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F5 F5CAB2対応資料、F5CAB2認証試験

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F5 F5CAB2対応資料、F5CAB2認証試験

Posted at yesterday 22:06      View：3 | Replies：0        Print      Only Author   [Copy Link] 1#
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F5 BIG-IP Administration Data Plane Concepts (F5CAB2) 認定 F5CAB2 試験問題 (Q24-Q29):質問 # 24
An ecommerce company is experiencing latency issues with online shops during Black Friday's peak season.
The BIG-IP Administrator detects an overall high CPU load on the BIG-IP device and wants to move the top utilized Virtual Servers to a dedicated BIG-IP device. Where should the BIG-IP Administrator determine the problematic Virtual Servers? (Choose one answer)
  • A. System > Platform
  • B. Statistics > Module Statistics > Local Traffic > Virtual Servers
  • C. Local Traffic > Virtual Servers > Virtual Server List
  • D. Local Traffic > Network Map
正解：B
解説：
When troubleshooting performance and latency issues on BIG-IP, especially under peak load conditions, it is critical to identify which Virtual Servers are consuming the most resources. This is a core data plane analysis task.
BIG-IP provides multiple views of configuration and status, but only certain areas expose real-time and historical traffic statistics that correlate directly with CPU usage and throughput.
Why Option C Is Correct:
Statistics > Module Statistics > Local Traffic > Virtual Servers provides:
* Real-time and cumulative statistics per Virtual Server
* Metrics such as:
* Bits in / Bits out
* Packets in / Packets out
* Current connections
* Connection rate
* Total requests
* The ability to identify high-traffic or high-connection Virtual Servers, which are the most likely contributors to elevated CPU utilization These statistics allow the administrator to objectively determine which Virtual Servers are the top consumers of system resources and therefore good candidates for migration to a dedicated BIG-IP device.
Why the Other Options Are Incorrect:
* A. Local Traffic > Virtual Servers > Virtual Server List
* Primarily a configuration view
* Does not provide sufficient performance or utilization statistics to identify CPU-heavy Virtual Servers
* B. System > Platform
* Displays hardware-level information such as CPU cores, memory, disk, and platform type
* Does not break down utilization by Virtual Server
* D. Local Traffic > Network Map
* Provides a logical topology view of Virtual Servers, pools, and pool members
* Useful for understanding relationships, but not for identifying high-utilization Virtual Servers Key Data Plane Concept Reinforced:
To diagnose performance problems and plan traffic redistribution, BIG-IP administrators must rely on Module and object-level statistics, not configuration screens. The Virtual Server statistics view is the authoritative location for identifying traffic hotspots that directly impact CPU and latency during peak events such as Black Friday.

質問 # 25
An organization needs to deploy an HTTP application on a BIG-IP system. The requirements specify hardware acceleration to enhance performance, while HTTP optimization features are not required.
What type of virtual server and associated protocol profile should be used to meet these requirements?
(Choose one answer)
  • A. Type: Stateless Protocol Profile: fastL4
  • B. Type: Standard Protocol Profile: tcp-wan-optimized
  • C. Type: Performance (Layer 4) Protocol Profile: fastL4
  • D. Type: Performance (HTTP) Protocol Profile: fasthttp
正解：C
解説：
To select the correct virtual server type, an administrator must balance the need for L7 intelligence versus raw throughput and hardware offloading:
* Performance (Layer 4) Virtual Server: This type is designed for maximum speed. It uses the fastL4 profile, which allows the BIG-IP system to leverage the ePVA (Embedded Packet Velocity Accelerator) hardware chip. When a Performance (L4) virtual server is used, the system processes packets at the network layer (L4) without looking into the application payload (L7). This fulfills the requirement for hardware acceleration and avoids the overhead of HTTP optimization features, which are not needed in this scenario.
* Performance (HTTP) Virtual Server: While fast, this type uses the fasthttp profile to provide some L7 awareness and optimization (like header insertion or small-scale multiplexing). Since the requirement specifically states HTTP optimization is not required, the L4 variant is more efficient.
* Standard Virtual Server: This is a full-proxy type. While it offers the most features (SSL offload, iRules, Compression), it processes traffic primarily in the TMOS software layer (or via high-level hardware assistance), which is "slower" than the pure hardware switching path of the Performance (L4) type.
* Stateless Virtual Server: This is typically used for specific UDP/ICMP traffic where the system does not need to maintain a connection table. It is not appropriate for standard HTTP (TCP) applications requiring persistent sessions or stateful load balancing.
By choosing Performance (Layer 4) with the fastL4 profile, the organization ensures that the traffic is handled by the hardware acceleration chips, providing the lowest latency and highest throughput possible for their HTTP application.

質問 # 26
Which statement is true concerning cookie persistence?
  • A. If a client's browser accepts cookies, cookie persistence will always cause a cookie to be written to the client's file system.
  • B. Cookie persistence allows persistence even if the data are encrypted from client to pool member.
  • C. Cookie persistence allows persistence independent of IP addresses.
  • D. Cookie persistence uses a cookie that stores the virtual server, pool name, and member IP address in clear text.
正解：C
解説：
Cookie Persistence is a Layer 7 persistence method that leverages an HTTP cookie to track a user session.
* IP Independence: Unlike "Source Address Affinity" (which relies on the client's IP), Cookie persistence identifies the session base16d on a unique token provided by the BIG-IP system. This is crucial for environments where many users share a single gateway (NAT) or where a client's IP might change mid-session.
* Encryption and Decryption: For the BIG-IP to insert or read a cookie, it must be able to see the HTTP header. If the traffic is encrypted end-to-end (SSL Pass-through), the BIG-IP cannot use cookie persistence. SSL must be terminated at the BIG-IP (Option B is false).
* Security: By default, BIG-IP cookies are encoded, not clear text. Modern versions allow for easy encryption of these cookies to prevent information leakage (Option C is false).
* Memory vs. Disk: The default behavior is "session-based" (In-memory). A cookie is only written to the client's file system (disk) if an Expiration is configured in the persistence profile (Option D is false).

質問 # 27
Refer to the exhibit above.




A BIG-IP pool is configured with Priority Group Activation = Less than 2 available members. The pool members have different priority groups and availability states. Which pool members are receiving traffic?
(Choose one answer)
  • A. serv1, serv2, serv3, serv4
  • B. serv1, serv3
  • C. serv1, serv3, serv4
  • D. serv1
正解：C
解説：
This question tests understanding of Priority Group Activation (PGA) and how BIG-IP determines which pool members are eligible to receive traffic.
Key BIG-IP Priority Group Concepts:
* Higher priority group numbers = higher priority
* BIG-IP will only send traffic to the highest priority group that meets the Priority Group Activation condition
* Lower priority groups are activated only when the condition is met
* Only available (green) members count toward the activation threshold
Configuration from the Exhibit:
* Priority Group Activation: Less than 2 available members
* Pool Members and Status:
Pool Member
Priority Group
Status
serv1
2
Active (available)
serv2
2
Inactive (down)
serv3
1
Active (available)
serv4
1
Active (available)
Step-by-Step Traffic Decision:
* BIG-IP first evaluates the highest priority group (Priority Group 2)
* Priority Group 2 has:
* serv1 # available
* serv2 # unavailable
* Total available members = 1
* Activation rule is Less than 2 available members
* Condition is true (1 < 2)
* BIG-IP activates the next lower priority group (Priority Group 1)
* Traffic is now sent to:
* serv1 (Priority Group 2)
* serv3 and serv4 (Priority Group 1)
Final Result:
Traffic is distributed to serv1, serv3, and serv4
Why the Other Options Are Incorrect:
* A - Ignores activation of the lower priority group
* B - serv4 is also active and eligible
* C - serv2 is down and cannot receive traffic
Key Data Plane Concept Reinforced:
Priority Group Activation controls when lower-priority pool members are allowed to receive traffic, based strictly on the number of available members in the higher-priority group. In this case, the failure of one high-priority member caused BIG-IP to expand traffic distribution to lower-priority members to maintain availability.

質問 # 28
A BIG-IP Administrator assigns the default HTTP health monitor to a pool that has three members listening on port 80. When the administrator connects to each pool member using the curl utility, two of the members respond with a status of 404 Not Found, while the third responds with 200 OK. What will the pool show for member availability? (Choose one answer)
  • A. All members online
  • B. Two members offline and one member online
  • C. Two members online and one member offline
  • D. All members offline
正解：B
解説：
Comprehensive and Detailed Explanation From BIG-IP Administration Data Plane Concepts documents:
In BIG-IP LTM, health monitors are used to determine the availability of pool members and directly influence traffic flow decisions in the data plane.
Key characteristics of the default HTTP monitor according to BIG-IP Administration Data Plane Concepts:
Sends an HTTP request (typically GET /)
Expects an HTTP response code of 200 OK
Any response other than 200 is treated as a monitor failure
A failed monitor causes the pool member to be marked offline (down)
In this scenario:
Two pool members return 404 Not Found
A 404 response indicates that the requested object was not found
This does not meet the success criteria of the default HTTP monitor
These two members are therefore marked offline
One pool member returns 200 OK
This matches the expected response
The member is marked online
Resulting Pool Member Availability:
2 members: Offline
1 member: Online
Why the Other Options Are Incorrect:
B - 404 responses are not considered healthy by the default HTTP monitor C - At least one member responds with the expected 200 OK D - Members returning 404 responses fail the monitor and cannot be marked online Key Data Plane Concept Reinforced:
BIG-IP health monitors make binary availability decisions based strictly on configured success criteria. For HTTP monitors, response codes matter-404 is a failure, even if the service is technically reachable.

質問 # 29
......
全てのIT専門人員はF5のF5CAB2の認定試験をよく知っていて、その難しい試験に受かることを望んでいます。F5のF5CAB2の認定試験の認可を取ったら、あなたは望むキャリアを得ることができるようになります。ShikenPASSのF5のF5CAB2試験トレーニング資料を利用したら、望むことを取得できます。
F5CAB2認証試験: https://www.shikenpass.com/F5CAB2-shiken.html
F5CAB2ガイド急流を学習したいときはいつでも障害に遭遇しないと信じています、F5 F5CAB2対応資料 あなたは将来の発展に明確な計画がありますか、F5CAB2試験の準備を勉強するのにそれほど時間はかかりません、教材を購入すると、F5CAB2試験に関する最新情報を入手できます、F5 F5CAB2対応資料 ホットラインはありません、ShikenPASS F5CAB2認証試験は、広範囲にわたる試験資材をカバーするウェブサイトです、F5 F5CAB2対応資料 お客様は弊社のサイトでダウンロードすることができます、F5CAB2認定は、あなたの能力の最高の証明です。
罪悪感も開き直りも感じさせない人、まんまと興味をひかれてくれたらしい小鳥遊に、ひっそりと苦笑する、F5CAB2ガイド急流を学習したいときはいつでも障害に遭遇しないと信じています、あなたは将来の発展に明確な計画がありますか？
効果的F5CAB2｜一番優秀なF5CAB2対応資料試験｜試験の準備方法BIG-IP Administration Data Plane Concepts (F5CAB2)認証試験F5CAB2試験の準備を勉強するのにそれほど時間はかかりません、教材を購入すると、F5CAB2試験に関する最新情報を入手できます、ホットラインはありません。
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