An administrator runs the command 'df -h' on a BIG-IP system and sees the following output for the /var filesystem: /dev/mapper/vg--ssd-lv--var 20G 19G 1.0G 95% /var. The BIG-IP is experiencing performance degradation and log writes are failing. What is the most likely cause of the performance issue?

The /var partition is mounted on a solid-state drive, which is causing I/O bottlenecks.

The filesystem is nearly full, leaving little space for new log entries and temporary files.

The filesystem is using LVM, which is inherently slower than a standard partition.

The system has too much free memory, causing the kernel to swap excessively.

A BIG-IP administrator is troubleshooting a memory issue. The 'free -m' output shows: total=16384, used=15000, free=200, shared=100, buff/cache=1184, available=1300. The administrator also runs 'top' and sees that the tmm process is using 80% of memory. The system is configured with 16GB RAM and 4GB swap. What is the most appropriate next step to address the memory pressure?

Investigate the tmm process to determine if the memory usage is expected based on the configured virtual servers and profiles.

Immediately reboot the system to clear the memory.

Increase the swap space to 8GB to provide more memory headroom.

Disable the tmm process to free up memory.

An administrator runs 'df -i' on a BIG-IP and sees that the /var filesystem has 100% inode usage, but 'df -h' shows only 40% space used. Users are reporting that they cannot create new files on the system. What is the most likely cause of this issue?

The /var partition is mounted read-only.

The filesystem has run out of inodes, preventing the creation of new files even though space is available.

The filesystem is corrupted and needs to be reformatted.

The system is out of memory, preventing file creation.

F5Certified Administrator, BIG-IP

Domain 1Objective 4

Determine Disk Utilization and Memory Utilization F5CAB5 Practice Questions (Page 4)

Part of the Determine resource utilization domain, which makes up ~20% of our current practice bank. F5 does not publish an official question count, but from its 30-minute exam (~10–20 total, ~2–4 in this domain), expect 1–1 from this objective — we provide 22 practice questions to prepare you well beyond it. (estimate)

22questions here

5free pages

5concepts

Questions 16–20

16application · medium
An F5 BIG-IP administrator notices that the /var partition on a BIG-IP VE (Virtual Edition) is filling up faster than expected. The administrator needs to identify which directories are consuming the most space. Which command should the administrator run to get a high-level summary of disk usage by directory?
Select an answer first
17application · medium
An administrator runs the command 'df -h' on a BIG-IP system and sees the following output for the /var filesystem: /dev/mapper/vg--ssd-lv--var 20G 19G 1.0G 95% /var. The BIG-IP is experiencing performance degradation and log writes are failing. What is the most likely cause of the performance issue?
Select an answer first
18expert · hard
A BIG-IP administrator is troubleshooting a memory issue. The 'free -m' output shows: total=16384, used=15000, free=200, shared=100, buff/cache=1184, available=1300. The administrator also runs 'top' and sees that the tmm process is using 80% of memory. The system is configured with 16GB RAM and 4GB swap. What is the most appropriate next step to address the memory pressure?
Select an answer first
19application · medium
An administrator runs 'df -i' on a BIG-IP and sees that the /var filesystem has 100% inode usage, but 'df -h' shows only 40% space used. Users are reporting that they cannot create new files on the system. What is the most likely cause of this issue?
Select an answer first
20application · easy
An administrator is monitoring a BIG-IP and wants to set up a quick check to see if the /var partition is running out of space. The administrator wants to see only the /var filesystem usage, not all filesystems. Which command will achieve this?
Select an answer first

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Determine Disk Utilization and Memory Utilization F5CAB5 Practice Questions (Page 4)

Questions 16–20

An administrator runs 'df -i' on a BIG-IP and sees that the /var filesystem has 100% inode usage, but 'df -h' shows only 40% space used. Users are reporting that they cannot create new files on the system. What is the most likely cause of this issue?

An administrator is monitoring a BIG-IP and wants to set up a quick check to see if the /var partition is running out of space. The administrator wants to see only the /var filesystem usage, not all filesystems. Which command will achieve this?

Keep studying — Determine resource utilization