AP Computer Science Exam
Questions And Answers
2025/2026
What advantages do computers have over humans? - ANSWER-Faster, more accurate,
better memory
Many so-called computer errors are caused by: - ANSWER-sloppy data entry
How does Morse Code work? - ANSWER-It uses short and long signals, representing
dots and dashes
How does the binary system used by a computer work? - ANSWER-It uses 1s and 0s,
representing electrical current that is on or off
Which of the following describes ASCII? - ANSWER-It uses 1 byte to store a character
and is used by many programming languages
Which of the following describes Unicode? - ANSWER-It uses 2 bytes to store a
character and is used by Java
How BITs are in a byte? - ANSWER-8
What number system do people in America use? - ANSWER-Base-10 (decimal)
What number system does the computer use to process information? - ANSWER-Base
2 (binary)
What did early computers use to store each bit? - ANSWER-A vacuum tube
Characteristics of early computers - ANSWER-very large, programmed by people
switching wires, used vacuum tubes
Characteristics of modern computers - ANSWER-small enough to fit on a desk,
programmed with languages like Java, use microchips
In computers, the main circuit board with all the primary computer components is called
the - ANSWER-motherboard
Types of computer chips - ANSWER-Ram, Rom, Cpu
Which of the following stores permanent information and is not erased when the
computer is turned off - ANSWER-Rom
,Which of the following stores temporary information and is erased when the computer is
turned off - ANSWER-Ram
Which is of the following is the brains of the computer - ANSWER-Cpu
How many bytes are in a megabyte - ANSWER-1 million
How many bytes are in a terabyte - ANSWER-1 trillion
How many bytes are in a kilobyte - ANSWER-1000
How many bytes are in a gigabyte - ANSWER-1 billion
Information on a disk or tape is stored magnetically by arranging iron oxide which most
people call... - ANSWER-rust
Which of the following stores/retrieves information using laser light - ANSWER-CD-Rom
A _______ is a sequence of instructions, which enables a computer to perform a
desired task - ANSWER-program
What language is understood by the computer - ANSWER-Machine code
Which language is made up of 1s and 0s - ANSWER-Machine code
Which language will you be learning in APCS - ANSWER-Java
Which language was created by Grace Hopper for the business community and the
armed forces - ANSWER-COBOL
Which language was the first successful programming language - ANSWER-FORTRAN
Which language was designed for mathematicians, scientists, and engineers? -
ANSWER-FORTRAN
Which language added OOP to the existing language C? - ANSWER-C++
Which language was developed at Bell Labs as its improved version of B? - ANSWER-
C
Which language is platform independent? - ANSWER-Java
Which language was the first to be used in personal computers? - ANSWER-BASIC
, Which language was designed by Nicholas Wirth specifically for the purpose of teaching
Computer Science? - ANSWER-Pascal
Which of the following translates a program one-line-at-a-time during execution? -
ANSWER-Interpreter
Which of the following translates the entire program first into an executable file before
execution? - ANSWER-Compiler
Most modern languages today use.... - ANSWER-interpreter
Which translators are used by Java - ANSWER-Interpreter, compiler, assembler
Monitors, printers, disk drives, and the computer itself are all examples of - ANSWER-
Hardware
Mas OSX, windows vista, windows 7, and UNIX are all examples of - ANSWER-System
software
Word, powerpoint, and excel are all examples of - ANSWER-Application software
Which of the following is a small network where all of the computers are considered
equal - ANSWER-peer to peer
Which of the following networks has at least one dedicated computer to handle services
like logging on, network printing, and file sharing - ANSWER-client server
Copying a file to a USB jump drive and then handing it to a friend for him to copy to his
computer is an example of - ANSWER-Sneakernet
The connection of all the networks in the world is called the - ANSWER-internet
Advantages of an intranet - ANSWER-more speed, more security, less cost
How have computers changed over the past 70 years - ANSWER-smaller, faster, easier
to use, less expensive
What motivated the creation of the internet - ANSWER-The Department of Defense
during the Cold War
With ______ information it is always possible to make a precise copy of the original -
ANSWER-digital
A programming language is considered ___________ if program source code created
on one type of computer platform can execute on another computer platform without
any difficulty - ANSWER-platform independent
Questions And Answers
2025/2026
What advantages do computers have over humans? - ANSWER-Faster, more accurate,
better memory
Many so-called computer errors are caused by: - ANSWER-sloppy data entry
How does Morse Code work? - ANSWER-It uses short and long signals, representing
dots and dashes
How does the binary system used by a computer work? - ANSWER-It uses 1s and 0s,
representing electrical current that is on or off
Which of the following describes ASCII? - ANSWER-It uses 1 byte to store a character
and is used by many programming languages
Which of the following describes Unicode? - ANSWER-It uses 2 bytes to store a
character and is used by Java
How BITs are in a byte? - ANSWER-8
What number system do people in America use? - ANSWER-Base-10 (decimal)
What number system does the computer use to process information? - ANSWER-Base
2 (binary)
What did early computers use to store each bit? - ANSWER-A vacuum tube
Characteristics of early computers - ANSWER-very large, programmed by people
switching wires, used vacuum tubes
Characteristics of modern computers - ANSWER-small enough to fit on a desk,
programmed with languages like Java, use microchips
In computers, the main circuit board with all the primary computer components is called
the - ANSWER-motherboard
Types of computer chips - ANSWER-Ram, Rom, Cpu
Which of the following stores permanent information and is not erased when the
computer is turned off - ANSWER-Rom
,Which of the following stores temporary information and is erased when the computer is
turned off - ANSWER-Ram
Which is of the following is the brains of the computer - ANSWER-Cpu
How many bytes are in a megabyte - ANSWER-1 million
How many bytes are in a terabyte - ANSWER-1 trillion
How many bytes are in a kilobyte - ANSWER-1000
How many bytes are in a gigabyte - ANSWER-1 billion
Information on a disk or tape is stored magnetically by arranging iron oxide which most
people call... - ANSWER-rust
Which of the following stores/retrieves information using laser light - ANSWER-CD-Rom
A _______ is a sequence of instructions, which enables a computer to perform a
desired task - ANSWER-program
What language is understood by the computer - ANSWER-Machine code
Which language is made up of 1s and 0s - ANSWER-Machine code
Which language will you be learning in APCS - ANSWER-Java
Which language was created by Grace Hopper for the business community and the
armed forces - ANSWER-COBOL
Which language was the first successful programming language - ANSWER-FORTRAN
Which language was designed for mathematicians, scientists, and engineers? -
ANSWER-FORTRAN
Which language added OOP to the existing language C? - ANSWER-C++
Which language was developed at Bell Labs as its improved version of B? - ANSWER-
C
Which language is platform independent? - ANSWER-Java
Which language was the first to be used in personal computers? - ANSWER-BASIC
, Which language was designed by Nicholas Wirth specifically for the purpose of teaching
Computer Science? - ANSWER-Pascal
Which of the following translates a program one-line-at-a-time during execution? -
ANSWER-Interpreter
Which of the following translates the entire program first into an executable file before
execution? - ANSWER-Compiler
Most modern languages today use.... - ANSWER-interpreter
Which translators are used by Java - ANSWER-Interpreter, compiler, assembler
Monitors, printers, disk drives, and the computer itself are all examples of - ANSWER-
Hardware
Mas OSX, windows vista, windows 7, and UNIX are all examples of - ANSWER-System
software
Word, powerpoint, and excel are all examples of - ANSWER-Application software
Which of the following is a small network where all of the computers are considered
equal - ANSWER-peer to peer
Which of the following networks has at least one dedicated computer to handle services
like logging on, network printing, and file sharing - ANSWER-client server
Copying a file to a USB jump drive and then handing it to a friend for him to copy to his
computer is an example of - ANSWER-Sneakernet
The connection of all the networks in the world is called the - ANSWER-internet
Advantages of an intranet - ANSWER-more speed, more security, less cost
How have computers changed over the past 70 years - ANSWER-smaller, faster, easier
to use, less expensive
What motivated the creation of the internet - ANSWER-The Department of Defense
during the Cold War
With ______ information it is always possible to make a precise copy of the original -
ANSWER-digital
A programming language is considered ___________ if program source code created
on one type of computer platform can execute on another computer platform without
any difficulty - ANSWER-platform independent
