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NEW QUESTION # 68
Without decrypting, what portion of an HTTPS session is visible with a packet capture? (Choose one answer)
Answer: B
Explanation:
In an HTTPS session, the application-layer payload--including HTTP request headers, response headers, cookies, and body content--is encrypted using SSL/TLS. Without decrypting the traffic (for example, without SSL offloading on BIG-IP or access to the private keys), a packet capture cannot reveal any HTTP-level details.
However, network-layer and transport-layer information remains visible, even when encryption is used. This includes source and destination IP addresses, source and destination ports, TCP flags, sequence numbers, and TLS handshake metadata. Therefore, thesource IP address (Option B) is visible in a packet capture of HTTPS traffic without decryption.
NEW QUESTION # 69
A BIG-IP Administrator receives reports from users that SSL connections to the BIG-IP device are failing. Upon checking the log files, the administrator notices: SSL transaction (TPS) rate limit reached. stats show a maximum of 1200 client-side SSL TPS and 800 server-side SSL TPS.
What is the minimum SSL license limit required to handle this peak?
Answer: B
Explanation:
Troubleshooting failed SSL handshakes involves interpreting the resource limits defined by the system's license. The log message SSL transaction (TPS) rate limit reached indicates the BIG-IP is dropping SSL connections because it has exceeded its licensed "Transactions Per Second" capacity. When analyzing stats to determine the correct license level, the administrator must focus on "Client- side" SSL TPS. This represents the initial encrypted handshakes between users and the BIG-IP virtual servers91. In this scenario, the peak client-side demand is 1200 TPS.
While the 800 server-side transactions represent re-encryption toward the backend, F5's primary SSL TPS license limits typically apply to the client-facing side of the traffic flow. Therefore, to resolve the intermittent connectivity issues and ensure the virtual server works reliably during peaks, the license must be upgraded to at least 1200 TPS. Confirming this peak via statistics andcomparing it to the current license is a standard troubleshooting step for SSL performance issues.
NEW QUESTION # 70
Users report that traffic is negatively affected every time a BIG-IP device fails over. The traffic becomes stabilized after a few minutes. What should the BIG-IP Administrator do to reduce the impact of future failovers?
Answer: A
Explanation:
When a virtual server's traffic flow is disrupted only during failover events and takes several minutes to stabilize, the issue is typically related to the ARP cache on upstream network devices47. By default, each BIG-IP in an HA pair uses its own unique hardware MAC address for traffic4848. When a failover occurs, the new active device takes over the floating IP addresses, but the upstream switch may still have the MAC address of the old device cached4949. Traffic fails until the switch's ARP entry is updated. "MAC Masquerade" is a troubleshooting feature that assigns a shared, virtual MAC address to the floating traffic group. Regardless of which BIG-IP is currently active, it will use this masqueraded MAC address for all traffic related to that group52. Because the MAC address seen by the network never changes during a failover, the upstream devices do not need to relearn ARP entries, resulting in an instantaneous transition and eliminating the performance drop reported by users
NEW QUESTION # 71
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?
Answer: C
Explanation:
Comprehensive and Detailed Explanation From BIG-IP Administration Support and Troubleshooting documents: 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.
NEW QUESTION # 72
Where should the BIG-IP Administrator go in the GUI to verify the status of pool members of a pool?
Answer: B
Explanation:
To verify the specific health and availability status of individual members within a specific pool, the administrator must navigate to the Members tab of that specific pool.
* Navigation Path: The correct path is Local Traffic > Pools > Pool List, then clicking on the name of the <pool_in_question>, and finally selecting the Members tab. This screen provides a granular view of each member's IP address, port, and their current status (indicated by the colored icons: Green, Red, Yellow, or Blue).
* Why Option A is correct: While you can see a general status summary on the Pool List page (Option B), that page only shows the status of the pool as a whole. To troubleshoot why a pool is not working or to see which specific member is down, you must drill down into the Members tab.
* Evaluation of Other Options:
* Local Traffic -> Pools (Option B): This leads to the Pool List. It shows the aggregate status of all pools but does not list individual member details or their specific monitor results without further clicking.
* Local Traffic -> Virtual Servers -> Statistics (Option C): This path shows traffic statistics (bits in/out, connections) for virtual servers, not the health monitor status of individual pool members.
* Local Traffic -> Nodes (Option D): While this shows the health of the underlying IP address (Node), it does not show the status of the specific service (Port/Member) within a pool. A Node might be "Up" (ICMP), while the Pool Member is "Down" (HTTP failure).
NEW QUESTION # 73
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