CNT Books has expanded considerably since you got the network up and running three years ago. It now occupies an entire floor in the building, and its LAN has grown to include several servers and more than 60 workstations. CNT Books has recently purchased another book company and needs more space and computers. Expansion plans include leasing another floor four stories above the current offices in the same building and adding 35 workstations and at least one more server immediately, with additional equipment purchases expected. What type of network is called for—LAN, WAN, MAN, or internetwork? What additional devices might be needed to ensure efficient network communication?

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File account.java (see previous exercise) contains a definition for a simple bank account class with methods to withdraw, deposit, get the balance and account number, and return a string representation. note that the constructor for this class creates a random account number. save this class to your directory and study it to see how it works. then write the following additional code: 1. suppose the bank wants to keep track of how many accounts exist. a. declare a private static integer variable numaccounts to hold this value. like all instance and static variables, it will be initialized (to 0, since it’s an int) automatically. b. add code to the constructor to increment this variable every time an account is created. c. add a static method getnumaccounts that returns the total number of accounts. think about why this method should be static - its information is not related to any particular account. d. file testaccounts1.java contains a simple program that creates the specified number of bank accounts then uses the getnumaccounts method to find how many accounts were created. save it to your directory, then use it to test your modified account class.

In simple terms, how would you define a protocol?