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BIG-IP Administration Support and Troubleshooting (F5CAB5) exam Question and Answers

BIG-IP Administration Support and Troubleshooting (F5CAB5) exam

Last Update Feb 16, 2026
Total Questions : 63

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Questions 1

Refer to Exhibit:

An organization is reporting slow performance accessing their Intranet website, hosted in a public cloud. All employees use a single Proxy Server with the public IP of 104.219.110.168 to connect to the Internet. What should the BIG-IP Administrator of the Intranet website do to fix this issue?

Options:

A.  

Change Source Address to 104.219.110.168/32

B.  

Change Load Balancing Method to Least Connection

C.  

Change Fallback Persistence Profile to source_addr

D.  

Change Default Persistence Profile to cookie

Discussion 0
Questions 2

Which two methods should the BIG-IP Administrator troubleshoot a Pool-member that's been marked "DOWN" by its Health Monitor? (Pick the 2 correct responses below)

Options:

A.  

Enable Monitor Logging for the Pool-member that's "DOWN".

B.  

Review the BIG-IP's routing table using "netstat -rn" to show all routes.

C.  

Collect a TCPdump packet capture for the "DOWN" Pool-member.

D.  

Review the Pool & Pool-member Statistics table for error data.

Discussion 0
Questions 3

A BIG-IP Administrator receives reports from users that SSL connections to the BIG-IP device are failing. Upon checking the log files, the administrator notices: SSL transaction (TPS) rate limit reached. stats show a maximum of 1200 client-side SSL TPS and 800 server-side SSL TPS. What is the minimum SSL license limit required to handle this peak?

Options:

A.  

2000

B.  

400

C.  

800

D.  

1200

Discussion 0
Questions 4

During a high-demand traffic event, the BIG-IP Administrator needs to limit the number of new connections per second allowed to a Virtual Server. What should the administrator apply to accomplish this task?

Options:

A.  

A OneConnect profile to the Virtual Server

B.  

An HTTP Compression profile to the Virtual Server

C.  

A connection limit to the Virtual Server

D.  

A connection rate limit to the Virtual Server

Discussion 0
Questions 5

A BIG-IP Administrator makes a configuration change to the BIG-IP device. Which file logs the message regarding the configuration change?

Options:

A.  

/var/log/messages

B.  

/var/log/secure

C.  

/var/log/audit

D.  

/var/log/user.log

Discussion 0
Questions 6

In the BIG-IP Configuration Utility, a user requests a single screen view to determine the status of all Virtual Servers and associated pool members, as well as any iRules in use. Where should the BIG-IP Administrator instruct the user to find this view?32

Options:

A.  

Local Traffic > Monitors

B.  

Local Traffic > Virtual Servers

C.  

Local Traffic > Network Map

D.  

Statistics

Discussion 0
Questions 7

A BIG-IP Administrator disabled a virtual server with a pool that has a working health monitor. How does the status icon look for this virtual server?

Options:

A.  

Black circle

B.  

Red square

C.  

Black square

D.  

Red circle

Discussion 0
Questions 8

Which menu should you use on the BIG-IP Configuration Utility to generate a QKView support file? (Choose one answer)

Options:

A.  

System > Configuration

B.  

System > Archive

C.  

System > Support

D.  

System > Logs

Discussion 0
Questions 9

A BIG-IP Administrator observes the following pool member status message:

Pool /Common/testpool member /Common/10.120.0.5:8090 monitor status down

[/Common/http: up, /Common/http2: down; last error:]

Why is this pool member being marked down? (Choose one answer)

Options:

A.  

The pool member is currently only serving HTTP traffic.

B.  

The pool member is currently only serving TCP traffic.

C.  

The pool member is currently only serving UDP traffic.

D.  

The pool member is currently only serving HTTPS traffic.

Discussion 0
Questions 10

A BIG-IP Administrator is receiving intermittent reports from users that SSL connections to the BIG-IP device are failing. Upon checking the log files, the administrator notices: SSL transaction (TPS) rate limit reached. Reviewing stats shows a max of 1200 client-side SSL TPS and 800 server-side SSL TPS. What is the minimum SSL license limit capacity required to handle this peak?

Options:

A.  

2000

B.  

400

C.  

800

D.  

1200

Discussion 0
Questions 11

Some users who connect to a busy Virtual Server have connections reset by the BIG-IP system. Pool member resources are NOT a factor in this behavior. What is a possible cause for this behavior?

Options:

A.  

The Connection Rate Limit is set too high

B.  

The server SSL Profile has NOT been reconfigured.

C.  

The Connection Limit is set too low.

D.  

The Rewrite Profile has NOT been configured.

Discussion 0
Questions 12

A custom HTTP monitor is failing to a pool member 10.10.3.75:8080 that serves up www.example.com . A ping works to the pool member address. The SEND string is: GET / HTTP/1.1 \r\nHost: www.example.com\r\nConnection: Close\r\n\r\n. Which CLI tool syntax will show whether the web server returns the correct HTTP response?

Options:

A.  

curl --header 'Host: www.example.com ' 'http://10.10.3.75:8080/ '

B.  

tracepath http://www.example.com:80

C.  

tracepath 10.10.3.75 8080 GET /index

D.  

curl http://10.10.3.75:8080/www.example.com/index.html

Discussion 0
Questions 13

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?

Options:

A.  

Ratio (Member)

B.  

Least Connections (Member)

C.  

Least Connections (Node)

D.  

Ratio (Node)

Discussion 0
Questions 14

Plaintext

warning tmm[]: 011e0002:4: sweeper_segment_cb_any: Aggressive mode /Common/default-eviction-policy activated (0) (global memory). (345209/690176 pages)

warning tmm[]: 011e0003:4: Aggressive mode sweeper: /Common/default-eviction-policy (0) (global memory) 1 Connections killed

What is happening when the BIG-IP Administrator sees the messages in the LTM log displayed above? (Pick the 2 correct responses below)

Options:

A.  

The BIG-IP system starts reaping connections, some connections will be dropped

B.  

The BIG-IP system starts reaping connections, all the connections will be dropped

C.  

The global eviction policy is triggered due to TMM memory exhaustion

D.  

The global eviction policy is triggered due to swap memory being used too high

Discussion 0
Questions 15

A BIG-IP Administrator is informed that traffic on Interface 1.1 is expected to increase over the maximum bandwidth capacity on the link. There is a single VLAN on the Interface. What should the BIG-IP Administrator do to increase the total available bandwidth?

Options:

A.  

Assign two Interfaces to the VLAN

B.  

Set the media speed of Interface 1.1 manually

C.  

Create a trunk object with two Interfaces

D.  

Increase the MTU on the VLAN using Interface 1.1

Discussion 0
Questions 16

Refer to the exhibit.

A BIG-IP Administrator needs to deploy an application on the BIG-IP system to performSSL offload and re-encrypt the traffic to pool members. During testing, users are unable to connect to the application.

What must the BIG-IP Administrator do to resolve the issue? (Choose one answer)

Options:

A.  

Remove the configured SSL Profile (Client)

B.  

Configure Protocol Profile (Server) as splitsession-default-tcp

C.  

Enable Forward Proxy in the SSL Profile (Client)

D.  

Configure an SSL Profile (Server)

Discussion 0
Questions 17

Where should the BIG-IP Administrator go in the GUI to verify the status of pool members of a pool?

Options:

A.  

Local Traffic —> Pools —> —> Members

B.  

Local Traffic —> Pools

C.  

Local Traffic —> Virtual Servers —> Statistics

D.  

Local Traffic —> Nodes

Discussion 0
Questions 18

The BIG-IP is experiencing issues with data plane resources. Which traffic processing would be most impacted?

Options:

A.  

MCPD transactions

B.  

Configuration utility

C.  

APM sessions

D.  

iControl transactions

Discussion 0