In-syllabus doubts solved gradually

Troubleshooting Application Centric Infrastructure and Troubleshooting Data Center Compute Platforms topics made me think of quitting the exam altogether not once but many times. But thanks to the 300-180 DCIT mock tests, the doubts in these tough topics were cleared. I used to give mock tests and tried to understand the concepts based on the Troubleshooting Cisco Data Center Infrastructure (DCIT) attempted answers. Very very helpful it is.