How should an administrator test the functionality of DNS operation on a domain controller, as well as troubleshoot issues with DNS forwarders, delegation, dynamic updates, and record registration?

Which of the following is NOT a possible source of surges?

A) Downed power lines B) Startup of air conditioners C) Light switches D) Lightning strikes

A difference between textboxes and labels is:

a) textboxes have a drop-down feature b) labels cannot be changed during runtime c) textboxes allow the user to enter information into them d) nothing