Question 1

Considering type coercion, what does the following expression evaluate to?

True + '13' + NaN

Options :

A : ' 113Nan '

B : 14

C : ' true13 '

D : ' true13NaN '

Answer: D

Question 2

A developer has a web server running with Node.js. The command to start the web server is node server.js. The web server started having

latency issues. Instead of a one second turnaround for web requests, the developer now sees a five second turnaround.

Which command can the web developer run to see what the module is doing during the latency period?

Options :

A : NODE_DEBUG=true node server.js

B : DEBUG=http, https node server.js

C : NODE_DEBUG=http,https node server.js

D : DEBUG=true node server.js

Answer: D

Question 3

Given two expressions var1 and var2. What are two valid ways to return the logical AND

of the two expressions and ensure it is data type Boolean ?

Choose 2 answers:

Options :

A : Boolean(var1 && var2)

B : var1 && var2

C : var1.toBoolean() && var2toBoolean()

D : Boolean(var1) && Boolean(var2)

Answer: A,D

Question 4

Given the JavaScript below:

Which code should replace the placeholder comment on line 05 to highlight accounts that match the search string'

Options :

A : 'yellow' : null

B : null : 'yellow'

C : 'none1 : 'yellow'

D : 'yellow : 'none'

Answer: D

Question 5

developer is trying to convince management that their team will benefit from using

Node.js for a backend server that they are going to create. The server will be a web server that

handles API requests from a website that the team has already built using HTML, CSS, and

JavaScript.

Which three benefits of Node.js can the developer use to persuade their manager?

Choose 3 answers:

Options :

A : I nstalls with its own package manager to install and manage third-party libraries.

B : Ensures stability with one major release every few years.

C : Performs a static analysis on code before execution to look for runtime errors.

D : Executes server-side JavaScript code to avoid learning a new language.

E : User non blocking functionality for performant request handling .

Answer: A,C

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