HAT Subject (Computer Science) FLP 2 Free Quiz

HAT Subject (Computer Science) – FLP 2

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HAT Subject (Computer Science) – FLP 2 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 is recursion?

A. When a function calls another function B. When a function calls itself C. When a loop iterates D. When a program ends

2. What is A* algorithm used for?

A. Pathfinding and graph traversal B. Sorting C. Searching D. Compression

3. What is the prefix sum algorithm used for?

A. Calculates averages B. Calculates products C. Calculates sums of ranges D. Calculates differences

4. What is a rational agent?

A. Acts randomly B. Acts to learn C. Acts to explore D. Acts to achieve best outcome

5. What is a neural network?

A. Computer program B. Computational model inspired by brain C. Database D. Algorithm

6. What does regularization do?

A. Adds data B. Penalizes complexity C. Removes data D. Adds noise

7. 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

8. What does semantic analysis do?

A. Checks grammar B. Checks meaning and context C. Generates code D. Optimizes code

9. What is a common intermediate representation in compilers?

A. Two-address code B. Four-address code C. Single-address code D. Three-address code

10. When is a grammar ambiguous?

A. If it has left recursion B. If it has right recursion C. If it is not LL D. If a string has multiple derivations

11. What is loop unrolling?

A. Removes loops B. Adds loops C. Combines loops D. Replicates loop iterations to reduce overhead

12. What does the Java Virtual Machine execute?

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

13. What does a source-to-source compiler do?

A. C to C++ B. C++ to Java C. Source to machine code D. High-level to high-level

14. What type of automaton recognizes context-free grammars?

A. Finite automaton B. Pushdown automaton C. Turing machine D. Linear bounded automaton

15. What is a shift-reduce parser?

A. Top-down parser B. Recursive descent parser C. LL parser D. Shift-reduce parser

16. What is LALR parser a simplified version of?

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

17. What is a classic example of ambiguity in programming languages?

A. Dangling else B. Dangling if C. Dangling while D. Dangling for

18. What tracks variable declarations and attributes?

A. Parse tree B. Token stream C. Symbol table D. Code block

19. What does type inference do?

A. Determines type automatically B. Requires type annotation C. Determines at runtime D. Uses dynamic typing

20. What is a type class in Haskell?

A. Java interface B. C++ class C. Haskell type class D. Python class

21. What is lazy evaluation?

A. Delays computation until needed B. Computes immediately C. Computes multiple times D. Never computes

22. What is message passing?

A. Shared memory B. Message passing C. Global variables D. File I/O

23. What is an interrupt?

A. Software call B. Signal halting CPU C. System call D. Function call

24. What is the heap used for?

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

25. What is a garbage collection technique?

A. Mark-sweep B. Mark-compact C. Reference counting D. Generational

26. What is a segmentation fault?

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

27. What is stepping in debugging?

A. Runs all code B. Skips code C. Executes line by line D. Jumps to end

28. What does a parser generator do?

A. Regular expressions to code B. Lexical rules to code C. Grammar to code D. Machine code to source

29. What is a symbol table used for?

A. Stores identifier information B. Stores parse trees C. Stores object code D. Stores error messages

30. What does a loader do?

A. Compiles code B. Loads into memory C. Links files D. Optimizes code

31. What type of parsing is recursive descent?

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

32. What is LL parsing?

A. Bottom-up parsing B. Reads right to left C. Reads random D. Left-to-right top-down parsing

33. What is texture mapping?

A. Texture mapping B. Coloring C. Shading D. Lighting

34. What are geometric transformations?

A. Translation, rotation, scaling B. Rotation only C. Scaling only D. Translation only

35. What uses multiple texture resolutions?

A. Texture B. Shader C. Mipmapping D. Buffer

36. What does WAN stand for?

A. Wireless Area Network B. World Area Network C. Web Area Network D. Wide Area Network

37. Which protocol transfers files between computers?

A. HTTP B. FTP C. SMTP D. POP3

38. How many bits are in an IPv6 address?

A. 32 bits B. 128 bits C. 64 bits D. 256 bits

39. What type of communication does TCP provide?

A. Unreliable communication B. Reliable, connection-oriented communication C. Connectionless communication D. Best effort delivery

40. What does NAT do?

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

41. What is DMA?

A. CPU controlled transfer B. Software controlled transfer C. Interrupt driven transfer D. Direct transfer without CPU

42. How does big-endian store bytes?

A. Most significant byte first B. Least significant byte first C. Middle byte first D. Random order

43. What does data science involve?

A. Only collection B. Only analysis C. Collection, cleaning, analysis, visualization D. Only visualization

44. What is the median?

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

45. What is variance?

A. Covariance B. Variance C. Correlation D. Skewness

46. What does causation imply?

A. Correlation B. No relationship C. Causation D. Association

47. What do inferential statistics do?

A. Descriptive B. Predictive C. Prescriptive D. Inferential

48. What does a p-value indicate?

A. Effect size B. P-value C. Confidence interval D. Standard error

49. What does a confidence interval provide?

A. Confidence interval B. P-value C. Effect size D. Standard deviation

50. What are the 3Vs of Big Data?

A. Only volume B. Only velocity C. Volume, velocity, variety D. Only variety

51. What does data profiling do?

A. Cleaning B. Data profiling C. Modeling D. Visualization

52. What is storytelling with data?

A. Only numbers B. Only charts C. Narratives and visuals D. Only tables

53. What is a hash table?

A. Stores only keys B. Stores only values C. Uses no hash function D. Stores key-value pairs with hash function

54. What is a trie data structure used for?

A. Used for numbers only B. Used for storing strings C. Used for graphs D. Used for arrays

55. Which SQL statement is used to query data?

A. INSERT B. UPDATE C. DELETE D. SELECT

56. What is a transaction in a database?

A. A single operation B. A query C. A backup D. A sequence of operations as a single unit

57. What is the complement of an AND gate?

A. AND B. NAND C. OR D. NOR

58. What routes one input to many outputs?

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

59. What circuits output only on current inputs?

A. Sequential B. Feedback C. Combinational D. Synchronous

60. What is the foundation of digital logic?

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

61. What maps each element of a domain to exactly one codomain element?

A. Relation B. Sequence C. Tuple D. Function

62. What is a tree?

A. Acyclic connected B. Cyclic C. Disconnected D. With loops

63. What formula is always false?

A. Tautology B. Contingency C. Satisfiable D. Contradiction

64. What assigns colors to avoid adjacent same colors?

A. Graph coloring B. Labeling C. Numbering D. Sorting

65. What detects malicious activities?

A. Intrusion detection system B. Firewall C. Antivirus D. Proxy

66. What is a DoS attack?

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

67. What helps with password management?

A. Encryption B. Password manager C. Firewall D. Antivirus

68. What does feature scaling do?

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

69. What is F1-score?

A. Accuracy B. Precision C. F1-score D. Recall

70. What is ensemble learning?

A. Single model B. No models C. One model D. Combines multiple models

71. What is Object-Oriented Programming (OOP)?

A. Based on objects and classes B. Based on functions only C. Based on arrays only D. Based on pointers only

72. What is encapsulation in OOP?

A. Inheritance of properties B. Bundling of data and methods C. Hiding of data D. Multiple inheritance

73. What does the "this" keyword refer to?

A. Refers to the current instance B. Refers to the superclass C. Refers to the subclass D. Refers to a static method

74. What is a thread?

A. A process B. A program C. A kernel D. Smallest unit of execution within a process

75. What is segmentation?

A. Divides memory into fixed blocks B. Divides memory into variable-sized segments C. Divides memory into pages D. Divides memory into frames

76. What does exec() do?

A. Creates a new process B. Terminates a process C. Replaces current process with a new program D. Waits for a process

77. What does probability measure?

A. Likelihood of an event B. Certainty C. Impossibility D. Chance

78. What takes countable values?

A. Continuous B. Infinite C. Uncountable D. Discrete countable

79. What measures the spread of a distribution?

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

80. What is the middle value?

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

81. What is the difference between max and min?

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

82. What is pseudocode?

A. An informal algorithm description B. A programming language C. A compiler D. A data structure

83. What is the switch statement?

A. A loop B. A variable C. A multi-way branch statement D. A function

84. What is software engineering?

A. Systematic approach to software development B. Writing code only C. Testing only D. Designing only

85. What are use cases used for?

A. Non-functional requirements B. Design requirements C. Functional requirements D. Test requirements

86. What does system testing test?

A. Tests individual modules B. Tests the complete integrated system C. Tests interaction between modules D. Tests unit components

87. What is the spiral model?

A. Sequential model B. Iterative and risk-driven model C. Incremental model D. Waterfall model

88. What is software quality assurance?

A. Ensures quality standards B. Writes code C. Tests code D. Designs software

89. What is black-box testing?

A. Testing without internal code knowledge B. Testing with internal code knowledge C. Testing only code coverage D. Testing only performance

90. What is the role of the product owner in Scrum?

A. Manages the team B. Writes code C. Maximizes product value D. Tests the product

91. What is automata theory?

A. Study of abstract machines and formal languages B. Study of computers C. Study of algorithms D. Study of programming languages

92. What is a DFA?

A. Multiple transitions for each symbol B. Exactly one transition for each symbol C. No transitions D. Any number of transitions

93. What type of language does a DFA accept?

A. Context-free language B. Context-sensitive language C. Regular language D. Recursively enumerable language

94. What do regular expressions describe?

A. Context-free languages B. Context-sensitive languages C. All languages D. Regular languages

95. Which model can simulate any algorithm?

A. Finite automaton B. Pushdown automaton C. Linear bounded automaton D. Turing machine

96. What characterizes a recursively enumerable language?

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

97. What is HTML used for?

A. Structure web content B. Style web content C. Add interactivity D. Define data

98. What does a web server do?

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

99. What is JSON?

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

100. What is a cookie?

A. Cookie B. Session C. Local storage D. Cache

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