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| Section | Objectives |
|---|---|
| System Configuration and Management | - System objects
|
| Software Upgrade and Maintenance | - Rollback and recovery
|
| BIG-IP Platform Fundamentals | - F5 BIG-IP architecture overview
|
| Basic Traffic and Service Concepts | - Load balancing fundamentals
|
| Initial Installation and Setup | - Deployment options
|
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NEW QUESTION # 51
Which one of the following is aport and protocol combination allowedby theAllow Defaultsetting for Port Lockdown?
Answer: C
Explanation:
Port Lockdown controls which ports and protocols aSelf IPwill respond to.
TheAllow Defaultsetting permits only a predefined set of BIG-IP internal and required service ports.
The Allow Default listincludes:
* TCP 443# HTTPS (Management/TMUI access via Self-IP)
* TCP 4353 # CMI (device sync)
* TCP/UDP ports related to HA communication
* Other essential internal F5 ports
Why TCP 443 is correct:
* It is one of the officially allowed ports underAllow Default.
* It enables HTTPS/TMUI access through a Self IP.
Why the other options are incorrect:
A). TCP 80 (HTTP)
* Not allowed under Allow Default
* HTTP via Self-IP is blocked unless placed under Allow Custom
B). UDP 8443
* Not an F5 default service
* Not part of the Allow Default ports
NEW QUESTION # 52
A BIG-IP device will be dedicated to functioning as a WAF, requiring only theASMmodule to be provisioned.
What provisioning level will ensure that the system allocatesall CPU, memory, and disk resourcesto this module exclusively?
Answer: C
Explanation:
Provisioning defines how BIG-IP allocates system resources to modules. The provisioning levels include:
* Dedicated- allocatesallCPU, memory, and disk resources to a single module
* Nominal- standard resource allocation balanced with other modules
* Minimal- lowest level, used for basic utility needs
* None- module disabled
* Comprehensive / Maximal- not valid TMOS provisioning levels
Why "Dedicated" is correct
When a BIG-IP device is intended to runonly ASM(Web Application Firewall), the recommended way to maximize performance is to provision the module atDedicatedlevel.
WithASM: Dedicated:
* ASM receives theentire hardware capacity
* No other modules can or should be provisioned
* This is explicitly recommended when a device is used solely as a WAF platform Why other options are incorrect B). Comprehensive / C. Maximal
* These arenot valid provisioning modesin BIG-IP.
* TMOS supports: Nominal, Minimal, Large (module-specific), and Dedicated.
D). Nominal
* Shares resources with other modules
* Does not provide full system performance
* Not suitable when exclusive resource allocation is required
Thus,Dedicatedis the correct provisioning choice.
NEW QUESTION # 53
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: A
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 # 54
How should a BIG-IP Administrator check the provisioned CPU percent for a module? (Choose two.)
Answer: B,C
Explanation:
BIG-IP allocates CPU and memory resources based on module provisioning levels.
To view how much CPU a module is assigned, administrators must check provisioning information from:
C). GUI -- System ยป Resource Provisioning
This page visually displays CPU allocation via color-coded bars.
Hovering over the CPU bar shows:
CPU usage percent per module
Which modules share CPU cycles
The system's total resource allocation
This is the primary GUI method.
D). tmsh show /sys provision
This command displays detailed module provisioning information including:
Provisioned modules
Their provisioning level
CPU and memory allocation data
It is the authoritative CLI method for resource provisioning status.
NEW QUESTION # 55
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 ยป Software Management ยป Image List?
Answer: A
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
NEW QUESTION # 56
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