CMIT425 Week 3

After reading this week's materials, please respond to one or more of the following questions. 1.Identify the malicious threat sources to physical security and their corresponding countermeasures. 2.What is a "man-trap"? What is the difference between "fail-safe" and "fail-secure" configurations in how doorways with automatic locks operate? 3.Define the following different types of voltage fluctuations possible with electric power: spike, surge, fault, blackout, sag/dip, brownout, and in-rush current. Describe electromagnetic interference (EMI) and radio frequency interference (RFI) and discuss sources of each. 4.Describe the four main classes of fire in relation to the type of fire, elements of fire they are associated with, and the suppression method used to mitigate them. List the four main combustion elements and align them with the appropriate suppression method. 5.Describe the differences between the four main types of water sprinkler systems used for fire suppression.