DEV Community

MANOJ K
MANOJ K

Posted on

Day at payilagam Java test

Today my trainer conducted an MCQ test and sent us a question paper. After writing the answers, I scored 15 out of 25.

  1. What is the range of short data type in Java?
    a) -128 to 127
    b) -32768 to 32767
    c) -2147483648 to 2147483647
    d) None of the mentioned

  2. What is the range of byte data type in Java?
    a) -128 to 127
    b) -32768 to 32767
    c) -2147483648 to 2147483647
    d) None of the mentioned

  3. Which of the following are legal lines of Java code?

   1. int w = (int)888.8;
   2. byte x = (byte)100L;
   3. long y = (byte)100;
   4. byte z = (byte)100L;

a) 1 and 2
b) 2 and 3
c) 3 and 4
d) All statements are correct

  1. Which of the following is not true about Java?
    a) Object oriented language
    b) High level language
    c) 4th generation language
    d) Computer language

  2. Which of these coding types is used for data type characters in Java?
    a) ASCII
    b) ISO-LATIN-1
    c) UNICODE
    d) None of the mentioned

  3. What is the default value of boolean literal?
    a) true
    b) 1
    c) 0
    d) false

  4. Which of these occupy first 0 to 127 in Unicode character set used for characters in Java?
    a) ASCII
    b) ISO-LATIN-1
    c) None of the mentioned
    d) ASCII and ISO-LATIN1

  5. Which one is a valid declaration of a boolean?
    a) boolean b1 = 1;
    b) boolean b2 = ‘false’;
    c) boolean b3 = false;
    d) boolean b4 = ‘true’;

  6. Which of these is long data type literal?
    a) 9967124623
    b) ABCDEFG
    c) abcdefg
    d) 9967124623L

  7. Which of these can be returned by the operator &&?
    a) Integer
    b) Boolean
    c) Character
    d) String

  8. Long literal should be suffixed with ?
    a) L or l
    b) F or f
    c) D or d
    d) I or i

  9. Floating point literal should be suffixed with?
    a) L or l
    b) F or f
    c) D or d
    d) I or i

  10. Which of these cannot be used for a variable name in Java?
    a) identifier
    b) keyword
    c) identifier & keyword
    d) none of the mentioned

  11. JDK is platform dependent ?
    a) true
    b) false

  12. JRM is inside JVM ?
    a) true
    b) false

  13. Java is case in-sensitive language ?
    a) true
    b) false

  14. Python is derived from java ?
    a) true
    b) false

  15. Java is 25 times faster than Python in 1995 ?
    a) true
    b) false

19.Java is derived from C++ ?
a) true
b) false

  1. What is type conversions in Java ? a) Both type casting and type promotion b) Type casting only c) Type promotion only d) None of the above
  • Match the following
  1. James Gosling - a) Write Once Run Anywhere
  2. Cup and saucer - b) 23-May-1995
  3. Java slogan - c) Father of Java
  4. Java DOB - d) Oracle
  5. Java current owner - e) Symbol of Java

Answer ****

1)-32768 to 32767

2)-128 to 127

3)All statements are correc
t

4)4th generation language

5)UNICODE

6)false

7)ASCII

8)boolean b3 = false;

9)9967124623L

10)Boolean

11)L or l

12)F or f

13)keyword

14)true (JDK tools are platform dependent, but Java itself is platform independent)

15)false (JRE contains JVM, not inside JVM)

16)false (Java is case sensitive)
17)false

18)true (Java was designed to be much faster than interpreted languages like Python)

19)true (Syntax influenced by C++)

20)Both type casting and type promotion

21)James Gosling → c) Father of Java

22)Cup and saucer → e) Symbol of Java

23)Java slogan → a) Write Once Run Anywhere

24)Java DOB → b) 23-May-1995

25)Java current owner → d) Oracle

Top comments (0)