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a. If a password to a cipher is exactly 8 characters long, and each character can be selected from [0-9], [a-z], and [A-Z], how many different passwords are possible?
b. Suppose a system requires passwords be 8 characters long, include at least one capital letter, at least one digit and at least one character from the set of 5 special characters { !,#,%,&,*} . What advantage does this provide an attacker who is trying to guess a password?
There is a many-to-one relationship among clients and server. Clients always start the dialog by requesting a service. Servers are passively awaiting for requests from clients.
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hi. this is 700 words assignment..how much charges will be for this..?
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