P.S. Free & New F5CAB3 dumps are available on Google Drive shared by GuideTorrent: https://drive.google.com/open?id=1dTQ_Vb6A8PVwLe7z6eA5dHHRUIb13z4x
GuideTorrent's F5 F5CAB3 exam training materials is the best training materials. If you are an IT staff, it will be your indispensable training materials. Do not take your future betting on tomorrow. GuideTorrent's F5 F5CAB3 exam training materials are absolutely trustworthy. We are dedicated to provide the materials to the world of the candidates who want to participate in IT exam. To get the F5 F5CAB3 Exam Certification is the goal of many IT people & Network professionals. The pass rate of GuideTorrent is incredibly high. We are committed to your success.
| Section | Weight | Objectives |
|---|---|---|
| Modify and Manage Virtual Servers | 50% | - Verify pool configurations associated with virtual servers - Identify and work with iApp objects and iRules - Apply persistence profiles - Configure and modify virtual server properties - Configure encryption and protocol profiles |
| Modify and Manage Pools | 50% | - Set priority groups and service port configurations - Configure and modify pool settings - Configure load balancing methods - Implement health monitors for pools |
Thanks to modern technology, learning online gives people access to a wider range of knowledge, and people have got used to convenience of electronic equipment. As you can see, we are selling our F5CAB3 learning guide in the international market, thus there are three different versions of our F5CAB3 exam materials which are prepared to cater the different demands of various people. We here promise you that our F5CAB3 Certification material is the best in the market, which can definitely exert positive effect on your study. Our BIG-IP Administration Data Plane Configuration learn tool create a kind of relaxing leaning atmosphere that improve the quality as well as the efficiency, on one hand provide conveniences, on the other hand offer great flexibility and mobility for our customers. That’s the reason why you should choose us.
NEW QUESTION # 85
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: B
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 # 86
The BIG-IP Administrator is investigating if better TCP performance is possible for a virtual server. Which built-in profile should be tried first?
Answer: D
Explanation:
F5 provides several pre-configured (built-in) TCP profiles designed to optimize traffic for different network conditions. When an administrator is looking to improve general performance but does not have a specific, narrow use case (like strictly mobile or strictly long-haul WAN), the f5-tcp-progressive profile is the recommended starting point.
The f5-tcp-progressive profile is designed as a modern, high-performance replacement for the older default TCP settings. It incorporates several advanced congestion control algorithms and buffer management techniques that allow it to adapt dynamically to varying network latencies and packet loss scenarios. Unlike f5-tcp-legacy (Option A), which uses older, less efficient stacks, the progressive profile leverages modern TMM (Traffic Management Microkernel) optimizations.
While f5-tcp-mobile (Option B) is highly effective for high-loss cellular networks and f5-tcp-wan (Option D) is optimized for high-latency long-distance links, they can sometimes be too aggressive or poorly suited for standard campus or data center environments. The f5-tcp-progressive profile acts as a "best-of-all-worlds" template that typically provides an immediate performance boost for most web applications by improving window scaling and fast-retransmit behavior. Therefore, it is the procedural "first step" in TCP performance tuning before moving to more specialized, niche profiles.
NEW QUESTION # 87
DNS queries from internal DNS servers fail when sent through a BIG-IP Virtual Server.
Which Virtual Server property should be changed?
Answer: C
Explanation:
Standard DNS queries use UDP. Configuring the Virtual Server for TCP causes DNS traffic to fail.
NEW QUESTION # 88
All pool members are online. All other virtual server settings are at default.
What might alter the load balancing behavior? (Choose one answer)
Answer: C
Explanation:
By default, BIG-IP load balancing algorithms (such as Round Robin) distribute connections evenly across all available pool members. However, persistence profiles override normal load balancing decisions by forcing subsequent connections from a client to be sent to the same pool member.
According to the BIG-IP Administration: Data Plane Configuration documentation:
* Persistence creates a client-to-server mapping that is honored before load balancing algorithms are applied.
* When persistence is enabled, BIG-IP may repeatedly select the same pool member even if others are available.
* This directly alters load balancing behavior.
Why the other options are incorrect:
* A. Adding a OneConnect profileOneConnect optimizes server-side TCP connections but does not change which pool member is selected.
* B. Enabling SNAT automapSNAT affects source address translation, not pool member selection.
* C. Enabling a fallback host in the HTTP profileA fallback host is only used when no pool members are available.
Correct Resolution:
Adding a persistence profile alters load balancing behavior by maintaining client affinity to a specific pool member.
NEW QUESTION # 89
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?
Answer: C
Explanation:
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.
NEW QUESTION # 90
......
Our system is high effective and competent. After the clients pay successfully for the F5CAB3 study materials the system will send the products to the clients by the mails. The clients click on the links in the mails and then they can use the F5CAB3 Study Materials immediately. Our system provides safe purchase procedures to the clients and we guarantee the system won’t bring the virus to the clients’ computers and the successful payment for our F5CAB3 study materials.
F5CAB3 Exam Topics Pdf: https://www.guidetorrent.com/F5CAB3-pdf-free-download.html
DOWNLOAD the newest GuideTorrent F5CAB3 PDF dumps from Cloud Storage for free: https://drive.google.com/open?id=1dTQ_Vb6A8PVwLe7z6eA5dHHRUIb13z4x