F5CAB1 Install, Initial Configuration, and Upgrade — Timed 10 Questions

Question 1

An administrator is performing an initial setup on a new BIG-IP platform via the Configuration Utility. Which step is mandatory to ensure the device can be licensed and receive updates from F5?

Accepted Answer

Configure the management IP address and default gateway.. Validating connectivity to the licensing server is critical during initial deployment. The BIG-IP must resolve the F5 license activation server address, typically requiring correct DNS configuration and routing. Without a valid license, the system remains in a non-functional state, preventing configuration of traffic management objects. This process ensures the hardware or virtual instance is authorized and entitled to the features requested during the provisioning phase of the installation.

Answer

Provision all modules to the 'Dedicated' resource level.

Answer

Create a high availability group with another unit.

Answer

Define a custom administrative partition for management.

Question 2

Refer to the exhibit. An administrator is planning to upgrade the BIG-IP to version 17.1.1. Which action should be taken to ensure the upgrade succeeds while maintaining the ability to revert to the currently running version?

Accepted Answer

Install the new version into volume MD1.3.. The administrator must install the new version into an inactive volume, specifically HD1.3, to preserve the existing working environment on HD1.1. By installing to an unused volume, the current configuration remains untouched, allowing for a quick rollback if the upgrade fails or exhibits post-upgrade issues. Maintaining boot locations is a best practice for risk mitigation during major software transitions, ensuring service continuity is prioritized alongside firmware updates.

Answer

Install the new version into volume MD1.1.

Answer

Delete volume MD1.2 before starting the installation.

Answer

Activate MD1.2 before installing the new software.

Question 3

Which TWO items must be correctly configured to ensure the BIG-IP device can send email alerts for system events?

Accepted Answer

SMTP server hostname or IP address.. To send email alerts, the BIG-IP requires a functional SMTP relay server address, which the device uses to send outbound notifications. Additionally, the administrator must configure the alerting system, specifically defining the 'SNMP' or 'Email' alert recipients. Without the SMTP server configuration, the device has no path to transmit the mail, and without defined recipients, the alerts have no destination address for delivery.

Answer

Default Gateway for the data plane.

Answer

Active Directory domain controller.

Answer

SSL certificate for the email server.

Question 4

An administrator observes that the BIG-IP system is constantly rebooting into an old boot volume despite installing a new version in a different volume. What is the most likely cause?

Accepted Answer

The boot-default parameter is not updated.. The BIG-IP boot order is determined by the system's GRUB/BIOS settings, which prioritize the boot volume. If the system is not told to switch the default boot location, it will continue to boot into the previously active volume. The administrator must explicitly set the new, updated volume as the 'default' boot location to ensure the system boots into the new version upon any subsequent restart.

Answer

The license is expired.

Answer

The system clock is not synchronized.

Answer

The management interface is disconnected.

Question 5

An administrator is performing a fresh installation of BIG-IP VE on a hypervisor. After booting, the system fails to acquire an IP address via DHCP on the management interface. Which command should the administrator use to manually configure the management IP address?

Accepted Answer

config. The config utility provides the initial setup wizard to configure the management network, but the tmsh command line is the robust way to ensure settings persist after a reboot. Administrators must frequently handle cases where DHCP is unavailable in isolated management networks. Understanding this manual configuration process is critical for ensuring the device is reachable for further licensing and provisioning tasks within a restricted data center environment.

Answer

config_mgmt --ip 192.168.1.5 --netmask 255.255.255.0

Answer

tmsh modify sys management-ip 192.168.1.5/24

Answer

ip address add 192.168.1.5/24 dev eth0

Question 6

An administrator is upgrading a BIG-IP pair from v14.1 to v16.1. Which TWO tasks must be performed to ensure a successful upgrade of the High Availability pair?

Accepted Answer

Install the new software version on an inactive volume.. Upgrading HA pairs requires a methodical approach to ensure traffic continuity and configuration integrity. By installing to an inactive partition and performing a configuration sync, the administrator minimizes downtime and mitigates risks associated with software incompatibility. These steps are standard industry best practices for F5 deployments, ensuring that the standby unit is prepared to take over traffic seamlessly if the primary unit fails during the transition.

Answer

Install the new software version on the active partition.

Answer

Delete the old configuration files before upgrading.

Answer

Change the device trust to 'standby' mode.

Question 7

Which THREE items must be configured in the initial setup wizard to allow the BIG-IP to communicate with the network?

Accepted Answer

Management IP address and netmask.. Setting up the management network is the prerequisite for all subsequent management. Without these core components, the BIG-IP cannot be managed remotely, nor can it download licenses or security updates. Mastering the basic network setup is essential for F5 administrators, as this configuration forms the backbone for all remote administrative connectivity and interaction with centralized management platforms.

Answer

SNMP community string.

Answer

VLAN 10 tagging for data traffic.

Question 8

An administrator is planning a BIG-IP software upgrade using the 'image2disk' utility. Which TWO factors must be verified to ensure a successful installation?

Accepted Answer

Verify the MD5 checksum of the ISO image.. Successful upgrades rely on both file integrity and hardware compatibility. Verifying the MD5 checksum ensures the ISO was not corrupted during transfer, preventing installation failures. Checking the platform support confirms the image is compatible with the underlying hardware or hypervisor architecture. These checks are critical to prevent bricking the device or encountering post-upgrade boot loops, which would require manual recovery via the serial console.

Answer

Ensure the current license is valid for the new version.

Answer

Confirm the target partition has sufficient disk space.

Answer

Check if SSH is enabled for remote updates.

Question 9

Refer to the exhibit. The administrator has installed a new version on HD1.2. What command must be executed to switch to the new version upon reboot?

Accepted Answer

switchboot -d HD1.2. The 'switch' command designates the target volume as the next boot location. Without this command, the system will continue to boot from the current active partition (HD1.1) upon reboot. Properly managing the boot slot is critical for controlling the rollout of new versions, ensuring that the system transitions to the desired software version in a controlled, predictable manner during the next maintenance cycle.

Answer

tmsh modify sys software volume HD1.2 active

Answer

tmsh boot volume HD1.2

Answer

set-boot-location HD1.2

Question 10

Which utility should an administrator use to monitor the status of a software installation in progress?

Accepted Answer

Check the '/var/log/liveinstall.log' file.. The 'tmsh' utility, specifically using the 'show sys software' command, provides real-time visibility into the installation status. It shows the progress, which volume is being updated, and whether the process has completed. Monitoring this is critical during maintenance to ensure the process hasn't stalled, allowing the administrator to respond quickly to potential issues and verify that the installation finishes correctly without corrupting the target boot volume.

Answer

Use the 'top' command.

Answer

Run 'netstat -an'.

Answer

Restart the management services.