical analysis, syntax analysis, intermediate code generation, code optimization, code generation
Which of the following is NOT the necessary condition for the deadlock?
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Correct answer: (B) Preemption
A ______ is a combinational circuit that selects binary information from one of many input lines and directs it to a single output line.
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Correct answer: (D) digital multiplexer
Which of the following algorithms is an example of the divide and conquer approach?
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Correct answer: (C) Quick sort
Context free grammar is ______ grammar according to the Chomsky hierarchy.
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Correct answer: (A) Type 2
In context of OSI model of computer networks, which of the following is a Transport Layer Protocol?
I. Transport Control Protocol
II. User Datagram Protocol
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Correct answer: (C) Both I and II
Which of the following statement is correct regarding complements?
I. Complements are used in digital computers for simplifying the subtraction operation and for logical manipulations.
II. There are two types of complements for each base-r system: the r's complement and (r-1)'s complement.
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Correct answer: (A) Both I and II
Name the phase of compiler, which separates characters of the source language into groups that logically belong together, these groups are called tokens.
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Correct answer: (A) Lexical analysis
________ acts as a high-speed buffer between CPU and main memory and computer systems use it to store temporarily very active data and instructions during processing.
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Correct answer: (C) Cache memory
In context of computer networks which of the following is a data transmission mode?
I. Simplex
II. Half Simplex
III. Full Duplex
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Correct answer: (C) Only I and III
In context of OSI model of computer networks ________ layer provides means of establishing, maintaining and transmitting a dialogue between two end users.
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Correct answer: (A) Session
Database designers use _________ to define the structure of a database (database scheme) which typically includes definition of all data elements of the database and organization of data elements into records, tables etc.
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Correct answer: (B) Data Definition Language
According to memory hierarchy as one goes down the hierarchy what will NOT occur?
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Correct answer: (A) Increasing frequency of access of the memory by the processor
In context of computer Database, _________ language includes command to enable users to enter and manipulate data in a database.
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Correct answer: (D) Data Manipulation
Match the phases of compiler with its function.
Phases: I. Intermediate code generator; II. Code generation; III. Table management
Function: 1. Keeps track of the names used by the program; 2. Create a stream of simple instructions; 3. Produces the object code
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Correct answer: (A) I – 2; II – 3; III – 1
The given finite automata is equivalent to which of the following regular expression?
States: q0 (start), q1, q4, q5, q2 and qf (final). Transitions: q0 –a→ q1; q1 –b→ qf; q0 –a→ q4; q4 –a→ q2; q0 –b→ q5; q5 –b→ q2; q2 –a,b→ q2 (self loop); q2 –b→ qf.
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Correct answer: (D) ab + (aa + bb) (a + b)* b
What is the output function Z of an XOR gate with inputs X and Y?
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Correct answer: (C) Z = XY' + X'Y
Which of the following is NOT an input device?
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Correct answer: (A) Voice response system
In context to Database management system which of the following is CORRECT regarding query by example?
I. A Query by example form collects all information from a user for composing query language statements for search criterion.
II. Query by example relieves users from remembering query language keywords and using them with correct syntax to form queries.
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Correct answer: (A) Both I and II
What is the minimum cost of the spanning tree of the given graph?
Vertices A to H with weighted edges: A–B 3, A–F 2, B–C 2, B–D 1, C–E 5, C–H 3, D–E 4, E–H 6, E–G 3, F–G 2, G–H 1.
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Correct answer: (B) 14
Dot-matrix printers are character printers that print _________ character at a time.
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Correct answer: (B) one
Practise it as a real test
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