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