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| Section | Weight | Objectives |
|---|---|---|
| Virtual Servers and Pools | 25-30% | - Load balancing algorithms - Pool configuration and members - Node and pool management - Virtual server types (Standard, Forwarding, Performance L4, Regex) - Address translation and port translation - Priority group activation - Virtual server configuration options |
| Traffic Management Features | 15-20% | - iRules basics and events - HTTP profile settings - Compression and caching profiles - Connection limits and rate shaping - OneConnect - NAT and SNAT concepts |
| LTM Fundamentals | 15-20% | - Licensing types - Configuration architecture and files - Traffic Management Shell (tmsh) CLI - Objects and their relationships - License and provisioning modules |
| Health Monitors and Persistence | 20-25% | - Monitor assignment and interval settings - Monitor types and configurations - OneConnect and connection multiplexing - Fallback host and persistence TTL - Persistence profiles (Cookie, Source Address, Universal) |
| SSL/TLS Configuration | 15-20% | - Certificate validation settings - Certificate and key management - Cipher groups and compatibility - SSL profiles (Client and Server) - SSL termination and re-encryption |
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NEW QUESTION # 88
A BIG-IP Administrator adds new pool members into a highly utilized pool. Users report application failures.
Which pool-level setting should be checked?
Answer: D
Explanation:
Slow Ramp Time prevents new pool members from receiving full traffic immediately, avoiding overload.
NEW QUESTION # 89
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)
Answer: C
Explanation:
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_OPTIMIZEDA 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 192.168.10.0/24The 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.
NEW QUESTION # 90
How can a BIG-IP Administrator identify a configuration object that has been configured within an iApp?
Answer: B
Explanation:
In F5 BIG-IP systems, an iApp is a template-driven framework used to deploy and manage application- specific configurations. When an iApp is deployed, the system creates a specialized folder or "Application Service" container to hold all the resulting Local Traffic Manager (LTM) objects, such as virtual servers, pools, and profiles. This container is visually and programmatically identified by the .app extension in its path name.
The naming convention for these objects follows a specific hierarchical structure: /<partition>/<iapp_name>.
app/<object_name>. For example, if an administrator creates an iApp named "testhttp" in the "/Common" partition, the virtual server created by that iApp would be identified in the configuration (TMSH) and the GUI as /Common/testhttp.app/testhttp. This structure allows the BIG-IP system to distinguish between manually created objects and those managed by the iApp's automation logic.
This identification is crucial because iApp-managed objects typically have Strict Updates enabled, which prevents administrators from making direct manual changes to the object settings outside of the iApp's reconfigure interface. Attempting to modify such an object directly will result in an error message stating that the application service must be updated using an application management interface. By recognizing the .app path and the repeated name within the structure, an administrator can immediately identify that the object belongs to an iApp and should be managed through the iApp's specific management screen rather than standard LTM configuration menus.
NEW QUESTION # 91
Which Virtual Server type prevents the use of a default pool?
Answer: A
Explanation:
Forwarding (IP) virtual servers forward traffic based on routing decisions and do not use pools or pool members.
NEW QUESTION # 92
The BIG-IP Administrator needs to load balance a pool of web servers. Load balancing should consider the number of connections that are active on that pool member.
Which load balancing method meets this requirement? (Choose one answer)
Answer: C
Explanation:
The requirement states that load balancing decisions must be based on the number of active connections on each pool member. This directly maps to the Least Connections (member) load balancing method.
According to the BIG-IP Administration: Data Plane Configuration documentation:
* Least Connections (member) selects the pool member with the fewest active connections at the time of the request.
* This method dynamically adapts to real-time traffic patterns and ensures that more heavily loaded pool members receive fewer new connections.
* It is especially effective for web servers where connection duration may vary and equal distribution of active sessions is desired.
Why the other options are incorrect:
* B. Round RobinDistributes connections sequentially without considering current load or active connections.
* C. Ratio (member)Distributes traffic based on static ratios, not real-time connection counts.
* D. Ratio (node)Uses predefined ratios at the node level and does not account for active connection counts.
Correct Resolution:
Using Least Connections (member) ensures that new connections are directed to the pool member currently handling the fewest active connections, meeting the stated requirement.
NEW QUESTION # 93
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