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12th Standard Computer Science English Medium Free Online Test 1 Mark Questions 2020 - Part Nine

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. Which of the following is a compound structure?

    (a)

    Pair

    (b)

    Triplet

    (c)

    single

    (d)

    quadrat

  3. Which of the following members of a class can be handled only from within the class?

    (a)

    Public members

    (b)

    Protected members

    (c)

    Secured members

    (d)

    Private members

  4. Time complexity of bubble sort in best case is

    (a)

    θ (n)

    (b)

    θ (nlogn)

    (c)

    θ (n2)

    (d)

    θ (n(logn) 2)

  5. Which operator is also called as Comparative operator?

    (a)

    Arithmetic

    (b)

    Relational

    (c)

    Logical

    (d)

    Assignment

  6. What is the output of the following snippet?
    T=1
    while T:
    print(True)
    break

    (a)

    False

    (b)

    True

    (c)

    0

    (d)

    no output

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

    (a)

    Required

    (b)

    Keyword

    (c)

    Default

    (d)

    Variable-length

  8. What is stride?

    (a)

    index value of slide operation

    (b)

    first argument of slice operation

    (c)

    second argument of slice operation

    (d)

    third argument of slice operation

  9. What will be the result of the following Python code?
    S=[x**2 for x in range(5)]
    print(S)

    (a)

    [0,1,2,4,5]

    (b)

    [0,1,4,9,16]

    (c)

    [0,1,4,9,16,25]

    (d)

    [1,4,9,16,25]

  10. Which of the following class declaration is correct?

    (a)

    class class_name

    (b)

    class class_name<>

    (c)

    class class_name:

    (d)

    class class_name[ ]

  11. Who is called Father of Relational Database from the following?

    (a)

    Chris Date

    (b)

    Hugh Darween

    (c)

    Edgar Frank Codd

    (d)

    Edgar Frank Cadd

  12. Find the odd man out

    (a)

    SQLite

    (b)

    Maria DB

    (c)

    Oracle

    (d)

    Dbase

  13. Expansion of SQL is

    (a)

    Structured Question Language

    (b)

    Selection Query Language

    (c)

    Structured Query Language

    (d)

    Structured Query Language

  14. The term _____ is used to refer to any of the DBMS

    (a)

    Object

    (b)

    Database

    (c)

    Data model

    (d)

    Data mining

  15. Each column in a table represents a ___________

    (a)

    Record

    (b)

    Data

    (c)

    Field

    (d)

    Method

  16. The command to delete a table is

    (a)

    DROP

    (b)

    DELETE

    (c)

    DELETE ALL

    (d)

    ALTER TABLE

  17. Which of the following is not a RDBMS package?

    (a)

    Oracle

    (b)

    Foxpro

    (c)

    DBbase

    (d)

    MySQL

    (e)

    b and c

  18. Which SQL TCL command save a transaction temporarily

    (a)

    Commit

    (b)

    Roll back

    (c)

    Save point

    (d)

    None of these

  19. Which of the following have a special meaning inSQL?

    (a)

    Keywords

    (b)

    Commands

    (c)

    Clause

    (d)

    Arguments

  20. Which keywords are not used in the command used to replace a data value in a database?

    (a)

    UPDATE

    (b)

    SET

    (c)

    WHERE

    (d)

    ADD

  21. Which clause can be used along with GROUP BY clause and SELECT statement to include aggregate function on them?

    (a)

    WHERE

    (b)

    WHERE

    (c)

    HAVING

    (d)

    COMMIT

  22. The _______ keyword defines a range of values the record must fall into make the condition true.

    (a)

    BETWEEN

    (b)

    RANGE

    (c)

    IN

    (d)

    WHERE

  23. Which of the following is a string used to terminate lines produced by writer()method of csv module?

    (a)

    Line Terminator

    (b)

    Enter key

    (c)

    Form feed

    (d)

    Data Terminator

  24. Which of the following is not a mode used while opening a file?

    (a)

    P

    (b)

    W

    (c)

    r

    (d)

    a

  25. The default file open mode is

    (a)

    rt

    (b)

    x

    (c)

    a

    (d)

    r

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