Java MCQ Quiz (Part - 3) | infoStud blogs

Following quiz provides Multiple Choice Questions (MCQs) related to Core Java. You will have to read all the given answers and click over the correct answer. Correct answer will be highleted with green colour and wrong answer will be highleted with red colour.

1. What is a data type ?

1. A special scheme to represent values ??in bit patterns.
2. A portion of the main memory used to store data.
3. The calculator of the CPU.
4. The collection of variables that a program uses.

2. How many bit patterns can a single bit represent?

1. 1
2. 4
3. 2
4. 8th

3. What is a primitive data type in Java ?

1.A method to represent values ??that are so useful that they are an integral part of the language.
2. An easy way to represent numbers.
3. The part of Java that matches the older programming languages.
4. A data type that can not be used as part of an object.

4. Does every variable in Java need a data type?

1. No – a data type is optional.
2. Yes – all variables are of the same data type.
3. Yes – every variable must be declared with its data type.
4. No – only numeric variables need a data type.

5. What is NOT a name of a primitive data type in Java?

1. string
2. stand-in
3. float
4. int

6. Is the value ONE always represented by the same bit sequence?

1.Yes – it is always stored in one bit.
2. Yes – there is only one “one”, so there is only one bit sequence.
3. No – “one” can be represented by different integer or floating point data types.
4. No – the bit pattern changes every time the program starts.

7.Suppose a particular data item does not use a primitive data type. What does it have to be?

1. An object.
2. A number.
3. A literal.
4. A Boolean element.

8. How many digits is the decimal precision of the following number: +1200004.5

1. 8th
2. 5
3. 4
4. Over one million

9. Can chardata be stored in the main memory of the computer?

1. Yes – a primitive data type is used to save it.
2. No – computers can only save numbers.
3. No -; the computer can only save patterns.
4. Yes – chardata is stored in a special memory.

10. Which of the following is a reserved word ?

1.grandtotal
2. up
3. boolean
4. grandtotal

Also Attempt

• Java MCQ Quiz (Part - 1)
• Java MCQ Quiz (Part - 2)
• Java MCQ Quiz (Part - 4)
• Java MCQ Quiz (Part - 5)
• Java MCQ Quiz (Part - 6)
• Java MCQ Quiz (Part - 7)
• Java MCQ Quiz (Part - 8)
• Java MCQ Quiz (Part - 9)