Question 1

Refer to the following array:Let arr = [1, 2, 3, 4, 5];Which three options result in x evaluating as [1, 2]?Choose 3 answer

Options :

A : let x = arr. slice (2);

B : let x = arr. slice (0, 2);

C : let x arr.filter((a) => (return a <= 2 });

D : let x = arr.filter ((a) => 2 }) ;

E : let x =arr.splice(0, 2);

Answer: A,B,C

Question 2

Refer to the following code:class Vehicle{constructor(plate){this.plate = plate;}}class Truck extends Vehicle{constructor(plate, weight){//Missing codethis.weight = weight;}displayWeight(){console.log(`The truck ${this.plate} has a weight of ${this.weight}lb.`);}}let myTruck = new Truck('123Ab',5000);myTruck.displayWeight();Which statement should be added to missing code for the code to display 'The truck 123AB has aweight of 5000lb.

Options :

A : super(plate)

B : super.plate = plate

C : Vehicle.plate = plate

D : this.plate = plate

Answer: A

Question 3

Which javascript methods can be used to serialize an object into a string and deserializea JSON string into an object, respectively?

Options :

A : JSON.stringify and JSON.parse

B : JSON.serialize and JSON.deserialize

C : JSON.encode and JSON.decode

D : JSON.parse and JSON.deserialize

Answer: A

Question 4

A developer is leading the creation of a new browser application that will serve a singlepage application. The team wants to use a new web framework Minimalsit.js. The Leaddeveloper wants to advocate for a more seasoned web framework that already has acommunity around it.Which two frameworks should the lead developer advocate for?Choose 2 answers

Options :

A : Vue

B : Angular

C : Koa

D : Express

Answer: B,D

Question 5

Refer to the code below:let timeFunction =() => {console.log('Timer called.'');};let timerId = setTimeout (timedFunction, 1000);Which statement allows a developer to cancel the scheduled timed function?

Options :

A : removeTimeout(timedFunction);

B : removeTimeout(timerId);

C : clearTimeout(timerId);

D : clearTimeout(timedFunction);

Answer: C