Universal Containers (UC) notices that its application that allows users to search for
accounts makes a network request each time a key is pressed. This results in too many
requests for the server to handle.
● Address this problem, UC decides to implement a debounce function on string change
handler.
What are three key steps to implement this debounce function?
Choose 3 answers:

• A.If there is an existing setTimeout and the search string change, allow the existing
  setTimeout to finish, and do not enqueue a new setTimeout.
• B.Store the timeId of the setTimeout last enqueued by the search string change handle.
• C.If there is an existing setTimeout and the search string changes, cancel the existing
  setTimeout using the persisted timerId and replace it with a new setTimeout.
• D.Ensure that the network request has the property debounce set to true.
• E.When the search string changes, enqueue the request within a setTimeout.

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A developer wrote the following code:
01 let X = object.value;
02
03 try {
04 handleObjectValue(X);
05 } catch (error) {
06 handleError(error);
07 }
The developer has a getNextValue function to execute after handleObjectValue(), but does not want to execute getNextValue() if an error occurs.
How can the developer change the code to ensure this behavior?

• A.03 try{
  04 handleObjectValue(x);
  05 } catch(error){
  06 handleError(error);
  07 }
  08 getNextValue();
• B.03 try {
  04 handleObjectValue(x)
  05 ........................
• C.03 try{
  04 handleObjectValue(x);
  05 } catch(error){
  06 handleError(error);
  07 } then {
  08 getNextValue();
  09 }
• D.03 try{
  04 handleObjectValue(x);
  05 } catch(error){
  06 handleError(error);
  07 } finally {
  08 getNextValue();
  10 }

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Refer to the code below:
01 const server = require('server');
02 /* Insert code here */
A developer imports a library that creates a web server. The imported library uses events and
callbacks to start the servers
Which code should be inserted at the line 03 to set up an event and start the web server ?

• A.console.log( 'Listening on ', port) ;
• B.Server.start ();
• C.server()
• D.server.on(' connect ' , ( port) => {
  console.log('Listening on ' , port) ;})
• E.serve(( port) => (

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GIven a value, which three options can a developer use to detect if the value is NaN?
Choose 3 answers !

• A.value === Number.NaN
• B.Number.isNaN(value)
• C.Object.is(value, NaN)
• D.value == NaN
• E.value ! == value

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Refer to the code below:
Async funct on functionUnderTest(isOK) {
If (isOK) return 'OK' ;
Throw new Error('not OK');
)
Which assertion accuretely tests the above code?

• A.Console.assert (await functionUnderTest(true), ' not OK ')
• B.Console.assert (await functionUnderTest(true), ' not OK ')
• C.Console.assert (await functionUnderTest(true), 'OK')
• D.Console.assert (await functionUnderTest(true), ' OK ')

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