NTS GAT Subject (Computer Science) FLP 3 Free Quiz

NTS GAT Subject (Computer Science) – FLP 3

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NTS GAT Subject (Computer Science) – FLP 3 consists of 100 MCQs covering 1 subjects. You have 120 minutes to complete it. Start with the easier questions and manage your time wisely. Good luck!

Computer Science 100 MCQs

1. What does an interpreter do?

A. Translates entire code before execution B. Translates and executes line by line C. Compiles the whole program D. Links object files

2. What is the assignment operator in most programming languages?

A. == B. = C. === D. !=

3. What is the ternary operator?

A. A type of loop B. A data structure C. A shorthand for if-else D. A function

4. What is a subclass?

A. A class that creates objects B. A class that inherits from another class C. A class that is inherited from D. A class with no methods

5. What is an abstract class?

A. A class with no methods B. A class with only concrete methods C. A class with private methods D. A class that cannot be instantiated

6. What does a static method belong to?

A. Belongs to an instance B. Belongs to the subclass C. Belongs to the superclass D. Belongs to the class

7. What is aggregation in OOP?

A. Stronger than composition B. Same as composition C. Only with classes D. Weaker form where parts exist independently

8. What is the new keyword used for?

A. To delete an object B. To create an object C. To call a method D. To define a class

9. What is a doubly linked list?

A. References to both previous and next nodes B. Reference to next node only C. Reference to previous node only D. No references

10. What is a binary tree?

A. Each node has at most one child B. Each node has exactly two children C. Each node has at most three children D. Each node has at most two children

11. What is a heap data structure?

A. Array-based structure B. Linked list C. Graph D. Tree satisfying heap property

12. What does time complexity measure?

A. Memory used B. Steps in algorithm C. Time taken to complete D. Lines of code

13. What is the time complexity of bubble sort?

A. O(n) B. O(log n) C. O(n log n) D. O(n^2)

14. What is the time complexity of merge sort?

A. O(n) B. O(n log n) C. O(n^2) D. O(log n)

15. What is dynamic programming?

A. Uses no storage B. Ignores past results C. Stores intermediate results D. Uses recursion only

16. What is a greedy algorithm?

A. Makes the globally optimal choice B. Makes random choices C. Makes no choices D. Makes locally optimal choice at each step

17. What is a brute force algorithm?

A. Tries one solution B. Tries all possible solutions C. Tries no solutions D. Tries random solutions

18. What data structure does BFS use?

A. Stack B. Tree C. Queue D. Array

19. What does Second Normal Form (2NF) require?

A. 1NF and no partial dependency B. 1NF only C. 1NF and no transitive dependency D. No redundancy

20. What does the JOIN clause do in SQL?

A. Deletes rows B. Combines rows from tables C. Adds new rows D. Sorts rows

21. What does the WHERE clause do?

A. Filters groups B. Filters after grouping C. Filters rows before grouping D. Orders rows

22. What does the COUNT aggregate function do?

A. Returns sum of values B. Returns number of rows C. Returns average D. Returns maximum

23. What is Round Robin scheduling?

A. Assigns priority B. Assigns no time limit C. Assigns variable time D. Assigns a fixed time quantum cyclically

24. What is SMTP used for?

A. Sending emails B. Receiving emails C. Web browsing D. File transfer

25. What is a router?

A. Connects two computers B. Connects two devices C. Forwards data packets between networks D. Converts signals

26. What type of communication does UDP provide?

A. Connectionless, unreliable B. Connection-oriented, reliable C. Connection-oriented, unreliable D. Connectionless, reliable

27. What does NAT do?

A. Translates domain names B. Translates MAC addresses C. Translates private IP to public IP D. Translates port numbers

28. What is the software development life cycle (SDLC)?

A. A programming language B. A tool C. A framework for software development D. A testing method

29. What is the waterfall model?

A. Iterative process B. Incremental process C. Spiral process D. Sequential, linear process

30. What type of diagram is a class diagram?

A. A dynamic diagram B. A static structure diagram C. A behavioral diagram D. A use case diagram

31. What is integration testing?

A. Tests individual modules B. Tests the entire system C. Tests user interface D. Tests interaction between integrated modules

32. What is the Observer pattern?

A. One-to-one dependency B. One-to-many dependency C. Many-to-many dependency D. No dependency

33. What is superscalar architecture?

A. Single instruction at a time B. Instructions in sequence C. Instructions with no parallelism D. Multiple instructions in parallel

34. What is the heap used for?

A. Static allocation B. Dynamic allocation C. Register allocation D. Cache allocation

35. Is the intersection of two regular languages regular?

A. Never regular B. Always regular C. Sometimes regular D. Always context-free

36. When is a grammar ambiguous?

A. Only one parse tree B. No parse tree C. Exactly two parse trees D. More than one parse tree

37. How many levels are in the Chomsky hierarchy?

A. Three levels B. Four levels C. Five levels D. Two levels

38. What is the form of productions in a context-sensitive grammar?

A. αAβ → αγβ B. A → γ C. A → ε D. αAβ → γ

39. What characterizes a recursively enumerable language?

A. Always halts B. Never halts C. May not halt for non-strings D. Halts for all strings

40. What does state minimization do?

A. Increases states B. Reduces states without changing language C. Changes language D. Adds new transitions

41. What does the subset construction algorithm do?

A. NFA to DFA B. DFA to NFA C. PDA to DFA D. Turing machine to DFA

42. What does a compiler do?

A. High-level to machine code B. Executes code line by line C. Converts assembly to machine code D. Combines object files

43. What does intermediate code generation produce?

A. Produces machine code B. Produces source code C. Produces intermediate code D. Produces assembly code

44. What type of parsing is recursive descent?

A. Bottom-up parsing B. LR parsing C. Recursive descent parsing D. Operator precedence parsing

45. What is left recursion?

A. Non-terminal derives itself B. Non-terminal derives terminal C. Non-terminal derives empty D. Non-terminal derives all

46. What are synthesized attributes?

A. Computed from child nodes B. Computed from parent nodes C. Computed from siblings D. Not computed

47. What is a JIT compiler?

A. Compiles at compile time B. Compiles at runtime C. Interprets code D. Optimizes code

48. What does the Java Virtual Machine execute?

A. Java bytecode B. C code C. C++ code D. Python code

49. What is operator precedence parsing?

A. Top-down parsing B. Recursive descent C. Operator precedence parsing D. LL parsing

50. What is LALR parser a simplified version of?

A. Canonical LR B. LALR C. SLR D. LR(0)

51. What is a basic block?

A. Multiple entry points B. Multiple exit points C. Single entry and single exit D. No entry points

52. What is strength reduction?

A. Adds operations B. Removes operations C. Replaces expensive with cheaper operations D. Reorders operations

53. What algorithm parses expressions efficiently?

A. Recursive descent B. LR parsing C. LL parsing D. Precedence climbing

54. What does a type system define?

A. Defines type usage and checking B. Defines syntax C. Defines semantics D. Defines optimization

55. What is tail recursion?

A. Cannot be optimized B. Can be optimized C. Is inefficient D. Is not recursive

56. What does a polymorphic function do?

A. Same type B. No types C. Different types D. Only integers

57. What is used for handling side effects in functional programming?

A. Object-oriented pattern B. Procedural pattern C. Concurrent pattern D. Monad

58. What is a trap?

A. Software-generated interrupt B. Hardware-generated interrupt C. CPU interrupt D. I/O interrupt

59. What does garbage collection do?

A. Reclaims unused memory B. Allocates memory C. Deallocates memory D. Compacts memory

60. What is a bus error?

A. Memory access violation B. Compile error C. Memory alignment violation D. Link error

61. What does the Java compiler produce?

A. Machine code B. Assembly code C. Source code D. Bytecode

62. What does the Python interpreter do?

A. Compiles to bytecode B. Executes directly C. Compiles to machine code D. Compiles to assembly

63. What are the two main types of parsers?

A. Top-down or bottom-up B. Left-to-right or right-to-left C. Depth-first or breadth-first D. Recursive or iterative

64. What does a production rule define?

A. Defines a terminal B. Defines a non-terminal and its derivation C. Defines a token D. Defines a parse tree

65. What is an admissible heuristic?

A. Always overestimates B. Always underestimates C. Estimates exactly D. Never overestimates

66. What does minimax do?

A. Maximizing loss B. Minimizing gain C. Minimizing loss D. Maximizing gain

67. What is gradient descent?

A. Maximization algorithm B. Random algorithm C. Optimization algorithm D. Classification algorithm

68. What is logistic regression used for?

A. Regression B. Classification C. Clustering D. Reinforcement

69. What are decision trees used for?

A. Both classification and regression B. Only classification C. Only regression D. Clustering

70. What is underfitting?

A. Overfitting B. Well C. Underfitting D. Both

71. What does feature scaling do?

A. Normalizes features B. Adds features C. Removes features D. Ignores features

72. What does the ROC curve plot?

A. Precision-recall curve B. Accuracy curve C. ROC curve D. F1 curve

73. What is a line plot used for?

A. Categorical data B. Correlation C. Time series D. Distribution

74. What is the median?

A. Median B. Mean C. Mode D. Standard deviation

75. What is the mode?

A. Mean B. Median C. Mode D. Range

76. What does a data warehouse store?

A. Operational data B. Historical data C. Real-time data D. Unstructured data

77. What does a data lake store?

A. Processed data B. Aggregated data C. Raw data D. Summarized data

78. What is CSS used for?

A. Structure B. Interactivity C. Styling D. Database

79. What does a web server do?

A. Web server B. Database server C. Mail server D. File server

80. What is JSON?

A. JSON B. XML C. HTML D. CSV

81. What is Vue.js?

A. Back-end B. Database C. Vue.js D. Server

82. What is MVC?

A. Only model B. MVC C. Only view D. Only controller

83. What coordinate system enables affine transformations?

A. Cartesian B. Spherical C. Homogeneous D. Cylindrical

84. What projection simulates depth?

A. Orthographic B. Perspective C. Isometric D. Parallel

85. What does integrity ensure?

A. Confidentiality B. Availability C. Authenticity D. Integrity

86. What uses public-private key pair?

A. Asymmetric B. Symmetric C. Hash D. Stream

87. What monitors network traffic?

A. Antivirus B. Firewall C. Encryption D. IDS

88. What is a DoS attack?

A. Virus B. Worm C. Trojan D. Denial-of-Service

89. What provides secure communication over the internet?

A. Proxy B. Firewall C. VPN D. IDS

90. What gate outputs 1 when inputs differ?

A. AND B. OR C. NAND D. XOR

91. What converts multiple inputs to binary?

A. Decoder B. Encoder C. MUX D. DEMUX

92. What synchronizes sequential circuits?

A. Data B. Clock C. Power D. Ground

93. What is the hold time?

A. Setup time B. Propagation delay C. Hold time D. Transition

94. What is the foundation of digital logic?

A. Calculus B. Boolean algebra C. Linear algebra D. Geometry

95. What does discrete structures deal with?

A. Distinct and separate objects B. Continuous objects C. Infinite objects D. Undirected objects

96. What graph has a path between every pair?

A. Disconnected B. Complete C. Connected D. Bipartite

97. What quantifier means "there exists"?

A. Universal (∀) B. For all C. Existential (∃) D. Unique

98. What is the middle value?

A. Median B. Mean C. Mode D. Range

99. What is the most frequent value?

A. Mean B. Median C. Mode D. Standard deviation

100. What represents a frequency distribution?

A. Bar chart B. Histogram C. Pie chart D. Line chart

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