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This set of Web Technologies Multiple Choice Questions & Answers (MCQs) focuses on JAVA Script

Q1 | Tags and text that are not directly displayed on the page are written in___________section.
  • web browser
  • title
  • empty
  • head
Q2 | Some tags enclose the text. Those tags are known as ___________
  • single tag
  • paired tag
  • empty
  • head
Q3 | The tag is used to _________the text or sentence.
  • single tag
  • paired tag
  • strikeout
  • head
Q4 | The tag is used to display ________ text form a document
  • single tag
  • paired tag
  • strikeout
  • deleted
Q5 | _________ is used to give additional information.
  • title tag
  • paired tag
  • strikeout
  • deleted
Q6 | What is the range of short data type in Java script ?
  • -128 to 127
  • -32768 to 32767
  • -2147483648 to 2147483647
  • none of the mentioned
Q7 | What is the range of byte data type in Java script?
  • -128 to 127
  • -32768 to 32767
  • -2147483648 to 2147483647
  • none of the mentioned
Q8 | An expression involving byte, int, and literal numbers is promoted towhich of these?
  • int
  • long
  • byte
  • float
Q9 | What is the numerical range of a char data type in Java script?
  • -128 to 127
  • 0 to 256
  • 0 to 32767
  • 0 to 65535
Q10 | Which of these coding types is used for data type characters in Java script?
  • ascii
  • iso-latin-1
  • unicode
  • none of the mentioned
Q11 | Which one is a valid declaration of a Boolean?
  • boolean b1 = 1;
  • boolean b2 = ‘false’;
  • boolean b3 = false;
  • boolean b4 = ‘true’
Q12 | Which of these operators is used to allocate memory to array variable inJava script?
  • malloc
  • alloc
  • new
  • new malloc
Q13 | Which of these is an incorrect array declaration?
  • intarr[] = new int[5]
  • int [] arr = new int[5]
  • intarr[] = new int[5]
  • intarr[] = int [5] new
Q14 | Which of these is necessary to specify at time of array initialization?
  • row
  • column
  • both row and column
  • none of the mentioned
Q15 | Which of the following can be operands of arithmetic operators?
  • numeric
  • boolean
  • characters
  • both numeric & characters
Q16 | Modulus operator, %, can be applied to which of these?
  • integers
  • floating – point numbers
  • both integers and floating – point numbers
  • none of the mentioned
Q17 | Which operator is used to invert all the digits in a binary representation ofa number?
  • ~
  • <<<
  • >>>
  • ^
Q18 | On applying Left shift operator, <<, on integer bits are lost one they areshifted past which position bit?
  • 1
  • 32
  • 33
  • 31
Q19 | Which of these operators can skip evaluating right hand operand?
  • !
  • none of the mentioned
  • &
  • &&
Q20 | Which of these have highest precedence?
  • ()
  • ++
  • *
  • >>
Q21 | Which of these statements are incorrect?
  • equal to operator has least precedence
  • brackets () have highest precedence
  • division operator, /, has higher precedence than multiplication operator
  • addition operator, +, and subtraction operator have equal precedence
Q22 | Which of these selection statements test only for equality?
  • if
  • switch
  • if & switch
  • none of the mentioned
Q23 | . Which of these are selection statements in Java script?
  • if()
  • for()
  • continue
  • break
Q24 | Which of the following is not a valid jump statement?
  • break
  • goto
  • continue
  • return
Q25 | _______is the measured as the amount of data that can be transferred from onepoint to another point within a specific amount of time.
  • http
  • bandwidth
  • webpage
  • dream viewer