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F5 303 Exam With Confidence Using Practice Dumps

Exam Code:
303
Exam Name:
BIG-IP ASM Specialist
Certification:
Vendor:
Questions:
520
Last Updated:
May 6, 2026
Exam Status:
Stable
F5 303

303: BIG-IP ASM Exam 2025 Study Guide Pdf and Test Engine

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BIG-IP ASM Specialist Questions and Answers

Question 1

An LTM device has a virtual server configured as a Performance Layer 4 virtual listening on 0.0.0.0:0 to perform routing of packets to an upstream router. The client machine at IP address 192.168.0.4 is attempting to contact a host upstream of the LTM device on IP address 10.0.0.99.

The network flow is asymmetrical, and the following TCP capture displays:

# tcpdump -nnni 0.0 'host 192.168.0.4 and host 10.0.0.99'

tcpdump: verbose output suppressed, use -v or -vv for full protocol decode

listening on 0.0, link-type EN10MB (Ethernet), capture size 96 bytes

05:07:55.499954 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack 3267995082 win 1480

05:07:55.499983 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0

05:07:56.499960 IP 192.168.0.4.35345 > 10.0.0.99.443: S 3205656213:3205656213(0) ack 3267995082 win 1480

05:07:56.499990 IP 10.0.0.99.443 > 192.168.0.4.35345: R 1:1(0) ack 1 win 0

4 packets captured

Which option within the fastL4 profile needs to be enabled by the LTM Specialist to prevent the LTM device from rejecting the flow?

Options:

A.

Loose Close

B.

Loose Initiation

C.

Reset on Timeout

D.

Generate Initial Sequence Number

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Question 2

-- Exhibit –

-- Exhibit --

Refer to the exhibit.

An LTM Specialist configures a virtual server that balances HTTP connections to a pool of three application servers. Approximately one out of every three connections to the virtual server fails.

Which two actions will resolve the problem? (Choose two.)

Options:

A.

Assign a custom HTTP monitor to the pool.

B.

Enable SNAT automap on the virtual server.

C.

Verify that port lockdown is set to allow port 80.

D.

Verify the default gateway on the application servers.

E.

Increase the TCP timeout value in the default TCP profile.

Question 3

An application is configured so that the same pool member must be used for an entire session, as well as for HTTP and FTP traffic.

A user reports that a session has terminated, and the user must restart the session. The BIG-IP Administrator determines that the active BIG-IP device failed over to the standby BIG-IP device. Which configuration settings should the BIG-IP Administrator verify to ensure proper behaviour when BIG-IP failover occurs?

Options:

A.

cookie persistence and session timeout

B.

Stateful failover and Network Failover detection

C.

Persistence mirroring and Match Across Services

D.

syn-cookie insertion threshold and connection low-water mark