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| Section | Weight | Objectives |
|---|---|---|
| Topic 1: Modify and Manage Pools | 50% | - Configure load balancing methods - Configure and modify pool settings - Set priority groups and service port configurations - Implement health monitors for pools |
| Topic 2: Modify and Manage Virtual Servers | 50% | - Configure and modify virtual server properties - Apply persistence profiles - Configure encryption and protocol profiles - Identify and work with iApp objects and iRules - Verify pool configurations associated with virtual servers |
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NEW QUESTION # 85
Which type of Virtual Server requires the use of a FastL4 profile?
Answer: C
Explanation:
Performance (Layer 4) virtual servers rely on FastL4 profiles to provide high-speed L4 processing without full proxy overhead.
Below is BATCH 2 (next 10 questions) extracted only from your uploaded document that are clearly related to BIG-IP Administration: Data Plane Configuration topics.
#As requested, I have strictly excluded questions related to:
* Licensing
* HA / Device Trust / Sync-only
* Logging destinations
* User roles
* Hardware, EUD, support processes
* System-only administration
Source: Your uploaded TMOS Administration v2.0 document
NEW QUESTION # 86
A BIG-IP Administrator needs to apply a health monitor for a pool of database servers named DB_Pool that uses TCP port 1521. Where should the BIG-IP Administrator apply this monitor?
Answer: C
Explanation:
In BIG-IP configuration, health monitors can be applied at three distinct levels: the node, the pool, or the individual pool member. To ensure that a specific application service-in this case, a database service on port
1521-is functioning correctly for the entire pool, the administrator should apply the monitor at the pool level. Navigating to Local Traffic > Pools > DB.Pool > Properties allows the administrator to select one or more monitors from the "Available" list and move them to the "Active" list.
Applying a monitor at the pool property level ensures that the BIG-IP checks the health of every member assigned to that pool using the same logic. If a database-specific monitor (such as a TCP handshake or an Oracle/SQL check) fails for a specific member, the BIG-IP marks that member as "offline" for that specific pool, preventing new connections from being sent to it. While monitors can be applied to Pool Members (Option D) to give different members unique monitoring logic, it is more administratively efficient to apply it to the pool properties when all servers are expected to behave identically. Applying it to Nodes (Option C) would only verify that the IP address is up (typically via ICMP), which does not guarantee that the database service on port 1521 is actually responding. Finally, Profiles (Option A) are used to define how traffic is handled once it is accepted by a Virtual Server, not for the proactive health checking of backend resources.
Therefore, the pool properties page is the standard location for configuring service-specific availability requirements.
NEW QUESTION # 87
A Standard Virtual Server reports poor network performance for Internet-based clients.
What configuration should be applied?
Answer: A
Explanation:
WAN TCP profiles are optimized for high latency and packet loss typical of Internet clients, while LAN profiles are ideal for backend servers.
NEW QUESTION # 88
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)
Answer: A,B
Explanation:
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.
NEW QUESTION # 89
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? (Choose one answer)
Answer: B
Explanation:
SSH is a Layer 4 TCP-based protocol that operates on TCP port 22 and does not use HTTP in any capacity. In the exhibit, the Virtual Server is configured with an HTTP Profile applied, which is inappropriate for SSH traffic and causes connection failures.
According to the BIG-IP Administration: Data Plane Configuration documentation:
* An HTTP profile must only be applied to Virtual Servers handling HTTP or HTTPS traffic.
* When an HTTP profile is attached, BIG-IP expects HTTP headers and attempts to parse application- layer data.
* Non-HTTP protocols such as SSH, FTP (control), SMTP, and other raw TCP services will fail if an HTTP profile is enabled.
Why the other options are incorrect:
* A. Set Protocol to UDPSSH uses TCP, not UDP. Changing the protocol would break SSH entirely.
* B. Set Source Address to 10.1.1.2The source address setting controls client access restrictions and is unrelated to protocol parsing issues.
* C. Set Destination Address/Mask to 0.0.0.0/0The destination address is already valid for a specific SSH service and does not impact protocol handling.
Correct Resolution:
The BIG-IP Administrator should remove the HTTP Profile (set it to None) so the Virtual Server functions as a pure Layer 4 TCP service, allowing SSH connections to pass through successfully.
NEW QUESTION # 90
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