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NEW QUESTION # 39
In the BIG-IP Configuration Utility, a user requests a single screen view to determine the status of all Virtual Servers and associated pool members, as well as any iRules in use. Where should the BIG-IP Administrator instruct the user to find this view?32
Answer: C
Explanation:
Comprehensive and Detailed Explanation From BIG-IP A41dministration Support and Troubleshooting documents:To confirm functionality across a complex environment, the "Network Map" is the most efficient troubleshooting tool in the Configuration Utility43. It provides a hierarchical, visual representation of the traffic management objects44. A single glance allows the administrator to see the status of a Virtual Server (Green/Red/Yellow), the status of its associated pool, the health of individual pool members, and which iRules are currently attached45. This view is superior to the standard "Virtual Server List" for troubleshooting because it maps the dependencies between objects46. For example, if a Virtual Server is "Red," the Network Map will show if that status is inherited from a failed pool or a specific monitor failing on a pool member.
Reviewing these basic stats in the Network Map helps the administrator quickly isolate whether a failure is at the service level (Virtual Server), the logic level (iRule), or the hardware level (Pool Member).
NEW QUESTION # 40
Which two methods should the BIG-IP Administrator troubleshoot a Pool-member that's been marked
"DOWN" by its Health Monitor? (Pick the 2 correct responses below)
Answer: A,C
Explanation:
When a health monitor marks a member "Down," the goal is to determine if the issue is at the network level or the application level.
* Monitor Logging (Option A): In the Pool Member configuration, an administrator can enable
"Monitor Logging". This generates a detailed text file in /var/log/monitors/ that shows the exact "Send" string sent by the BIG-IP and the exact "Receive" string (or lack thereof) returned by the server.
* TCPdump (Option C): This is the most definitive way to see if the monitor traffic is even leaving the BIG-IP and if the server is responding with a TCP RST (reset) or an ICMP unreachable message. A command such as tcpdump -ni <vlan> host <member_ip> and port <member_port> is standard for this task.
* Why not others? While the routing table (Option B) is useful for general connectivity, if other members in the same subnet are "Up," the routing is likely fine. Statistics (Option D) show that it is down but rarely why it is down at a protocol level.
NEW QUESTION # 41
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)
Answer: B
Explanation:
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.
NEW QUESTION # 42
Refer to the exhibit.
A pool member fails the monitor checks for about 30 minutes and then starts passing the monitor checks. New traffic is NOT being sent to the pool member. What is the likely reason for this problem? (Choose one answer)
Answer: D
Explanation:
In BIG-IP LTM, health monitors are used to determine if a pool member or node is "Up" and capable of processing traffic. Based on the provided exhibit, the specific configuration setting causing this behavior is Manual Resume.
Manual Resume (Enabled/Yes): When the Manual Resume setting is set to Yes, it changes the default behavior of how a pool member returns to service. Under normal circumstances (Manual Resume set to No), once a pool member starts passing its health check again, the BIG-IP system automatically marks it as "Up" and resumes sending traffic to it. However, with Manual Resume enabled, the system will continue to mark the pool member as "Down" (or "Unavailable") even after it passes the health check. It requires a manual intervention by an administrator to reset the status and allow traffic to flow again.
Exhibit Analysis: The screenshot clearly shows the Manual Resume radio button is selected as Yes. This explains why, even after the pool member "starts passing the monitor checks," it does not receive new traffic.
Incorrect Options Analysis:
Time Until Up (0 seconds): This setting defines how long a member must consistently pass health checks before being marked "Up." If it is set to 0, it should actually return to service immediately upon the first successful check.
The pool member is disabled: While a disabled member won't receive traffic, the question focuses on why passing a monitor check didn't restore service, which points specifically to the monitor configuration shown.
Monitor Type is TCP Half Open: This is simply the method used to check the service (sending a SYN and expecting a SYN-ACK, then sending a RST). It determines how the check is performed, not what happens after the check succeeds.
https://my.f5.com/manage/s/article/K83316932
NEW QUESTION # 43
Which tmsh command shows virtual server status?
Answer: A
NEW QUESTION # 44
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