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CSCI 1301 Exam 1 With Questions And 100% Correct Answers
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CSCI 1301 Exam 1 With Questions And100% Correct Answers
Java does not compile directly to machine code. What then? - ANSWER The Java
programs are compiled into bytecode
What do we need in order to run a Java byte code program on a given computer? -
ANSWER We must have a suitable Java virtual machine, JVM, installed
How does the JVM make Java able to run on many machines? - ANSWER The JVM
translates the byte code into the local machine of the computer. Since JVMs have been
developed for many different types of computers, and each VM can run the same byte
code, the byte code program is called architecture neutral
Which of the following provides information about the space availability to store our
data? - ANSWER Secondary Memory
Which of the following provides information about space availability to store currently
executing programs? - ANSWER Main Memory
Why does the o/s waste the time transferring a program from hard drive to RAM to run?
Why not it just keep it in the hard drive and get rid of RAM completely? - ANSWER
Because Secondary memory is slow
What type of error (Syntax, Runtime, Logical) is easiest to fix? - ANSWER Syntax
because the Java program won't run at all because of syntactical errors
Which type of error is most difficult to get rid of? - ANSWER Logical because the Java
program will run as if everything was fine but the output will not be what was anticipated
, How many different numbers can you represent with a 4-bit number? - ANSWER 16
How many different numbers can you represent with a 4-byte number? - ANSWER 2^32
or 4294967296
Give a list of the 8 primitive data types available in Java. - ANSWER Byte, short, int, long,
float, double, char, and boolean
How many bytes are used to store a boolean value? - ANSWER 1 byte
How many bytes are used to store a byte value? - ANSWER 1 byte
How many bytes are used to store a short value? - ANSWER 2 bytes
How many bytes does it take to store a char value? - ANSWER 2 bytes
How many bytes does it take to store a int value? - ANSWER 4 bytes
How many bytes does it take to store a float value? - ANSWER 4 bytes
How many bytes does it take to store a long value? - ANSWER 8 bytes
How many bytes does it take to store a double value? - ANSWER 8 bytes
If s ant t are both variables for primitive data types such as int what sorts of things do
the variables actually store? - ANSWER s and t would both hold binary representations
of the values. E.g., If s is assigned the value 10, then it will hold a binary representation
of 10.
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