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Programming Portal MCQs [196]

You will find all MCQs which are added in Programming Portal by Yami Thakur

Q. Which PHP function counts all values of an array?

Q. Which PHP function is used to remove duplicate values from an array?

Q. Which PHP feature allows strict comparison of return types?

Q. Which PHP function checks if a string contains another string?

Q. Which PHP function converts a string to uppercase?

Q. Which PHP function returns all declared traits?

Q. Which PHP function checks if a class uses a trait?

Q. Which PHP feature allows method behavior to change based on object type?

Q. Which PHP function converts a string to an integer safely?

Q. Which PHP keyword prevents method overriding?

Q. Which PHP function returns all declared interfaces?

Q. Which PHP operator checks if a value exists and is not null?

Q. Which PHP function changes the execution time limit at runtime?

Q. Which PHP directive limits script execution time?

Q. Which PHP function returns the current execution time of a script?

Q. Which magic method is triggered when accessing undefined properties?

Q. Which PHP feature allows accessing inaccessible object properties?

Q. Which PHP function starts output buffering?

Q. What is the main purpose of output buffering in PHP?

Q. What will be the output of: echo null ?? 'PHP';

Q. Which PHP function clears output buffering?

Q. Which PHP keyword makes a property accessible only within the same class?

Q. Which PHP feature allows type declarations in function parameters?

Q. Which PHP function generates cryptographically secure random bytes?

Q. Which PHP extension is required for REST API development?

Q. Which PHP function validates an email address?

Q. Which PHP keyword stops a loop completely?

Q. Which PHP function is used to set HTTP headers?

Q. Which HTTP status code represents 'Unauthorized'?

Q. Which PHP superglobal holds JSON input from raw requests?

Q. Which function restores serialized data?

Q. Which PHP function is used to serialize data?

Q. What does the spaceship operator (<=>) return?

Q. Which PHP operator is called the null coalescing operator?

Q. Which class is used for date and time manipulation in modern PHP?

Q. Which PHP feature allows runtime inspection of classes and methods?

Q. Which PHP function is used to get request headers?

Q. Which PHP function converts an object into an array?

Q. What will be the output of: echo 5 === '5';

Q. What will be the output of: echo 5 == '5';

Q. Which magic method is called when cloning an object?

Q. Which PHP keyword is used to clone an object?

Q. Which PHP function returns the HTTP response code?

Q. Which file is commonly used by Composer to manage dependencies?

Q. Which PHP feature allows automatic loading of classes?

Q. Which PHP function sets a custom error handler?

Q. Which PHP error type stops script execution?

Q. Which PHP function is used to escape output to prevent XSS?

Q. Which PDO fetch mode returns results as an associative array?

Q. Which PHP interface must be implemented to make an object iterable with foreach?

Q. Which keyword is used inside a generator function?

Q. Which PHP feature allows lazy iteration of values?

Q. Which PHP return type indicates no value is returned?

Q. Which PHP statement enables strict type checking?

Q. Which PHP feature helps avoid class name conflicts?

Q. Which keyword is used to import a namespace in PHP?

Q. Which PHP feature allows anonymous functions?

Q. Which PHP function is used to manually throw an exception?

Q. Which PHP keyword is used to handle exceptions?

Q. What is the output of the given code?

Q. What is the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What is the output of the given ruby code?

Q. What is the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. What will be the output of the given ruby code?

Q. Which of the following is correct syntax to create an array in ruby?

Q. In Ruby, Array index -1 represent ______.

Q. Array indexing in ruby starts at_________.

Q. Each element in an array is associated with _______.

Q. Ruby arrays are ____________

Q. Which is a perfect example of runtime polymorphism?

Q. Which specification that provides runtime environment in which java byte code can be executed?

Q. Which is commonly used method of ByteArrayOutputStream class?

Q. Thread class constructor allocates a new thread object

Q. Which of the package is used to enable interaction with garbage collector?

Q. The clone() method is defined in?

Q. Where are these five keywords try, catch, finally, throw, and throws used in?

Q. The life cycle of the thread is controlled by ?

Q. In which the access modifier means that the field can be accessed by all classes in your application?

Q. Which inheritance is not supported in java?

Q. What is the expansion of the compiled java classes?

Q. ​​Which of the following is true of servers?

Q. Which section provides for the implementation of the private server side of the system?

Q. What is the range for the type of char data in Java?

Q. Which of the following is not an access modifier?

Q. Which of these keywords is used to block an exception?

Q. Which of these statements are wrong about Thread?

Q. Which of these packages contains the stack overflow variant in Java?

Q. Which of the following is not a Java Profiler?

Q. Which of the following is the superclass of all Java classes?

Q. Which of these selection statements in Java do you have?

Q. What difference does it make when java is out of memory?

Q. What part is used to compile, debug and execute java programs?

Q. Who founded Java Programming?

Q. The following command

Q. The following command

Q. Which command is used to assign read-write permission to the file owner?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. What will be the output of the following PHP code ?

Q. Which of the following function is used to compute the difference between two arrays in PHP?

Q. What will be the output of the following program?

Q. Which PHP function converts an English text datetime into a Unix timestamp?

Q. Which of the following function in PHP returns the time of sunrise of a particular day and location?

Q. Which PHP function is used to find the position of the last occurrence of a substring inside another string?

Q. Which PHP function is capable to read specific number of characters from a file?

Q. Which PHP function determines the last access time of a file?

Q. The function in PHP that can be used to concatenate array elements to form a single delimited string is

Q. Which of the following function converts a string to all uppercase?

Q. Which of the following function is used to compress a string in PHP?

Q. Which of the following is the correct way to print "Hello World" in PHP?

Q. Which of the following function in PHP returns a text in title case from a variable?

Q. Which of the following is a built-in function in PHP that adds a value to the end of an array?

Q. Which of the following is the correct way to create an array in PHP?

Q. Which of the following variable name is invalid?

Q. String values in PHP must be enclosed within

Q. Which of the following function in PHP can be used to test the type of any variable?

Q. Which of the following is used to end a statement in PHP?

Q. Which of the following is/are the code editors in PHP?

Q. Which of the following function is used to sort an array in descending order?

Q. Which of the following function is used to unset a variable in PHP?

Q. Which of the following function is used to get the ASCII value of a character in PHP?

Q. Which of the following function is used to set cookie in PHP?

Q. Which of the following function is used to find files in PHP?

Q. Which of the following function displays the information about PHP and its configuration?

Q. Which of the following is the correct way to open the file "sample.txt" as readable?

Q. What is the use of sprintf() function in PHP?

Q. What is the use of isset() function in PHP?

Q. What is the use of fopen() function in PHP?

Q. Which of the following is the correct use of the strcmp() function in PHP?

Q. Which of the following is the correct way of defining a variable in PHP?

Q. Which of the following PHP function is used to generate unique id?

Q. Which of the following is the correct way to create a function in PHP?

Q. What does PEAR stands for?

Q. Which of the following is the use of strpos() function in PHP?

Q. Which of the following starts with __ (double underscore) in PHP?

Q. Which of the following is used for concatenation in PHP?

Q. Which of the following is the use of strlen() function in PHP?

Q. Which of the following is used to display the output in PHP?

Q. Which of the following is correct to add a comment in php?

Q. Which of the following is not a variable scope in PHP?

Q. Which of the following is the default file extension of PHP?

Q. Variable name in PHP starts with 

Q. Who is known as the father of PHP?

Q. PHP stands for

Q. Which feature was already introduced before HTML5?

Q. Which tag is used with JavaScript?

Q. What application can one create even before the introduction of HTML5?

Q. What if one does not use the doctype in the starting of HTML document?

Q. Which of the following is not semantic element for text in HTML5?

Q. Which tag supports Non-English language?

Q. Which element was not removed by HTML5?

Q. Which of the following defines the title of a work?

Q. Which element is design to wrap a single piece of information?

Q. What an article element should not contain?

Q. Which of the following statement is true?

Q. What does <main> include?

Q. Which of the following is not sectioning elements?

Q. How many times can HTML5 events be fired?

Q. What is css stands for

Q. In css what does h1 can be called as

Q. In css what does “color:red” can be called as

Q. Which of the following attributes is used to specify elements to bind style rules to?

Q. ________ selectors, which are used to specify a rule to bind to a particular unique element

Q. In css what does “font-size” can be called as

Q. _________ selectors, which are used to specify a group of elements

Q. Which of the following tag is used to embed css in html page?

Q. __________ implementation that introduced text, list, box, margin, border, color, and background properties.

Q. Is it the best way to include H1 heading only one time in the web page. State true or false.

Q. Which of the following Module is not available in CSS3.

Q. What module introduces the ability to modify CSS property values over time, such as position or color, to create animated layouts?

Q. What module defines the management of generated content for print output, including crop mark indication, header/footer handling, and much more?

Q. What module defines the handling of lists, including marker styles and some aspects of counters?

Q. What module expands the absolute and relative units of measure, including significant changes to support animation and aural changes with time (s and ms) and angle (deg and rad) values?

Q. Which of the following selector is used to selects siblings?

Q. Which of the following selector is used to selects the elements that are the default among a set of similar elements?

Q. Which of the following selector is used to selects the element that is the first child of its parent that is of its type?

Q. Which of the following selector is used to selects the element that is the nth child of its parent?

Q. Which of the following selector is used to selects the element that is the root of the document?

Q. Which of the following selector is used to select elements that are read-only. When applied to form elements, this would select fields with the readonly attribute set?

Q. Which of the following measurement represent seconds?