Salesforce 31 Oct 2023

How Many Future methods can be defined in a Class?

• 20

• 30

• 500

• Any number of. There are no restrictions as such.

function sayHi() {

console.log(name);

console.log(age);

var name = 'Lydia';

let age = 21;

}

sayHi();

• Lydia and undefined

• Lydia and ReferenceError

• ReferenceError and 21

• undefined and ReferenceError

for (var i = 0; i < 3; i++) {

setTimeout(() => console.log(i), 1);

}

for (let i = 0; i < 3; i++) {

setTimeout(() => console.log(i), 1);

}

• 0 1 2 and 0 1 2

• 0 1 2 and 3 3 3

• 3 3 3 and 0 1 2

What's the output?

+true; !'Lydia';

• 1 and false

• false and NaN

• false and false

Answer explanation

The unary plus tries to convert an operand to a number. true is 1, and false is 0.

The string 'Lydia' is a truthy value. What we're actually asking, is "is this truthy value falsy?". This returns false.

What's the output?

let greeting;

greetign = {}; // Typo!

console.log(greetign);

• {}

• ReferenceError: greetign is not defined

• undefined

What's the output?

function sum(a, b)

{

return a + b;

}

sum(1, '2');

• NaN

• TypeError

• "12"

• 3

What's the output?

let number = 0;

console.log(number++);

console.log(++number);

console.log(number);

• 1 1 2

• 1 2 2

• 0 2 2

• 0 1 2

setTimeout(() => console.log(1));

Promise.resolve().then(() => console.log(2));

Promise.resolve().then(() => setTimeout(() => console.log(3)));

new Promise(() => console.log(4));

setTimeout(() => console.log(5));

• • 1 2 3 4 5

  
  

• 1 5 2 4 3

• 3 2 4 1 5

• 4 2 1 5 3

• 2 4 3 1 5

How many methods are required in a Batch Apex class?

• One

• Two

• Three

• Four

What is the maximum number of batch jobs that can be submitted for execution in a 24-hour period?

• 10

• 50

• 100

• 200