mediumMultiple SelectObjective-mapped
CS0-003 Practice Question: A vulnerability manager wants accurate Linux…
A vulnerability manager wants accurate Linux package findings. Which scan conditions are important? (Choose two.)
⚠ Common exam trap
The CS0-004 exam often tests the misconception that unauthenticated network scans (e.g., banner grabbing or ICMP) can replace authenticated scans for accurate software inventory, but only authenticated access with proper permissions yields reliable package-level findings.
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
✓
Authenticated access to inspect installed packages
For accurate Linux package findings, the vulnerability scanner must have authenticated access (e.g., via SSH with valid credentials) to inspect installed packages directly from the package manager database (e.g., RPM or dpkg). Without authentication, the scanner can only perform unauthenticated network-based checks, which cannot reliably determine installed software versions or patch levels. Authenticated access ensures the scanner can execute commands like 'rpm -qa' or 'dpkg -l' to enumerate packages with high accuracy.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
Authenticated access to inspect installed packages
Why this is correct
Authenticated access matters because installed package inventory on Linux lives in local databases such as the RPM database or dpkg status file, which are only queryable by logging into the host over SSH and running commands like rpm -qa or dpkg-query -W; an unauthenticated network scan can only infer software from open ports or service banners, producing an incomplete and often inaccurate picture of actual installed packages.
- ✓
Scanner account permissions sufficient for inventory commands
Why this is correct
Sufficient scanner account permissions matter separately from authentication itself because merely logging in with a low-privilege account may still fail to read protected paths like /var/lib/rpm or /var/lib/dpkg, or to execute package-manager binaries, causing the scan to silently omit packages and generate false negatives for real vulnerabilities even though the SSH session succeeded.
- ✗
Only scanning ICMP echo replies
Why it's wrong here
ICMP echo replies only confirm that a host is reachable on the network and responding to ping requests; this protocol carries no application or package-layer data whatsoever, so it can never be used to enumerate installed software versions or identify missing patches, regardless of how the scan is otherwise configured.
- ✗
Changing server hostnames randomly
Why it's wrong here
Randomizing server hostnames changes only a cosmetic network identifier used for DNS and inventory labeling; it does not alter what packages are installed, what permissions the scanner account holds, or what protocol the scan uses, so it has no effect on the accuracy of vulnerability findings.
Go deeper
Related to this question
Learn chapter
Network Traffic Analysis
Key term
Vulnerability
A vulnerability is a weakness in a system, network, or software that could be exploited by a threat to cause harm or unauthorized access.
Key term
Vulnerability scanner
A vulnerability scanner is an automated tool that identifies security weaknesses in systems, networks, and applications by comparing their configurations and software versions against known vulnerability databases.
About these practice questions
This CS0-004 question is part of Courseiva's 236-question bank — original exam-style content with full explanations and wrong-answer analysis, never real exam questions or exam dumps. Learn why practice questions differ from exam dumps →
JA
Written by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
This CS0-004 practice question is part of Courseiva's free CompTIA 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 CS0-004 exam.