Exam SPLK-1002 topic 1 question 172 discussion

D is correct: Explanation: A. | eval host * if(isnull(src), src, host): This is incorrect syntax. The * operator is not appropriate for updating the host field based on the condition. B. | eval host = if(src = host, src, host): This would leave host unchanged if src is equal to host. It does not provide a new value from src. C. | eval host = if(NOT src = host, src, host): This would replace host with src only if src is not equal to host, but not specifically provide a new value from src if it exists. D. | eval host = if(isnotnull(src), src, host): This is correct. It sets host to the value of src if src is not null; otherwise, it keeps the original value of host. Therefore, the correct answer is D. | eval host = if(isnotnull(src), src, host).