For a single home user who regularly surfs the Web, exchanges e-mail, and uses instant messaging, a firewall's primary job is to keep viruses from infecting files and prevent Trojan horses from entering the system through hidden openings called ____________________.
Fill in the blank(s) with the appropriate word(s).
back doors
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Overload the average method of Exercise 5.22 to accept four integer parameters and return their average.
What will be an ideal response?
?Case 4-1 Michael, the owner of a new retail store, sets up a business network to communicate with fellow retailers and to attract customers. Michael wishes to connect all the computers in his office in such a way that if one device in the connection fails,the network can still function, assuming an alternate path is available. He also wants to ensure that data can take any of several possible paths from source to destination. Which of the following topologies should Michael use to connect the devices?
A. ?Star topology B. ?Bus topology C. ?Ring topology D. ?Mesh topology
A(n) ____ exists when there are different elements to monitor, such as individual processes when you use the Process object, or when a process contains multiple threads or runs subprocesses under it for the Thread object.
A. counter B. session C. reference D. instance
You can calculate the number of cells in a range that match criteria you specify using the SUMIF function. _________________________
Answer the following statement true (T) or false (F)