サンプル問題 1： A BIG-IP Administrator needs to determine why only one pool member is showing connections from the virtual server, resulting in uneven load balancing. What two reasons would cause uneven load balancing? (Choose two answers)
A: The virtual server is marked down.
B: Monitors have marked down multiple pool members.
C: The pool has a persistence profile configured.
D: All pool members are marked down.
正解：B, C
Explanation: Uneven load balancing on a BIG-IP system typically occurs when traffic is not distributed evenly across all available pool members. One common reason is that monitors have marked down multiple pool members (Option B). When health monitors fail for specific pool members, BIG-IP automatically removes those members from load-balancing decisions. As a result, traffic is sent only to the remaining healthy member, creating the appearance that load balancing is not functioning correctly. This behavior is expected and aligns with BIG-IP’s design to ensure traffic is sent only to healthy resources. Another frequent cause is the presence of a persistence profile on the pool or virtual server (Option C). Persistence (such as source address or cookie persistence) forces subsequent client connections to be sent to the same pool member for session continuity. While persistence is critical for certain applications, it can override the load-balancing algorithm and cause most or all traffic to be directed to a single pool member, especially during low traffic volumes or testing scenarios. The other options are incorrect because a virtual server marked down (Option A) would not pass traffic at all, and all pool members marked down (Option D) would result in no connections rather than uneven distribution. This analysis follows standard BIG-IP troubleshooting methodology using pool status, monitor results, and persistence configuration review
サンプル問題 2： A BIG-IP Administrator plans to upgrade a BIG-IP device to the latest TMOS version. Which two tools could the administrator leverage to verify known issues for the target versions? (Choose two answers)
A: F5 End User Diagnostics (EUD)
B: F5 Bug Tracker
C: F5 University
D: F5 iHealth
E: F5 Downloads
正解：B, D
Explanation: Before upgrading a BIG-IP system to a newer TMOS version, it is critical to review known issues to avoid introducing instability or regressions. F5 Bug Tracker (Option B) is a primary resource for this purpose. It allows administrators to search for documented software defects by TMOS version, module, symptom, or bug ID. Using Bug Tracker, an administrator can identify unresolved issues, fixed bugs, and behavioral changes that may affect their specific deployment, such as traffic handling, high availability, or module-specific functionality. This directly supports proactive troubleshooting and informed upgrade planning. F5 iHealth (Option D) is another essential tool used during upgrade preparation. iHealth analyzes uploaded UCS or QKView files and correlates the device configuration and software version with F5’s known issues database. It provides actionable reports highlighting critical defects, upgrade risks, interoperability concerns, and recommended target versions. iHealth is especially valuable because it contextualizes known issues based on the actual configuration running on the device. The other options are not appropriate for verifying known software issues. F5 End User Diagnostics (Option A) is a client-side troubleshooting tool, F5 University (Option C) is a training platform, and F5 Downloads (Option E) is primarily used to obtain software images and release notes, not to analyze known defects in depth.
サンプル問題 3： A BIG-IP Administrator needs to collect HTTP status code and HTTP method for traffic flowing through a virtual server. Which default profile provides this information? (Choose one answer)
A: Request Adapt
B: HTTP
C: Analytics
D: Statistics
正解：C
Explanation: To collect application-layer details such as HTTP status codes (200, 404, 500, etc.) and HTTP methods (GET, POST, PUT, DELETE), the BIG-IP system must use a profile designed for traffic visibility and reporting rather than basic traffic handling. The Analytics profile (Option C) is the correct choice because it is specifically designed to collect, store, and present detailed statistics about HTTP and TCP traffic passing through a virtual server. When an Analytics profile is attached to a virtual server, BIG-IP can record metrics such as HTTP response codes, request methods, URI paths, latency, throughput, and client-side/server-side performance data. These statistics are then accessible through the BIG-IP GUI under Statistics → Analytics, allowing administrators to validate application behavior and troubleshoot performance or functional issues. The HTTP profile (Option B) enables HTTP protocol awareness and features like header insertion and compression, but it does not provide historical or statistical reporting of HTTP methods and response codes. Request Adapt (Option A) is used for ICAP-based content adaptation, not visibility. Statistics (Option D) is not a standalone profile and does not provide HTTP-level insight. Therefore, the Analytics profile is the only default profile that fulfills this requirement.
F5 F5CAB5試験準備をしていますか？それとも自分は全部できそうです。復習する必要がないと思いますか？それとも自分は何もできないような気がします。どうすればいいでしょうか？実は、この問題を解決するのは難しくないです。勉強者がやるべきのは分解分析をマスターすることです。ここではF5CAB5問題集を使って学習中の課題を確認し、知識を整理してBIG-IP Administration Support and Troubleshooting試験の準備を進めます。
その次に、非常規の試験ポイントのテーマは多すぎてこだわる必要はなくて、重要な試験点のテーマはきっと知識の点をわかります。特にBIG-IP Administration Support and Troubleshooting試験は試験資料ポイントが多いです。一つの問題は知識ポイントだけではなく、復習する時はまとめをマスターして、記憶を分類します。知識ポイントが覚えていないか、間違えていないかのために点数をなくしてはいけません。
