さらに、Topexam F5CAB2ダンプの一部が現在無料で提供されています：https://drive.google.com/open?id=1UTitsHjuHMjyDjNxTadxP6XeM1LhINYf
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TopexamはF5のF5CAB2認定試験に関する包括的な資料を提供します。当社のトレーニング資料は専門家が研究した最新の研究資料です。Topexamを利用したら、あなたはいつでも最新の問題集と解答を持つことができます。当社のトレーニングツールは定期的に更新しますから、常に変わっている試験の目標に従っています。実際には成功は遠くないです。Topexamが与えた道に沿って、あなたの成功への独自の道に行くことができるようになります
質問 # 56
An application is configured so that the same pool member must be used for an entire session, as well as for HTTP and FTP traffic. A user reports that a session has terminated, and the user must restart the session. The BIG-IP Administrator determines that the active BIG-IP device failed over to the standby BIG-IP device. Which configuration settings should the BIG-IP Administrator verify to ensure proper behavior when BIG-IP failover occurs?
正解：B
解説：
In this scenario, two specific High Availability and Persistence requirements must be met to ensure session continuity during a failover.
Persistence Mirroring: By default, persistence records (which map a client to a specific server) exist only on the memory of the active BIG-IP. If a failover occurs, the standby unit has no knowledge of these sessions and will re-load-balance the client, likely to a different server. Enabling Persistence Mirroring ensures that the persistence table is synchronized in real-time to the standby peer.
Match Across Services: The requirement specifies that the session must persist across both HTTP and FTP. These are different Virtual Servers (and likely different ports). The Match Across Services setting in the persistence profile allows the BIG-IP to use the same persistence record for any Virtual Server that shares the same IP address and pool, regardless of the service port.
質問 # 57
The BIG-IP Administrator wants to provide quick failover between the F5 LTM devices that are configured in an HA Pair with a single traffic-group. The BIG-IP Administrator wants to implement the Mac Masquerade feature for this quick failover and run this command: tmsh modify /cm traffic-group traffic-group-1 mac 02:
12:34:56:00:00. However, the Network Operations team has identified an issue with the use of the same MAC address being used within different VLANs. As a result of this, the BIG-IP Administrator must implement the Per-VLAN Mac Masquerade in order to have a unique MAC address on each VLAN: tmsh modify /sys db tm.
macmasqaddr_per_vlan value true. What would be the resulting MAC address on a tagged VLAN of 1501?
正解：A
解説：
MAC Masquerade allows a traffic group to use a shared MAC address to speed up failover. When the system DB variable tm.macmasqaddr_per_vlan is enabled, the BIG-IP generates a unique MAC address for each VLAN by algorithmically modifying the base MAC address using theVLAN ID.
The calculation forVLAN 1501works as follows:
* Base MAC:The administrator set the base to 02:12:34:56:00:00.
* VLAN ID Conversion:The decimal VLAN ID (1501) must be converted into hexadecimal.
* $1501 \div 16 = 93$ remainder13(Din hex)
* $93 \div 16 = 5$ remainder13(Din hex)
* $5 \div 16 = 0$ remainder5
* Result: $1501$ (Decimal) =05DD(Hex).
* Substitution:The BIG-IP replaces the last two octets of the base MAC address with the hexadecimal representation of the VLAN ID.
* Final Result:02:12:34:56:05:dd.
質問 # 58
Active connections to pool members are unevenly distributed. The load balancing method is Least Connections (member). Priority Group Activation is disabled.
What is a potential cause of the uneven distribution? (Choose one answer)
正解：D
解説：
Comprehensive and Detailed Explanation (BIG-IP Administration - Data Plane Concepts):
With Least Connections (member), BIG-IP attempts to send new connections to the pool member with the fewest current connections. In a perfectly "stateless" scenario (no affinity), this often trends toward a fairly even distribution over time.
However, persistence overrides load balancing:
When a persistence profile is applied, BIG-IP will continue sending a client (or client group) to the same pool member based on the persistence record (cookie / source address / SSL session ID, etc.).
This means even if another pool member has fewer connections, BIG-IP may still select the persisted member to honor session affinity.
The result can be uneven active connection counts, even though the configured load balancing method is Least Connections.
Why the other options are not the best cause:
A . Priority Group Activation is disabled
Priority Group Activation only affects selection when priority groups are configured; disabling it does not inherently create uneven distribution under Least Connections.
B . SSL Profile Server is applied
A server-side SSL profile affects encryption to pool members, but it does not by itself cause skewed selection across pool members. (Skew could happen indirectly if members have different performance/latency, but that's not the primary, expected exam answer.) D . Incorrect load balancing method Least Connections is a valid method and does not itself explain unevenness unless something is overriding it (like persistence) or pool members are not all eligible.
Conclusion:
A persistence profile is the most common and expected reason that active connections become unevenly distributed, because persistence takes precedence over the Least Connections load-balancing decision.
質問 # 59
Which three iRule events are likely to be seen in iRules designed to select a pool for load balancing? (Choose three.)
正解：B、D、G
質問 # 60
An application is configured so that the same pool member must be used for an entire session, and this behavior must persist across HTTP and FTP traffic. A user reports that a session terminates and must be restarted after the active BIG-IP device fails over to the standby device.
Which configuration settings should the BIG-IP Administrator verify to ensure proper behavior when BIG-IP failover occurs? (Choose one answer)
正解：A
解説：
This scenario combines session continuity, multiple protocols (HTTP and FTP), and HA failover behavior, which directly implicates persistence handling across devices and services.
Key Requirements Breakdown
Same pool member for entire session
Session must survive failover
Session must span multiple services (HTTP and FTP)
Why Persistence Mirroring + Match Across Services Is Required
Persistence Mirroring
Ensures persistence records are synchronized from the active BIG-IP to the standby BIG-IP.
Without mirroring:
After failover, the standby device has no persistence table
Clients are load-balanced again
Sessions break, forcing users to restart
Persistence mirroring is essential for session continuity during failover Match Across Services Allows a single persistence record to be shared across multiple virtual servers / protocols Required when:
HTTP and FTP must use the same pool member
Multiple services are part of a single application session
Together, these settings ensure:
Persistence survives device failover
Persistence is honored across HTTP and FTP
Why the Other Options Are Incorrect
A . Cookie persistence and session timeout
Cookie persistence only applies to HTTP and does not address FTP or failover synchronization.
B . Stateful failover and Network Failover detection
Stateful failover applies to connection state, not persistence records, and does not link HTTP and FTP sessions.
D . SYN-cookie insertion threshold and connection low-water mark
These are DoS / SYN flood protection settings, unrelated to persistence or HA behavior.
質問 # 61
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あなたはいい仕事を見つけたい場合、F5CAB2参考資料を選択してください。多くのお客様はF5CAB2試験参考書を選択したら、F5CAB2認定試験資格証明書を取得しました。また、F5のサービスもいいし、２４時間のサービスを提供できます。だから、それは最もいい資料です。
F5CAB2日本語認定: https://www.topexam.jp/F5CAB2_shiken.html
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