Functions MCQ

Test your knowledge with important Functions MCQ and their applications. These MCQs are beneficial for competitive exams too. Explore 30 + more Functions MCQs at Bissoy

• strlen() returns the length of the string on success and . . . . if the string is empty.
  ক

  -1

  খ

  NULL

  গ

  Garbage value

  ঘ

  0
• The arguments in a function are evaluated from .....
  ক

  left to right

  খ

  right to left

  গ

  sometimes left to right and sometimes right to left

  ঘ

  Always right to left
• Returning values from functions may include .....
  ক

  Arrays

  খ

  Objects

  গ

  Both A & B

  ঘ

  None of above
• It is always necessary to use parentheses with the print function.
  ক

  True

  খ

  False
•  . . . . returns a new DateTime object.
  ক

  getdate()

  খ

  date_create()

  গ

  date_sunrise()

  ঘ

  date()
• phpinfo() will display about?<br>1. OS version information<br>2. PHP installation<br>3. Variables<br>4. HTTP headers
  ক

  Option 1

  খ

  Option 2

  গ

  Option 3

  ঘ

  Option 4

  ঙ

  All the Above
• Above usleep() function pauses PHP for .<div class="program-section"><pre><code>usleep(1000000);</code></pre></div>
  ক

  1 second

  খ

  1 microseconds

  গ

  10 seconds

  ঘ

  100 microseconds
•  . . . . . converts the keys of an array into values and the values into keys.
  ক

  array_flips()

  খ

  array_transpose()

  গ

  array_trans()

  ঘ

  array_flip()
• Which of the following PHP functions can be used for generating unique id’s?
  ক

  uniqueid()

  খ

  id()

  গ

  md5()

  ঘ

  mdid()
• A function in PHP which starts with ______ (double underscore) is know as.
  ক

  Magic Function

  খ

  Inbuilt Function

  গ

  Default Function

  ঘ

  User Defined Function
• Which of the following are valid function names?1. function()2. €()3. .function()4. $function()
  ক

  Only 2

  খ

  None of the mentioned

  গ

  All of the mentioned

  ঘ

  3 and 4
• Which one of the following is the right way of defining a function in PHP?
  ক

  function { function body }

  খ

  data type functionName(parameters) { function body }

  গ

  functionName(parameters) { function body }

  ঘ

  function fumctionName(parameters) { function body }
• Solve log (a – 13) + 3log2 = log (3a + 1) and tell which of the following options state the correct value of a?
  ক

  21

  খ

  24

  গ

  20

  ঘ

  25
• Which of the following options represent the same value as log 0.234?
  ক

  log 2.34 + 1

  খ

  log 2.34 – 1

  গ

  log 2.34 / 100

  ঘ

  – log 2.34
• Which set of values of z satisfy log (z2 – 6z + 6) = 0?
  ক

  1 and 2

  খ

  4 and 6

  গ

  5 and 1

  ঘ

  3 and 2
• Given log10x = y, then how can 103y be expressed in terms of x?
  ক

  x3

  খ

  x2 / 2

  গ

  3x3

  ঘ

  3x3 / 2
• Which of the following options is the correct value for log6 ((46656) (216) / (36))?
  ক

  3

  খ

  36

  গ

  6

  ঘ

  7
• Which value of z given in the options below would satisfy logz (5 / 7) = 1 / 3?
  ক

  15 / 21

  খ

  343 / 125

  গ

  125 / 343

  ঘ

  21 / 15
• What would be the value of the expression (1 / log280) + (1 / log480) + (1 / log1080)?
  ক

  1

  খ

  2

  গ

  4

  ঘ

  8
• Which of the following relationship between x and y would satisfy log(x / y) + log(y / x) = log (x + y)?
  ক

  x – y = 1

  খ

  x + y = 1

  গ

  x / y = 1

  ঘ

  x * y = 1
• Given the value of log 2 = 0.3010, then what would be the value of log5512?
  ক

  3.876

  খ

  2.457

  গ

  1.786

  ঘ

  4.924
• Given log 3 = 0.4771, then what would be the value of (log (0.27)2 * log (27 / 10)2/3) / (log 9)?
  ক

  0.2887

  খ

  -0.4526

  গ

  -0.3427

  ঘ

  0.1996
• Which line is treated as H1 line?
  ক

  Comment line succeeding function definition

  খ

  Comment line preceding function definition

  গ

  Comment line after function

  ঘ

  All lines before and after function definition
• How does MATLAB help in passing function arguments?
  ক

  By call by value and call by reference

  খ

  Only by call by value

  গ

  Only by call by reference

  ঘ

  By call by address
• How do we access a global variable in nested functions?
  ক

  Simply seek the variable from the primary function

  খ

  Make a copy of the global variables from the primary function

  গ

  Declare the variable within the function

  ঘ

  Declare the variable as global
• Which command can be used for single step execution in debugging mode?
  ক

  dbstep

  খ

  dbstepin

  গ

  dbstatus

  ঘ

  dbcont
• Variables need to have same name while being passed from the primary function to the sub-function.
  ক

  True

  খ

  False
• What are persistent variables?
  ক

  Variables which retain values between calls to the function

  খ

  Variables which help in calling a function

  গ

  Variables which deal with functions

  ঘ

  Variables global to the function
• If the program demands evaluation of multiple, only decimal, values of the same function, what is the better way amongst the following?
  ক

  Using anonymous functions or inline functions

  খ

  Using str2func

  গ

  Using private functions

  ঘ

  Using any function
• Predominantly, what are the two kinds of errors in MATLAB programs?
  ক

  Syntax and runtime

  খ

  Syntax and logic

  গ

  Logic and runtime

  ঘ

  Syntax and algorithmic