F5-CTS-LTM BIG-IP Local Traffic Manager Practice Question
Exhibit
tmsh show ltm pool web_pool -------------------------------------------------- Ltm::Pool: web_pool -------------------------------------------------- Status Availability : offline State : enabled Reason : The pool does not have any available members Available Members: 0 Total Members : 2
Refer to the exhibit. An administrator checks the status of 'web_pool' and observes the output shown. What is the most likely cause for the pool being offline?
⚠ Common exam trap
Candidates often blame the virtual server configuration itself when a pool is down. They fail to recognize that the pool status is an independent health indicator that dictates the VIP's availability.
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
✓
The health monitors assigned to the pool members are failing.
The output indicates that the pool is offline because all members are unavailable. In LTM, a pool's availability status is determined by the health of its members. When all monitors fail or the members are manually disabled, the pool enters an offline state. This is a fundamental concept for troubleshooting service outages, as it immediately identifies that the issue lies with the backend servers rather than the VIP.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
The Virtual Server associated with the pool is disabled.
Why it's wrong here
Disabling a virtual server prevents traffic from reaching the pool, but it does not change the availability status of the pool itself. The pool's status is independent of the virtual server; checking the virtual server would be a separate troubleshooting step from examining the underlying pool status.
- ✓
The health monitors assigned to the pool members are failing.
Why this is correct
The 'Available Members: 0' status confirms that all associated monitors are failing. The BIG-IP marks pool members as down when they fail to respond to probes, causing the pool to report an offline status. This typically points to server-side issues, network connectivity problems, or incorrect monitor settings.
- ✗
The load balancing method is set to Round Robin.
Why it's wrong here
The load balancing method, such as Round Robin, determines how traffic is distributed among available pool members. It does not affect the health status or availability of the pool members themselves. Changing the load balancing method will not resolve an 'offline' state caused by failing health monitors.
- ✗
The license for the LTM module has expired.
Why it's wrong here
An expired license would typically affect the entire BIG-IP system's functionality, including the ability to pass traffic at all. It would not manifest specifically as a pool showing zero available members while other system configurations remain visible and intact within the tmsh interface during administrative troubleshooting.
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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.