F5-CTS-LTM BIG-IP Local Traffic Manager Practice Question
Which load balancing method is most appropriate for a pool where servers have significantly different hardware specifications and processing capabilities?
⚠ Common exam trap
Candidates often select 'Least Connections' for hardware-mismatched servers, assuming it accounts for processing power, when it actually only tracks the number of active connections regardless of server capacity.
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
✓
Ratio
When pool members have varying hardware specs, simple algorithms like Round Robin perform poorly because they send equal traffic to all servers regardless of their ability to handle it. 'Ratio' load balancing allows the administrator to assign a weight to each server, ensuring more powerful servers receive a higher proportion of traffic, which optimizes overall application performance and prevents the saturation of weaker servers.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Round Robin
Why it's wrong here
Round Robin distributes traffic equally among all servers in the pool. It assumes that all servers have identical capacity and performance profiles. Using this method in a heterogeneous environment will cause weaker servers to be overwhelmed while stronger servers remain underutilized, leading to performance degradation for end users.
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Least Connections
Why it's wrong here
Least Connections sends traffic to the server with the fewest active connections. While helpful, it still doesn't account for hardware differences; a server with more connections might be stronger and still have plenty of capacity, or a weak server might be overwhelmed even with few active connections.
- ✓
Ratio
Why this is correct
Ratio load balancing allows administrators to assign a weight to each server. Servers with higher hardware capacity can be assigned a higher ratio, meaning they will receive a larger portion of the total traffic load, which prevents weaker servers from becoming bottlenecks in a mixed-hardware environment.
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Observed
Why it's wrong here
Observed load balancing is a dynamic algorithm that tracks the performance of servers over time. While it adapts to load, it is generally less predictable and efficient than static Ratio-based load balancing for intentionally managing traffic based on known hardware differences, and it introduces unnecessary complexity into the configuration.
About these practice questions
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JA
Written and reviewed by Johnson Ajibi, MSc IT Security
Senior Network & Security Engineer · founder of Courseiva
Last reviewed September 2026 · checked against the official F5 exam blueprint
This F5-CTS-LTM practice question is part of Courseiva's free F5 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 F5-CTS-LTM exam.