- A
Use a chatbot to broadcast updates without a commander
Why wrong: Without a commander, teams may still work in silos.
- B
Have each team work independently and report after resolution
Why wrong: Lack of coordination leads to inefficiency and potential conflicts.
- C
Escalate to the VP of Engineering to make decisions
Why wrong: Escalation to senior management may delay response; the incident commander should be empowered.
- D
Assign a single incident commander to coordinate all teams
The incident commander delegates tasks and ensures coordinated response.
Question 33 of 1,000
PCDE Practice Question: Applying Site Reliability Engineering Practices to a Service
This PCDE practice question tests your understanding of applying site reliability engineering practices to a service. The scenario asks you to isolate a root cause — eliminate options that address a different problem before choosing. 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 an incident, the incident commander notices that multiple teams are working on the same issue without coordination. Which structure should be implemented to improve incident response?
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
✓
Assign a single incident commander to coordinate all teams
An incident command system (ICS) establishes a clear hierarchy with an incident commander who coordinates teams, assigns roles (e.g., operations lead, communications lead), and ensures focused response.
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.
- ✗
Use a chatbot to broadcast updates without a commander
Why it's wrong here
Without a commander, teams may still work in silos.
- ✗
Have each team work independently and report after resolution
Why it's wrong here
Lack of coordination leads to inefficiency and potential conflicts.
- ✗
Escalate to the VP of Engineering to make decisions
Why it's wrong here
Escalation to senior management may delay response; the incident commander should be empowered.
- ✓
Assign a single incident commander to coordinate all teams
Why this is correct
The incident commander delegates tasks and ensures coordinated response.
Related concept
CIDR notation defines the prefix length.
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.
Trap categories for this question
Command / output trap
Without a commander, teams may still work in silos.
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 company's IT admin needs to give a contractor read-only access to production logs without sharing account credentials. Using role-based access control (RBAC) and temporary scoped permissions — not a permanent shared password — is the correct pattern. Questions like this test whether you can apply least-privilege access across cloud identity services.
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 PCDE subnetting questions on CIDR, address ranges, and subnet selection.
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FAQ
Questions learners often ask
What does this PCDE question test?
Applying Site Reliability Engineering Practices to a Service — This question tests Applying Site Reliability Engineering Practices to a Service — CIDR notation defines the prefix length..
What is the correct answer to this question?
The correct answer is: Assign a single incident commander to coordinate all teams — An incident command system (ICS) establishes a clear hierarchy with an incident commander who coordinates teams, assigns roles (e.g., operations lead, communications lead), and ensures focused response.
What should I do if I get this PCDE 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 PCDE 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: Jul 4, 2026
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