Unit 1 + 2 Quiz

Question 1

______ is the physical aspect of the computer that can be seen.

Answer 1

Hardware

Question 2

_______ is the brain of the computer.

Answer 2

CPU (Central Processing Unit)

Question 3

The speed of the CPU may be measured in ________.

Answer 3

megahertz (mHz)

Question 4

Why do computers use zeroes and ones?

Answer 4

combinations of zeroes and ones can represent any numbers and characters.

Question 5

One byte has ____ bits.

Answer 5

8

Question 6

Which of the following are not permanent storage devices?

Answer 6

Volatile memory / main memory

Question 7

_______ is a device to connect a computer to a local area network (LAN)

Answer 7

NIC (network interface card)

Question 8

_______ are instructions to the computer.

Answer 8

Programs

Question 9

Computers can execute the code in _________.

Answer 9

machine language

Question 10

________ translates high-level language programs into machine language programs.

Answer 10

A compiler

Question 11

_________ is an operating system.

Answer 11

Windows/MacOSX/Linux

Question 12

________ is a program that runs on a computer to manage and control a computer’s activities.

Answer 12

Operating system

Question 13

Java was developed by ___________.

Answer 13

Sun Microsystems

Question 14

________ contains predefined classes and interfaces for developing Java programs.

Answer 14

Java API

Question 15

________ is a technical definition of the language that includes the syntax and semantics of the language.

Answer 15

Java Language Specification

Question 16

________ consists of a set of separate programs for developing and testing Java programs, invoked from the command line

Answer 16

Java JDK

Question 17

_________ provides an integrated development environment for building, debugging, and online help with a GUI.

Answer 17

Java IDE

Question 18

Main method header is ________

Answer 18

public static void main(String[] args)

Question 19

Statements must ________.

Answer 19

end with a semicolon (;)

Question 20

What will display “Welcome to Java” on the console?

Answer 20

System.out.println(“Welcome to Java”);

Question 21

Java compiler translates Java source code into _________.

Answer 21

Java Bytecode

Question 22

_________ is a software that interprets Java bytecode.

Answer 22

JVM

Question 23

The extension name of a Java bytecode file is ______.

Answer 23

.class

Question 24

The extension name of a Java source code file is __________.

Answer 24

.java

Question 25

Programming style is important, because ______________.

Answer 25

good programming style makes a program more readable

Question 26

If a program compiles fine, but it produces incorrect result, then the program suffers _________

Answer 26

a logic error

Question 27

If you forget to put a closing quotation mark on a string, what kind of error will be raised?

Answer 27

compiler error

Question 28

_______ is the code with natural language mixed with Java code.

Answer 28

Pseudocode