F5 301B Exam Questions & Answers

Which iRule statement demotes a virtual server from CMP?

A. set ::foo 123

B. set static::foo 123

C. persist source_addr 1800

D. [ class match $HTTP_CONTENT contains my_data_class ]

What does the following iRule do?

when CLIENT_ACCEPTED { if { [matchclass [IP::client_addr] equals WebClient1-Whitelist1] }{ #log local0. "Valid client IP: [IP::client_addr] - forwarding traffic" #Pool WebClient1

} else { log local0. "Invalid client IP: [IP::client_addr] - discarding" discard } }

A. The iRule compares a client IP to a list. If the client IP is on the list, discard and log the discard.

B. The iRule compares a client IP to a list. If the client IP is NOT on the list, discard and log the discard.

C. The iRule compares a client IP to a list. If the client IP is on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

D. The iRule compares a client IP to a list. If the client IP is NOT on the list, the client is sent to Pool WebClient1. Otherwise, discard and log the discard.

-- Exhibit

-- Exhibit -Refer to the exhibit.

A company uses a complex piece of client software that connects to one or more virtual servers (VS) hosted on an LTM device. The client software is experiencing issues. An LTM Specialist is tasked with finding the cause of the problem.

The LTM Specialist has the tcpdump extract and knows the client software has at least one connection to a VS on port 1990. However, when a tcpdump runs on the internal VLAN, there is no record of port 1990 in the tcpdump.

Why is there no record of port 1990 in the tcpdump?

A. The LTM device drops the connection.

B. Port 1990 is a well-known port, so its use is restricted.

C. The LTM device performs a Port Address Translation (PAT).

D. The LTM device performs a Network Address Translation (NAT).