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F5 F5CAB3日本語版参考書: BIG-IP Administration Data Plane Configuration - PassTest無料で試して簡単に購入

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>> F5CAB3日本語版参考書 <<

F5CAB3試験過去問 & F5CAB3復習問題集

幸せの生活は自分で作られて得ることです。だから、大人気なIT仕事に従事したいあなたは今から準備して努力するのではないでしょうか？さあ、ここで我々社のF5のF5CAB3試験模擬問題を推薦させてくださいませんか。我が社のF5CAB3問題集は必ずあなたの成功へ道の助力になれます。

F5 F5CAB3 認定試験の出題範囲：

トピック
出題範囲

トピック 1

プールの変更と管理に必要な手順の概念を適用する: このドメインでは、ヘルスモニター、負荷分散方法、優先グループ、サービスポート構成などのサーバープールの管理について説明します。

トピック 2

仮想サーバーの変更と管理に必要な手順の概念を適用します。このドメインでは、永続性、暗号化、プロトコルプロファイルの適用、iApp オブジェクトの識別、iRules のレポート、プール構成の表示など、仮想サーバーの管理について説明します。

F5 BIG-IP Administration Data Plane Configuration 認定 F5CAB3 試験問題 (Q13-Q18):

質問 # 13
A BIG-IP Administrator finds the following log entry after a report of user issues connecting to a virtual server:
01010201: Intercept exhaustion on 10.70.110.112 to 192.28.123.250:80 (proto 6) How should the BIG-IP Administrator modify the SNAT pool that is associated with the virtual server?
(Choose one answer)

A. Remove the SNAT pool and apply SNAT Automap
B. Increase the timeout of the SNAT addresses
C. Remove an IP address from the SNAT pool
D. Add an IP address to the SNAT pool

正解：D

解説：
The log message "Intercept exhaustion" indicates that the BIG-IP system has exhausted the available source port translations for one or more SNAT addresses. This occurs when too many concurrent client connections are being translated through a limited number of SNAT IP addresses, and all ephemeral source ports (typically ~64,000 per SNAT IP) are in use.
According to the BIG-IP Administration: Data Plane Configuration documentation:
Each SNAT IP address provides a finite number of available source ports.
When the number of concurrent connections exceeds the available port space, the BIG-IP logs an Intercept exhaustion error and new connections fail.
The recommended resolution is to increase the available SNAT resources by adding additional IP addresses to the SNAT pool.
Why the other options are incorrect:
A). Increase the timeout of the SNAT addressesIncreasing timeouts may actually worsen the problem by keeping ports allocated longer, accelerating port exhaustion.
B). Remove the SNAT pool and apply SNAT AutomapSNAT Automap uses the Self IP addresses on the egress VLAN, which may not provide additional capacity and can introduce routing or design issues. This is not a direct or recommended fix for SNAT exhaustion.
C). Remove an IP address from the SNAT poolThis would reduce the number of available source ports and further exacerbate the intercept exhaustion condition.
Correct Resolution:
By adding an IP address to the SNAT pool, the BIG-IP increases the total number of available source ports, alleviating intercept exhaustion and restoring successful client connections.

質問 # 14
Application administrators are reporting that nodes different from those configured in the pool are selected.
The use of an iRule is suspected.
How can the BIG-IP Administrator check if an iRule is used for this traffic? (Choose two answers)

A. Via the GUI at the Resources tab for the virtual server.
B. Via TMSH with the list /ltm rule <irule> command.
C. Via the GUI at the iRule tab for the virtual server.
D. Via TMSH with the list /ltm virtual <virtual_server> command.

正解：A、D

解説：
In BIG-IP systems, iRules influence traffic only when they are attached to a Virtual Server. If application traffic is being sent to nodes or pool members that are not defined in the pool, this typically indicates that an iRule is overriding the default load-balancing behavior by explicitly selecting a pool or node.
According to BIG-IP Administration: Data Plane Configuration and official F5 guidance:
* iRules are associated with Virtual Servers, not directly with pools or nodes.
* To determine whether an iRule is actively affecting traffic, the administrator must inspect the Virtual Server configuration.
Explanation of the correct answers:
* B. Via the GUI at the Resources tab for the virtual serverThe Resources tab in the Configuration Utility displays all traffic-handling objects applied to the Virtual Server, including assigned iRules. This is the primary GUI location to verify whether an iRule is influencing data plane traffic.
* C. Via TMSH with the list /ltm virtual <virtual_server> commandThis TMSH command displays the full Virtual Server configuration, including any iRules listed under the rules section. It is the authoritative CLI method to confirm iRule usage.
Why the other options are incorrect:
* A. Via TMSH with the list /ltm rule <irule> commandThis command only shows the contents of an iRule and does not indicate whether the iRule is attached to or used by any Virtual Server.
* D. Via the GUI at the iRule tab for the virtual serverBIG-IP does not provide a dedicated "iRule" tab on Virtual Servers. iRules are viewed and managed under the Resources tab.
Correct Conclusion:
To verify whether an iRule is responsible for unexpected node selection, the BIG-IP Administrator must examine the Virtual Server configuration, either through the Resources tab in the GUI or by using TMSH to list the Virtual Server configuration.

質問 # 15
A virtual server is configured to offload SSL from a pool of backend servers. When users connect to the virtual server, they successfully establish an SSL connection but no content is displayed. A packet trace performed on the server shows that the server receives and responds to the request. What should a BIG-IP Administrator do to resolve the problem? (Choose one answer)

A. enable SNAT
B. disable Server SSL profile
C. enable Server SSL profile
D. disable SNAT

正解：A

解説：
This scenario describes a classic case of asymmetric routing in a "one-arm" or non-gateway deployment.
When a BIG-IP system is configured for SSL offloading, the following traffic flow occurs:
* Client-Side: The client establishes a successful SSL/TLS handshake with the Virtual Server. This explains why the user can "successfully establish an SSL connection."
* Server-Side: The BIG-IP decrypts the traffic and forwards it as plain HTTP to the backend server. The packet trace confirms the server receives the HTTP GET request and responds with the content.
* The Routing Failure: By default, the BIG-IP system preserves the client's original source IP address. If the backend server's default gateway is not the BIG-IP system (or if the server is on the same subnet as the client), the server will attempt to send the response directly back to the client's IP address, bypassing the BIG-IP.
* Stateful Drop: Because the BIG-IP is a Full Proxy, it expects the response to return through its own internal state table to be encrypted and sent back to the client. Since the response bypasses the BIG-IP, the BIG-IP connection eventually times out, and the client receives no data despite the server having sent it.
Solution (SNAT): Enabling Secure Network Address Translation (SNAT), specifically SNAT Auto Map, ensures that the BIG-IP replaces the client's source IP with its own internal self-IP before sending the request to the server. This forces the server to send the response back to the BIG-IP, allowing the BIG-IP to complete the transaction and deliver the content to the user.

質問 # 16
In a pool there are 2 pool members (older servers) that can handle fewer connections than the other 3 newer servers.
Which load balancing method would allow more traffic to be directed to the newer servers? (Choose one answer)

A. Round Robin
B. Least Connections (member)
C. Weighted Least Connections (member)
D. Global Availability

正解：C

解説：
This scenario requires unequal load distribution based on server capacity. The newer servers must receive more connections than the older ones, while still dynamically accounting for active connection counts.
According to BIG-IP Administration: Data Plane Configuration documentation:
* Weighted Least Connections (member) combines:
* Connection awareness (least connections)
* Administrator-defined weights (ratios) to reflect server capacity
* Pool members with higher weights receive proportionally more new connections than members with lower weights, even when using the same load balancing algorithm.
Why B is correct:
* Allows assigning higher weights to newer servers and lower weights to older servers
* Ensures smarter traffic distribution based on both capacity and real-time load Why the other options are incorrect:
* A. Global AvailabilityUsed for disaster recovery and site failover, not intra-pool load distribution.
* C. Round RobinDistributes connections evenly without considering server capacity.
* D. Least Connections (member)Balances only by current connection count and does not account for differences in server performance or capacity.
Correct Resolution:
Use Weighted Least Connections (member) and assign higher weights to newer servers so they receive more traffic while protecting older servers from overload.

質問 # 17
A BIG-IP Administrator needs to configure health monitors for a pool containing HTTP, HTTPS, FTP, and SSH services.
Which configuration ensures accurate member status?

A. ICMP + TCP with all
B. HTTP and HTTPS only
C. All monitors with Availability Requirement = all
D. All monitors with Availability Requirement = at least one

正解：D

解説：
Using "at least one" ensures each member is marked up based on its relevant service monitor.

質問 # 18
......

学生時代に出てから、私たちはもっと多くの責任を持って勉強する時間は少なくなりました。IT業界で発展したいなら、F5のF5CAB3試験のような国際的な試験に合格するのは重要です。我々PassTestはITエリートの皆さんの努力であなたにF5のF5CAB3試験に速く合格する方法を提供します。PDF、オンライン、ソフトの3つのバーションのF5のF5CAB3試験の資料は独自の長所があってあなたは我々のデモを利用してから自分の愛用する版を選ぶことができます。

F5CAB3試験過去問: https://www.passtest.jp/F5/F5CAB3-shiken.html

BONUS！！！ PassTest F5CAB3ダンプの一部を無料でダウンロード：https://drive.google.com/open?id=14u6lXnRrov3w0Iie3k8wuVD8JwCjdtLL

Matt Fisher Matt Fisher

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