F5 F5CAB3資格認定はバッジのような存在で、あなたの所有する専業技術と能力を上司に直ちに知られさせます。次のジョブプロモーション、プロジェクタとチャンスを申し込むとき、F5 F5CAB3資格認定はライバルに先立つのを助け、あなたの大業を成し遂げられます。
| トピック | 出題範囲 |
|---|---|
| トピック 1 |
|
| トピック 2 |
|
F5CAB3の認定を取得するのが簡単ではないことが心配な場合。 F5CAB3試験の質問は、お客様のニーズを満たすことができます。一度F5CAB3試験資料を使用すれば、時間の浪費を心配する必要はありません。高い効率が私たちの大きな利点です。 F5CAB3学習教材の練習と統合に20〜30時間を費やすだけで、良い結果が得られます。長年の開発プラクティスの後、F5CAB3テストトレントは絶対に最高です。 F5CAB3試験の資料を選択すると、より良い未来を受け入れることができます。
質問 # 14
Refer to the exhibit.
A BIG-IP Administrator creates a new Virtual Server to load balance SSH traffic. Users are unable to log on to the servers.
What should the BIG-IP Administrator do to resolve the issue?
正解：A
解説：
The configuration error is the HTTP Profile = http setting. The virtual server is intended to load balance SSH
, which operates over TCP port 22 and is not an HTTP application protocol. The configured TCP protocol and TCP profile are therefore appropriate, but an HTTP profile should not be attached to this SSH virtual server.
F5 documentation states that an HTTP profile defines how BIG-IP manages HTTP traffic . The standard http profile operates in Reverse proxy mode by default and invokes BIG-IP ' s HTTP protocol processing. F5 separately documents Transparent HTTP proxy mode as the mode that can forward invalid HTTP traffic instead of dropping it. This distinction is important because an SSH protocol exchange is not syntactically valid HTTP traffic.
Setting HTTP Profile to None removes unnecessary Layer 7 HTTP parsing and leaves the virtual server handling the SSH connection through its TCP profile. The other changes are inappropriate: SSH requires TCP rather than UDP; the source address does not need to equal the virtual server ' s destination IP; and changing the destination to 0.0.0.0/0 is unrelated to the application-protocol mismatch.
Reference Topics: Local Traffic Profiles # HTTP Profiles , Proxy Mode , TCP profiles , Virtual Server profile assignment .
質問 # 15
A Standard Virtual Server for a web application is configured with Automap for the Source Address Translation option. The original source address of the client must be known by the backend servers. What should the BIG-IP Administrator configure to meet this requirement?
正解：A
解説：
SNAT Automap is a common configuration that replaces the client ' s original source IP address with one of the BIG-IP ' s self IP addresses. This ensures that the backend servers send return traffic back through the BIG-IP, which is necessary for the ADC to process the traffic correctly. However, a side effect of SNAT is that the backend servers only see the BIG-IP ' s IP in their logs, losing visibility into the true identity of the client.
To resolve this while still using SNAT for routing purposes, the administrator must configure the BIG-IP to " pass " the client ' s IP address at the application layer. This is achieved by using an HTTP Profile with the Insert X-Forwarded-For setting enabled. When this profile is applied to the Virtual Server, the BIG-IP intercepts the HTTP request, adds a header (X-Forwarded-For) containing the client ' s original IP, and then forwards the modified request to the server. The backend web server can then be configured to read this header and log the original client IP instead of the BIG-IP ' s SNAT address.
Other options are incorrect for this requirement. Performance (HTTP) (Option A) is a virtual server type optimized for speed but often lacks the full Layer 7 header manipulation capabilities of a Standard Virtual Server. SNAT Pool with the client IP (Option C) is technically impossible as SNAT pools use static, pre- defined IPs. There is no such thing as an HTTP Transparent profile (Option D) in standard BIG-IP administration for this purpose. The X-Forwarded-For header insertion within the HTTP profile is the standard procedural method for maintaining client visibility in SNAT-enabled environments.
質問 # 16
During a high-demand event, the BIG-IP Administrator needs to limit the number of new connections per second to a Virtual Server.
What should be applied?
正解：D
解説：
Connection rate limits restrict how many new connections are accepted per second, protecting application resources.
質問 # 17
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)
正解：D
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 # 18
Refer to the exhibit.
DNS queries from two internal DNS servers are being load-balanced to external DNS servers via a virtual server on a BIG-IP device. The DNS queries originate from:
192.168.10.100
192.168.10.200
and target:
192.168.2.150
All DNS queries destined for the external DNS servers fail.
Which property change should the BIG-IP Administrator make in the Virtual Server to resolve this issue? (Choose one answer)
正解：D
解説：
DNS traffic is primarily transported using UDP port 53. In the exhibit, the Virtual Server is configured with the Protocol set to TCP, which prevents standard DNS queries from being processed correctly. BIG-IP Virtual Servers must be configured with the correct Layer 4 protocol to match the application traffic they are handling.
According to the BIG-IP Administration: Data Plane Configuration documentation:
The Protocol setting on a Virtual Server defines whether traffic is processed as TCP, UDP, or another supported transport protocol.
Standard DNS queries and responses use UDP, while TCP is only required for DNS zone transfers (AXFR) or exceptionally large responses.
When a DNS Virtual Server is incorrectly configured with TCP, UDP-based DNS queries are dropped, causing all requests to fail.
Why the other options are incorrect:
A . Protocol profile (Client) to DNS_OPTIMIZED
A DNS profile enhances DNS functionality but does not correct an incorrect transport protocol configuration.
B . Type to Performance (HTTP)
Performance (HTTP) Virtual Servers are designed for HTTP traffic and are not suitable for DNS services.
C . Source Address to 192.168.10.0/24
The existing source IPs already fall within the allowed range, so this setting does not address the failure.
Correct Resolution:
Changing the Protocol to UDP aligns the Virtual Server with standard DNS transport requirements, allowing DNS queries to be successfully processed and load-balanced.
質問 # 19
......
現在の仕事に満足していますか。自分がやっていることに満足していますか。自分のレベルを高めたいですか。では、仕事に役に立つスキルをもっと身に付けましょう。もちろん、IT業界で働いているあなたはIT認定試験を受けて資格を取得することは一番良い選択です。それはより良く自分自身を向上させることができますから。もっと大切なのは、あなたもより多くの仕事のスキルをマスターしたことを証明することができます。では、はやくF5のF5CAB3認定試験を受験しましょう。この試験はあなたが自分の念願を達成するのを助けることができます。試験に合格する自信を持たなくても大丈夫です。It-Passportsへ来てあなたがほしいヘルパーと試験の準備ツールを見つけることができますから。It-Passportsの資料はきっとあなたがF5CAB3試験の認証資格を取ることを助けられます。
F5CAB3前提条件: https://www.it-passports.com/F5CAB3.html