Exam 1Y0-341 topic 1 question 80 discussion

If you do not regularly review and either approve or ignore learned rules and this limit is reached, an error is logged to the NetScaler log and no more learned rules are generated until you review the existing learned rules and relaxations. https://docs.netscaler.com/en-us/citrix-adc/current-release/application-firewall/profiles/learning.html

D. The Citrix Web App Firewall Learn database has reached its capacity of 20 MB. The learning feature of the Citrix Web App Firewall stops learning new rules once the learn database reaches its size limit, which is approximately 20 MB. This limit corresponds to around 2,000 learned rules or relaxations. To resume learning, the engineer would need to review the existing learned rules and either approve or ignore them to free up space in the learn database.