New Year Sale 2026! Hurry Up, Grab the Special Discount - Save 25% - Ends In 00:00:00 Coupon code: SAVE25
Welcome to Pass4Success

- Free Preparation Discussions
Mail Us support@pass4success.com
Location US
Mob_nav_barsMENU

Blockchain CBDE Exam - Topic 4 Question 117 Discussion

Actual exam question for Blockchain's CBDE exam
Question #: 117
Topic #: 4
[All CBDE Questions]

To communicate with an Ethereum node via JavaScript:

Show Suggested Answer Hide Answer
Suggested Answer: A

by Elza at Aug 17, 2025, 10:32 PM

Limited Time Offer

25%

Off

Get Premium CBDE Questions as Interactive Web-Based Practice Test or PDF

Contribute your Thoughts:

0/2000 characters
Submit Cancel
Doug
2 months ago
Wait, Web3.js is closed source? That's surprising!
upvoted 0 times
...
Elke
3 months ago
B seems off, you don't need to implement the whole protocol.
upvoted 0 times
...
Ben
3 months ago
A is correct, JSON-RPC is essential for communication.
upvoted 0 times
...
Ashlee
3 months ago
Totally agree, you need that interface!
upvoted 0 times
...
Felicidad
3 months ago
A all the way, it's the standard way to connect!
upvoted 0 times
...
Billi
3 months ago
I’m a bit confused about C; I thought Web3.js was open source, so that makes me doubt that option.
upvoted 0 times
...
Hillary
4 months ago
I recall practicing a question similar to this, and I think A was the right choice there too, focusing on JSON-RPC.
upvoted 0 times
...
Weldon
4 months ago
I'm not entirely sure, but I feel like B might be correct since it mentions the Ethereum Protocol, which seems important for node connections.
upvoted 0 times
...
Alishia
4 months ago
I think the answer is A because I remember studying how JSON-RPC is essential for communication with Ethereum nodes.
upvoted 0 times
...
Marguerita
4 months ago
This is a good question that tests our understanding of Ethereum development. I think the key is recognizing that the JSON-RPC interface is the standard way to interact with Ethereum nodes from JavaScript applications. Option A seems like the correct answer here.
upvoted 0 times
...
Alyce
5 months ago
I'm not too sure about this question. The options seem a bit technical, and I'm not super familiar with the details of Ethereum node communication. I'll have to review my notes and try to reason through the best approach.
upvoted 0 times
...
Verda
5 months ago
Okay, I've got this. The correct answer is A - the library you use must make use of the JSON-RPC interface of an Ethereum node. That's the standard way to communicate with Ethereum nodes from JavaScript. I feel confident about this one.
upvoted 0 times
...
Junita
5 months ago
Hmm, I'm a bit confused about the different options here. I know we need to use some kind of library to interact with Ethereum nodes, but I'm not sure if the Ethereum protocol or Web3.js are required. I'll have to think this through carefully.
upvoted 0 times
...
Alesia
5 months ago
This looks like a straightforward question about communicating with Ethereum nodes. I think the key is understanding the JSON-RPC interface, so I'll focus on that.
upvoted 0 times
...
Edna
7 months ago
I'm pretty sure it's A. Why would we need to implement the whole Ethereum protocol just to talk to a node? Seems like overkill.
upvoted 0 times
Avery
6 months ago
I agree, implementing the whole Ethereum protocol does seem like overkill.
upvoted 0 times
...
Mabel
6 months ago
A) the library you use must make use of the JSON-RPC Interface of an Ethereum Node.
upvoted 0 times
...
...
Noel
7 months ago
I agree with Brent, using JSON-RPC Interface is essential for communication with an Ethereum node.
upvoted 0 times
...
Zona
7 months ago
The correct answer is definitely A. Using the JSON-RPC interface is the standard way to communicate with an Ethereum node from JavaScript.
upvoted 0 times
...
Brent
7 months ago
I think the answer is A) the library you use must make use of the JSON-RPC Interface of an Ethereum Node.
upvoted 0 times
...

Save Cancel