The correct answer is that the user 'jake' has the same privileges as root, because in Linux, a UID of 0 is the exclusive identifier for the superuser. The kernel grants permissions based on the numeric UID, not the username, so any account assigned UID 0 in /etc/passwd is treated as root with full system access. On the CompTIA PenTest+ PT0-002 exam, this concept tests your understanding of Linux privilege escalation vectors, often appearing in scenarios where a misconfigured user account or backdoor has been given UID 0 to bypass standard authentication. A common trap is assuming the username matters—remember, the system only cares about the number. For a quick memory tip: "UID 0 is the root key; no matter the name, the power is the same."
PT0-002 Attacks and Exploits Practice Question
This PT0-002 practice question tests your understanding of attacks and exploits. Match the stated requirement to the specific cloud service, access model, or configuration option — many options are valid in isolation but not for this scenario. 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.
A penetration tester needs to escalate privileges on a Linux target after gaining initial shell access. The /etc/passwd file shows a user 'jake' with UID 0. What does this indicate?
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
The user 'jake' has the same privileges as root
In Linux, a UID (User ID) of 0 is reserved exclusively for the root superuser. When the /etc/passwd file shows a user 'jake' with UID 0, the system treats 'jake' with the same privileges as root, regardless of the username. This is because the kernel checks the UID, not the username, for permission decisions. Therefore, 'jake' has full root-level access, making option C correct.
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.
✗
The user 'jake' is a normal user with UID misconfiguration
Why it's wrong here
UID 0 is not a misconfiguration; it grants root privileges.
✗
The user 'jake' is a member of the root group
Why it's wrong here
Root group is GID 0, not UID. UID 0 means the user is root.
✓
The user 'jake' has the same privileges as root
Why this is correct
A UID of 0 means the account is the superuser, regardless of username.
Related concept
Read the scenario before looking for a memorised answer.
✗
There is a duplicate user 'jake' and 'root'
Why it's wrong here
Duplicate UID 0 can exist, but it doesn't indicate a duplicate user.
Common exam traps
Common exam trap: answer the scenario, not the keyword
The trap here is that candidates confuse UID 0 with group membership (GID 0) or assume it's a misconfiguration, when in fact the UID field in /etc/passwd directly determines superuser status, not the username or group.
Detailed technical explanation
How to think about this question
Under the hood, the Linux kernel uses the UID (stored in the task_struct) for all permission checks, such as file access (via inode UID) and capability checks. A user with UID 0 bypasses all discretionary access controls (DAC) and is granted all capabilities (e.g., CAP_SYS_ADMIN). In real-world scenarios, penetration testers often exploit this by modifying /etc/passwd to set a user's UID to 0, or by using commands like 'usermod -u 0 jake' to escalate privileges without needing sudo or SUID binaries.
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.
TExam Day Tips
→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 security analyst at a medium-sized enterprise encounters this scenario during an investigation or architecture review. The correct answer reflects best practice for the specific threat or control described. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Security exam questions test whether you can match controls to threats in context — not just recall definitions.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this PT0-002 question in full detail.
Attacks and Exploits — This question tests Attacks and Exploits — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: The user 'jake' has the same privileges as root — In Linux, a UID (User ID) of 0 is reserved exclusively for the root superuser. When the /etc/passwd file shows a user 'jake' with UID 0, the system treats 'jake' with the same privileges as root, regardless of the username. This is because the kernel checks the UID, not the username, for permission decisions. Therefore, 'jake' has full root-level access, making option C correct.
What should I do if I get this PT0-002 question wrong?
Identify which exam domain this question belongs to, review the core concept, then practise similar questions from the same domain.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
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Question Discussion
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