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12th Standard Computer Science English Medium Free Online Test One Mark Questions with Answer Key 2020 - Part Eight

12th Standard

    Reg.No. :
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Computer Science

Time : 00:25:00 Hrs
Total Marks : 25

    Answer all the questions

    25 x 1 = 25
  1. Which of the following defines what an object can do?

    (a)

    Operating System

    (b)

    Compiler

    (c)

    Interface

    (d)

    Interpreter

  2. The data type whose representation is known are called

    (a)

    Built in datatype

    (b)

    Derived datatype

    (c)

    Concrete datatype

    (d)

    Abstract datatype

  3. Time complexity of bubble sort in best case is

    (a)

    θ (n)

    (b)

    θ (nlogn)

    (c)

    θ (n2)

    (d)

    θ (n(logn) 2)

  4. Which of the following is not an example of data structures?

    (a)

    Control statement

    (b)

    Structure

    (c)

    List

    (d)

    Dictionary

  5. How many components required to find the space required by an algorithm?

    (a)

    4

    (b)

    3

    (c)

    6

    (d)

    2

  6. A theoretical performance analysis of an algorithm is called_________

    (a)

    Posteriori testing

    (b)

    Priori estimates

    (c)

    Algorithmic efficiency

    (d)

    Algorithmic testing

  7. Which of the following is not a token ?

    (a)

    Interpreter

    (b)

    Identifiers

    (c)

    Keyword

    (d)

    Operators

  8. Which of the following can not be identify by an identifier

    (a)

    constant

    (b)

    variable

    (c)

    function

    (d)

    class

  9. What is the output of the following snippet?
    i=1
    while True:
    if i%3 ==0:
    break
    print(i,end='')
    i +=1

    (a)

    12

    (b)

    123

    (c)

    1234

    (d)

    124

  10. In which arguments the correct positional order is passed to a function?

    (a)

    Required

    (b)

    Keyword

    (c)

    Default

    (d)

    Variable-length

  11. Which of the following is not a type of function in python?

    (a)

    Control

    (b)

    Lambda

    (c)

    Recursion

    (d)

    Built in

  12. print (format (14,'f') displays

    (a)

    14.00

    (b)

    14

    (c)

    14.0000

    (d)

    14.000000

  13. Let setA={3,6,9}, setB={1,3,9}. What will be the result of the following snippet?
    print(setA|setB)

    (a)

    {3,6,9,1,3,9}

    (b)

    {3,9}

    (c)

    {1}

    (d)

    {1,3,6,9}

  14. Which of the following function used to delete one or more elements in the list where the index value is not known

    (a)

    del ()

    (b)

    remove ()

    (c)

    delete ()

    (d)

    delmore ()

  15. Which of the following can be accessed by using object with dot (.) operator?

    (a)

    List

    (b)

    Tuples

    (c)

    Dictionary

    (d)

    None of these

  16. Relational database model was first proposed by

    (a)

    E F Codd

    (b)

    E E Codd

    (c)

    E F Cadd

    (d)

    E F Codder

  17. In which of the following data organized in a way that, it can be easily accessed, managed and updated?

    (a)

    Database

    (b)

    DBMS

    (c)

    Structure

    (d)

    Object

  18. Who are the one responsible for identifying the data to be stored in the data base?

    (a)

    DBA

    (b)

    Application programmers

    (c)

    End user

    (d)

    Database designers

  19. Which of the following ensures the accuracy and reliability of the data in the database?

    (a)

    Constraint

    (b)

    Table

    (c)

    Classes

    (d)

    Data types

  20. Which command is used to retrieve a subset of records from one or more tables?

    (a)

    QUERY

    (b)

    SUBSET

    (c)

    SET

    (d)

    SELECT

  21. A __________ is a collection of related fields in a table.

    (a)

    Attributes

    (b)

    SQL

    (c)

    Record

    (d)

    Relations

  22. Which of the following module is provided by Python to do several operations on the CSV files?

    (a)

    py

    (b)

    xls

    (c)

    csv

    (d)

    os

  23. CSV means

    (a)

    Condition separated values

    (b)

    Colon separated values

    (c)

    C++ solution values

    (d)

    Comma separated values

  24. Which of the following is not a format in which CSV file data can be read?

    (a)

    Quotes

    (b)

    Pipe

    (c)

    Semi colon

    (d)

    Comma

  25. Identify the function call statement in the following snippet.
    if __name__ =='__main__':
    main(sys.argv[1:])

    (a)

    main(sys.argv[1:])

    (b)

    __name__

    (c)

    __main__

    (d)

    argv

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