What is the difference between Flexible and Scheduling custom
intervals?
- Correct Answer - Flexible custom interval you define an interval and a
period (lowest value takes precedence), Scheduling is where you define
a specific time(s) that you want the check to happen (on the minute, on
the hour etc).
How are transformations in pre-processing handled i.e. in what order?
- Correct Answer - In the order they are defined.
What happens if a preprocessing step fails?
- Correct Answer - All preprocessing stops for that item.
What are the three options for 'custom on fail' scenarios in
preprocessing?
- Correct 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).
What happens to data that does not have any preprocessing steps
defined?
- Correct Answer - It is still passed into preprocessing manager and
placed into the preprocessing queue.
, What is the difference between numeric (unsigned) and numeric (float)?
- Correct Answer - Unsigned; whole numbers (rounds down), float;
decimal numbers.
What type of regular expression does Zabbix support for preprocessing?
- Correct Answer - PCRE (Perl Compatible Regular Expression)
When using regular expression, how many captured groups can be
used?
- Correct Answer - 10
What two fields must be specified when setting up preprocessing on the
frontend?
- Correct Answer - Pattern - regular expression & Output - capturing
group
What is the purpose of discard unchanged?
- Correct Answer - To limit unnecessary data from being added to the
database. Typically data that does not change over time.
What is the step that is always executed as the first preprocessing step?
- Correct Answer - Check if there was an error in collecting item value
What are the three main ways in which Items can become unsupported?
- Correct Answer - On data collection time, In preprocessing steps, Or
when writing into database
What are the three ways in which Items may become unsupported on
data collection time? And how can you fix them?
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