You need to set up a local network to support Windows Vista, Windows 8.1, and OS X computers that will share printers and folders with each other. Which type of network do you need to configure?
a. Homegroup
b. Dial-up
c. VPN
d. Workgroup
D. A workgroup network supports connections between Windows and non-Windows computers. A homegroup only supports Windows 7 and newer versions. A dial-up or VPN connection enables a single computer to connect to remote computers.
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Name any five Oracle objects.
What will be an ideal response?
Create an interface MessageDecoder that has a single abstract method decode( cipherText), where cipherText is the message to be decoded. The method will return the decoded message. Modify the classes SubstitutionCipher and ShuffleCipher, as described in Exercises 16 and 17, so that they implement MessageDecoder as well as the interface MessageEncoder that Exercise 15 describes. Finally, write a program that allows a user to encode and decode messages entered on the keyboard.
This project demonstrates creating multiple concrete classes that implement two related interfaces. The most difficult part of this implementation is handling characters in the substitution cipher.