1. You are the network manager for a computer training center that allows students to bring their own laptops to class for learning and taking notes. Students need access to the Internet, so you have configured your network’s DHCP server to issue IP addresses automatically. Which DHCP option should you modify to make sure you are not wasting addresses used by students who have left for the day?

The lease duration for student computers .

Explanation:

The computer training center network manager which give permission to students to get his separate laptop to both the training and note-taking classes. Students require an internet connection because they have installed the DHCP server in their network to instantly give IP's.  

So, The length of the lease for student computers which should be changed to ensure that they do not waste addresses used by learners who left for that day.

answer is:

a). backstage view

explanation:

backstage view is the area where files and data about them is managed— creating, saving, printing, sending to others, inspecting for hidden metadata or personal information, and setting options. so in this way we can add many things to our document swiftly.

i hope you get the idea.