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NEW QUESTION # 102
A developer wants to use a module named universalContainerslib and then call functions from it. How should a developer import every function from the module and then call the functions foo and bar?
Answer: A
Explanation:
import * as lib from '...' imports all named exports from the module into the namespace object lib.
You then call:
lib.foo();
lib.bar();
Option D correctly imports only foo and bar, not every function. The question explicitly says "import every function... and then call foo and bar", so A best matches.
Options B and C are invalid syntax or reference the wrong identifier.
NEW QUESTION # 103
Refer to the code below:
01 const server = require('server');
02
03 // Insert code here
A developer imports a library that creates a web server. The imported library uses events and callbacks to start the server.
Which code should be inserted at line 03 to set up an event and start the web server?
Answer: B
Explanation:
The question specifies:
The library "uses events and callbacks to start the server".
We want to "set up an event and start the web server".
Option C:
server((port) => { console.log('Listening on', port); });
This:
Calls server(...), which (by design in such libraries) typically starts the web server.
Passes a callback function that receives port when the server is ready.
Inside the callback, it logs "Listening on <port>".
This matches the "events and callbacks" description: the callback is invoked when the server has started listening.
Why others are incorrect:
A . server.on('connect', ...)
Assumes server is an event emitter instance with a 'connect' event, which is not given. Also, this line alone would not start the server.
B . server.start();
Assumes a start method exists; the question says the library "uses events and callbacks to start," implying invocation with a callback, not a plain start() call.
D . server();
Might start the server, but does not "set up an event" or callback to know when or where it is listening.
Therefore, C aligns with the described usage.
Concepts: callback-based APIs, starting servers with callbacks, event/callback style vs simple method calls.
NEW QUESTION # 104
A developer has the following array of hourly wages:
Let arr = (8, 5, 9, 75, 11, 25, 7, 75, , 13, 25);
For workers making less than $10 an hour rate should be multiple by 1.25 and returned in a new array.
How should the developer implement the request?
Answer: B
NEW QUESTION # 105
Console logging methods that allow string substitution:
Answer: A,C,D,E
Explanation:
The correct answers are B, C, D, and E.
JavaScript browser consoles support string substitution in several console output methods. String substitution means using placeholders such as:
%s
%d
%i
%f
%o
%O
%c
Example:
console.log("User name is %s and age is %d", "Alex", 25);
Output:
User name is Alex and age is 25
The valid console methods from the given options are:
Option
Method
Correct?
Reason
A
message
No
console.message() is not a standard console method.
B
log
Yes
console.log() supports formatted string substitution.
C
assert
Yes
console.assert() can output a formatted message when the assertion is false.
D
info
Yes
console.info() supports formatted output like console.log().
E
error
Yes
console.error() supports formatted output and displays an error-style message.
Example with these valid methods:
console.log("Name: %s", "John");
console.info("Score: %d", 95);
console.error("Error code: %d", 500);
console.assert(false, "Failed check for user: %s", "Admin");
So the verified answers are B, C, D, and E.
NEW QUESTION # 106
Refer to the code snippet:
01 let array = [1, 2, 3, 4, 4, 5, 4, 4];
02 for (let i = 0; i < array.length; i++) {
03 if (array[i] === 4) {
04 array.splice(i, 1);
05 i--;
06 }
07 }
What is the value of array after the code executes?
Answer: A
Explanation:
Comprehensive and Detailed
The loop removes every 4:
Start: [1, 2, 3, 4, 4, 5, 4, 4]
i=0 → 1 (no change)
i=1 → 2 (no change)
i=2 → 3 (no change)
i=3 → 4 → splice removes index 3 → [1,2,3,4,5,4,4], then i-- → 2
Next loop, i=3 → 4 again → splice → [1,2,3,5,4,4], i-- → 2
i=3 → 5 (no change)
i=4 → 4 → splice → [1,2,3,5,4], i-- → 3
i=4 → 4 → splice → [1,2,3,5], i-- → 3
Next i=4, array.length is 4 → loop ends.
All 4s removed, final array: [1, 2, 3, 5].
NEW QUESTION # 107
......
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