Explain how SMTP works Explain how DNS works Explain DNS security Give a brief overview of your work history Give a technical challenge you faced and how you overcame it, How do you identify that and email is spoofed Are emails easy to be spoofed How do you apply email filters in O365 Behavioral question: If you had to troubleshoot an issue for you CEO while at the same time a small company is asking for assistance with a product line and is frustrated and state they will withdraw their contract if help is not received immediately and a large organization asked you for information on product lines, which would you help first. Your CEO states, her emails are not being delivered, how do you troubleshoot the issue.