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| Section | Objectives |
|---|---|
| Topic 1: Monitoring and Troubleshooting Basics | - Logging and diagnostics
|
| Topic 2: System Administration and Operations | - Authentication and system services
|
| Topic 3: Control Plane Fundamentals | - High availability operations
|
| Topic 4: Maintenance and Lifecycle Operations | - Upgrades and updates
|
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NEW QUESTION # 29
Which command will provide the BIG-IP Administrator with the current device HA status? (Choose one answer)
Answer: A
Explanation:
Comprehensive and Detailed Explanation From BIG-IP Administration Control Plane Administration documents:
To determine the current failover (HA) status of a BIG-IP system using tmsh, F5 documentation explicitly states that the administrator should use the following command:
show /cm failover-status
This command displays:
The current failover state (active, standby, or offline)
Detailed failover status information
The operational HA condition of the device within a device group
According to F5 Knowledge Base Article K08452454, the documented procedure for checking failover status is:
Log in to the TMOS Shell (tmsh)
Run show /cm failover-status
Why the other options are incorrect:
A . list /cm failover shows configuration settings, not operational HA status.
B . show /sys failover is not the documented command for checking current failover status and does not align with F5's recommended procedure.
NEW QUESTION # 30
An LTM device has a virtual server mapped to www.f5.com. Users report that when they connect to /resources/201.1.2h.l_l.com they are unable to receive content. What is the likely cause of the issue?
Answer: A
Explanation:
The Control Plane is responsible for ARP (Address Resolution Protocol) management for Virtual Addresses. For a Virtual Server to be reachable, the BIG-IP must respond to ARP requests for that IP. If the "ARP" setting is disabled on the Virtual Address properties, upstream routers cannot resolve the MAC address of the BIG-IP, leading to connectivity failure even if the service itself is
"Available."
NEW QUESTION # 31
The BIG-IP Administrator suspects unauthorized SSH login attempts on the BIG-IP system.
Which log file would contain details of these attempts? (Choose one answer)
Answer: D
Explanation:
On BIG-IP systems, authentication and authorization events are logged in /var/log/secure. This includes:
Successful and failed SSH login attempts
Invalid user authentication attempts
PAM (Pluggable Authentication Module) authentication failures
Access denials related to secure services
NEW QUESTION # 32
A BIG-IP Administrator needs to check the memory utilization on a BIG-IP system. Which two methods can the BIG-IP Administrator use? (Choose two.)
Answer: C,D
Explanation:
Reporting device status includes monitoring physical resource exhaustion, such as memory. The Control Plane provides both a command-line method via TMSH (show /sys memory) and a graphical method under Statistics > Module Statistics > Memory to report on how memory is allocated across TMM and the Linux host. This is essential for identifying potential "Aggressive Mode" triggers or hardware performance bottlenecks.
NEW QUESTION # 33
A BIG-IP Administrator needs to verify system time synchronization. Where should this be checked?
Answer: A
Explanation:
Time synchronization is a critical component of Control Plane management, as it ensures that logs are accurately timestamped and that High Availability (HA) trust relationships remain valid1.
* Configuration Location: The list of configured NTP (Network Time Protocol) servers and their status is managed under System > Configuration > Device > NTP .
* Procedural Importance: If the system clock drifts significantly between two devices in an HA pair, the Control Plane may experience a "Time Delta" error33. This drift often causes a failure in device trust, preventing the ConfigSync process from functioning correctly.
* System Integrity: Accurate time is also essential for the validity of SSL/TLS certificates used for both administrative management access and high availability communication.
* Verification: Administrators can use this section of the Configuration Utility to confirm that the BIG- IP is communicating with its designated upstream time sources and that the local clock is correctly synchronized to the network environment .
NEW QUESTION # 34
......
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