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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?
Quality assurance through statistical methods is a key component in a manufacturing organization where TQM generally starts by sampling a random selection selection of th
Communication, Resource sharing and Media (When many host share their resources with every other OR when many devices connect with each other for resource sharing )
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Control Frames for Lost Tokens If station goes down ... token lost Predecessor listens for data frame or token Noticing none, retransmits token Sends whofoll
if the signal input to an amplifier is 0 dBm what is the power output in mW if the gain of the amplifier is 20 dB ?
what is protocol?
Take the maximum packet lifetime, T. It's stated that T must be big enough to make sure the packet and its ACK have vanished. Why do we have to have the ACK?
How Does a Firewall Protect Firewalls work by controlling the information that comes in and out of the network. By using the Application Proxy service, the flow of information
What is Piggy Backing? A process called piggybacking is used to get better the efficiency of the bidirectional protocols. When a frame is carrying data from A to B, it can also
Q. Show the Subnetting process? Subnetting (cont) Subnetting creates an intermediary level of hierarchy IP datagram routing then involves three steps: delivery t
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