ハイパスレートのF5CAB1模擬対策問題一回合格-有難いF5CAB1日本語学習内容

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F5 F5CAB1 Exam Syllabus Topics:

Section	Objectives
Topic 1: System Configuration and Management	- Access and administration 1. TMOS command line (tmsh) 2. GUI (Configuration Utility) - System objects 1. Basic routing configuration 2. Network objects (VLANs, self IPs)
Topic 2: BIG-IP Platform Fundamentals	- Basic networking concepts in BIG-IP 1. Self IPs and VLANs 2. Routes and gateways - F5 BIG-IP architecture overview 1. Traffic processing flow (TMM concept) 2. Management vs data plane separation
Topic 3: Basic Traffic and Service Concepts	- Load balancing fundamentals 1. Health monitors overview 2. Virtual servers and pools
Topic 4: Initial Installation and Setup	- Deployment options 1. Hardware appliance initialization 2. Virtual edition deployment - Initial system configuration 1. Management IP configuration 2. System time and NTP setup 3. License activation
Topic 5: Software Upgrade and Maintenance	- Upgrade preparation 1. System backup (UCS archive) 2. Version compatibility checks - Upgrade process 1. Boot location management 2. Image installation and activation - Rollback and recovery 1. Restoring UCS backups 2. Fail-safe rollback procedures

>> F5CAB1模擬対策問題 <<

試験の準備方法-100％合格率のF5CAB1模擬対策問題試験-実際的なF5CAB1日本語学習内容

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F5 BIG-IP Administration Install, Initial Configuration, and Upgrade 認定 F5CAB1 試験問題 (Q58-Q63):

質問 # 58
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 verifies the internal checksum
B. The system performs a reboot into a new partition
C. The system copies the image to /var/local/images/

正解：A

解説：
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

質問 # 59
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.)

A. 10.0.0.254
B. 10.0.0.100
C. 100.0.1.10
D. 10.0.0.256
E. 100.0.0.10

正解：A、B

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 # 60
Which port is an exception to the Port Lockdown function of Self-IPs if a device-group synchronization cluster is configured?

A. TCP 443
B. TCP 4353
C. UDP 53

正解：B

解説：
Self-IPs implement a security feature known as Port Lockdown, which limits which services are reachable on a Self-IP.
However, certain services required for BIG-IP device-to-device communication bypass Port Lockdown to ensure cluster and HA functionality.
TCP 4353
TCP port 4353 is used by Device Service Clustering (DSC) for:
Device trust establishment
Configuration synchronization
Failover communication
Because BIG-IP devices must always be able to communicate for HA functions to remain operational, port 4353 is exempt from Port Lockdown rules.

質問 # 61
What are the two options for securing a BIG-IP's management interface? (Choose two.)

A. Use the BIG-IP's Self-IP addresses for administrative access rather than the management interface.
B. Restrict administrative HTTPS and SSH access to specific IP addresses or IP ranges.
C. Block all management-interface administrative HTTPS and SSH service ports to prevent access.
D. Limiting network access through the management interface to a trusted/secured network VLAN.

正解：B、D

解説：
Securing the BIG-IP management interface is a fundamental administrative responsibility. F5 best practices emphasize restricting who can reach the management port and ensuring that only authorized systems are allowed access.
A). Limiting management access to trusted network segments
F5 recommends placing the management interface on a dedicated, isolated, and secured management network or VLAN, rather than exposing it to production or untrusted networks.
This reduces the attack surface by ensuring only trusted segments have visibility to administrative interfaces.
D). Restricting management access by IP or subnet
F5 BIG-IP uses the /sys httpd allow list (for HTTPS) and configuration options in sshd (for SSH) to control which IP addresses or subnets can access the device.
By specifying only known administrative IPs or ranges, unauthorized users cannot reach the login services.

質問 # 62
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?

A. Restricting access to the Configuration Utility can only be done from the Command Line Interface
B. The administrator must restrict access by IP address for SSH, which will implicitly restrict access to the Configuration Utility
C. The administrator needs to switch to the "Advanced" view mode in order to display the relevant setting
D. To avoid locking out the administrator, recent versions of BIG-IP no longer allow restricting administrator access to the Configuration Utility by source IP address

正解：A

解説：
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.

質問 # 63
......

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