Java MCQs - 9
What is the output of the following code? String str = "Java"; str.concat(" Programming"); System.out.println(str); ...
Java MCQs - 8
What does the this keyword refer to in Java? A) It refers to the previous object. B) It refers to the next object. C) It refers to the curre...
Java MCQs - 7
What is the output of the following code? String str = "Hello, World!"; System.out.println(str.indexOf("o")); A) 5...
Java MCQs - 6
What is the output of the following code? int[][] arr = {{1, 2, 3}, {4, 5, 6}, {7, 8, 9}}; System.out.println(arr[1][2]); A)...
Java MCQs - 5
What is the output of the following code? String str = "Hello, World!"; System.out.println(str.substring(7)); A) World! B...
Java MCQs - 4
What is the output of the following code? int x = 5; int y = 2; System.out.println(x / y); A) 2.5 B) 2 C) 2.0 D) 2.5 wit...
Java MCQs - 3
What is the output of the following code? int x = 10; System.out.println(x++); A) 10 B) 11 C) 9 D) Compiler error Answer: A) 10 ...
Java MCQs - 2
Which keyword is used to specify that a method does not return any value in Java? A) void B) null C) none D) empty Answer: A) void ...
Java MCQs - 1
Which of the following is true about Java? A) Java is a low-level programming language. B) Java is a purely procedural language. C) Java i...
Node JS MCQs - 10
What is the purpose of the res.type() method in Express.js? A) To set the HTTP status code of the response B) To set the content type...
Node JS MCQs - 9
Which of the following Express.js methods is used to handle HTTP OPTIONS requests? A) app.options() B) app.get() C) app.post() ...
Node JS MCQs - 8
Which of the following is NOT a built-in middleware function in Express.js? A) express.json() B) express.static() C) express.urlen...
Node JS MCQs - 7
What is the purpose of the req.query object in Express.js? A) To access request query parameters B) To access request headers C) T...
Node JS MCQs - 6
In Express.js, what is the purpose of the res.redirect() method? A) To send an HTTP response with JSON data B) To send an HTTP respon...
Node JS MCQs - 5
Which of the following modules is commonly used for authentication in Node.js web applications? A) express-session B) http C) fs ...
Node JS MCQs - 4
Which of the following modules is commonly used for routing in Node.js web applications? A) http B) fs C) express D) os ...
Node JS MCQs - 3
What is the purpose of the npm install command in Node.js? A) To initialize a new Node.js project B) To install dependencies for a No...
Node JS MCQs - 2
What is the purpose of the Buffer class in Node.js? A) To manipulate binary data B) To manage HTTP requests C) To handle file syst...
Node JS MCQs - 1
What is Node.js? A) A JavaScript runtime built on Chrome's V8 JavaScript engine B) A front-end framework for building user interf...
PHP MCQs - 10
What is the output of the following code snippet? $x = 10; $y = 3; echo $x % $y; A) 3 B) 1 C) 0 D) 2 Answer: ...