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| Certification Vendor: | F5 Networks |
|---|---|
| Exam Name: | BIG-IP Administrator |
| Exam Number: | 101 |
| Exam Duration: | 90 minutes |
| Exam Format: | Scenario-based, Multiple Choice |
| Related Certifications: | F5 Certified Solution Expert - Security F5 Certified Solution Expert - LTM |
| Passing Score: | 70% |
| Exam Price: | USD $160 |
| Certificate Validity Period: | 2 years |
| Available Languages: | Japanese, English |
| Real Exam Qty: | 80 |
| Sample Questions: | F5 F5CAB5 Sample Questions |
| Exam Way: | Online proctored or at Pearson VUE testing center |
| Pre Condition: | F5 recommends completing F5 BIG-IP Administrator certification training or having equivalent hands-on experience with BIG-IP LTM |
| Official Syllabus URL: | https://support.f5.com/csp/education-certification |
JPTestKingお客様にさまざまな種類のF5CAB5練習用トレントを提供して学習させ、知識の蓄積と能力の向上を支援したいと考えています。 また、F5CAB5学習ガイドを使用して、すべてのユーザーの質問に最短時間で専門家が回答できることを保証します。 もう1つ、散発的な時間を最大限に活用して知識と情報を吸収するお手伝いをします。 つまりF5、F5CAB5試験対策を目指している他の類似企業と比較して、当社の製品のサービスと品質は、BIG-IP Administration Support and Troubleshootingお客様と潜在的なクライアントから高く評価されています。
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質問 # 34
A device group is currently in theChanges Pendingsync status. How can the BIG-IP Administrator determine which member of the device group has the most recent configuration? (Choose one answer)
正解：A
解説：
When a BIG-IP device group shows a Changes Pending status, it indicates that one or more devices in the group have configuration changes that have not yet been synchronized to the other members. To identifywhich device has the most recent (authoritative) configuration, the administrator must view the detailed synchronization status at thedevice group level.
The correct location is Device Management > Device Groups (Option D). Within this menu, the BIG-IP Configuration Utility displays each device group along with its synchronization status and provides details about which device has pending changes. From this view, the administrator can clearly see which device is marked as havingchanges pending, making it the source device that should be used to initiate a Sync to Groupoperation.
質問 # 35
A gateway_icmp health monitor is configured on a pool. The BIG-IP Administrator is investigating why the pool is reported as down while the server is online. Other pools with servers in the same subnet are correctly monitored. What can cause this behavior? (Choose one answer)
正解：C
解説：
A gateway_icmp monitor checks basic network reachability by sending ICMP echo requests (pings) to the pool member or its gateway. If the pool is marked DOWN while the server is confirmed to be online, the most likely cause is that ICMP traffic is being blocked.
Ahost-based firewall active on the server (Option C)can block ICMP echo requests or replies, preventing BIG-IP from receiving a successful response to the health check. This results in the monitor failing and the pool member being marked down, even though the server and application are otherwise functioning normally. This explanation is consistent with the scenario where other servers in the same subnet work correctly, indicating that routing and BIG-IP configuration are not the issue.
質問 # 36
A BIG-IP Administrator observes the following pool member status message:
Pool /Common/testpool member /Common/10.120.0.5:8090 monitor status
down
[/Common/http: up, /Common/http2: down; last error:]
Why is this pool member being marked down? (Choose one answer)
正解：C
解説：
The pool member is marked DOWN because it is monitored by multiple health monitors, specifically an HTTP monitor and an HTTP/2 monitor. The status message clearly shows that the HTTP monitor is UP, while the HTTP/2 monitor is DOWN. In BIG-IP, when multiple monitors are assigned to a pool member, the default behavior is AND logic, meaningall assigned monitors must succeed for the pool member to be considered healthy.
In this scenario, the server is responding successfully to standard HTTP (likely HTTP/1.1) requests but does not support or respond correctly to HTTP/2 requests. As a result, the HTTP/2 monitor fails, which causes the overall monitor status to be DOWN, even though HTTP traffic itself is working.
This behavior is expected and documented in BIG-IP monitoring logic. Unless the monitor rule is explicitly changed to"at least one of", a single failing monitor will mark the pool member down.
Therefore, the correct conclusion is that the pool member isonly serving HTTP traffic, not HTTP/2.
The resolution would be to either remove the HTTP/2 monitor, correct the application to support HTTP/2, or adjust the monitor rule to match the intended health-check logic.
質問 # 37
resume is enabled and a health check first fails and then passes?
正解：C
解説：
Comprehensive and Detailed Explanation From BIG-IP Administration Support and Troubleshooting documents: The "Manual Resume" feature is a safety mechanism used when a pool is not working as expected due to flapping services or unstable backend applications. Normally, when a health monitor fails, the pool member is marked "Offline" (Red), and when the monitor passes, it automatically returns to "Available" (Green)47. However, if "Manual Resume" is enabled, the BIG-IP will not automatically put the member back into rotation after a failure48. Even if the health check begins to pass again, the member remains in an "Offline (Disabled)" state49. This requires an administrator to manually intervene and re-enable the member. This is a common point of confusion when troubleshooting; a member may show passing health checks but still not receive traffic because it is waiting for a manual administrative "resume" command. This feature is intended to prevent "unhealthy" servers from receiving traffic until an engineer has confirmed the root cause of the initial failure was resolved.
質問 # 38
A BIG-IP Administrator uses backend servers to host multiple services per server. There are multiple virtual servers and pools defined, referencing the same backend servers. Which load balancing algorithm is most appropriate to have an equal number of connections on each backend server?17
正解：C
解説：
Comprehensive and Detailed Explanation From BIG-IP Administration Support and Troubleshooting documents: When load balancing is not working as 23expected and connections appear skewed across physical hardware, the administrator must distinguish between "member"24 and "node" level balancing. A "member" refers to a specific IP and Port combination (e.g., 10.1.1.1:80), whereas a "node" refers to the underlying IP address (10.1.1.1) regardless of the port25. If a single server hosts multiple services (Web, FTP, API) across different pools, using "Least Connections (member)" would only balance connections within each individual pool26. This could lead to a scenario where one server is overwhelmed because it is winning the "least connections" count in three different pools simultaneously. By selecting "Least Connections (node)," the BIG-IP tracks the total number of concurrent connections to the physical IP address across all pools it belongs to27. This ensures that the administrator can maintain an equal distribution of work across the hardware, preventing performance degradation on backend servers that host multiple application services.
質問 # 39
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