ちなみに、Pass4Test F5CAB1の一部をクラウドストレージからダウンロードできます：https://drive.google.com/open?id=1XM_09f458CsrkxsvWWa14_aRSuprzVGm
世界で、多くの人はF5CAB1学習教材を利用しています。ここから見ると、F5CAB1学習教材はいい資料です。彼らはF5CAB1学習教材を勉強したら、F5CAB1試験に合格しました。だから、彼らはF5CAB1学習教材に対して、感謝の気持ちです。つまり、あなたもF5CAB1学習教材を購入すれば、後悔することはありません。
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我々の商品の質量を保証するために、専門家たちは商品の開発を研修しています。過去の試験のデータを基づいて、F5CAB1問題集を開発しています。現在でも、問題集の更新に働いています。複数の更新を通して、今の的中率高いF5CAB1問題集になりました。我々のF5CAB1問題集で試験に合格することができると信じています。
質問 # 43
In order to configure allowed IP addresses for SSH access to a BIG-IP device, the BIG-IP Administrator has issued the commands shown in the exhibit.
Which IP addresses will have SSH access after issuing the shown commands?
(Choose two.)
正解：C、D
解説：
From the exhibit, the administrator performs the following actions:
* Displays the current SSH allow configuration:
tmsh list sys sshd allow
allow { ALL }
* Replaces the existing SSH allow list with a specific subnet:
tmsh modify sys sshd allow replace-all-with { 10.0.0.0/24 }
* Confirms the updated configuration:
tmsh list sys sshd allow
allow { 10.0.0.0/24 }
This configuration restricts SSH access to only hosts that fall within the 10.0.0.0/24 network.
Evaluation of the options
A). 10.0.0.100
This address is within the 10.0.0.0/24 subnet and is a valid host address, so SSH access is permitted.
B). 10.0.0.254
This address is also within the 10.0.0.0/24 subnet and is a valid host address, so SSH access is permitted.
C). 10.0.0.256
This is not a valid IP address because an IPv4 octet cannot exceed 255.
D). 100.0.1.10
This address is outside the configured 10.0.0.0/24 subnet and will not be allowed.
E). 100.0.0.10
This address is also outside the configured subnet and will not be allowed.
質問 # 44
Which two items demonstrate the creation of a new volume for software images? (Choose two.)
正解：C、D
解説：
In BIG-IP, software images are installed on boot volumes (for example, HD1.1, HD1.2, HD1.3, etc.).
To install software on a new volume, the administrator must instruct the system to create a new boot location before installation.
There are two correct ways to create a new volume:
A). tmsh command (with correct syntax)
tmsh install software image /shared/images/BIGIP-<version>.iso volume HD1.5 create-volume This syntax correctly includes:
install software image
full path to ISO (/shared/images/...)
volume name (HD1.5)
create-volume keyword
This instructs BIG-IP to create the new boot volume as part of the installation.
C). Using the GUI System > Disk Management
From the Disk Management menu, the administrator can:
Select "New Volume"
Enter the volume identifier (e.g., HD1.5)
Apply changes
This GUI method is officially supported and explicitly creates a new boot volume before installing the software.
質問 # 45
A BIG-IP Administrator is responsible for deploying a new software image on an F5 BIG-IP HA pair and has scheduled a one-hour maintenance window.
With a focus on minimizing service disruption, which of the following strategies is the most appropriate?
正解：D
解説：
For BIG-IP high-availability (HA) pairs, F5's recommended upgrade workflow prioritizesservice continuity, predictable failover, andminimal downtime. The established best-practice sequence is:
* Upgrade the standby unit first
* Because the standby device is not passing traffic, upgrading and rebooting it does not impact production.
* Boot the standby unit into the newly installed version
* Once online, the administrator verifies basic health, device sync status, cluster communication, and module functionality.
* Perform a controlled failover to the upgraded unit
* Traffic shifts to the newly upgraded device, allowing validation of the configuration and operational behavior under real traffic loads.
* Upgrade the second device (now standby)
* The previously active device becomes standby after failover, allowing it to be safely upgraded and rebooted without interruption.
This phased approach ensures only one device is unavailable at a time, allowing continuous traffic flow throughout the upgrade process.
Why the Correct Answer is C
OptionCexactly matches F5's documented production-safe upgrade method:
* Upgrade thestandbynode first
* Reboot into new image
* Failover to upgraded device
* Validate
* Upgrade the remaining (now-standby) device
This procedure minimizes risk and traffic disruption.
Why the other options are incorrect:
A). Upgrade the active node first
* Upgrading the active device requires removing it from service and failing over abruptly. This is not recommended and increases service disruption risk.
B). Resetting device trust
* Resetting trust is unnecessary and can disrupt configuration sync, peer communication, and cluster operation. It is not part of any standard upgrade workflow.
D). Upgrading and rebooting both nodes simultaneously
* This would causetotal outage, because both HA members would be unavailable at the same time.
質問 # 46
What will setting a Self IP to"Allow None"for Port Lockdown do?
正解：B
解説：
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.
質問 # 47
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?
正解：A
解説：
The screenshot shown is from theUser Administrationsection 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 thehttpd 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 isonly configurable from the CLI, not the GUI.
Therefore, the administrator cannot find the setting in the screen shown because:
* TMUI access restriction isnotlocated in this GUI section
* It must be configured usingtmshunder/sys httpd allow
This is whyOption Ais correct.
質問 # 48
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F5CAB1準備資料で20〜30時間学習した直後に、今後の試験に自信を持つことができるという誇張はありません。何万人ものお客様が弊社の試験資料の恩恵を受け、F5CAB1試験に簡単に合格しました。データは、私たちのハイパス率が信じられないほど98％から100％であることを示しました。間違いなく、あなたの成功はF5CAB1トレーニングガイドで100％保証されています。リンクをクリックするだけで概要を表示できるのが便利であり、あらゆる種類のF5CAB1バージョンを体験できます。
F5CAB1テスト参考書: https://www.pass4test.jp/F5CAB1.html
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