Computer Science for IGCSE & O level - Programming (Section 13)
1
Which of the following are typical components of a file handling process?
Одговорити
A
B
C
2
What does the `import java.io.File` statement do in Java?
Одговорити
(A)
Imports the file class
3
What happens if you attempt to read from a file that hasn't been opened first?
Одговорити
(C)
An error will likely occur.
4
Based on the information given, a one-dimensional array can also be referred to as:
Одговорити
(B)
A list
5
Which operator is typically used to represent 'not equal to' in most programming languages?
Одговорити
(A)
!=
6
Which of the following components are crucial for the file handling procedure?
Одговорити
B
C
D
7
Which of the following statements is true about file storage?
Одговорити
B
C
D
8
Which of the following best describes a global variable?
Одговорити
(B)
It can be used by any part of the program.
9
What does the `READFILE` statement in the pseudocode signify in the context of file handling?
Одговорити
(C)
Reads a line from the file.
10
Which of the following are common data types used in programming?
Одговорити
A
B
C
D
11
What does DRY stand for in programming principles?
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(A)
Don't Repeat Yourself
12
Which of the following is a purpose of comments in the program?
Одговорити
(B)
They help in code readability.
13
In the pseudocode, what does the line `AVERAGE = TOTAL / COUNTER` calculate?
Одговорити
(C)
The average of the marks.
14
What is the correct keyword for declaring a constant?
Одговорити
(C)
CONST
15
What does the program compute after the completion of the outer loop? (FOR Student = 1 TO NumOfStudents)
Одговорити
(D)
All of the above
16
Which of the following are important aspects of code readability?
Одговорити
A
B
C
17
Which logical operator would result in TRUE only if *both* operands are TRUE?
Одговорити
(B)
AND
18
If the value of 'age' is 10 and the following code executes, what will be printed?
```
IF age >= 17
THEN
Print "You are an adult"
ELSE
Print "You are a child"
ENDIF
```
Одговорити
(A)
You are a child
19
What is the result if a CASE statement has no matching case, and no default (or ELSE) clause?
Одговорити
(C)
The program continues execution after the CASE block.
20
Which of the following is considered a control structure?
Одговорити
(C)
Loops
21
What does the `Uppercase` method usually do in string manipulation?
Одговорити
(C)
Convert a string to uppercase.
22
What does the term 'scope' refer to in programming?
Одговорити
(C)
The part of the program where a variable is accessible.
23
What is typically required before writing to a file in most programming languages?
Одговорити
(B)
Opening the file in write mode
24
What is the purpose of comments in programming?
Одговорити
(B)
To improve code readability and explain the code.
25
In the pseudocode example, the variable 'COUNTER' is incremented in each iteration. What is the role of COUNTER?
Одговорити
(C)
To count the number of marks entered.
26
What will be calculated by the inner loop, for each student, during the nested loop structure?
Одговорити
(C)
The sum of all the marks obtained in all subjects.
27
What would be the appropriate data type for the variable used to store a student's name?
Одговорити
(C)
STRING
28
What is one of the first steps involved in writing to a file?
Одговорити
(C)
Opening the file.
29
What does the 'a' mode stand for when opening a file?
Одговорити
(C)
Append mode
30
What is the purpose of comments in a program?
Одговорити
(C)
To explain the code to humans.
31
What is the purpose of an algorithm?
Одговорити
(B)
To provide a set of instructions to solve a problem.
32
What is a procedure also known as?
Одговорити
(C)
A subroutine
33
What operation is performed by the statement `myFile.write('Hello')` in a Python example?
Одговорити
(B)
Writing 'Hello' to the file
34
What does the term 'index' refer to within an array?
Одговорити
(C)
The position of an element within the array
35
What does the `open()` function typically return when successful?
Одговорити
(C)
A file object
36
What does `myFile.readline()` do in Python?
Одговорити
(B)
Reads a line from the file
37
What is the function of the `Lowercase` method in string handling?
Одговорити
(C)
To convert a string to lowercase.
38
In the provided code, what is the purpose of initializing `ClassHigh` to 0?
Одговорити
(C)
To set the starting value for comparing with student marks.
39
What does a "For" loop usually require?
Одговорити
(A)
A start value, an end value, and an increment/decrement.
40
What is the purpose of `Input` in the pseudo code?
Одговорити
(B)
Takes the input from the user.
41
Which programming construct allows a program to repeat a block of code until a certain condition is met?
Одговорити
(B)
Iteration statement
42
Which of the following is NOT a typical action when working with a file?
Одговорити
(D)
Sorting
43
In a nested IF-ELSE structure, how are the inner blocks of code related to the outer structure?
Одговорити
(B)
The execution of the inner block depends on the condition of the outer block.
44
Which of the following are good practices when working with files?
Одговорити
A
C
45
What is the advantage of using meaningful identifiers for variables?
Одговорити
(B)
Improves code readability and understanding.
46
Which type of loop is characterized by the condition being evaluated *after* the loop body executes?
Одговорити
(B)
Post-condition loop
47
Which part of the program is executed based on the value of 'answer' in the case statement?
Одговорити
(B)
The code block associated with the matching case.
48
What does the '%' operator represent in many programming languages?
Одговорити
(C)
Modulo (remainder)
49
What is the primary benefit of the 'modular' approach to programming (using procedures and functions)?
Одговорити
(D)
It enhances reusability and reduces code duplication.
50
Which is a characteristic of a post-condition loop?
