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NEW QUESTION # 27
An administrator is in the process of reactivating the license using the interface displayed in the exhibit.
What is the address of the license server to which the BIG-IP device must be able to establish an outbound connection in order to use the Automatic Activation Method?
- A. license.f5.com
- B. ask.f5.com
- C. activate.f5.com
- D. callhome.f5.com
Answer: C
Explanation:
When you choose Automatic as the activation method in the License > Re-activate screen, the BIG-IP device itself contacts F5's license activation service over the Internet.
For successful automatic activation:
The BIG-IP must have outbound network connectivity (typically via the management interface).
DNS resolution and routing must allow it to reach the F5 license activation host (the one shown in option D).
The device sends its dossier and registration key to that service and receives an updated license file in return, which is then installed automatically.
The other hostnames in the options are not used by BIG-IP for license activation, so they cannot be correct in the context of Automatic Activation.
NEW QUESTION # 28
The BIG-IP Administrator needs to update access to the Configuration Utility to include the172.28.31.0/24and
172.28.65.0/24networks.
From the TMOS Shell (tmsh), which command should the BIG-IP Administrator use to complete this task?
- A. modify /sys httpd permit add { 172.28.31.0/255.255.255.0 172.28.65.0/255.255.255.0 }
- B. modify /sys httpd allow add { 172.28.31.0/255.255.255.0 172.28.65.0/255.255.255.0 }
- C. modify /sys httpd allow add { 172.28.31.0 172.28.65.0 }
Answer: B
Explanation:
Access to the BIG-IP Configuration Utility (TMUI) is controlled through the/sys httpd allowlist.
This list defines which IP addresses or subnets are allowed to connect to the management web interface.
To allow two new subnets-172.28.31.0/24and172.28.65.0/24-the administrator mustaddboth subnets to the existing list without removing current entries.
In tmsh, subnet entries must be specified innetwork/netmask format, for example:
172.28.31.0/255.255.255.0
The correct tmsh command to append these networks is:
modify /sys httpd allow add { 172.28.31.0/255.255.255.0 172.28.65.0/255.255.255.0 } Why the other options are incorrect:
Option B:
* IPs are listed without masks, which is invalid for subnet-based access control.
* The system requiresnetwork/netmaskformat.
Option C:
* The command uses permit instead of allow, which is not a valid attribute of /sys httpd.
* The correct keyword must beallow.
Thus, onlyOption Acorrectly adds both permitted subnets in the proper tmsh format.
NEW QUESTION # 29
What will setting a Self IP to"Allow None"for Port Lockdown do?
- A. Default allow port 1026 access between peer devices and traffic processing across the network failover.
- B. Block HA communications, causing the systems to report their peer as online ready.
- C. Block HA communications, causing the systems to report their peer as offline and go active-active.
Answer: C
Explanation:
ThePort Lockdownfeature controls which services a Self-IP will respond to.
Setting a Self-IP toAllow Nonemeans:
* The Self-IP will not acceptanytraffic except the very limited, hard-coded HA ports such asTCP 4353 used for device trust and configuration sync.
* All other HA ports, including those needed for network failover and other HA mechanisms,are blocked.
When essential HA services cannot communicate, each device assumes its peer is down.
This results in:
* HA failover misbehavior
* Both devices thinking the other is offline
* Potentialactive-active condition, which is not intended and can cause traffic disruption Thus,Allow Nonecan break HA functionality unless the Self-IP is not used for HA links.
NEW QUESTION # 30
The monitoring team reports that the SNMP server is unable to poll data from a BIG-IP device.
What information will help the BIG-IP Administrator determine whether the issue originates from the BIG-IP system?
- A. The "VLAN / Tunnel" setting must allow All Vlans.
- B. The configuration on the exhibit is correct and other options should be explored.
- C. The "Port Lockdown" setting is preventing the SNMP server from polling data from the BIG-IP.
- D. The "Traffic Group" setting must use a floating Traffic Group.
Answer: C
Explanation:
The exhibit shows a Self IP with:
VLAN: Data
Port Lockdown: Allow None
Impact of "Allow None" on SNMP
When a Self IP is configured with:
Port Lockdown: Allow None
the BIG-IP blocks all services and ports except a few hardcoded HA communication ports.
This means:
UDP/161 (SNMP) is blocked
UDP/162 (SNMP traps) is blocked
The SNMP server cannot poll or receive data from the BIG-IP through this Self IP SNMP relies on access through the Self IP if out-of-band (mgmt interface) is not used.
Thus, the issue is directly caused by Port Lockdown = Allow None, which prevents SNMP communication.
NEW QUESTION # 31
When using the tmsh shell of a BIG-IP system, which command will display the management-ip address?
- A. list /sys management-ip
- B. run /util bash ifconfig mgmt
- C. show /sys management-ip
Answer: A
Explanation:
Comprehensive and Detailed Explanation (Paraphrased from F5 BIG-IP Administration / Installation / Initial Configuration concepts) Within the BIG-IP Traffic Management Shell (tmsh), system configuration objects-including the management IP-are organized under the/syshierarchy. The management IP address is a configurable property stored in the system configuration and can be viewed using the tmshlistcommand, which displays configuration objects and their currently assigned values.
Why "list /sys management-ip" is correct
* The list command in tmsh is used todisplay configured system values, not runtime statistics.
* The object that holds the management IP settings on BIG-IP systems is located at:/sys management-ip
* Running the command:list /sys management-ipwill reveal the settings for the management IP interface, including the address, netmask, and any associated attributes.
* This is the standard method used during system setup and verification to confirm the management IP configuration.
This behavior aligns with BIG-IP administration procedures, where configuration information is retrieved usinglist, while operational data is retrieved usingshow.
Why the other options are incorrect
A). run /util bash ifconfig mgmt
* This command enters the Bash shell, then runs ifconfig to display the management interface.
* While this can show the management interface address, it isnot a tmsh-native command, and the question specifically asks for a tmsh command.
* Administrators use tmsh directly for configuration display rather than leaving the shell.
C). show /sys management-ip
* The show command displaysstatistics or operational data, not configuration values.
* The management-ip object does not maintain statistics; therefore show does not return the configuration details required.
* Only thelistcommand reveals stored configuration data such as IP address and netmask.
NEW QUESTION # 32
A BIG-IP Administrator needs to install a HotFix on a standalone BIG-IP device.
The device currently has HD1.1 as the Active Boot Location.
The administrator has already reactivated the license and created a UCS archive.
In which sequence should the administrator perform the remaining steps?
- A. Activate HD1.2, Install base Image in HD1.2, Install HotFix in HD1.2
- B. Install base Image in HD1.2, Install HotFix in HD1.2, Activate HD1.2
- C. Install HotFix in HD1.2, Install base Image in HD1.2, Activate HD1.2
- D. Install HotFix in HD1.1, Reboot the BIG-IP device, Install UCS Archive
Answer: B
Explanation:
When installing a software upgrade with a HotFix on BIG-IP, the correct workflow requires:
Install the base TMOS image on an unused boot volume
Install the corresponding HotFix onto that same boot volume
Activate the updated boot volume to boot into the new software
This method ensures:
The existing active system (HD1.1) is untouched
The upgrade occurs in a new, clean volume (HD1.2)
The HotFix applies properly to the same base image
The administrator can revert to HD1.1 if issues occur
Option C matches the correct F5 upgrade sequence:
1. Install base image on HD1.2
2. Install HotFix on HD1.2
3. Activate HD1.2
NEW QUESTION # 33
A BIG-IP Administrator needs to purchase new licenses for a BIG-IP appliance.
The administrator needs to know:
- Whether a module is licensed
- The memory requirement for that module
Where should the administrator view this information in the System menu?
- A. Software Management
- B. Configuration ?Device
- C. Configuration ?OVSDB
- D. Resource Provisioning
Answer: D
Explanation:
To understand:
Which modules are licensed
Which modules are provisioned
The resource requirements (CPU / RAM) of each module
The administrator uses:
System ยป Resource Provisioning
This page displays:
All modules present in the license
Whether they are enabled or disabled
Required memory to activate each module
CPU and disk allocation information
Provisioning level options (None / Minimal / Nominal / Dedicated)
This is the exact location where BIG-IP administrators evaluate module capacity before enabling or purchasing licensing upgrades.
NEW QUESTION # 34
An F5 VE has been deployed into a VMware environment via an OVF file.
An administrator wants to configure the management IP address so the VE can be accessed for further setup.
Which two are valid methods for configuring the management-ip address? (Choose two.)
- A. Log into the remote console and configure the management IP through TMSH using:
create sys management-ip <ip address>/<mask> - B. Log into the remote console and configure the management IP through TMSH using:
create ltm management-ip <ip address>/<mask> - C. Log into the remote console and configure the management IP by running theconfigexecutable.
- D. Log into the remote console and configure the management IP by running thesetupcommand.
Answer: A,C
Explanation:
A newly deployed BIG-IP Virtual Edition (VE) in VMware requires initial configuration of itsmanagement- ipaddress so it can be accessed over the network. F5 provides several valid mechanisms during initial console access:
A). Running the config utility
* The config script is available on new BIG-IP installations and VE deployments.
* It launches a guided text-based wizard allowing configuration of:
* Management IP
* Netmask
* Default route
* This is a standard and recommended method during first-time setup.
B). Using TMSH with create sys management-ip
* Administrators can enter TMSH directly from the console and run:
* create sys management-ip <ip>/<mask>
* The management-ip object resides undersys, not under ltm or any other module.
* This is the correct tmsh method for defining the management interface address.
Why the other options are incorrect:
C). create ltm management-ip
* There isnosuch object under /ltm.
* LTM handles traffic objects (virtual servers, pools), not system management interfaces.
D). Running the setup command
* The setup command is used for general system configuration butdoes not configure the management- ip.
* It is not the supported method for initial management IP assignment on VE deployments.
Therefore, the valid methods are running theconfigutility and using thesys management-ipcommand within TMSH.
NEW QUESTION # 35
A BIG-IP Administrator needs to purchase new licenses for a BIG-IP appliance.
The administrator needs to know:
* Whether a module is licensed
* The memory requirement for that module
Where should the administrator view this information in the System menu ?
- A. Configuration > OVSDB
- B. Configuration > Device
- C. Software Management
- D. Resource Provisioning
Answer: D
Explanation:
To understand:
* Which modules are licensed
* Which modules are provisioned
* The resource requirements (CPU / RAM) of each module
The administrator uses:
System > Resource Provisioning
This page displays:
* All modules present in the license
* Whether they are enabled or disabled
* Required memory to activate each module
* CPU and disk allocation information
* Provisioning level options (None / Minimal / Nominal / Dedicated)
This is the exact location where BIG-IP administrators evaluate module capacity before enabling or purchasing licensing upgrades.
Why the other options are incorrect:
A). Configuration > OVSDB
* Used for network virtualization integrations, not licenses or modules.
B). Software Management
* Used for software image installation, not licensing.
C). Configuration > Device
* Displays hostname, failover settings, device properties - not module resource requirements.
Thus, module licensing and memory requirement data are found under Resource Provisioning .
NEW QUESTION # 36
When is theLicense Service Check Dateenforced on a BIG-IP system?
- A. During system startup
- B. After editing a virtual server
- C. During a software install
Answer: C
Explanation:
TheService Check Datedetermines whether a particular software version is allowed to run under the device's license.
* When installing or upgrading TMOS, the installer checks theService Check Datestored in the BIG-IP license file.
* If the license date isolderthan the minimum required for the target version, the software installation is blocked.
* This check happensspecifically during a software install, not during routine device operations.
Editing virtual servers or system startup do not trigger this validation.
Thus, the enforcement happensduring software installation.
NEW QUESTION # 37
An F5 BIG-IP Administrator is asked to report which modules are provisioned on the BIG-IP. In which two ways can this be done? (Choose two.)
- A. Via the GUI at System -> Resource Provisioning -> Module Allocation
- B. Via TMSH with list /sys provision
- C. Via the GUI at Statistics -> Module Statistics -> System
- D. Via TMSH with show /sys provision
Answer: A,B
Explanation:
Provisioning determines:
Which BIG-IP modules are enabled (LTM, ASM, APM, AFM, DNS, etc.)
Their provisioning levels (None, Minimal, Nominal, Dedicated)
Two accurate ways to view provisioning settings are:
A). GUI -- System -> Resource Provisioning -> Module Allocation
This is the primary GUI screen showing:
All modules
Their provisioning level
System resource distribution impact
Administrators commonly use this page to confirm or change module provisioning.
D). TMSH -- list /sys provision
This tmsh command displays each module and its provisioning level:
sys provision ltm { level nominal }
sys provision asm { level none }
...
This is the authoritative CLI method for checking module provisioning configurations.
NEW QUESTION # 38
What is the purpose of a Virtual Server in BIG-IP?
- A. It handles the routing of traffic to back-end servers
- B. It is used to configure the Self-IP
- C. It defines how SSL certificates are managed
- D. It defines a failover mechanism for the system
Answer: A
Explanation:
A Virtual Server is used to manage traffic, directing it to the appropriate pool of servers based on load balancing rules.
NEW QUESTION # 39
An organization is planning to upgrade a BIG-IP system from 16.1.x to 17.1.x.
For a successful upgrade, the Service Check Date must be equal to or newer than the License Check Date required for 17.1.x.
Which command will show the Service Check Date on the BIG-IP system being upgraded?
- A. grep "Service check date" /config/BigDB.dat
- B. grep "Service check date" /config/bigip.conf
- C. grep "Service check date" /config/svc_chk_date.dat
- D. grep "Service check date" /config/bigip.license
Answer: D
Explanation:
BIG-IP licensing information, including the Service Check Date, is stored in the file:
/config/bigip.license
This file contains all license attributes downloaded from the F5 licensing server, including:
License key
Licensed modules
Useful life date
Service check date
The Service Check Date determines whether the system is eligible for upgrades to specific TMOS versions. When reviewing upgrade readiness, administrators extract this value directly from the license file with:
grep "Service check date" /config/bigip.license
Why the other options are incorrect:
/config/bigip.conf stores BIG-IP configuration objects, not license metadata.
/config/svc_chk_date.dat is not a valid file in the licensing system; it does not contain license parameters.
/config/BigDB.dat stores internal database values, not licensing attributes.
Thus, only the bigip.license file contains the correct licensing information required for verifying upgrade eligibility.
NEW QUESTION # 40
The BIG-IP Administrator uses Secure Copy Protocol (SCP) to upload a TMOS image to the /shared/images/ directory in preparation for a TMOS upgrade.
After the upload is completed, what will the system do before the image is shown in the GUI under:
System > Software Management > Image List ?
- A. The system copies the image to /var/local/images/
- B. The system verifies the internal checksum
- C. The system performs a reboot into a new partition
Answer: B
Explanation:
When a TMOS image (.iso file) is uploaded into the /shared/images/ directory, the BIG-IP performs an internal validation step before the ISO appears in the GUI.
1. The system verifies the internal checksum
* BIG-IP automatically reads the embedded checksum inside the ISO file
* Verifies integrity of the uploaded image
* Confirms the file is not corrupted or incomplete
* Ensures the image is a valid F5 TMOS software image
Only after this checksum verification succeeds does the image appear under:
System # Software Management # Image List
Why the other options are incorrect:
A). The system performs a reboot into a new partition
* Uploading an ISO file never triggers a reboot.
C). The system copies the image to /var/local/images/
* All valid TMOS images remain in /shared/images/ .
* No copying occurs.
NEW QUESTION # 41
For an upgrade of a standalone BIG-IP, a maintenance window is available in which brief interruptions are allowed.
Actions with no impact can be done outside the maintenance window.
When should a license reactivation be performed?
- A. Before the maintenance window.
- B. After the maintenance window.
- C. During the maintenance window.
Answer: A
Explanation:
License reactivation updates the BIG-IP device's license file to ensure:
* TheService Check Dateis current
* The device is eligible to install the intended TMOS version
* Any module entitlement updates are received
Reactivationdoes not interrupt trafficand does not require a reboot, making it safe to performbeforethe maintenance window.
F5 best practices state:
* Performall non-impact tasks priorto the scheduled maintenance window
* Leave the window available for activities that require rebooting, such as the software installation itself Since license reactivation isnon-disruptive, it should be donebeforethe upgrade window starts.
NEW QUESTION # 42
How can the BIG-IP Administrator tell when an unlicensed module has been provisioned?
- A. A BIG-IP does not allow unlicensed modules to be provisioned.
- B. A Provisioning Warning will be displayed in the GUI in the upper left corner.
- C. When provisioning an unlicensed module, a warning will appear.
Answer: B
Explanation:
The BIG-IP system has built-in licensing enforcement.
If an administrator provisions a module that the device is not licensed to run, the system will still allow the provisioning action to occur initially , but the system detects the mismatch and displays an alert.
What actually happens:
* The GUI places a warning banner in the upper-left corner labeled something similar to:
"Provisioning Warning"
* This appears immediately after provisioning a module that is not included in the active license.
* The system remains in an "inconsistent state" until the module is disabled again or the license is updated.
This is the visual cue BIG-IP uses to indicate that a module was provisioned without valid licensing.
Why the other options are incorrect:
A). "A BIG-IP does not allow unlicensed modules to be provisioned."
* Not true. BIG-IP does allow provisioning, but warns afterward.
B). "A warning will appear when provisioning an unlicensed module."
* The warning does not appear during the provisioning step itself.
* It appears after provisioning , in the main GUI, as a system banner.
NEW QUESTION # 43
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