Northrop Grumman Software Engineer interview questions

Went to an on-site interview and prepped based on other GD reviews, brushed up on my technical terms and made sure I knew my resume in and out. However, the interview was mainly leetcode/whiteboarding (80-90%). I was completely blindsided.

it was great but i am tensed a bit and answered in tension and cant able to cope up with their expectations at that time but as asa saskf as asdas