Which of the following is correct about C#?

  • It is component oriented.
  • It can be compiled on a variety of computer platforms.
  • It is a part of .Net Framework.

The default access specifer for the class members is?

  • private

What’s the difference between unset() and unlink()

  • unset() sets a variable to "undefined" and unlink() deletes a file from the file system.

What’s the difference between the include() and require() functions?

  • require() function exits with a fatal error if the file can't be included, while the include() function may still pass and jump to the next step in the execution.

What will be output in console:

var animals = ['Tiger', 'Lion', 'Camel', 'Cow', 'Duck'];
console.log(animals.slice(2, 4));
  • Array ["Camel", "Cow"]

What is going to display with this js code:

var myArray = ['a', 'b', 'c'];
 console.log(myArray[-1]);
  • undefined

When connecting to a database through PHP, do you use mysql or mysqli?

  • mysqli

Before insert information into a database for any reason, you need to escape the content so you don’t get SQL hacked (injected)

  • true

How do you store passwords?

  • One way encryption.

Which of these lines of code would replace the content of a webpage with “Saaaaaakib”?

  • document.body.innerHTML = "Saaaaaakib";

What sort of data type does the document variable store?

  • object

When you’re writing JS on a webpage, what is the name of the global variable that represents the DOM?

  • document

The DOM is the set of functionality that browsers provide to enable developers to access and manipulate webpages. What does DOM stand for?

  • Document Object Model
const team = [
        'Mashrafi', 
        'Sakib', 
        'Mahmudullah', 
        'Mushfiq', 
        'Tamim', 
        'Rubel', 
        'Aftab', 
        'Razzaq', 
        'Rafiq'
    ];
const [captain, assistant, ...players] = team;
consoloe.log(players);

What is the output of consoloe.log(players); in your console?

  • Array ["Mahmudullah", "Mushfiq", "Tamim", "Rubel", "Aftab", "Razzaq", "Rafiq"]
const team = [
        'Mashrafi', 
        'Sakib', 
        'Mahmudullah', 
        'Mushfiq', 
        'Tamim', 
        'Rubel', 
        'Aftab', 
        'Razzaq', 
        'Rafiq'
    ];
const [captain, assistant, ...players] = team;
consoloe.log(captain);

What is the output of consoloe.log(captain); in your console?

  • Mashrafi

Considering the following snap of code, what is the expected result?

const gotNumber = 46;
if (gotNumber>45) {
    var division = 'Second Division';
}
console.log(`Division is ${division} by number ${gotNumber}`);
  • Division is Second Division by number 46

Considering the following snap of code, what is the expected result?

const gotNumber = 46;
if (gotNumber>45) {
    let division = 'Second Division';
}
console.log(`Division is ${division} by number ${gotNumber}`);
  • Error: division is not defined

Considering the following snap of code, what is the expected result?

let dogName = 'Tom';
let catName = 'Jerry';
[dogName, catName] = [catName, dogName];
console.log(`Dog name: ${dogName}`);
  • String output: Dog name: Jerry

When used as a constructor, like new MyFunction(), the value of this will be a brand new object provided by the JavaScript runtime. If we don’t explicitly return anything from that function, this will be considered its return value.

  • true

Apply or call method can be used to override the value of this?

  • true

What does the below line do considering it as the first line in your javascript file:

(function(){
    alert(this);
})();
  • I will see an alert with not null value

The term API is short for ____.

  • Application Programming Interface

© 2018 Micro Solutions Bangladesh and/or MCQ Academy.