- A
It verifies the client's IP address to prevent replay attacks.
Why wrong: Kerberos uses timestamps to prevent replay, not IP verification in the TGT.
- B
It allows the client to request additional service tickets without re-authentication.
The TGT is used to obtain service tickets from the TGS.
- C
It encrypts the session key between the client and the target service.
Why wrong: The session key is encrypted in the service ticket, not the TGT.
- D
It authenticates the user to the target service directly.
Why wrong: The service ticket authenticates to the target service, not the TGT.
Question 330 of 1,000
CISSP Identity and Access Management Practice Question
This CISSP practice question tests your understanding of identity and access management. Compare every option against the stated constraints before choosing — the best answer satisfies all requirements, not just the most obvious one. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
During a Kerberos authentication process, the client receives a Ticket Granting Ticket (TGT) from the Authentication Server (AS). Later, the client presents the TGT to the Ticket Granting Server (TGS) to request a service ticket. Which of the following best describes the purpose of the TGT?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"best"Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
It allows the client to request additional service tickets without re-authentication.
The TGT is a credential that proves the user has been authenticated by the AS and is allowed to request service tickets without re-entering credentials.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
It verifies the client's IP address to prevent replay attacks.
Why it's wrong here
Kerberos uses timestamps to prevent replay, not IP verification in the TGT.
- ✓
It allows the client to request additional service tickets without re-authentication.
Why this is correct
The TGT is used to obtain service tickets from the TGS.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
- ✗
It encrypts the session key between the client and the target service.
Why it's wrong here
The session key is encrypted in the service ticket, not the TGT.
- ✗
It authenticates the user to the target service directly.
Why it's wrong here
The service ticket authenticates to the target service, not the TGT.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
- Read the scenario before looking for a memorised answer.
- Find the constraint that changes the correct option.
- Eliminate answers that are true in general but not in this case.
- Use explanations to understand the rule behind the answer.
TExam Day Tips
- Underline the problem statement mentally.
- Watch for words such as best, first, most likely and least administrative effort.
- Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A developer is choosing between AES-256 (symmetric) and RSA-2048 (asymmetric) for encrypting a large file that will be sent to a partner. Symmetric encryption is fast but requires key exchange; asymmetric is slower but solves the key distribution problem. A hybrid approach — encrypt the file with AES, encrypt the AES key with RSA — is standard. Questions like this test whether you understand when each approach applies.
What to study next
Got this wrong? Here's your next step.
Identify which CISSP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
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Identity and Access Management — study guide chapter
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FAQ
Questions learners often ask
What does this CISSP question test?
Identity and Access Management — This question tests Identity and Access Management — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: It allows the client to request additional service tickets without re-authentication. — The TGT is a credential that proves the user has been authenticated by the AS and is allowed to request service tickets without re-entering credentials.
What should I do if I get this CISSP question wrong?
Identify which CISSP exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
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Last reviewed: Jul 4, 2026
This CISSP practice question is part of Courseiva's free ISC2 certification practice question bank. Courseiva provides original exam-style practice questions with explanations, topic-based practice, mock exams, readiness tracking, and study analytics to help learners prepare for the CISSP exam.
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