ISRO Computer Science PYQ 2023 – Set A Questions

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ISRO Computer Science PYQ 2023 से संबंधित इस page पर Indian Space Research Organisation (ISRO) की Scientist/Engineer SC previous-year paper, verified dates, candidate guidance और official action links दिए गए हैं। ISRO Computer Science aspirants original post की सभी जरूरी tables, facts और links ध्यान से पढ़ें।

ISRO Computer Science PYQ 2023 check करते समय application/roll number और संबंधित candidate record तैयार रखें। 07 January 2024 exam Set A questions, practice और paper-analysis guidance official notice, candidate login या downloaded document से verify करें। किसी forwarded screenshot को final update न मानें; authority का latest notice और candidate-specific document अंतिम होगा।

ISRO Computer Science PYQ 2023 – Overview

Authority: Indian Space Research Organisation (ISRO)

Current Stage: Scientist/Engineer SC previous-year paper

For Candidates: ISRO Computer Science aspirants

Key Check: 07 January 2024 exam Set A questions, practice और paper-analysis guidance

ISRO Centralised Recruitment Board का Scientist/Engineer ‘SC’ (Computer Science) 2023 Previous Year Question Paper, Set A, 07 January 2024 को आयोजित लिखित परीक्षा का Hindi-English bilingual paper है।
Official pattern के अनुसार परीक्षा 120 मिनट की थी—Part A में 80 Area/Discipline Specific MCQs (+1 और गलत उत्तर पर −1/3) तथा Part B में अधिकतम 15 Aptitude/Ability MCQs, कुल 20 marks और कोई negative marking नहीं थी।
इस package में सभी 95 source-numbered questions, Revised & Final Answer Key के verified answers, आसान Hindi explanations, shared attempt state, whole-paper Final Score, Reset/Retake और Feedback शामिल हैं।
Revised Final Key के अनुसार Q4, Q5, Q12, Q23, Q28 और Q46 evaluation से excluded हैं; Q3, Q47, Q63 और Q79 में final key द्वारा multiple answers स्वीकार किए गए हैं।

95 QUESTIONS PYQ

ISRO Scientist/Engineer ‘SC’ (Computer Science) Previous Year Question Paper 2023
07 January 2024 | Set A | Hindi + English
Total Questions95
Positive MarksPart A +1 | Part B +1/+2
Negative MarksPart A −1/3 | Part B 0
Total Marks100
All Previous Year Questions, Verified Answers, आसान Hindi Explanation and Final Score Analysis
Questions शुरू करें ↓
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Q1.
निम्न graph के लिए minimum spanning distance और corresponding edges की संख्या ज्ञात कीजिए।
Find the minimum spanning distance and the corresponding number of edges for the following graph.
        A
       / 
     1/   7
     B--5--C
     |    |
    4| 3  |6
     |    |
     D--2--E
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Q2.
निम्न algorithms और उनके उपयोग का मिलान कीजिए।
Match the following:
(A) Floyd Warshall — (i) shortest path between two vertices
(B) Dijkstra — (ii) single source shortest path
(C) Kruskal’s — (iii) Minimum spanning tree
(D) Bellman Ford — (iv) solving all pair shortest path
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Q3.
n nodes वाले binary tree का diameter ज्ञात करने की time complexity क्या है?
Time complexity to find the diameter of a binary tree having n nodes is
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Q4.
Binary Search Tree का preorder traversal (10, 5, 1, 7, 40, 50) है। Postorder traversal क्या होगा?
The preorder traversal of a binary search tree is (10, 5, 1, 7, 40, 50). The postorder traversal is
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Q5.
Expression f(z)=8z³+3z+12 को evaluate करने के लिए आवश्यक arithmetic operations की minimum संख्या क्या है?
The minimum number of arithmetic operations required to evaluate the expression f(z)=8z³+3z+12
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Q6.
n vertices के साथ possible simple graphs की maximum संख्या क्या है?
Maximum number of Simple graphs possible with n vertices
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Q7.
नीचे दिए ε-transitions वाले NFA का उद्देश्य lexical token id की strings स्वीकार करना है। digit=[0-9] और letter=[a-z A-Z] है। कौनसा extended regular expression token id के अनुरूप है?
Consider the NFA with epsilon-transitions below, which is meant to accept strings corresponding to a lexical token id. Here digit corresponds to [0-9] and letter corresponds to [a-z A-Z]. Which extended regular expression corresponds to the token id?
start → ○ --letter--> ◎
                    ↙ ε   ↘ ε
             ○ --letter--> ○
                         /
               ε         ε
                ○--digit--○
                    ↘ ε
                 loop back
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Q8.
Arithmetic expressions के लिए grammar G: E → E+E | E×E | id दिया है। String “id + id × id” के parse trees के बारे में कौनसा कथन सही है?
Consider the context-free grammar G below for arithmetic expressions: E → E + E | E × E | id. Which statement is TRUE?
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Q9.
कौनसी heap-memory allocation strategy program के memory accesses की spatial locality का सबसे अधिक लाभ उठाने की संभावना रखती है?
Which of the following heap memory allocation strategies is likely to exploit spatial locality of memory accesses in a program, the most?
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Q10.
Compiler की phases सामान्यतः किस क्रम में काम करती हैं?
Which sequence below best describes the order in which the phases of a compiler typically work?
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Q11.
Parsing techniques में LL(1) का अर्थ क्या है?
In the context of parsing techniques, LL(1) refers to:
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Q12.
1 Gbps link, 25 ms RTT और 1000-byte packets वाले network में channel utilisation >96% रखने के लिए window size कितनी होनी चाहिए?
A host in one organisation is connected to another host using a 1 Gbps link with 25 ms RTT. Packet size is 1000 bytes. In order to have channel utilisation >96%, how big should the window size, in packets, be, assuming ACK packets have no impact?
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Q13.
CSMA/CD network में minimum frame size 1500 bytes है। 1 km cable पर signal speed 250000 km/s और कोई repeater नहीं है। Maximum data-transfer speed क्या होगी?
In a computer network using CSMA/CD, the minimum frame size is 1500 bytes. What will be the data transfer speed over 1 km cable if signal speed is 250000 km/sec and no repeaters are used?
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Q14.
5-layer protocol hierarchy में application 270-byte messages बनाता है और प्रत्येक layer 6-byte header जोड़ती है। Headers के कारण bandwidth का कितना प्रतिशत waste होगा?
For a 5 layer protocol hierarchy, applications generate 270-byte messages. At each layer a 6-byte header is added. What fraction of network bandwidth, in %, is wasted due to headers?
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Q15.
802.11 versions को Wireless LAN speed से match कीजिए।
Match the following:
(i) 802.11ac — (P) 7 Gbps
(ii) 802.11 a/g — (Q) 11 Mbps
(iii) 802.11ad — (R) 54 Mbps
(iv) 802.11b — (S) 3.5 Gbps
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Q16.
निम्न में से कौनसा कथन सही है?
Which of the following is true?
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Q17.
Expression A*B+C*D का Reverse Polish notation क्या है?
In Reverse Polish notation, expression A*B+C*D is written as
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Q18.
Vectored interrupt में क्या होता है?
In a vectored interrupt
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Q19.
दिए गए finite number of instructions को execute करने के लिए कौनसी processor architecture fastest execution देती है?
For a given finite number of instructions to be executed, which architecture of the processor provides fastest execution?
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Q20.
Instruction pipeline को किसके माध्यम से implement किया जा सकता है?
An instruction pipeline can be implemented by means of
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Q21.
Registers में stored data पर execute होने वाला operation क्या कहलाता है?
The operation executed on data stored in registers is called
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Q22.
Double errors detect करने के लिए कौनसी method प्रयुक्त होती है?
Which of the following methods is used to detect double errors?
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Q23.
Prefix expression `−+abc+d*ef` को a=10, b=2, c=5, d=3, e=4, f=1 के लिए evaluate कीजिए।
The prefix expression is −+abc+d*ef. Evaluate the expression for a=10, b=2, c=5, d=3, e=4, f=1.
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Q24.
Functions f₁(n)=2ⁿ, f₂(n)=n3/2, f₃(n)=n log n तथा f₄(n)=nlog n को increasing asymptotic complexity में लगाइए।
The asymptotic complexity of four functions is f1(n)=2ⁿ, f2(n)=n3/2, f3(n)=n log n, f4(n)=nlog n. Arrange them in increasing order.
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Q25.
यदि प्रत्येक संख्या 3-digit decimal number है, तो radix sort से 6 items को sort करने के लिए maximum comparisons कितनी चाहिए?
What is the maximum number of comparisons needed to sort 6 items using radix sort, if each number is a 3-digit decimal number?
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Q26.
दिए Binary Search Tree में 15 का inorder predecessor क्या है?
What is the Inorder predecessor of 15 in the Binary Search Tree shown below?
            15
          /    
         6      18
       /      /  
      3    7  17  20
     /     
    2   4    13
             /
            9
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Q27.
2-byte integers की array का pointer p address 200 से initialize है। p+3 का value क्या होगा?
Pointer p to an array of integers (of size 2 Bytes) is initialised to 200. What is the value of p+3?
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Q28.
Priority queue में insertion और deletion कहाँ किया जा सकता है?
In a priority queue, insertion and deletion can be done at
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Q29.
n elements के heap sort की worst-case time complexity क्या है?
Worst case time complexity of heap sort for n elements
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Q30.
Table T में Integer columns X,Y हैं। शुरुआत में (1,1) record है। 128 बार नए records X=MX+1, Y=2×MY+1 से insert किए जाते हैं। अंत में `SELECT Y FROM T WHERE X=7;` का output क्या होगा?
Consider a database table T containing two columns X and Y each of type Integer. Initially (X=1,Y=1) is inserted. 128 times a new record is inserted with X=MX+1 and Y=2×MY+1. What is the output of `SELECT Y FROM T WHERE X=7;`?
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Q31.
SQL में `select * from R, S` किसके equivalent है?
In SQL the statement `select * from R, S` is equivalent to
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Q32.
उन teachers के tuples delete करने वाली SQL query चुनिए जिनका department, department relation में building=’CSE’ से associated है।
Which SQL query deletes all tuples in teacher relation for teachers associated with a department located in building CSE?
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Q33.
ACID properties में Durability successful transaction के database changes के बारे में क्या require करती है?
Amongst the ACID properties of a transaction, the ‘Durability’ property requires that the changes made to the database by a successful transaction persist
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Q34.
Fifth Normal Form किससे concerned है?
Fifth Normal form is concerned with
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Q35.
Statements: (i) Digital multiplexer many inputs में से one selected input output करता है। (ii) 1-to-16 demultiplexer के लिए four select lines चाहिए। (iii) Octal-to-binary encoder के लिए eight OR gates चाहिए। कौनसे सही हैं?
Which definitions are true? (i) A digital multiplexer takes one input from many inputs and outputs the selected one. (ii) Four select lines are required for 1-16 demultiplexer. (iii) Eight OR gates are required to implement an octal to binary encoder.
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Q36.
400 MHz clock वाले 8-bit serial register से obtained time delay क्या है?
The time delay obtained through an 8 bit serial register with 400 MHz clock is:
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Q37.
Full adder circuit को कितने inputs और outputs चाहिए?
A full adder circuit requires
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Q38.
दिए logic circuit का logical operation क्या है?
The logical operation of the following circuit is
A ──[NAND inputs tied]──¬A──┐
                         │
                         [NAND]── Y
                         │
B ──[NAND inputs tied]──¬B──┘
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Q39.
कौनसा logic circuit दोनों inputs HIGH या दोनों LOW होने पर LOW output देता है?
A logic circuit that provides a LOW output when both inputs are HIGH or both inputs are LOW is
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Q40.
NOR और NAND gates के दोनों inputs आपस में connected करने पर resulting logic circuit क्या बनता है?
The resulting logic circuit obtained when both inputs of NOR and NAND gates are connected together is:
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Q41.
Matrix P का determinant |P| दिया है। कौनसा statement सही है?
Given P is a matrix. If det|P| denotes determinant of matrix P, which statement is true?
3214
4031
6428
2513
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Q42.
Graph statements में कौनसे true हैं?
(i) In a graph G with n vertices and e edges, sum of degrees of vertices=2e.
(ii) Eccentricity of a connected graph can never be equal to radius of the graph.
(iii) Girth is the total number of edges in the shortest cycle.
(iv) Graph with equal degree for all vertices is multigraph.
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Q43.
Undirected planar graph में five faces और nine vertices हैं। Edges कितनी हैं?
If there are five faces and nine vertices in an undirected planar graph, then number of edges is
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Q44.
Bag में 6 blue, 5 white और 4 yellow balls हैं। Randomly निकली ball के white न होने की probability क्या है?
If a bag contains 6 blue balls, 5 white balls and 4 yellow balls and a ball is drawn at random, probability of not getting a white ball is
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Q45.
m×n और n×p matrices की multiplication complexity क्या है?
The complexity of matrix multiplication of two matrices A and B whose orders are m×n and n×p respectively is
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Q46.
Length m की character string से all lengths के कितने substrings बनाए जा सकते हैं?
From a character string of length m, the number of sub-strings of all lengths that can be formed are:
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Q47.
n variables की truth table में कितनी rows चाहिए?
A truth table will need how many rows if there are n variables.
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Q48.
Linux OS कौनसा multithreading model follow करता है?
Which of the following multithreading model is followed in Linux OS?
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Q49.
Synchronization mechanisms में priority inheritance protocol का purpose क्या है?
Purpose of priority inheritance protocol in synchronization mechanisms is
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Q50.
Memory segmentation allocation strategy में program के code और data जैसे segments को segment numbers कौन assign करता है?
As part of memory segmentation allocation strategy, which of the following assigns segment numbers for various segments of a program like code segment and data segment?
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Q51.
Interrupts के बारे में कौनसा statement false है?
Which of the following is false about interrupts?
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Q52.
Operating system के process schedulers को activities से match कीजिए।
With respect to Process Schedulers of an operating system, match the scheduler type with activity.
Scheduler typeActivity labels
(i) Long term scheduler(P) executes much faster to reduce wastage of CPU time
(ii) Medium term scheduler(Q) controls degree of multiprogramming
(iii) Short Term Scheduler(R) is associated with swapping
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Q53.
Producer-consumer/Bounded-Buffer problem में buffer empty होने पर consumer को wait कराने के लिए कौनसा synchronization primitive सबसे उपयुक्त है?
In a producer-consumer scenario also known as Bounded-Buffer Problem, what would be the most appropriate synchronization primitive to ensure that the consumer waits when the buffer is empty?
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Q54.
किसी process द्वारा OS या दूसरे user/process की allocated memory access करने का attempt किसमें result करता है?
Any attempt by a process to access memory allocated to OS or process of other user results into
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Q55.
Alphabet {a,b} वाले दिए DFA द्वारा accepted language को कौनसा regular expression define करता है?
Consider the deterministic finite-state automaton (DFA) below. Which regular expression defines the language accepted by the DFA?
start → q0 --a--> [q1 final]
        |          ↻ b
        b           |
        ↓           a
       qdead ←──────┘
        ↻ a,b
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Q56.
दिए NFA की language के minimal DFA में कितने states होंगे?
Consider the Nondeterministic Finite-State Automaton (NFA) below. The number of states in the MINIMAL DFA for this language is:
start → q0 ──b──> q1 ──a,b──> [q2 final]
        ↻ a,b
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Q57.
CFG `S→aSb|T`, `T→bT|b` कौनसी language generate करता है?
Consider the context-free grammar G: S→aSb|T, T→bT|b. The language generated by G is:
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Q58.
निम्न statements में कौनसा NOT true है?
Which of the following statements is NOT true?
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Q59.
निम्न में कौनसा statement FALSE है?
Which of the following statements is FALSE?
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Q60.
CFG `S→aaSb|T`, `T→Tb|a` द्वारा generated language के लिए कौनसा statement true है?
Consider the context-free grammar G: S→aaSb|T, T→Tb|a. Which statement is true about L(G)?
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Q61.
AI के First Order Logic में निम्न में कौनसा connective नहीं है?
Which of the following is not a connective of First Order Logic with reference to AI?
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Q62.
Hybrid Bayesian network में किस प्रकार के variables होते हैं?
A hybrid Bayesian network contains
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Q63.
Big Data paradigm में कौनसे scenarios HDFS के लिए good fit नहीं हो सकते?
Which of the following scenario may not be a good fit for HDFS in Big data paradigm?
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Q64.
Applications की monitoring और management के लिए standard Java API कौनसी है?
A standard Java API for monitoring and managing applications is
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Q65.
K-Means Algorithm किस clustering technique का उपयोग करता है?
Which of the following clustering technique is used by K-Means Algorithm?
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Q66.
Cassandra किस प्रकार का data storage system है?
Which type of data storage system Cassandra is?
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Q67.
Single organisation के premises के भीतर solely उपयोग की जाने वाली cloud infrastructure क्या कहलाती है?
The cloud infrastructure solely for a single organisation within its premises is
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Q68.
Load spikes handle करने के लिए temporarily capacity rent करना क्या कहलाता है?
Temporarily renting the capacity to handle spikes in load is called
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Q69.
True/False: (i) Virtualisation same hardware पर multiple OS simultaneously चलने देती है। (ii) Dual boot में multiple OS simultaneously चल सकते हैं।
State whether true or false: (i) Virtualisation facilitates multiple OS simultaneously on the same hardware. (ii) In dual boot, multiple OS can run simultaneously.
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Q70.
किस virtualization technique में hypervisor guest OS को modify करता/modified guest OS की जरूरत होती है?
In which of the virtualization techniques, hypervisor modifies the guest OS?
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Q71.
ICMP packets से संबंधित Ping of Death issue का कारण क्या है?
Which of the following is the cause of Ping of death issue related to ICMP packets?
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Q72.
Information-security concepts को उनके functions से match कीजिए।
Match the following and select the correct option.
(i) Encryption(P) Manipulation of identification of a host through NIC identifier
(ii) MAC Cloning(Q) Determining version and name of OS and OS utilities
(iii) ARP Spoofing(R) Protecting the confidentiality
(iv) Finger printing(S) Poisoning the IP to MAC address mapping
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Q73.
Information Security में closely-associated items का matching कीजिए।
Match the following in the context of Information Security which are closely associated.
(i) Ingress filtering(P) Data leakage prevention
(ii) Egress filtering(Q) Hiding identity of systems
(iii) NAT(R) Keep track of TCP/IP connections
(iv) Stateful firewall(S) Malicious traffic prevention
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Q74.
Asymmetric encryption किसके लिए suitable नहीं है?
Asymmetric encryption is not suitable for
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Q75.
CAPTCHA किससे protection देने के लिए उपयोग होता है?
CAPTCHA is used to provide protection from
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Q76.
MCDC software testing technique का full form क्या है?
The MCDC software testing technique stands for
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Q77.
Regression testing किसे validate करने पर focus करती है?
Regression testing focuses on validating
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Q78.
HIPO chart को और किस नाम से जाना जाता है?
HIPO chart is also known as
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Q79.
Program control graph G में e edges, n nodes और p disconnected paths/components हैं। McCabe cyclomatic complexity number का formula कौनसा है?
McCabe’s cyclomatic complexity number of a program control graph G with e edges, n nodes and p disconnected paths is defined as
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Q80.
Entity Relationship model किस view को दर्शाता है?
Entity Relationship model shows the
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Q81.
कौनसा option question mark को replace करता है? (1 अंक)
Which option replaces the question mark? (1 Mark)
Paint can  →  Paint brush
Thread spool → ?

1. Dress
2. Scissors
3. Pen
4. Needle and thread
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Q82.
Figure analogy में question mark को कौनसा option replace करेगा? (1 अंक)
Which option replaces the question mark? (1 Mark)
Outline small △ at top-left + vertically striped large △ pointing UP
                         ↓ same transformation
Solid small ▲ at top-right + vertically striped large △ pointing RIGHT

Outline small □ at top-left + vertically striped tall rectangle
                         ↓
                         ?
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Q83.
दिए operation-symbol rules को input shapes पर apply करने पर कौनसा option मिलेगा? (2 अंक)
Which option replaces the question mark? Apply the operation-symbol rules shown in the source figure. (2 Marks)
Rules shown in source:
• one symbol makes the 1st item half size
• one symbol shades the 1st item
• one symbol rotates the 2nd item 90° anticlockwise
• one symbol shifts all items one position right

Input: [large filled square] [outline circle] [crescent]
Apply the two shown operators → ?
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Q84.
आप retail clerk हैं और सामान्यतः Monday-Friday काम करते हैं। नई schedule में manager ने Saturday shift दी है, जबकि Saturday को आपके बेटे की birthday party planned है। सबसे appropriate response क्या है? (1 अंक)
You are a retail clerk who typically works Monday through Friday. You arrive at work and notice the new schedule is posted, and your manager has given you a Saturday shift. It happens to be your son’s birthday on Saturday, and you have a party planned. What is the most appropriate response? (1 Mark)
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Q85.
Job applicants के survey में two-fifths ने कम-से-कम थोड़ा dishonest होने की बात मानी। Survey dishonest applicants का proportion underestimate क्यों कर सकता है? (1 अंक)
In a survey of job applicants, two-fifths admitted to being at least a little dishonest. However, the survey may underestimate the proportion of job applicants who are dishonest, because ________. (1 Mark)
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Q86.
Eight friends P,Q,R,S,T,V,W,Y square table के चारों ओर बैठे हैं। चार corners पर centre-facing और चार side mid-points पर outside-facing हैं। S, P के right से third है; P centre-facing है; Y, P या S के beside नहीं; T, R के right से third है; R side midpoint पर नहीं और Y के beside नहीं; P और V के बीच केवल एक व्यक्ति है; Q, V के beside नहीं। T और Q के बीच कितने लोग हैं? (2 अंक)
Eight friends P, Q, R, S, T, V, W and Y are sitting around a square table under the stated corner/mid-point facing conditions. How many people are there between T and Q? (2 Marks)
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Q87.
Domino sequence में question mark को कौनसा option replace करेगा? (1 अंक)
Which option replaces the question mark? (1 Mark)
[3|2] [2|1] [1|0] | [0|1] [1|2] [2|3] | ? | [1|0]
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Q88.
Question mark की जगह कौनसी संख्या आएगी? (1 अंक)
Which one will replace the question mark? (1 Mark)
 0   6       6   2       4   14
   /          /          /
  10          24           ?
  /          /          / 
 2   4       8  10      10  12
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Q89.
दिए transformation-flow diagram में question mark को कौनसा option replace करेगा? (2 अंक)
Which option replaces the question mark? (2 Marks)
Source rule diagram combines three transformation symbols:
• first symbol changes the internal line arrangement
• X-symbol applies the second transformation
• dot-symbol applies the third transformation

Bottom sequence:
black square with descending diagonal
→ transformation symbol
→ X symbol
→ ?

Options A, B, C, D are the four source square-line patterns.
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Q90.
Fact 1: Pictures can tell a story. Fact 2: सभी storybooks में pictures हैं। Fact 3: कुछ storybooks में words हैं। कौनसा statement must also be a fact है? I. Pictures words से बेहतर story बता सकते हैं। II. Storybooks की stories बहुत simple हैं। III. कुछ storybooks में words और pictures दोनों हैं। (1 अंक)
Fact 1: Pictures can tell a story. Fact 2: All storybooks have pictures. Fact 3: Some storybooks have words. Which statement must also be a fact? I. Pictures can tell a story better than words can. II. The stories in storybooks are very simple. III. Some storybooks have both words and pictures. (1 Mark)
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Q91.
Statement: Exporters आरोप लगा रहे हैं कि commercial banks RBI के foreign-currency post-shipment export credit को international rates पर operate करने वाले directive का उल्लंघन कर रहे हैं। Courses of Action: I. संबंधित bank officers को suspend किया जाए। II. RBI को banks को ऐसे directives देना बंद करने को कहा जाए। (1 अंक)
Statement: Exporters in the capital are alleging that commercial banks are violating an RBI directive to operate a post-shipment export credit denominated in foreign currency at international rates. Courses of Action: I. The officers concerned in the commercial banks are to be suspended. II. RBI should be asked to stop giving such directives to commercial banks. (1 Mark)
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Q92.
Series में wrong number ज्ञात कीजिए: 7, 8, 18, 57, 228, 1165, 6996। (2 अंक)
Find out the wrong number in the series: 7, 8, 18, 57, 228, 1165, 6996. (2 Marks)
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Q93.
नीचे graph में एक सप्ताह की earnings दिखाई गई हैं। किन दो दिनों के बीच earnings का difference सबसे बड़ा था? (1 अंक)
Directions: The graph represents variations in earnings in rupees over a week. The difference in earnings was large between (1 Mark)
DayApprox. Earnings
Sunday100
Monday500
Tuesday300
Wednesday600
Thursday650
Friday300
Saturday350
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Q94.
Table को देखकर बताइए: 1983 से 1985 तक D-type toys के production में approximate percentage increase कितना था? (1 अंक)
Study the following table carefully. What was the percentage (approximate) increase in production of D type of toys from 1983 to 1985? (1 Mark)
YearsABCDE
1982200150789065
198315018010010570
19841801759211085
198519516012012575
198622018513013580
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Q95.
620 mm perimeter वाले rectangle का maximum area कितना है? (2 अंक)
What is the maximum area of the rectangle with perimeter 620 mm? (2 Marks)

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