Zabbix Certified Specialist Day 2 Questions and Answers Updated 2026/2027 Version | Verified Answers

Zabbix Certified Specialist Day 2 Questions and Answers Updated 2026/2027 Version | Verified Answers 1. What happens if a preprocessing step fails? - ANSWER All preprocessing stops for that item. 2. What are the three options for 'custom on fail' scenarios in preprocessing? - ANSWER Discard value (& no more steps are processed), Set value to (value will be changed to defined value), Set error to (item will become not supported with custom error). 3. What happens to data that does not have any preprocessing steps defined? - ANSWER It is still passed into preprocessing manager and placed into the preprocessing queue. 4. What is the difference between numeric (unsigned) and numeric (float)? - ANSWER Unsigned; whole numbers (rounds down), float; decimal numbers. 5. What type of regular expression does Zabbix support for preprocessing? - ANSWER PCRE (Perl Compatible Regular Expression) 6. When using regular expression, how many captured groups can be used? - ANSWER 10 7. What two fields must be specified when setting up preprocessing on the frontend? - ANSWER Pattern - regular expression & Output - capturing group 8. What is the purpose of discard unchanged? - ANSWER To limit unnecessary data from being added to the database. Typically data that does not change over time. 9. What is the step that is always executed as the first preprocessing step? - ANSWER Check if there was an error in collecting item value 10. What are the three main ways in which Items can become unsupported? - ANSWER On data collection time, In preprocessing steps, Or when writing into database 11. What are the three ways in which Items may become unsupported on data collection time? And how can you fix them? - ANSWER Wrong item key or parameters, Timeout/communication error, Wrong credentials/incorrect permissions. Can be fixed by 'check for not supported value' preprocessing step 12. When will not supported Items be checked? - ANSWER Every item update interval 13. What Zabbix server command is used to reload the configuration cache? - ANSWER zabbix-server -R config_cache_reload 14. When running a passive item test, is any of this data stored? - ANSWER No 15. What are the two options for testing an Item? - ANSWER Manual test or get value from the host 16. What is the order of the values in the Trigger expression? And what is the syntax for this? - ANSWER function(/host/key,additional parameters)operatorconstant 17. In which two locations can triggers be created? - ANSWER Host, Template 18. Which two fields are mandatory when creating triggers? - ANSWER Trigger name, Trigger expression 19. What tool can you use to create dynamic problem names for Triggers? - ANSWER Macros 20. Regarding event names, the same set of macros is supported as in the trigger name plus which macros? - ANSWER {TIME} & {?EXPRESSION} 21. What is the syntax for an expression macro? - ANSWER {?expression} 22. Are user macros supported inside expression macros? - ANSWER No 23. What macros can leverage the fmtnum function and what is this functions purpose? - ANSWER {ITEM.VALUE}, {ITEM.LASTVALUE} and this defines the number of digits after a decimal point 24. What is the point of Operational data when looking at the problems page? - ANSWER To display real time data that is not present in the problem message 25. What are the three options for displaying Operational data? - ANSWER None, Separately (separate column), With problem name (separated by parentheses) 26. What are the six severities can be assigned to a trigger? - ANSWER Not classified, Info, Warning, Average, High, Disaster 27. Can you change the colour of severities? If so, where can this be done? - ANSWER Yes under Administration General Trigger displaying options 28. What are three ways to resolve a problem? - ANSWER Trigger expression only (FALSE), Specifying additional recovery expression (Trigger FALSE & Recovery TRUE), Manually closing the problem 29. Can you close a problem manually without it being allowed in the trigger configuration? If so, how do you do this? - ANSWER No, you cannot. 30. True or False. Recovery expression will stop the problem from triggering again if true. - ANSWER False. If the trigger is TRUE and recovery expression is also TRUE, the problem will remain open.