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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?
Name various types of guided and unguided transmission media. If you are connecting your office computers through a local area network which transmission media would you use? Why?
It imposes hierarchy and a division of labor between processors. Only one designated processor, the master, controls (in a tightly coupled arrangement) slave processors dedicated t
Discuss an example of threats in computer software Assume only one attack out of the above list i.e., the virus attack. Though the present anti-virus software solutions can det
State the benefits of Infrared light Infrared light does not penetrate walls or other opaque objects. This has two benefits: First, infrared communications can be more simply
I have a larget text file of 1MB, how do i break down into chunks of packets to send over UDP? byte b[]=new byte[1024]; FileInputStream f=new FileInputStream("input.txt
hii i want to make a assignment from you. please help me.
Q. Data Link Layer Responsibilities? - Defines frames into manageable data units - Physical addressing - Flow control - Error control - Access control Nod
Can you define the concept of VLSM?
UDP sends packets 'blind' down the network, and relies on upper-layer protocols to form connections and identify errors. TCP is a connection-oriented protocol that can give reliabl
What are the key benefits of layered network? Main advantages of layered network are given below: a) Complex systems can be split into understandable subsystems. b) Any f
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