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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?
Q. What is Manchester? - Utilizes an inversion at the middle of each bit interval for both synchronization and bit representation - Negative-to-positive represents binary 1
The performance of interconnection networks is measured on the below parameters. 1) Bandwidth: It determines maximum transfer rate between any two nodes. It is measured in MB
Q. Explain about Bandwidth – delay product? Bandwidth - delay product - A measure of competence of ARQ system = bandwidth (bits per second) * round-trip delay (in seco
Explain L2F protocol?
What are the benefits of Intranet applications The benefits of successful Intranet applications can be enumerated as follows: Cheaper: Use of client browsers with one
define protocol
What is a Database Server? With a database server, the client passes SQL requests as messages to the database server. The results of every SQL command are returned over the net
QUESTION (a) In CSS, each element in a document is considered to be in an invisible box. Give three ways how to make the box visible (b) (i) Explain the meaning and use of t
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Describe at one disadvantage of a peer to peer network. When you are accessing the resources that are shared by one of the workstations on the network, that workstation takes
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