- A
systemctl disable servicename
disable prevents the service from starting at boot.
- B
systemctl stop servicename
Why wrong: stop only stops the service; it will still start on reboot.
- C
systemctl remove servicename
Why wrong: There is no remove option; use 'disable' or 'mask'.
- D
systemctl mask servicename
Why wrong: mask makes the service impossible to start, but is more aggressive.
Question 178 of 1,000
200-201 Host-Based Analysis Practice Question
This 200-201 practice question tests your understanding of host-based analysis. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. 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.
An analyst is examining a Linux server and notices an unusual systemd service that starts automatically. Which command would be used to disable this service?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue:
"which command"Why it matters: Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
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
✓
systemctl disable servicename
The 'systemctl disable' command prevents a service from starting automatically at boot.
Key principle: Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✓
systemctl disable servicename
Why this is correct
disable prevents the service from starting at boot.
Clue confirmation
The clue word "which command" in the question point toward this answer.
Related concept
CIDR notation defines the prefix length.
- ✗
systemctl stop servicename
Why it's wrong here
stop only stops the service; it will still start on reboot.
- ✗
systemctl remove servicename
Why it's wrong here
There is no remove option; use 'disable' or 'mask'.
- ✗
systemctl mask servicename
Why it's wrong here
mask makes the service impossible to start, but is more aggressive.
Common exam traps
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Detailed technical explanation
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
Key takeaway
Count usable hosts — not total addresses — and remember that the network and broadcast addresses are not available to hosts in standard IPv4 subnets.
Real-world example
How this comes up in practice
A network engineer segments a warehouse floor into three subnets: 20 scanners, 5 printers, and 2 management hosts. Picking the wrong mask wastes addresses or leaves too few usable hosts. Exam questions test whether you can apply CIDR notation, calculate block size, and identify the correct usable-host range for a given prefix.
What to study next
Got this wrong? Here's your next step.
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 200-201 subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Questions learners often ask
What does this 200-201 question test?
Host-Based Analysis — This question tests Host-Based Analysis — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: systemctl disable servicename — The 'systemctl disable' command prevents a service from starting automatically at boot.
What should I do if I get this 200-201 question wrong?
Review block sizes, usable host formulas (2^n − 2), and how to find network and broadcast addresses for /24 through /30. Then practise related 200-201 subnetting questions on CIDR, address ranges, and subnet selection.
Are there clue words in this question I should notice?
Yes — watch for: "which command". Tests specific CLI syntax. Recall the exact command and its required context — near-synonyms and partial matches are common distractors.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jul 4, 2026
This 200-201 practice question is part of Courseiva's free Cisco 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 200-201 exam.
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