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This set of Operating System Architecture Multiple Choice Questions & Answers (MCQs) focuses on Operating System Architecture Set 23
Q1 | Which of the following is true of all Perl scripts ?
- meta characters are always preceded by a forward slash
- perl statements are always followed by a period
- parameters must always followed by period
- perl statements are always followed by a semicolon
Q2 | Scalar variables
- include string exclusively
- are defied two discrete values
- are the building blocks of more complicated data structure
- always operate in the same manner as variable in algebric function
Q3 | Which of the following expression operators increments a varibale by one ?
- ..
- .
- **
- *
Q4 | STDIN, or standard in, is a mechanism for
- performing type conversion automatically
- retrieving data from the user while a script is executing
- prompting the user for specific information
- outputting a string to standard out
Q5 | Perl is scripting language which is based on
- inerpreter
- compiler
- assembler
- all of the above
Q6 | Perl define scalar variable by
- @
- %
- $
- #
Q7 | What is the extension of the perl file ?
- .p
- .pl
- .perl
- .pe
Q8 | which is escape character in perl ?
- //
- !
- \\
- |
Q9 | comments are placed inside a perl program file using the character
- @
- %
- $
- #
Q10 | An array, in perl, is an
- un-ordered list of scalar data
- ordered list of scalar data
- ordered list of numbers
- none of the above
Q11 | The logical operator op1 && op2 means
- performs a logical not of the operand
- performs a logical or of the two operands
- performs a logical and of the two operands
- performs alogical and then or of the two operands
Q12 | Perl uses this <=> operator for
- equal
- comparision
- less than or equal
- greater than and equal
Q13 | Which of the following statements is NOT TRUE statements ?
- perl chomp function will not remove all whitespace characters by default
- perl chomp function returns the number of characters removed
- perl chomp function checks whether the last character matches the input line separator and only then it deletes it.
- it deletes the last ending varibale character regardless of whatever it is.
Q14 | Default file accessed through a print statement in perl is
- stdin
- stdout
- stderr
- all of these
Q15 | What is python ?
- it is object oriented programming language
- it is software package
- it is intrpreter
- it is assembly language
Q16 | In python, the list L contains the following elements : ['A', 1,'1','George']. Which of the following ways of slicing would assign only the first two elements to the variable X ?
- l[1:2]
- x=l[0:1]
- x=[l[0:2]
- none of the above
Q17 | //" in pyhon is
- floor division operator
- comment
- new line
- none of the above
Q18 | **" in python is an
- exponentiation
- address of
- value redirection
- none of the above
Q19 | In python, multi line string are given by
- single quotes
- double quotes
- triple quotes
- none of the above
Q20 | python source code file has an extension of
- pys
- py
- src
- none of the above
Q21 | which of the following translate and execute programe statements in sequence, instead of having separate translation and execution steps ?
- procedure
- interpreter
- paradigm
- compiler
Q22 | Which of the following procedure a true or false result ?
- control structure
- strong typing
- data types
- boolean express
Q23 | Which of the following language has an IF statement for making decision ?
- perl chomp function will
- c++
- python
- all of these
Q24 | Which of following language does not requires declarations ?
- java
- c++
- python
- vb.net
Q25 | Which of the following is not a valid data type in python ?
- int
- float
- double
- str