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| Certification Vendor: | F5 Networks |
|---|---|
| Exam Name: | BIG-IP Administrator |
| Exam Number: | 101 |
| Related Certifications: | F5 Certified Solution Expert - LTM F5 Certified Solution Expert - Security |
| Real Exam Qty: | 80 |
| Exam Duration: | 90 minutes |
| Exam Format: | Multiple Choice, Scenario-based |
| Passing Score: | 70% |
| Certificate Validity Period: | 2 years |
| Available Languages: | English, Japanese |
| Exam Price: | USD $160 |
| 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 |
近來，F5的認證考試越來越受大家的歡迎。F5的認證資格也變得越來越重要。作為被 IT行業廣泛認可的考試，F5CAB5認證考試是F5中最重要的考試之一。取得了這個考試的認證資格，你就可以獲得很多的利益。如果你也想參加這個考試的話，Testpdf的F5CAB5考古題是你準備考試的時候不能缺少的工具。因为这是F5CAB5考试的最优秀的参考资料。
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問題 #49
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?
答案：D
解題說明：
To gather granular Layer 7 data such as specific HTTP methods (GET, POST, etc.) and HTTP status codes (200, 404, 500), the BIG-IP system utilizes the Analytics (AVR) profile.
* Analytics Profile (Application Visibility and Reporting): While a standard HTTP profile tracks basic byte counts and requests, the Analytics profile is designed specifically to capture, analyze, and display detailed application performance metrics.
* Metrics Captured: When attached to a virtual server, it records URL-level statistics, response codes, page load times, and client-side metrics.
* Why not others? * HTTP Profile (Option A): This profile handles the parsing of HTTP traffic but does not provide a built-in reporting dashboard for status code distribution.
* Statistics Profile (Option C): This is a legacy profile used for custom user-defined counters and does not automatically categorize HTTP methods or status codes.
* Request Adapt (Option D): This is used for integrating with ICAP servers (like virus scanners) and does not perform traffic reporting.
問題 #50
The BIG-IP Administrator is investigating disk utilization on the BIG-IP device. (Exhibit shows /dev/md4 mounted on / at 100% utilization). What should the BIG-IP Administrator check next?
答案：B
解題說明：
Monitoring resource utilization is essential for maintaining system stability. If the root (/) file system reaches
100% capacity, the BIG-IP may become unresponsive, fail to save configuration changes, or experience daemon crashes83. When the / partition is full, the immediate troubleshooting step is to identify large or unnecessary files-such as old log files, core dumps, or temporary installer files-located specifically within that file system84. In the provided exhibit, /dev/md4 is explicitly listed at 100% usage for the / mount point85. Checking other partitions like /usr (which is at 82% in the exhibit) would not resolve the immediate
"Full" status of the root directory86. Administrators often use the du (disk usage) command via the CLI to find the problematic files. Managing disk space is a proactive task; however, when utilization hits 100%, it becomes a reactive troubleshooting emergency that must be resolved to restore the management plane's functionality.
問題 #51
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)
答案：D
解題說明：
To collect application-layer details such asHTTP status codes(200, 404, 500, etc.) andHTTP methods(GET, POST, PUT, DELETE), the BIG-IP system must use a profile designed for traffic visibility and reporting rather than basic traffic handling. TheAnalytics 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 underStatistics # Analytics, allowing administrators to validate application behavior and troubleshoot performance or functional issues.
TheHTTP 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.
問題 #52
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)
答案：A,D
解題說明：
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 thatmonitors 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 isthe 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.
問題 #53
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)
答案：A
解題說明：
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, meaning all 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 is only 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.
問題 #54
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