Checking if the remote host is alive TCP / UDP Port scanning Firewall detection OS Detection admin See author's posts Post navigation You are introducing a lesson to a group of students. After presenting the objectives of the lesson, you tell a three minute story. You look around the classroom and the students seem perplexed and confused.Which one of the following is the main reason for the students’ reaction in the above scenario? An instructor is teaching an e-Commerce Infrastructure course and during the lengthy final exercise, it is discovered that one of the student’s computers has a faulty component needed to complete the exercise. A replacement component is not available. What action should the instructor take to allow the student to continue the exercise?