15 Questions
What is the function of the central processing unit (CPU)?
Manipulating information
Which component of a computer is considered the brain of the system?
Central processing unit (CPU)
What does the CPU measure in terms of speed?
Pulses per second
Which term refers to the ability of a computer to store, retrieve, and process data?
Memory
What device retrieves instructions from memory and executes them?
Central processing unit (CPU)
What is the purpose of declaring a variable with a specific data type?
To restrict the type of values that can be stored in the variable
What is the significance of initializing a variable before use?
It ensures that the variable has a starting value
Which statement accurately describes the concept of a variable in programming?
A variable is a reserved area in memory that can hold a value of a specific data type
What is the purpose of casting the value of one type to another type in programming?
To convert the value to a different data type without losing precision
What does it mean when a variable is said to be 'mutable'?
The variable's value can be changed after it has been assigned
Which of the following is not a relational operator in Java?
!=
What is the result of the comparison (10 >= 10) in Java?
true
Which logical operator is used to combine two conditions such that both conditions must be true for the overall expression to be true?
&&
What does the following expression evaluate to in Java: (5 < 3 && 2 > 1)?
false
What is the purpose of the switch statement in Java?
To implement multi-way selection control based on the value of an expression
This quiz covers fundamental concepts of computer basics, operating systems, the Java programming language, writing simple Java programs, and displaying output on the console. It also includes basic syntax of a Java program.
Make Your Own Quizzes and Flashcards
Convert your notes into interactive study material.
Get started for free
