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| Section | Objectives |
|---|---|
| System Configuration and Management | - System objects
|
| BIG-IP Platform Fundamentals | - Basic networking concepts in BIG-IP
|
| Software Upgrade and Maintenance | - Rollback and recovery
|
| Basic Traffic and Service Concepts | - Load balancing fundamentals
|
| Initial Installation and Setup | - Deployment options
|
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NEW QUESTION # 22
An organization is planning to upgrade a BIG-IP system from16.1.xto17.1.x.
For a successful upgrade, theService Check Datemust 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?
Answer: C
Explanation:
BIG-IP licensing information, including theService 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
TheService Check Datedetermines 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.confstores BIG-IP configuration objects, not license metadata.
* /config/svc_chk_date.datisnota valid file in the licensing system; it does not contain license parameters.
* /config/BigDB.datstores internal database values, not licensing attributes.
Thus, only thebigip.licensefile contains the correct licensing information required for verifying upgrade eligibility.
NEW QUESTION # 23
Which option in the BIG-IP Configuration utility is used to configure the system's routes?
Answer: D
Explanation:
Routing settings for the BIG-IP system can be configured under System > Network > Routes in the Configuration utility.
NEW QUESTION # 24
The BIG-IP Administrator needs to update access to the Configuration Utility to include the 172.28.31.0/24 and 172.28.65.0/24 networks.
From the TMOS Shell (tmsh), which command should the BIG-IP Administrator use to complete this task?
Answer: C
Explanation:
Access to the BIG-IP Configuration Utility (TMUI) is controlled through the /sys httpd allow list.
This list defines which IP addresses or subnets are allowed to connect to the management web interface.
To allow two new subnets- 172.28.31.0/24 and 172.28.65.0/24 -the administrator must add both subnets to the existing list without removing current entries.
In tmsh, subnet entries must be specified in network/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 requires network/netmask format.
Option C:
* The command uses permit instead of allow, which is not a valid attribute of /sys httpd.
* The correct keyword must be allow .
Thus, only Option A correctly adds both permitted subnets in the proper tmsh format.
NEW QUESTION # 25
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 ?
Answer: C
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 # 26
A BIG-IP device is licensed forLTM, ASM, APM, and AFM.
Currently, it will only be used forload balancingandweb application firewalling.
To ensure optimal performance and efficient resource utilization, which of the following module provisioning combinations is the best choice?
Answer: D
Explanation:
BIG-IP provisioning determines how CPU, memory, and disk resources are allocated to each module. The goal is to provision only the modules required and at levels appropriate to their performance needs.
Requirements in the question
The device will be used for:
* LTM(Local Traffic Manager) # load balancing
* ASM(Application Security Manager) # WAF
No functions require:
* APM (Access Policy Manager)
* AFM (Advanced Firewall Manager)
Why Option C is correct
Provisioning bothLTMandASMatNominallevel provides:
* Adequate performance for production load
* Plentiful system resources while avoiding dedicating the entire system to a single module
* Balanced allocation without starving memory or CPU
SettingAPM: NoneandAFM: Noneensures unused modules consume zero resources.
Why the other options are incorrect
A). Dedicated provisioning for both LTM and ASM
* Two modules cannot both run in "Dedicated" mode.
* Dedicated mode allocatesallresources to a single module - the second module cannot be dedicated simultaneously.
B). LTM and ASM both Dedicated
* Same issue: only one module can be Dedicated at a time.
* Also unnecessary for load balancing + WAF.
D). Setting APM and AFM to Minimal
* Minimal still consumes memory and CPU.
* Unused modules should be set toNone.
Therefore,Option Cis the best provisioning strategy.
NEW QUESTION # 27
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