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IBM C1000-156 Exam - Topic 5 Question 30 Discussion

Which authentication type in QRadar encrypts the username and password and forwards the username and password to the external server for authentication?
C) TACACS authentication
A) RADIUS authentication
B) Two-factor authentication
D) System authentication

IBM C1000-156 Exam - Topic 5 Question 30 Discussion

Actual exam question for IBM's C1000-156 exam
Question #: 30
Topic #: 5
[All C1000-156 Questions]

Which authentication type in QRadar encrypts the username and password and forwards the username and password to the external server for authentication?

Show Suggested Answer Hide Answer
Suggested Answer: C

TACACS (Terminal Access Controller Access-Control System) authentication is a protocol used in IBM QRadar SIEM V7.5 for authenticating users by forwarding their credentials to an external server. Here's how it works:

Encryption: TACACS encrypts the entire payload of the authentication packet, including the username and password, ensuring secure transmission.

Forwarding Credentials: After encryption, the credentials are forwarded to an external TACACS server, which performs the actual authentication.

Authentication Process: The external server checks the credentials against its database and sends a response back to QRadar indicating whether the authentication is successful or not.

Reference IBM QRadar SIEM documentation explains TACACS authentication in detail, highlighting its secure encryption and external server verification process.


by Lavonna at Jul 06, 2025, 04:22 AM

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Wilbert
8 months ago
Totally agree, RADIUS is the way to go!
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Yuette
8 months ago
I thought TACACS was the one that does that?
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Leonor
8 months ago
It's definitely RADIUS authentication.
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Slyvia
9 months ago
System authentication doesn't encrypt like that.
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Tayna
9 months ago
Wait, are we sure about that? Seems too simple.
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Dorothy
9 months ago
I have a vague memory of RADIUS being the standard for this kind of authentication, but I might be mixing it up with something else.
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Freeman
9 months ago
I recall that two-factor authentication is more about adding an extra layer, not just encrypting credentials. So I think it’s probably not that one.
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Nydia
10 months ago
I'm not entirely sure, but I feel like TACACS might also be related to this. It could be worth considering.
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Kiley
10 months ago
I think RADIUS authentication is the one that encrypts the username and password before sending it. I remember practicing a similar question.
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Lanie
10 months ago
RADIUS seems like the most likely answer based on the description, but I'll make sure to read through the options carefully before selecting my final answer.
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Timothy
10 months ago
I'm leaning towards RADIUS, but I want to double-check the definitions of the other options just to be sure I'm not missing something.
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Gianna
10 months ago
The key here is that the question is asking about the authentication type that encrypts the credentials and sends them to an external server. That sounds like RADIUS to me.
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Luisa
11 months ago
Hmm, I'm a bit confused on the differences between the authentication types. I'll need to review my notes to make sure I understand the details of each one.
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Hyman
11 months ago
I'm pretty sure this is RADIUS authentication, since it mentions encrypting the username and password and forwarding them to an external server.
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Albina
1 year ago
System authentication? More like 'system annoyance'! RADIUS is the way to go.
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Lavera
11 months ago
RADIUS authentication is definitely the way to go.
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Filiberto
1 year ago
TACACS authentication? What is this, the '90s? RADIUS is where it's at, folks.
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Rhea
1 year ago
I agree, RADIUS is much more secure than TACACS.
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Lettie
1 year ago
RADIUS authentication is definitely the way to go.
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Sharmaine
1 year ago
I'm not sure, but I think B) Two-factor authentication also encrypts the credentials.
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Alline
1 year ago
I agree with Lavelle, TACACS authentication encrypts the username and password.
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Charlesetta
1 year ago
Two-factor authentication? Nah, that's too much work. I want the lazy option - RADIUS all the way!
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Lonny
1 year ago
Yeah, RADIUS is simple and gets the job done.
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Shonda
1 year ago
I agree, RADIUS is definitely the easier option.
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Nakisha
1 year ago
RADIUS authentication sounds like the right answer to me. Gotta love that encrypted username and password action!
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Ellen
1 year ago
RADIUS authentication provides that extra layer of security with encrypted username and password transmission.
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Staci
1 year ago
Yeah, RADIUS authentication is definitely the best choice for forwarding credentials to an external server.
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Mollie
1 year ago
I agree, RADIUS authentication is the way to go for secure username and password encryption.
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Lavelle
1 year ago
I think the answer is C) TACACS authentication.
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