F5-CTS-LTM BIG-IP Local Traffic Manager Practice Question
An administrator implements Priority Group Activation on a pool containing four web servers. Two servers are assigned priority 10, and two servers are assigned priority 5. The minimum active members parameter is set to 2. One priority 10 member fails. What is the precise traffic distribution behavior of the BIG-IP system?
⚠ Common exam trap
Candidates assume that lower-priority groups remain completely idle until all higher-priority members fail, ignoring the minimum active members threshold rule.
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
✓
Traffic is balanced exclusively between the single remaining priority 10 member and the two priority 5 members.
Priority Group Activation directs traffic to the highest available priority group until the number of active members in that group drops below the specified minimum active members threshold. When one priority 10 member fails, one remains active, which is below the minimum threshold of 2, triggering activation of the lower priority group while keeping the remaining priority 10 member active.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Traffic ceases entirely for all pool members until administrators manually intervene and adjust the priority group thresholds via TMOS.
Why it's wrong here
Priority Group Activation never halts traffic entirely unless all pool members across all priority groups fail health monitors. The system is designed for automated failover and graceful degradation, maintaining availability through backup nodes.
- ✓
Traffic is balanced exclusively between the single remaining priority 10 member and the two priority 5 members.
Why this is correct
When active priority 10 members fall below the minimum active threshold of 2, the BIG-IP system activates the priority 5 group while continuing to utilize the surviving priority 10 member, combining active members from both groups according to the load balancing algorithm.
- ✗
Traffic distribution shifts completely to the two priority 5 servers, and the remaining priority 10 server is taken offline immediately.
Why it's wrong here
Activation of a lower priority group does not disable healthy members in higher priority groups; instead, the system pools available resources from both the degraded higher group and the newly activated lower group.
- ✗
Traffic is distributed strictly among the two priority 5 servers while the remaining priority 10 server acts as a standby hot spare.
Why it's wrong here
Priority groups do not act as exclusive standby spares unless the minimum active members threshold is set to zero and all higher priority nodes fail completely, which differs from standard partial group activation behavior.
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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.