MCQOPTIONS
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MCQOPTIONS
This section includes 104 Mcqs, each offering curated multiple-choice questions to sharpen your Data Mining knowledge and support exam preparation. Choose a topic below to get started.
| 51. |
Built-in multiway decision statement in Java is known as |
| A. | Switch |
| B. | Oprator |
| C. | Break |
| D. | Continue |
| Answer» B. Oprator | |
| 52. |
One if or else if statement inside another if or else if statement is |
| A. | if statement |
| B. | if-else statement |
| C. | if-else-if ladder |
| D. | nested if statement |
| Answer» E. | |
| 53. |
Which one will returns the absolute value of a |
| A. | rint(a) |
| B. | log(a) |
| C. | abs(a) |
| D. | exp(a) |
| Answer» D. exp(a) | |
| 54. |
What is the action of rint() in Java |
| A. | Returns the absolute value of the argument |
| B. | Returns the smallest of the two arguments |
| C. | Returns the double value that is closest in value to the argument |
| D. | Returns the largest integer that is less than or equal to the argument |
| Answer» D. Returns the largest integer that is less than or equal to the argument | |
| 55. |
Which one returns the smallest whole number greater than or equal to x is |
| A. | rint(x) |
| B. | sqrt(x) |
| C. | log(x) |
| D. | ceil(x) |
| Answer» E. | |
| 56. |
Unary minus ‘-‘ has associativity from |
| A. | Right to left |
| B. | Left to right |
| C. | Not associative |
| D. | None of the above |
| Answer» B. Left to right | |
| 57. |
When a=9, b=12, c=3 then output of following statement is: x = a-b/3+c*2-1 |
| A. | 8 |
| B. | 10 |
| C. | 12 |
| D. | 15 |
| Answer» C. 12 | |
| 58. |
Which of the following operator has higher precedence |
| A. | + |
| B. | - |
| C. | * |
| D. | || |
| Answer» D. || | |
| 59. |
The operator sign ‘|’ is used for Bitwise __ |
| A. | AND |
| B. | OR |
| C. | XOR |
| D. | Complement |
| Answer» C. XOR | |
| 60. |
Java has a distinction of supporting special operators known as |
| A. | Bitwise operators |
| B. | Unary Operators |
| C. | Conditional Operators |
| D. | Type Comparison Operator |
| Answer» B. Unary Operators | |
| 61. |
Arithmetic operators in java can not be applied to |
| A. | Long |
| B. | Char |
| C. | Float |
| D. | Boolean |
| Answer» E. | |
| 62. |
Which of the variables serve as symbolic constants |
| A. | Boolean |
| B. | Char |
| C. | Float |
| D. | Final |
| Answer» E. | |
| 63. |
What are typically used to store information in Java |
| A. | Variables |
| B. | Constant |
| C. | Conversion |
| D. | None of the above |
| Answer» B. Constant | |
| 64. |
What is the default value of boolean in java |
| A. | True |
| B. | False |
| C. | Null |
| D. | 0.0d |
| Answer» C. Null | |
| 65. |
What is the default value of int |
| A. | 0.0F |
| B. | 0L |
| C. | 0 |
| D. | 1 |
| Answer» D. 1 | |
| 66. |
Assigning a larger type to a smaller one is known as __ conversion in Java |
| A. | Identity |
| B. | Narrowing |
| C. | Boxing |
| D. | Capture |
| Answer» C. Boxing | |
| 67. |
Which type of conversions do not lose information about the magnitude of a value |
| A. | String |
| B. | Capture |
| C. | Narrowing |
| D. | Widening |
| Answer» E. | |
| 68. |
The syntax "type variable = (type) variable2" is used for |
| A. | Type casting |
| B. | Type compression |
| C. | Type inheritance |
| D. | Type correction |
| Answer» B. Type compression | |
| 69. |
Assigning a value of one type to a variable of another type is known as |
| A. | Type compression |
| B. | Type casting |
| C. | Type correction |
| D. | Type inheritance |
| Answer» C. Type correction | |
| 70. |
Which of the following is derived data type |
| A. | Floating point |
| B. | Interface |
| C. | Character |
| D. | Boolean |
| Answer» C. Character | |
| 71. |
For logical value, which primitive type is used |
| A. | Float |
| B. | Long |
| C. | Double |
| D. | Boolean |
| Answer» E. | |
| 72. |
Which of the following is intrinsic data type |
| A. | Classes |
| B. | Arrays |
| C. | Integer |
| D. | Interface |
| Answer» D. Interface | |
| 73. |
Approximate range of double is |
| A. | 4.9e–324 to 1.8e+308 |
| B. | 1.4e-045 to 3.4e+038 |
| C. | -2147483648 to + 2147483647 |
| D. | 0 to 65535 |
| Answer» B. 1.4e-045 to 3.4e+038 | |
| 74. |
For storing a value, double uses |
| A. | 24 bit |
| B. | 32 bit |
| C. | 64 bit |
| D. | 128 bit |
| Answer» D. 128 bit | |
| 75. |
The range of floating point is |
| A. | -128 to +127 |
| B. | 1.4e–045 to 3.4e+038 |
| C. | -2147483648 to + 2147483647 |
| D. | -32768 to + 32767 |
| Answer» C. -2147483648 to + 2147483647 | |
| 76. |
Float has __ bits of storage |
| A. | 16 |
| B. | 32 |
| C. | 64 |
| D. | 128 |
| Answer» C. 64 | |
| 77. |
A Signed 64-bit type is named as |
| A. | Byte |
| B. | Short |
| C. | Int |
| D. | Long |
| Answer» E. | |
| 78. |
The range of Short is |
| A. | –27,568 to 27,567 |
| B. | –30,453 to 30,453 |
| C. | –32,768 to 32,767 |
| D. | –34,563 to 34,563 |
| Answer» D. –34,563 to 34,563 | |
| 79. |
Which one loop is also known as Entry Control loop |
| A. | Infinite loop |
| B. | Do while loop |
| C. | For loop |
| D. | While loop |
| Answer» E. | |
| 80. |
Exit for loop is an example of |
| A. | Do while loop |
| B. | While loop |
| C. | For loop |
| D. | None of the above |
| Answer» B. While loop | |
| 81. |
A loop in java ends with |
| A. | Colon |
| B. | Semicolon |
| C. | Dot |
| D. | Slash |
| Answer» C. Dot | |
| 82. |
Which one is a correct if statement |
| A. | if{condition} (statement) |
| B. | if condition {statement} |
| C. | if(condition) {statement} |
| D. | if{condition} statement |
| Answer» D. if{condition} statement | |
| 83. |
The protected access modifier can be applied on |
| A. | Members |
| B. | Class |
| C. | Method |
| D. | Interface |
| Answer» B. Class | |
| 84. |
The protected access modifier is accessible within package and outside the package but through __ only |
| A. | Encasulation |
| B. | Abstraction |
| C. | Inheritance |
| D. | Polymorphism |
| Answer» D. Polymorphism | |
| 85. |
Access modifier which is accessible only within class is called |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Public |
| Answer» B. Default | |
| 86. |
Which one is not a java access modifiers |
| A. | Private |
| B. | Default |
| C. | Protected |
| D. | Abstract |
| Answer» E. | |
| 87. |
Which of the following is a single line comment syntax |
| A. | / comment |
| B. | // comment |
| C. | /* comment */ |
| D. | //* comment */ |
| Answer» C. /* comment */ | |
| 88. |
Which of the following is a multi line comment syntax |
| A. | begin with / and end with / |
| B. | begin with /* and end with */ |
| C. | begin with # and end with # |
| D. | begin with /@ and end with @/ |
| Answer» C. begin with # and end with # | |
| 89. |
HotJava Browser was developed in the year |
| A. | 1990 |
| B. | 1992 |
| C. | 1995 |
| D. | 1996 |
| Answer» D. 1996 | |
| 90. |
Which one is not a Java Comment type |
| A. | Single line comment |
| B. | Two line comment |
| C. | Multi line comment |
| D. | Documentation comment |
| Answer» C. Multi line comment | |
| 91. |
Which one was the first browser to support Java applets |
| A. | Internet Explorer |
| B. | Safari |
| C. | HotJava |
| D. | NetJava |
| Answer» D. NetJava | |
| 92. |
Static binding calls at |
| A. | Start time |
| B. | Compile time |
| C. | Process time |
| D. | Execution time |
| Answer» C. Process time | |
| 93. |
Dynamic binding calls at |
| A. | Start time |
| B. | Compile time |
| C. | Run time |
| D. | Execution time |
| Answer» D. Execution time | |
| 94. |
Name of the process by which objects of one class acquire the properties of objects of another is called |
| A. | Information Hiding |
| B. | Inheritance |
| C. | Polymorphism |
| D. | Encapsulation |
| Answer» C. Polymorphism | |
| 95. |
The act of representing essential features without including the background details or explanations is called |
| A. | Abstraction |
| B. | Polymorphism |
| C. | Encapsulation |
| D. | Inheritance |
| Answer» B. Polymorphism | |
| 96. |
Java is a __ |
| A. | Logic-based language |
| B. | Stack-based language |
| C. | Data-structured language |
| D. | Object oriented programming language |
| Answer» E. | |
| 97. |
Which one is commonly used to extend the applications hosted by web servers |
| A. | JSP |
| B. | IDE |
| C. | Applet |
| D. | Servlet |
| Answer» E. | |
| 98. |
A highly optimized set of instructions designed to be executed by the Java run-time system, is called |
| A. | Objectcode |
| B. | Bitcode |
| C. | Bytecode |
| D. | Floatcode |
| Answer» D. Floatcode | |
| 99. |
Java is a |
| A. | Static language |
| B. | Dynamic language |
| C. | Assembly language |
| D. | Binary language |
| Answer» C. Assembly language | |
| 100. |
A special kind of Java program that is designed to be transmitted over the Internet and automatically executed by a Java-compatible web browser is |
| A. | Servlets |
| B. | JSP |
| C. | Applet |
| D. | Bytecode |
| Answer» D. Bytecode | |