F5CAB3 Exam Info and Free Practice Test Professional Quiz Study Materials [Q38-Q53]

30 Oct, 2026 By admin F5CAB3, F5 0 Comments

F5CAB3 Exam Info and Free Practice Test Professional Quiz Study Materials [Q38-Q53]

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F5CAB3 Exam Info and Free Practice Test Professional Quiz Study Materials

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F5 F5CAB3 Exam Syllabus Topics:

Section	Objectives
High Availability and Troubleshooting	– Diagnostics and Troubleshooting Tools 1. Logging and traffic analysis tools 2. Common failure scenarios and resolution methods – Device Service Clustering (DSC) 1. State synchronization mechanisms 2. Failover concepts and device groups
Advanced Traffic Control	– Monitoring and Health Checks 1. Service health evaluation 2. Active and passive monitors – iRules and Traffic Steering 1. Event-based traffic manipulation 2. Basic iRule syntax and logic
Traffic Management and Load Balancing	– Virtual Servers and Pools 1. Virtual server types and configuration 2. Pool member selection and availability – Load Balancing Methods 1. Round robin, least connections, ratio-based methods 2. Persistence and session handling
F5 BIG-IP System Fundamentals	– Architecture Overview of BIG-IP Platform 1. TMM (Traffic Management Microkernel) basics 2. Traffic management concepts (data plane vs control plane) – Initial Configuration and System Components 1. System setup and licensing concepts 2. Management and self IP architecture
Traffic Processing and Policies	– Address Translation 1. SNAT and NAT concepts 2. Traffic flow translation behavior – Profiles and Protocol Handling 1. HTTP, TCP, SSL profiles configuration 2. Connection handling and optimization

NO.38 Which persistence profile would be the most appropriate to ensure an HTTP web request connects to the same pool member? (Choose one answer)

Destination address

Hash persistence

SSL persistence

Cookie persistence

NO.39 An LTM device has a virtual server mapped to www.f5.com with a pool assigned. The objects are defined as follows: Virtual server: Destination 192.168.245.100:443 netmask 255.255.255.0. Persistence: Source address persistence netmask 255.0.0.0. SNAT: Automap. Profiles: HTTP/TCP. How should the BIG-IP Administrator modify the persistence profile so that each unique IP address creates a persistence record?

netmask 255.255.255.0

netmask 0.0.0.0

netmask 255.255.0.0

netmask 255.255.255.255

NO.40 A BIG-IP Administrator creates a new VLAN on BIG-IP Cluster Member A and attaches an interface to it.
Although the Auto Config Sync is in place, the new VLAN does NOT show up on Cluster Member B. What should the BIG-IP Administrator do to ensure the new VLAN is configured on each Cluster Member?

Configure a Default Route for the new VLAN on Cluster Member A

Enable the Interface that is attached to the new VLAN on Cluster Member A

Configure the new VLAN manually on Cluster Member B

Reset the Device Trust of the BIG-IP Cluster on either Cluster Member

NO.41 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)

Protocol profile (Client) to DNS_OPTIMIZED

Type to Performance (HTTP)

Source Address to 192.168.10.0/24

Protocol to UDP

NO.42 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?

Configure SSL Profile (Client)

Configure Protocol Profile (Server)

Configure SSL Profile (Server)

Configure Service Port to HTTP

NO.43 The BIG-IP Administrator has configured an HTTP health monitor applied to a Pool of HTTP web servers hosting www.f5.com, but all Pool Members show a DOWN status. The web server is returning a response of ‘
400 Bad Request ‘ . What would be the correct monitor Send string?

GET /healthmonitor.html HTTP/1.1 rnConnection: Closern

GET /healthmonitor.html HTTP/1.1 Connection: Close

GET /healthmonitor.html HTTP/1.1 rnHost: www.f5.comrnConnection: Closernrn

GET /healthmonitor.html HTTP/1.1rnConnection: Closernrn

NO.44 Where in the configuration utility should the BIG-IP Administrator verify the pool member currently assigned to a pool is on port 80?

Local Traffic > Nodes: Node List. Select the node in question, view the Health Monitor next to Configuration.

Local Traffic > Pools: Pool List. Select the pool in question, select Members tab, view the configured Health Monitor.

Local Traffic > Pools: Pool List. Select the pool in question, select the Members tab, view the configured Service Port.

NO.45 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)

Protocol profile (Client) to DNS_OPTIMIZED

Type to Performance (HTTP)

Source Address to 192.168.10.0/24

Protocol to UDP

NO.46 A BIG-IP Administrator adds new pool members into a highly utilized pool. Users report application failures.
Which pool-level setting should be checked?

Availability Requirement

Allow SNAT

Action On Service Down

Slow Ramp Time

NO.47 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)

Client SSL, Client Name

Server SSL, Server Name

Client SSL, Server Name

Server SSL, Client Name

NO.48 An organization is reporting slow performance accessing their Intranet website. All employees use a single Proxy Server with a public IP.
What should the BIG-IP Administrator do to fix this issue?

Change Source Address to proxy IP

Change Load Balancing Method to Least Connections

Change Fallback Persistence Profile to source_addr

Change Default Persistence Profile to cookie

NO.49 A set of servers is used for an FTP application as well as an HTTP website via separate BIG-IP Pools. The server support team reports that some servers are receiving a lot more traffic than others. Which Load Balancing Method should the BIG-IP Administrator apply to even out the connection count?

Ratio (Node)

Least Connections (Member)

Ratio (Member)

Least Connections (Node)

NO.50 Users are unable to reach an application. The Virtual Server shows a red diamond status in the Configuration Utility.
What is the cause?

All pool members are down

HTTPS traffic sent to HTTP Virtual Server

Virtual Server is disabled

All pool members are disabled

NO.51 Users are unable to reach an application. The Virtual Server shows a red diamond status.
What is the cause?

All pool members are down

HTTPS traffic sent to HTTP VS

Virtual Server disabled

Pool members disabled

NO.52 The BIG-IP Administrator is investigating whether better TCP performance is possible for a virtual server.
Which built-in profile should be tried first? (Choose one answer)

f5-tcp-legacy

f5-tcp-progressive

f5-tcp-mobile

No option

NO.53 A virtual server is configured to offload SSL from a pool of backend servers. When users connect to the virtual server, they successfully establish an SSL connection but no content is displayed. A packet trace performed on the server shows that the server receives and responds to the request. What should a BIG-IP Administrator do to resolve the problem?

enable Server SSL profile

enable SNAT

disable Server SSL profile

disable SNAT