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

12th Standard

Reg.No. :
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Computer Science

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

25 x 1 = 25
1. Which of the following carries out the instructions defined in the interface?

(a)

Operating System

(b)

Compiler

(c)

Implementation

(d)

Interpreter

2. A_________ combines the external interface with an implementation of the interface

(a)

parameter without type

(b)

class declaration

(c)

function definition

(d)

parameter with type

3. Which of the following is a compound structure?

(a)

Pair

(b)

Triplet

(c)

single

(d)

4. How many ways to implement an ADT?

(a)

Only one

(b)

Two

(c)

Three

(d)

Many

5. How many ways are there to represent pair datatypet?

(a)

2

(b)

4

(c)

3

(d)

5

6. Which of the following security technique that regulates who canuse resources in a computing environment?

(a)

(b)

Authentication

(c)

Access control

(d)

Certification

7. Which of the following keeps track of all these mappings with namespaces?

(a)

Programming languages

(b)

Application software

(c)

System software

(d)

MySQL

8. Which of the following keywords are not used to control the access to class members?

(a)

Public

(b)

Protected

(c)

Public

(d)

Global

9. The Θ notation in asymptotic evaluation represents

(a)

Base case

(b)

Average case

(c)

Worst case

(d)

NULL case

10. An algorithm that yields expected output for a valid input is called an

(a)

Algorithmic Solution

(b)

Algorithmic Structure

(c)

Algorithmic Strategy

(d)

Algorithmic Procedure

11. Which of the following notation is often used to describe the worst-case fan algorithm?

(a)

Big $\Omega$

(b)

Big $\mu$

(c)

Big O

(d)

Big $\alpha$

12. Which of the following optimization technique used in dynamic algorithms

(a)

Memorization

(b)

Composition

(c)

Specification

(d)

Decomposition

13. ________is used to describe the upper bound of a asymptotic function.

(a)

Big $\mu$

(b)

Big O

(c)

Big $\Omega$

(d)

Big $\beta$

14. Which operator is also called as Comparative operator?

(a)

Arithmetic

(b)

Relational

(c)

Logical

(d)

Assignment

15. Which of the following defines the Pythons interactive mode of programming?

(a)

>>>

(b)

<<<

(c)

>>

(d)

<<

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

(a)

False

(b)

True

(c)

0

(d)

no output

17. Which of the following is not a type of branching statements?

(a)

if

(b)

if-else

(c)

if-elif

(d)

while

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

(a)

Required

(b)

Keyword

(c)

Default

(d)

Variable-length

19. Which of the following formatting character is used to print exponential notation in upper case?

(a)

%e

(b)

%E

(c)

%g

(d)

%n

20. What is the use of type() function in python?

(a)

To create a Tuple

(b)

To know the type of an element in tuple.

(c)

To know the data type of python object

(d)

To create a list.

21. Which of the following class declaration is correct?

(a)

class class_name

(b)

class class_name<>

(c)

class class_name:

(d)

class class_name[ ]

22. What symbol is used for SELECT statement?

(a)

σ

(b)

Π

(c)

X

(d)

Ω

23. The command to delete a table is

(a)

DROP

(b)

DELETE

(c)

DELETE ALL

(d)

ALTER TABLE

24. Making some changes in the data of the existing file or adding more data is called

(a)

Editing

(b)

Appending

(c)

Modification

(d)

Alteration

25. Which of the following can be used for processing text, numbers, images, and scientific data?

(a)

HTML

(b)

C

(c)

C++

(d)

PYTHON