- A
Identify the network interface → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Save and restart the network service
This order is correct because you must first know which interface to configure, then edit its configuration file to add the static route parameters, save the changes, and finally restart the network service to apply them.
- B
Restart the network service → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Identify the network interface
Why wrong: This order is incorrect because restarting the network service before editing the configuration file would not apply the changes, and identifying the interface should be done first.
- C
Edit the interface configuration file → Add GATEWAY and NETMASK directives → Restart the network service → Identify the network interface
Why wrong: This order is incorrect because you need to identify the network interface before editing its configuration file; otherwise, you might edit the wrong file.
- D
Identify the network interface → Restart the network service → Edit the interface configuration file → Add GATEWAY and NETMASK directives
Why wrong: This order is incorrect because restarting the network service before editing the configuration file would not apply the new route, and the changes would be lost after the restart.
EX200 Operate running systems Practice Question
This EX200 practice question tests your understanding of operate running systems. This is a configuration task: choose the command set that satisfies every stated requirement. Small differences — like 'secret' vs 'password' or 'transport input ssh' vs 'all' — change whether the answer is correct. 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.
Arrange the steps to configure a static IPv4 route in Red Hat Enterprise Linux.
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
Identify the network interface → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Save and restart the network service
Static routes in RHEL are configured in interface configuration files by specifying GATEWAY and NETMASK, then restarting the network service.
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.
- ✓
Identify the network interface → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Save and restart the network service
Why this is correct
This order is correct because you must first know which interface to configure, then edit its configuration file to add the static route parameters, save the changes, and finally restart the network service to apply them.
Related concept
CIDR notation defines the prefix length.
- ✗
Restart the network service → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Identify the network interface
Why it's wrong here
This order is incorrect because restarting the network service before editing the configuration file would not apply the changes, and identifying the interface should be done first.
- ✗
Edit the interface configuration file → Add GATEWAY and NETMASK directives → Restart the network service → Identify the network interface
Why it's wrong here
This order is incorrect because you need to identify the network interface before editing its configuration file; otherwise, you might edit the wrong file.
- ✗
Identify the network interface → Restart the network service → Edit the interface configuration file → Add GATEWAY and NETMASK directives
Why it's wrong here
This order is incorrect because restarting the network service before editing the configuration file would not apply the new route, and the changes would be lost after the restart.
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 EX200 subnetting questions on CIDR, address ranges, and subnet selection.
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Operate running systems — study guide chapter
Learn the concepts, then practise the questions
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FAQ
Questions learners often ask
What does this EX200 question test?
Operate running systems — This question tests Operate running systems — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Identify the network interface → Edit the interface configuration file → Add GATEWAY and NETMASK directives → Save and restart the network service — Static routes in RHEL are configured in interface configuration files by specifying GATEWAY and NETMASK, then restarting the network service.
What should I do if I get this EX200 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 EX200 subnetting questions on CIDR, address ranges, and subnet selection.
What is the key concept behind this question?
CIDR notation defines the prefix length.
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Last reviewed: Jun 11, 2026
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