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| Section | Objectives |
|---|---|
| Topic 1: BIG-IP Platform Fundamentals | - Basic networking concepts in BIG-IP
|
| Topic 2: Basic Traffic and Service Concepts | - Load balancing fundamentals
|
| Topic 3: Initial Installation and Setup | - Initial system configuration
|
| Topic 4: System Configuration and Management | - System objects
|
| Topic 5: Software Upgrade and Maintenance | - Rollback and recovery
|
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NEW QUESTION # 53
A BIG-IP Administrator needs to install aHotFixon a standalone BIG-IP device.
The device currently hasHD1.1as the Active Boot Location.
The administrator has already reactivated the license and created a UCS archive.
In which sequence should the administrator perform theremaining steps?
Answer: A
Explanation:
When installing a software upgrade with a HotFix on BIG-IP, the correct workflow requires:
* Install the base TMOS imageon an unused boot volume
* Install the corresponding HotFixonto that same boot volume
* Activate the updated boot volumeto 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
OptionCmatches the correct F5 upgrade sequence:
1. Install base image on HD1.2
2. Install HotFix on HD1.2
3. Activate HD1.2
Why the other options are incorrect:
A). Install HotFix before base image
* HotFixes must be appliedafterthe base image; not valid.
B). Installing a HotFix on the active boot location (HD1.1)
* Not recommended and does not use a clean new volume.
* Also does not involve installing the base image.
D). Activating HD1.2 before installing anything
* Cannot activate an empty or invalid boot volume.
Thus,Option Cis the correct sequence.
NEW QUESTION # 54
Which one of the following is aport and protocol combination allowedby theAllow Defaultsetting for Port Lockdown?
Answer: A
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 # 55
For security reasons, a BIG-IP Administrator needs to specify allowable IP ranges for access to the Configuration Utility (WebUI).
The exhibit shows the User Administration section of the Configuration Utility.
The administrator could not find any setting that explicitly restricts access to the Configuration Utility.
Which one of the following is a reason for that?
Answer: B
Explanation:
The screenshot shown is from the User Administration section of the BIG-IP GUI.
This section controls:
Root and Admin passwords
SSH Access
SSH IP Allow settings
However, it does not contain any controls for restricting access to the WebUI (TMUI). BIG-IP does not provide TMUI access restrictions from this part of the GUI.
Access to the web-based Configuration Utility is controlled by the httpd allow list, configured through TMSH:
tmsh modify /sys httpd allow { <IP/subnet> }
This setting is not displayed in the User Administration panel, and in many BIG-IP versions, the
httpd allow list is only configurable from the CLI, not the GUI.
Therefore, the administrator cannot find the setting in the screen shown because:
TMUI access restriction is not located in this GUI section
It must be configured using tmsh under /sys httpd allow
This is why Option A is correct.
NEW QUESTION # 56
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: B
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 # 57
Which configuration file can a BIG-IP administrator use to verify theprovisioned modules?
Answer: B
Explanation:
Provisioning settings define which modules are enabled and how system resources are allocated to them.
These provisioning declarations are stored in:
/config/bigip.conf
This file contains:
* Full module provisioning statements
* TMSH-equivalent provisioning configurations such as:
* sys provision ltm { level nominal }
* sys provision asm { level nominal }
It is theprimary system configuration filethat stores all active provisioning details.
Why the other answers are incorrect
A). /config/bigip.license
* Showslicensedmodules, not provisioned modules.
B). /config/bigip_base.conf
* Stores base networking (VLANs, Self-IPs, routes), not provisioning.
D). config.ucs
* A backup archive, not a live configuration file.
Thus, the correct file to review active module provisioning is/config/bigip.conf.
NEW QUESTION # 58
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