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D. Assertion and Reasoning based questions.
The following questions consist of two statements – Assertion (A) and Reason (R). Answer these questions by selecting the
appropriate option given below:
a. Both A and R are true, and R is the correct explanation of A.
b. Both A and R are true, but R is not the correct explanation of A.
c. A is true, but R is false.
d. A is false, but R is true.
1. Assertion (A): ASCII stands for American Standard Code for Information Interchange and is a character encoding standard for text
files in computers.
Reason (R): It is made of 512 symbols and consists all letters used in all vernacular languages.
2. Assertion (A): The escape sequence '\t' in Java is used to represent a horizontal tab.
Reason (R): When the '\n' escape sequence is encountered within a string literal, it instructs the compiler to insert a newline
character at that position. This causes the subsequent characters to be printed on a new line in the output.
Previous Years' Questions
1. Identify the type of operator &&: [2023]
a. ternary b. unary
c. logical d. relational
Ans. c.
2. A data type which contains integer as well as fractional part and occupies 32 bits space is: [2022]
a. float b. char
c. double d. byte
Ans. a.
3. Which of the following keyword is used to create symbolic constants in Java? [2022]
a. final b. Final
c. Constant d. Const
Ans. a.
4. State whether the statement is True or False: [2022]
char is a non - primitive data type.
a. True b. False
Ans. b.
5. Give the output of the following: [2022]
int x=2, y=4, z= 1;
int result = (++z)+y+(++x)+(z++);
a. 11 b. 12
c. 10 d. 9
Ans. a.
6. Write the memory capacity (storage size) of short and float data types in bytes. [2019]
Ans. The memory capacity of short is 2 bytes and float 4 bytes.
7. Identify and name the following tokens:
a. public b. 'a'
c. == d. {} [2019]
Ans. a. public : Keyword b. 'a' : Character Literal
c. == : Operator d. {} : Punctuator
8. State the data type and value of res after the following is executed:
char ch = '9';
res = Character.isDigit(ch); [2019]
Ans. The data type is boolean and the value of res is true.
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Values and Data Types 53

