Varun's response is not relevant to the question asked. The interviewer requested a detailed explanation of the troubleshooting process for a data ingestion issue in a deployed data pipeline. Varun's one-word response does not provide any information on his troubleshooting methodology or his ability to articulate a verbal explanation of his approach. Varun should provide a step-by-step account of how he would identify and resolve the issue, including the tools and techniques he would use, and how he would collaborate with other teams if necessary.