[Sep 07, 2025] Get to the Top with 5V0-43.21 Practice Exam Questions
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NEW QUESTION # 17
Which statement is correct regarding HTTP Policies?
- A. They can send a Local Response.
- B. They can rewrite server response payload.
- C. They are incompatible with SSL.
- D. A VS may only contain one Request or Response Policy at a time.
Answer: A
NEW QUESTION # 18
Which configuration option requires enabling Switch to Advanced in the Service Port section of the Virtual Service Advanced Setup wizard?
- A. Disable port translation
- B. Enable service port ranges
- C. Enable multiple service ports
- D. Enable SSL termination
Answer: B
NEW QUESTION # 19
Which item is NOT a valid TCP/UDP Profile Type?
- A. TCP Fast Path
- B. System-L4-Application
- C. UDP Proxy
- D. UDP Fast Path
Answer: B
NEW QUESTION # 20
In Avi, what is the performance difference between RSA and EC certificates?
- A. EC provides less performance than RS
- B. EC provides equivalent performance to RSA.
- C. Avi does not support EC certificates.
- D. EC provides greater performance than RSA.
Answer: D
NEW QUESTION # 21
An administrator needs to determine the rate of 5xx errors being returned by the Pool servers.
Which metrics graph in the Virtual Service Analytics tab can be used to complete this task?
- A. End to End Timing
- B. Requests
- C. Conns
- D. Client Insights
Answer: D
NEW QUESTION # 22
An operator created a Virtual Service and wants to enable non-significant logs for only that specific Virtual Service.
Which action, if any, will meet this goal?
- A. Create a dedicated Application Profile, and assign it to the Virtual Service.
- B. The CLI must be used to create a Virtual Service with non-significant logs enabled.
- C. Enable non-significant logs in the Analytics tab of the Virtual Service.
- D. This goal cannot be met because non-significant logs are defined globally.
Answer: C
NEW QUESTION # 23
Which element of the End-to-End Timing graph identifies the average time taken for a web server to process a request, fetch content from a database, and generate the content?
- A. Data Transfer
- B. Total Time
- C. Server RTT
- D. App Response
Answer: D
NEW QUESTION # 24
An application owner wants to ensure that traffic is only sent to a web server in the pool when its connection to a back-end database is fully functional.
Which approach will ensure this goal?
- A. Configure an External Health Monitor that performs a database lookup to the back-end database.
- B. Create a Virtual Service with the back-end database server as pool member, and configure a TCP Health Monitor. Then, reconfigure the web servers to communicate with the database via this Virtual Service.
- C. Configure an HTTP Health Monitor to query a URI that returns a specific response if and only if a back-end database call is successful.
- D. Create a DataScript that performs a database lookup to the back-end database.
Answer: B
NEW QUESTION # 25
The network operations team has found that the CPU utilization of their Service Engines has increased greatly since enabling Web Application Firewall (WAF), and this has been causing increased application latency.
Which two WAF features should be used to improve WAF performance for this application? (Choose two.)
- A. Increase the memory of the Service Engines
- B. Change the WAF policy to detection mode
- C. Write Positive Security Model rules
- D. Create allow list bypass rules
- E. Use a different Core Rule Set
Answer: C,E
NEW QUESTION # 26
An operator in investigating a problem that requires checking the HTTP cookies supplied by the client.
When the logs are viewed, the operator finds that the cookies are not being shown.
Which configuration option should be enabled to fix this problem?
- A. Log all headers
- B. Non-significant logs
- C. Real-time metrics
- D. DataScript logs
Answer: B
NEW QUESTION # 27
An administrator has defined these three SE Groups based on capacity: Small-Group, Medium-Group, and Large-Group. The operator is configuring a Virtual Service that needs to be placed on SE's in the Large-Group.
How should this goal be accomplished?
- A. Create the VS in Advanced Setup mode, and override the default SE Group in the Advanced section.
- B. Create the VS in Advanced Setup mode, and override the default SE Group in the Policy section.
- C. Create the VS in Basic Setup mode, and override the default SE Group.
- D. Create the VS in Basic Setup mode, and override the default SE Group in the Policy section.
Answer: A
NEW QUESTION # 28
Which three techniques can an operator use to scale data plane performance? (Choose three.)
- A. Vertical scaling of an individual SE's resources
- B. O OSPF-based horizontal scaling of SEs in an SE Group
- C. Increase the maximum number of Virtual Services in an SE Group.
- D. Native horizontal scaling of SES in an SE Group
- E. BGP-based horizontal scaling of SES in an SE Group
- F. Native horizontal scaling of an individual SE
Answer: C,D,E
NEW QUESTION # 29
An operator observes that the health score for a Virtual Service has reduced. When hovering over the health score popup, the operator sees a Security Penalty of -20 has been applied.
Which issue should be investigated as the most likely cause of this reduced score?
- A. The SSL certificate attached to the Virtual Service will expire within the next 30 days.
- B. The CPU utilization of the Service Engine on which the Virtual Service is placed is exceeding 80%.
- C. The Pool has been configured with an HTTP health monitor rather than an HTTPS health monitor.
- D. The WAF Policy has not been configured with Positive Security rules.
Answer: A
NEW QUESTION # 30
An administrator wants to increase the number of active Service Engines utilized by a Virtual Service for more performance.
Which action, if any, should be taken to meet this goal?
- A. Use the Scale Out button in the Virtual Service popup.
- B. Use the Scale Out button in the Service Engine Group configuration.
- C. Use the Migrate button in the Virtual Service popup.
- D. No action is necessary since the data plane is scaled automatically.
Answer: A
NEW QUESTION # 31
An operator was asked to enable real-time metrics for a Virtual Service.
Which action can be taken to enable these metrics?
- A. Enable real-time metrics on the Pool and Virtual Service
- B. Enable real-time metrics in the Service Engine Group
- C. Create a DataScript
- D. Create a new Analytics Profile with real-time metrics enabled
Answer: D
NEW QUESTION # 32
What is the default Minimum Scale per Virtual Service value in Active-Active HA, if one exists?
- A. A default value does not exist.
- B. 0
- C. 1
- D. 2
Answer: D
NEW QUESTION # 33
Which method must be used by an Operator to create a new Virtual Service for multiple ports and network protocols?
- A. Create the Virtual Service using Basic Mode.
- B. Create the Virtual Service using Advanced Mode.
- C. Create multiple Application Profiles for each required port.
- D. Create the Virtual Service via the Service Engine CLI.
Answer: B
NEW QUESTION # 34
An operator is troubleshooting reported performance problems for an HTTP Virtual Service and notices that the Server RTT in the End-to-End timing graph has recently increased significantly while Client RTT and App Response times have remained unchanged.
What can the operator deduce is the most likely explanation for the reported performance problems?
- A. One or more pool servers are experiencing very high CPU utilization.
- B. A networking issue has developed between the Service Engine and one or more pool servers.
- C. The Service Engine where the Virtual Service is placed has become overloaded.
- D. A database server used by the application is experiencing a performance issue.
Answer: A
NEW QUESTION # 35
A single Virtual Service is configured to listen on multiple TCP service ports with a single server pool. The administrator would like to use the simplest configuration to keep the VS port and pool server port the same.
Which strategy should be used to meet this goal?
- A. Build a Policy to map VS port to pool server port
- B. Disable Port Translation in the VS configuration
- C. Build a Data Script to map VS port to pool server port
- D. Disable Port Translation in the Pool configuration
Answer: C
NEW QUESTION # 36
An administrator has attached a WAF Policy to their Virtual Service and starts getting reports from users that they are receiving a "403 Forbidden" error when trying to reach their application.
Which configuration would likely cause this issue?
- A. The WAF Policy is in detection mode.
- B. The WAF Policy has learning mode disabled.
- C. The WAF Policy signatures are disabled.
- D. The WAF Policy is in enforcement mode.
Answer: B
NEW QUESTION # 37
In which three ways does Avi indicate impending certificate expiry? (Choose three.)
- A. System events for soon-to-expire certificates are generated 30 days, 7 days, and 1 day prior to expiration.
- B. Emails sent to administrators via Pulse are generated at 30 days, 7 days, and 1 day prior to expiration.
- C. Indicators on the certificates page will change from green to red as the expiration date gets closer.
- D. The health score is reduced as the expiration date gets closer.
- E. Avi inserts a banner with the certificate expiration date on web pages served by a Virtual Service 30 days prior to expiration.
- F. Avi inserts a cookie with the certificate expiration date.
Answer: A,B,C
NEW QUESTION # 38
All Pool resources are "Down" and not available, but the Virtual Service port is still responding.
The operator would like the VS port to not respond when there are no Pool resources available.
Which configuration will cause this response?
- A. Virtual Service -> Advanced -> "Remove listening port when VS is down"
- B. Pool -> Advanced -> "Remove listening port when VS is down"
- C. Pool -> Settings -> "Ignore reachability constraints for server pool"
- D. Virtual Service -> Settings -> "Ignore reachability constraints for server pool"
Answer: C
NEW QUESTION # 39
Which scripting language is used to build a DataScript?
- A. Node.js
- B. Lua
- C. o Python
- D. Tcl
Answer: B
NEW QUESTION # 40
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