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NEW QUESTION # 17
Users are unable to reach an application. The BIG-IP Administrator checks the Configuration Utility and observes that the Virtual Server has a red diamond in front of the status. What is causing this issue?
Answer: D
Explanation:
In the BIG-IP Configuration Utility, the status icon (shape and color) provides immediate feedback on why a virtual server is not working as expected81. A "Red Diamond" indicates that the object is "Offline" and unavailable to process traffic82. For a virtual server, this specific status typically means it has inherited an offline state from its mandatory backend resources8383. If all pool members associated with the virtual server have failed their health monitors, the virtual server will transition to a red diamond status because it has no healthy destination for incoming requests. This is distinct from a "Black Circle," which would indicate the virtual server has been manually "Disabled" by an administrator85858585. To troubleshoot a red diamond, the administrator must examine the associated pool and its members to determine why the health monitors are failing (e.g., server crashes, network path failures, or incorrect monitor strings). Resolving the health check failures on the pool members will return the virtual server to an "Available" (Green) status.
NEW QUESTION # 18
Pool /Common/testpool member /Common/10.120.0.5:8090 monitor status down. [ /Common/http: up, /Common/http2: down; last error: ] [ was up for lhr:0min:43sec ] Why is this pool member being marked down?
Answer: C
Explanation:
This log entry indicates that multiple monitors are assigned to the pool member, and the member is failing one of them.
Understanding Monitor Logic: By default, if multiple monitors are assigned to a pool or pool member without a "Minimum To Up" (Availability Requirement) setting, the system requires all monitors to pass for the member to be marked "Up".
Analyzing the Log: The log clearly states: [ /Common/http: up, /Common/http2: down; ... ]. This means the standard HTTP monitor is successful, indicating the member is serving HTTP traffic, but the http2 monitor has failed.
Conclusion: Since the http monitor is "up" but the member as a whole is "down," we can conclude the member is successfully responding to standard HTTP requests but not HTTP2 requests. Therefore, the member is currently only serving standard HTTP traffic.
NEW QUESTION # 19
Plaintext
warning tmm[<pid>]: 011e0002:4: sweeper_segment_cb_any: Aggressive mode /Common/default-eviction- policy activated (0) (global memory). (345209/690176 pages) warning tmm[<pid>]: 011e0003:4: Aggressive mode sweeper: /Common/default-eviction-policy (0) (global memory) 1 Connections killed What is happening when the BIG-IP Administrator sees the messages in the LTM log displayed above? (Pick the 2 correct responses below)
Answer: A,D
Explanation:
These log messages indicate that the BIG-IP system is under significant resource pressure and has activated its Adaptive Connection Management.
* Global Eviction Policy: The message Aggressive mode ... activated (global memory) confirms that the system has reached a memory utilization threshold that triggers the eviction policy. This happens because TMM (the data plane) is running low on available memory pages.
* Sweeper/Reaping: Once in "Aggressive mode," the BIG-IP "sweeper" starts reaping (terminating) connections to free up memory. The log Connections killed confirms this is occurring.
* Impact: The system does not drop all connections; it targets connections based on the eviction policy (e.g., oldest connections or those exceeding limits) to bring memory usage back to safe levels. Thus, some connections will be dropped (Option A), and the cause is TMM memory exhaustion (Option C).
NEW QUESTION # 20
Refer to the exhibit.
A BIG-IP Administrator needs to deploy an application on the BIG-IP system to perform SSL offload and re-encrypt the traffic to pool members. During testing, users are unable to connect to the application.
What must the BIG-IP Administrator do to resolve the issue? (Choose one answer)
Answer: C
Explanation:
To successfully perform SSL offload and re-encryption on a BIG-IP system, the virtual server must be configured with both a Client SSL profile and a Server SSL profile. The Client SSL profile enables BIG-IP to decrypt inbound HTTPS traffic from clients, while the Server SSL profile is required to re-encrypt traffic before forwarding it to the pool members.
From the exhibit, the virtual server has a Client SSL profile configured, which allows BIG-IP to accept HTTPS connections from clients. However, there is no Server SSL profile attached, meaning BIG-IP attempts to send unencrypted HTTP traffic to pool members listening on HTTPS (port 443). This protocol mismatch causes the server-side SSL handshake to fail, resulting in users being unable to connect to the application.
This behavior is well documented in BIG-IP SSL troubleshooting guides: when backend servers expect HTTPS, a Server SSL profile is mandatory to establish a secure connection from BIG-IP to the pool members.
The other options are incorrect:
Removing the Client SSL profile (Option A) would break client-side HTTPS.
The server-side TCP profile (Option B) is unrelated to SSL encryption.
Forward Proxy (Option C) is only used for outbound SSL inspection scenarios.
Therefore, configuring an SSL Profile (Server) is the correct and required solution.
NEW QUESTION # 21
Refer to the exhibit.
A user with IP address 192.168.162.70 is unable to connect to an HTTP application. What is a possible cause within the Virtual Server configuration?
Answer: D
Explanation:
The failure to connect is caused by a restrictive Source Address filter configured on the Virtual Server.
Source Address Filtering: In the BIG-IP system, the Source Address field on a Virtual Server acts as an implicit Access Control List (ACL). Only traffic originating from a client IP address that matches the specified network range will be accepted and processed by the Virtual Server.
Analyzing the Exhibit: The provided configuration for vs_http shows the Source Address is set to 10.128.10.0/24. This means the Virtual Server will only accept connections from the subnet ranging from 10.128.10.1 to 10.128.10.254.
Identifying the Conflict: The user trying to connect has the IP address 192.168.162.70. Since 192.168.162.70 does not fall within the allowed 10.128.10.0/24 range, the BIG-IP system will not match this traffic to the Virtual Server, effectively blocking the connection attempt.
Evaluation of Other Options:
All Ports (Option A): Configuring a Virtual Server for "All Ports" (port 0) allows it to handle traffic for any destination port, which would not block a standard HTTP application.
Destination Address (Option B): The destination address 192.168.162.80 is the Virtual IP (VIP) users should be connecting to; this is a standard configuration and not the cause of the failure for a user reaching out to it.
Standard Type (Option C): A "Standard" Virtual Server is the most common type used for HTTP applications as it allows for Layer 7 profiles and full proxy capabilities.
NEW QUESTION # 22
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