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Question 186 - SPLK-1002 discussion

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Which of the following eval commands will provide a new value for host from src if it exists?

A.
| eval host = if (isnu11 (src), src, host)
Answers
A.
| eval host = if (isnu11 (src), src, host)
B.
| eval host = if (NOT src = host, src, host)
Answers
B.
| eval host = if (NOT src = host, src, host)
C.
| eval host = if (src = host, src, host)
Answers
C.
| eval host = if (src = host, src, host)
D.
| eval host = if (isnotnull (src), src, host)
Answers
D.
| eval host = if (isnotnull (src), src, host)
Suggested answer: D

Explanation:

Theevalcommand is a Splunk command that allows you to create or modify fields using expressions .

Theiffunction is an expression that evaluates a condition and returns a value based on whether the condition is true or false. The syntax of theiffunction isif(X,Y,Z), where X is the condition, Y is the value to return if X is true, and Z is the value to return if X is false.

Theisnotnullfunction is an expression that returns true if the argument is not null, and false otherwise. The syntax of theisnotnullfunction isisnotnull(X), where X is the argument to check.

Therefore, the expressionif (isnotnull (src), src, host)returns the value ofsrcif it is not null, and the value ofhostotherwise. This means that it will provide a new value forhostfromsrcif it exists, and keep the original value ofhostotherwise.

asked 23/09/2024
Donald Wu
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