View all questions & answers for the BIG-IP Administration Support and Troubleshooting (F5CAB5) exam
Question 23 Discussion
Comments
Selected Answers: A
The virtual server is expected to handle HTTP requests, but the configuration only includes a TCP profile:
profiles {
tcp { }
}
Without an HTTP profile, the BIG-IP:
Treats the traffic as generic TCP
Cannot properly process HTTP requests
May result in the virtual server not responding to HTTP traffic, especially during testing with browsers or HTTP tools
Adding an HTTP profile enables the BIG-IP to:
Parse HTTP headers
Correctly handle HTTP request/response behavior
Properly process HTTP traffic on port 80
Why the other options are incorrect
B. Add HTTP monitor ❌
The pool already has a TCP monitor, which is sufficient to mark members UP. Monitoring does not affect request handling.
C. Add SNAT Auto Map ❌
SNAT is only required when return routing is broken. There is no indication of a routing issue.
D. No Option ❌
A configuration change is required for proper HTTP traffic handling.
Exam Tip (F5 CAB1 – HTTP Virtual Servers)
If:
The virtual server listens on port 80
Clients send HTTP requests
Only a TCP profile is attached
👉 The fix is to add an HTTP profile.
A BIG-IP Administrator configured a virtual server with a pool of 3 members and selected the Round Robin load balancing method to evenly distribute traffic across the pool members. During initial testing, the virtual server failed to respond to HTTP requests. ltm virtual http_vs { destination 10.10.1.100:http ip-protocol tcp mask 255.255.255.255 pool http_pool profiles { tcp { } } serverssl-use-sni disabled source 0.0.0.0/0 translate-address enabled translate-port enabled } ltm pool http_pool { members { 10.10.1.101:http { address 10.10.1.101 session monitor-enabled state checking } 10.10.1.102:http { address 10.10.1.102 session monitor-enabled state checking } } monitor tcp } What configuration change on the BIG-IP will resolve this issue? (Choose one answer)
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