F5CAB1 Install, Initial Configuration, and Upgrade Practice Test 3 — 15 Questions

Question 1

An administrator is performing the initial configuration of a BIG-IP system via the Setup Utility. Which two tasks are required to complete the initial configuration and make the device operational? (Choose two.)

Choose an answer to begin — your selection is scored in the full session.

Accepted Answer

Provision the appropriate modules (e.g., LTM, ASM) based on licensed features.. The initial configuration via the Setup Utility requires setting the management IP address, netmask, and default gateway to enable management access. Additionally, provisioning the licensed modules is necessary to activate the features and allocate resources. Other tasks like VLAN configuration, management default route, and HA setup are either not required initially or are part of later configuration stages.

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Configure a default route for the management network.

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Enable high availability (HA) and configure failover.

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Set up at least one VLAN and assign it to an interface.

Question 2

An administrator is performing an initial configuration of a BIG-IP system. The administrator needs to license the device using the automatic activation method. Which two steps are required to complete the licensing process? (Choose two.)

Accepted Answer

Enter the Base Registration Key and, if required, the add-on keys in the Configuration utility.. Automatic activation requires the management interface to have outbound Internet access and the administrator to enter the Base Registration Key. These steps allow the BIG-IP to contact F5's licensing servers, validate the key, and download the license. Manual download or proxy configuration is not required for automatic activation.

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Configure a proxy server for licensing traffic if the management interface does not have direct Internet access.

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Reboot the BIG-IP system after entering the license key to complete activation.

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Manually download the license file from F5 and upload it to the BIG-IP system.

Question 3

An administrator is upgrading a BIG-IP system from version 14.1 to 15.1. During the upgrade, the administrator receives an error that the configuration contains objects that are incompatible with the new version. Which action should the administrator take to resolve this issue?

Accepted Answer

Roll back to the previous version and remove the incompatible objects before retrying the upgrade.. When incompatible objects are detected during an upgrade, the correct action is to roll back to the previous version, remove or modify the incompatible objects, and then retry the upgrade. This ensures a clean migration and prevents potential issues. Forcing the upgrade or manually editing files is not supported and can cause instability.

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Manually edit the configuration files to remove references to the incompatible objects and then resume the upgrade.

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Install the new version on a different partition and copy only the compatible parts of the configuration.

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Force the upgrade to continue by bypassing the compatibility check.

Question 4

An administrator is preparing to install a new version of BIG-IP software. Which TWO steps are considered best practices to perform before initiating the installation?

Accepted Answer

Create a full User Configuration Set (UCS) archive.. Preparing for a BIG-IP upgrade requires careful planning to prevent data loss and ensure system stability. Creating a UCS archive provides a full backup of the configuration, allowing for restoration if the upgrade causes corruption. Checking the release notes is equally critical, as they detail specific upgrade paths, known issues, and hardware compatibility requirements that can prevent a catastrophic failure during the transition to the new software release.

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Disable all Virtual Servers to prevent traffic.

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Reset the management interface to factory defaults.

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Delete all existing SSL certificates.

Question 5

When configuring a new BIG-IP device, what is the primary purpose of the 'Setup Utility'?

Accepted Answer

To perform the basic initial system configuration.. The Setup Utility serves as the initial configuration interface for a newly provisioned BIG-IP. It streamlines the input of essential parameters like device hostname, management network settings, and licensing. By guiding the administrator through these critical tasks, it ensures the device is correctly identified on the network and entitled to function, providing a consistent foundation before more advanced features like Local Traffic Manager or Security policies are implemented.

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To automatically optimize the TCP/IP stack for performance.

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To create all virtual servers and pools.

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To manage existing user traffic on the device.

Question 6

An administrator attempts to upgrade a BIG-IP system but receives an error stating that the 'required intermediate version' has not been reached. What is the correct way to handle this situation?

Accepted Answer

Install the intermediate version first, then the target.. BIG-IP upgrades often require specific intermediate software versions to ensure the configuration database (the bigip.conf file) is migrated correctly. Jumping from a very old version to the latest can cause the conversion script to fail. The administrator must install the mandatory intermediate version first, boot into it to allow the database conversion to occur, and then proceed with the final upgrade to the desired target version.

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Force the install using the '--ignore-version' flag.

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Manually copy the bigip.conf file to the new version.

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Re-license the device using the target version keys.

Question 7

Which THREE components are verified during the installation process of a new BIG-IP software version?

Accepted Answer

Software image integrity checksum.. During installation, the BIG-IP system validates the integrity of the software image to prevent corrupted installations. It also checks for sufficient disk space in the target volume to ensure the system can successfully extract all files. Finally, the system confirms hardware compatibility, ensuring the specific platform model supports the software version being installed, which is crucial for preventing kernel panic or driver mismatch issues after the first boot.

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Local client user session count.

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External DNS server latency.

Question 8

An administrator wants to ensure that a newly installed BIG-IP version is tested before putting it into production. What is the most effective way to accomplish this?

Accepted Answer

Install to an inactive volume and boot into it.. The best method is to boot into the new version while keeping the old version intact on another volume. This allows for validation of the configuration and traffic handling in the new environment. If issues arise, the administrator can quickly reboot back into the original, known-good boot location, minimizing downtime and allowing for a safe, staged migration to the new software release.

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Use the 'switch' command during a live production peak.

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Perform the upgrade on the active partition directly.

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Clone the configuration to a secondary device.

Question 9

Which license requirement must be met before a BIG-IP device can be used in a production environment?

Accepted Answer

A valid license key must be activated on the device.. A valid F5 license is strictly required for the device to operate. The license file dictates which modules (LTM, ASM, APM) are enabled and how much hardware capacity is available. Without a valid license, the system enters a restricted mode where traffic management services will not start, rendering the device useless for production traffic. Proper licensing ensures that the features are legally enabled and supported.

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The license must be manually updated every 24 hours.

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The license must be shared with the peer in a cluster.

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The license must be stored in a public cloud bucket.

Question 10

An administrator is configuring a new BIG-IP and needs to ensure that the device's management interface is accessible only from a specific secure jump host. Which configuration element should be modified?

Accepted Answer

Update the Management Interface allowed list.. Restricting management access is a fundamental security practice. By modifying the 'Allowed IP addresses' list within the management interface configuration, the BIG-IP will only accept traffic from designated IP addresses. This effectively mitigates the risk of unauthorized access attempts from the broader network, ensuring that only trusted machines, such as a secure jump host, can interact with the system's management services.

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Modify the Virtual Server access list.

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Create a packet filter on the external interface.

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Disable the HTTPS service on the device.

Question 11

What is the primary function of the 'ConfigSync' process during the initial setup of a redundant pair?

Accepted Answer

To replicate configuration data between units.. ConfigSync is responsible for replicating configuration data between units in a high availability pair. During initial setup, it ensures that both the active and standby units possess identical configurations, including virtual servers, pools, and profiles. This is critical for failover; if the active unit fails, the standby unit must have an exact replica of the configuration to take over traffic management without any service disruption or mismatch.

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To synchronize the software version between units.

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To perform load balancing between two BIG-IPs.

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To update the license status of the standby unit.

Question 12

After upgrading a BIG-IP, the administrator notices that specific traffic management features are now missing. What is the most likely reason?

Accepted Answer

The modules were not provisioned after the reboot.. Missing features after an upgrade often result from improper provisioning. When upgrading to a newer BIG-IP version, the resource allocation for modules (e.g., LTM, AFM) may be reset or require manual reassignment. If the module is not correctly provisioned to a 'Nominal' or 'Dedicated' level, the associated functionality will not be loaded into the memory, making the features appear absent even though the software version is correct.

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The license was invalidated by the upgrade.

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The configuration file was deleted.

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The browser cache requires clearing.

Question 13

Which tool should an administrator use to monitor the status of the BIG-IP upgrade process in real-time?

Accepted Answer

The 'tmsh show sys software' command.. The 'tmsh' (Traffic Management Shell) command-line interface provides the most reliable and real-time visibility into the upgrade process. By using commands like 'show sys software', an administrator can monitor the installation percentage, status of the target volume, and identify any errors as they happen. This is superior to the GUI, which may not update as reliably during major system-level transitions like firmware installations.

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The browser-based performance graphs.

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The 'tcpdump' utility.

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The 'f5mcpd' logs in the GUI.

Question 14

An administrator is performing an initial setup on a newly deployed BIG-IP VE appliance in a cloud environment. After accessing the Configuration utility, the administrator needs to license the system using a registration key. Which workflow must be completed to successfully provision and license the device?

Accepted Answer

Submit the registration key to generate a dossier, activate it online or offline to retrieve the license, install the license, and then provision modules.. Licensing a BIG-IP VE requires the registration key to be submitted to the F5 activation server either directly through the system or via a dossier. This generates a valid license file containing the feature modules, which must be installed before provisioning resources. Provisioning allocates CPU and memory based on the licensed modules, ensuring the appliance operates stably within cloud capacity constraints.

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Provision the desired modules first, upload the raw license text file, and then reboot the management daemon to apply changes.

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Run the configuration utility setup wizard, bypass the licensing step by using trial mode, and provision all available modules simultaneously.

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Connect via serial console, execute the default setup script, assign a management IP, and automatically trigger the cloud marketplace auto-licensing daemon.

Question 15

Refer to the exhibit. An administrator reviews the system status after an upgrade attempt on a high-availability BIG-IP pair. The command output indicates a critical service failure. Which immediate diagnostic step should the administrator take?

Accepted Answer

Access the command line interface to examine /var/log/ltm for initialization errors and verify license validity for the newly installed software version.. The command output highlights that the Traffic Management Microkernel is suppressed, indicating a critical hardware or software initialization failure following an upgrade. Investigating log files such as /var/log/ltm and /var/log/boot.log helps isolate whether the issue stems from corrupted configuration syntax, license mismatches, or incompatible software images during the boot process.

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Reboot the active device immediately into the previous boot location and initiate a configuration sync across the high-availability peer.

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Modify the BIG-IP platform properties file to disable hardware acceleration and restart the master control program daemon using bigstart restart.

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Run a complete factory default reset via the command line and restore the configuration from a UCS archive generated prior to the upgrade.