Salesforce B2B Commerce for Developers Accredited Professional (AP-202) Exam - Topic 4 Question 84 Discussion

Actual exam question for Salesforce's B2B Commerce for Developers Accredited Professional (AP-202) exam

Question #: 84
Topic #: 4

[All B2B Commerce for Developers Accredited Professional (AP-202) Questions]

Which category can receive signaling from a Lightning Message Channel?

Aonly descendents (i.e. children)

Bonly direct siblings

Cpage (anywhere on it)

Donly ancestors (i.e. parents)

Show Suggested Answer

Suggested Answer: C

A Lightning Message Channel can receive signaling from any component on a page (anywhere on it). A Lightning Message Channel is a service that allows components to communicate with each other across different Salesforce UI technologies, such as Aura, LWC, Visualforce, and Lightning web apps. A component can subscribe to a message channel and receive events that are published by another component on the same or different page. The message channel acts as a mediator that delivers the events to the subscribers. A Lightning Message Channel does not receive signaling only from descendants (i.e., children), only from direct siblings, or only from ancestors (i.e., parents), as these are limitations of event-based communication. Salesforce Reference: [Lightning Web Components Developer Guide: Communicate Across Salesforce UI Technologies], [Lightning Web Components Developer Guide: Communicate with Events]

by Elfriede at Nov 20, 2025, 02:32 AM

Limited Time Offer

25%

Off

Get Premium B2B Commerce for Developers Accredited Professional (AP-202) Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

Submit Cancel

Brynn

3 days ago

I thought it was only for descendents, like A.

upvoted 0 times

...

Percy

8 days ago

Wait, are you sure about that? I thought it was just for siblings.

upvoted 0 times

...

Joanna

13 days ago

Totally agree with C! Makes the most sense.

upvoted 0 times

...

Anisha

18 days ago

I think it's C) page (anywhere on it).

upvoted 0 times

...

Ethan

24 days ago

I'm going with A. Descendants (i.e. children) are the only ones who can receive the lightning-fast messages.

upvoted 0 times

...

Eric

29 days ago

B seems like the logical choice. Direct siblings are the only ones who can hear the secret Lightning Message Channel.

upvoted 0 times

...

Marylyn

1 month ago

Hmm, I'm not sure. Is it possible to receive signaling from a Lightning Message Channel while taking a lightning bolt to the face? Asking for a friend.

upvoted 0 times

...

Aide

1 month ago

D is the correct answer. Only ancestors (i.e. parents) can receive signaling from a Lightning Message Channel.

upvoted 0 times

...

Jessenia

1 month ago

I feel like it’s either A or C, but I can’t recall the specifics about how the channels work.

upvoted 0 times

...

Rana

2 months ago

I practiced a similar question where it mentioned only children could receive signals. I wonder if that applies here too.

upvoted 0 times

...

Glenn

2 months ago

I remember something about siblings and ancestors, but I’m not sure if they can receive signals. This is tricky!

upvoted 0 times

...

Aretha

2 months ago

I think the Lightning Message Channel can signal to any component on the page, so I’m leaning towards option C.

upvoted 0 times

...

Hillary

2 months ago

This seems like the kind of question where I need to visualize how the Lightning Message Channel works. Time to sketch it out.

upvoted 0 times

...

Alayna

2 months ago

I think the answer is C. The page can receive signaling from a Lightning Message Channel.

upvoted 0 times

...

Stephaine

3 months ago

I'm a little confused by the wording of the question. Can the channel send signals to multiple categories or just one?

upvoted 0 times

...

Tyra

3 months ago

I'm pretty sure the answer is C, but I want to make sure I'm not missing something. Gotta read the question closely.

upvoted 0 times

...

Freeman

3 months ago

I agree, C) page seems right. Flexibility is key in messaging.

upvoted 0 times

...

Justine

3 months ago

Okay, I think I know this one. Let me double-check the material on Lightning Message Channels.

upvoted 0 times

...

Rima

3 months ago

Hmm, this one seems tricky. I'll need to think through the different options carefully.

upvoted 0 times

...