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Arcitura Education S90.18 Exam - Topic 5 Question 65 Discussion

Actual exam question for Arcitura Education's S90.18 exam
Question #: 65
Topic #: 5
[All S90.18 Questions]

Service A hashes a message, resulting in message digest X. Service A encrypts the message digest X with its private key, resulting ir ciphertext X1. Service A sends the message and X1 to Service B . Service B hashes the message, resulting in message digest Y. Service B decrypts X1 with Service A's public key, recovering message digest X. Service B compares Y with X and finds them to be equal. This proves that:

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Suggested Answer: D

by Teri at Feb 02, 2023, 12:53 PM

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Mabelle
5 months ago
All of the above makes sense to me!
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Verda
6 months ago
Public key cryptography is definitely in play here.
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Britt
6 months ago
Wait, how does this prove that? Sounds a bit off.
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Dolores
6 months ago
Totally agree, but also, only Service A could've sent it.
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King
6 months ago
The message was not altered, that's a key point!
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Ellsworth
6 months ago
I definitely recall that public key cryptography was involved, but I’m not sure if that’s the only thing we can conclude from this scenario. It feels like there's more to it.
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Dorothy
6 months ago
I feel like I might be mixing up the concepts here. I know that comparing the digests shows integrity, but does it really confirm that only Service A sent the message?
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Skye
6 months ago
This reminds me of a practice question where we had to identify what a digital signature proves. I think it might be option D since it covers all aspects mentioned.
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Kristin
7 months ago
I remember studying how hashing and encryption work together, but I'm not entirely sure if the answer is just about the message being unaltered or if it proves more than that.
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Reita
7 months ago
I'm feeling pretty confident about this one. Case sensitivity is a common programming concept, so I think I can apply that knowledge to select the right answer.
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Craig
7 months ago
I think the fishbone diagram is sometimes called a cause and effect diagram, but I'm not entirely sure.
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Lynda
7 months ago
I remember discussing the importance of using non-root accounts for administrative tasks. Using the root account seems risky.
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Marisha
7 months ago
I'm pretty confident about this one. HTTPS uses TCP port 443 as the default port, and it's a protocol used in the URL address line to connect to a secure site.
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