F5-CTS-LTM BIG-IP Local Traffic Manager Practice Question
A virtual server is configured with a 'Least Connections' load balancing method. Under what specific scenario would this method be more effective than 'Round Robin'?
⚠ Common exam trap
Candidates often select 'Least Connections' for high-traffic environments regardless of request duration. They forget that this method is specifically meant to balance load based on processing time, not just connection count.
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
✓
When backend servers process requests with varying execution times.
Least Connections is ideal when backend servers handle requests of varying complexity or duration. Because it tracks active connections, it avoids sending new requests to a server that is already busy, whereas Round Robin blindly rotates through all servers. This ensures better distribution of load in environments where some requests take significantly longer to process, preventing any single server from becoming a bottleneck during traffic spikes.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
When all backend servers are identical in hardware specifications.
Why it's wrong here
If servers are identical and processing times are uniform, Round Robin is perfectly sufficient and requires less overhead than Least Connections. Least Connections is specifically designed to account for unequal processing times or connection durations, which is not the case in a perfectly homogeneous environment.
- ✗
When the application consists of simple, static web pages.
Why it's wrong here
For simple, static content, every request takes roughly the same amount of time. In this scenario, Round Robin provides an efficient, low-overhead distribution mechanism. Least Connections would add unnecessary monitoring overhead without providing any tangible performance benefit, as the connection load would naturally stay balanced regardless.
- ✓
When backend servers process requests with varying execution times.
Why this is correct
In applications where requests have different processing times, some servers may accumulate more active connections than others. Least Connections keeps track of these active sessions and directs new traffic to the server with the fewest connections, preventing overloaded servers from becoming overwhelmed while others remain idle.
- ✗
When the virtual server is configured with a high persistence timeout.
Why it's wrong here
Persistence focuses on session affinity rather than load distribution. If a high persistence timeout is set, the choice of load balancing method becomes less relevant for subsequent requests from the same client, as they are pinned to a specific server regardless of the current connection count.
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.