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| Section | Objectives |
|---|---|
| Advanced Traffic Control | - Monitoring and Health Checks
|
| Traffic Processing and Policies | - Profiles and Protocol Handling
|
| High Availability and Troubleshooting | - Device Service Clustering (DSC)
|
| F5 BIG-IP System Fundamentals | - Architecture Overview of BIG-IP Platform
|
| Traffic Management and Load Balancing | - Load Balancing Methods
|
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The F5 F5CAB3 certification exam offers a great opportunity to advance your career. With the BIG-IP Administration Data Plane Configuration certification exam beginners and experienced professionals can demonstrate their expertise and knowledge. After passing the BIG-IP Administration Data Plane Configuration (F5CAB3) exam you can stand out in a crowded job market. The F5CAB3 certification exam shows that you have taken the time and effort to learn the necessary skills and have met the standards in the market.
NEW QUESTION # 15
Refer to the exhibit.
A BIG-IP Administrator configures a Virtual Server to handle HTTPS traffic. Users report that the application is NOT working. Which additional configuration is required to resolve this issue?
Answer: A
Explanation:
According to the provided exhibit, the "SSL Profile (Client)" section in the Virtual Server configuration is empty. For a BIG-IP system to process HTTPS traffic, it must act as an SSL/TLS endpoint. This process, known as SSL Termination or SSL Offload, requires the assignment of a Client SSL Profile to the Virtual Server. Without this profile, the BIG-IP does not have the necessary certificate and private key information to perform the SSL handshake with the client's browser. Consequently, when a user attempts to connect via HTTPS, the TCP connection may establish, but the SSL handshake will fail because the BIG-IP will not know how to decrypt the incoming encrypted packets.
A Client SSL profile defines the ciphers, certificates, and keys that the BIG-IP uses to communicate securely with the client. In a standard HTTPS deployment, the BIG-IP decrypts the traffic and can then send it to the backend pool members either as plain text (header insertion/manipulation) or re-encrypt it using a Server SSL profile. While a Server SSL profile (Option C) is needed if the backend servers themselves require HTTPS, the initial failure for a user reaching a Virtual Server is almost always the lack of a Client SSL profile to terminate the user's connection. Changing the Service Port to HTTP (Option D) would be incorrect because the goal is to handle HTTPS traffic (typically port 443). Assigning the "clientssl" or a custom client-side profile from the "Available" list to the "Selected" list in the GUI is the mandatory step to make the Virtual Server operational for secure web traffic.
NEW QUESTION # 16
The BIG-IP Administrator has to provide encrypted communication between users and the virtual server they access. Multiple hostnames are configured in DNS with the same IP address.
Which profile type and setting in the profile should be used? (Choose one answer)
Answer: D
Explanation:
When multiple hostnames resolve to the same IP address and encrypted communication is required, the BIG-IP must be able to present the correct SSL certificate based on the hostname requested by the client. This is accomplished using Server Name Indication (SNI).
According to BIG-IP Administration: Data Plane Configuration documentation:
SNI is a client-side TLS extension, where the client includes the requested hostname during the SSL handshake.
BIG-IP evaluates this hostname using the Client SSL profile, not the Server SSL profile.
The "Server Name" setting in the Client SSL profile enables BIG-IP to select the appropriate SSL certificate for the requested hostname.
Why option C is correct:
Client SSL profile handles inbound (client-side) encryption.
Server Name enables SNI-based certificate selection when multiple DNS names share the same virtual server IP.
Why the other options are incorrect:
A . Client SSL, Client Name
There is no Client SSL setting called Client Name for SNI certificate selection.
B . Server SSL, Server Name
Server SSL is used for encryption between BIG-IP and backend servers, not for client-side hostname identification.
D . Server SSL, Client Name
Server SSL does not process client-requested hostnames during TLS negotiation.
Correct Resolution:
Configure a Client SSL profile and enable the Server Name (SNI) setting to support multiple encrypted hostnames on the same virtual server IP.
NEW QUESTION # 17
A BIG-IP Administrator uses backend servers to host multiple services per server. There are multiple virtual servers and pools defined, referencing the same backend servers.
Which load balancing algorithm is most appropriate to have an equal number of connections on each backend server?
Answer: C
Explanation:
Least Connections (node) balances connections across the physical server regardless of how many services or pool members exist on that node.
NEW QUESTION # 18
Which Virtual Server type prevents the use of a default pool?
Answer: D
Explanation:
Forwarding (IP) virtual servers forward traffic based on routing decisions and do not use pools or pool members.
NEW QUESTION # 19
A BIG-IP Administrator configures an SSH pool with five members.
Which health monitor should be applied?
Answer: A
Explanation:
SSH is a TCP-based service. A TCP monitor validates service availability without requiring application-layer inspection.
NEW QUESTION # 20
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