React JS MCQs 3
What is the purpose of the useCallback hook in React? a) To memoize functions so that they are not recreated on every render (Correct An...
React JS MCQs 2
What is the purpose of keys in React lists? a) To uniquely identify list items and help React identify which items have changed, added, ...
React JS MCQs 1
What is React JS? a) A JavaScript library for building user interfaces (Correct Answer) b) A server-side scripting language c) A r...
MYSQL MCQs - 10
What is the purpose of the AVG() function in MySQL? A) To return the maximum value of a column B) To return the minimum value of a co...
MYSQL MCQs - 9
What is the purpose of the IFNULL() function in MySQL? A) To check if a value is null B) To return the first non-null value in a list...
MYSQL MCQs - 8
What is the purpose of the DATE_FORMAT() function in MySQL? A) To calculate the difference between two dates B) To return the current...
MYSQL MCQs - 7
What is the purpose of the COUNT() function in MySQL? A) To return the number of rows in a table B) To calculate the total value of a...
MYSQL MCQs - 6
What is the purpose of the NOW() function in MySQL? A) To return the current date and time B) To return the current date C) To ret...
MYSQL MCQs - 5
What is the purpose of the CONCAT_WS() function in MySQL? A) To concatenate values from multiple rows into a single string B) To conc...
MYSQL MCQs - 4
What is the purpose of the GROUP_CONCAT() function in MySQL? A) To calculate the average value of a numeric column B) To concatenate ...
MYSQL MCQs - 3
What is the purpose of the JOIN keyword in MySQL? A) To perform aggregate functions on grouped data B) To filter rows based on a spec...
MYSQL MCQs - 2
Which SQL command is used to retrieve specific columns from a table in MySQL? A) GET B) FETCH C) SELECT D) FILTER Answer...
MYSQL MCQs - 1
Which statement is used to create a new table in MySQL? A) CREATE B) INSERT C) UPDATE D) SELECT Answer: A) CREATE ...
AngularJS MCQs - 10
What does ng-dblclick directive do in AngularJS? A) It binds a double-click event to a function. B) It initializes the Angu...
AngularJS MCQs - 9
What does ng-copy directive do in AngularJS? A) It binds a copy event to a function. B) It initializes the AngularJS application. ...
AngularJS MCQs - 8
What does ng-disabled directive do in AngularJS? A) It binds the disabled state of an input element to an expression. B) It initializ...
AngularJS MCQs - 7
What does ng-app directive do in AngularJS? A) It initializes the AngularJS application. B) It defines a new controller in AngularJS....
AngularJS MCQs - 6
Which AngularJS directive is used to dynamically change the content of HTML elements based on an expression? A) ng-show B) ng-bind ...
AngularJS MCQs - 5
Which AngularJS directive is used to dynamically add or remove HTML elements based on an expression? A) ng-if B) ng-show C) ng-hid...
AngularJS MCQs - 4
What does ng-class directive do in AngularJS? A) It binds CSS classes to HTML elements based on expression evaluation. B) It initiali...