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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?
Path Layer The path layer maps services such as DS3, FDDI, and ATM into the SONET payload formal. This layer provides end to end communications signals labelling path m
Transmission Control Protocol - TCP is a connection oriented transport layer protocol with built unreliability. It considers a large block of data and breaks it down into segments
Q. Factors effects the quality of image of monitor? Four factors effects the quality of image of monitor: 1. Phosphor coating: This affects the colour and persistence (Th
Question: (a) Explain and illustrate different architectures for IEEE802.11 (WiFi). (b) The MAC management of IEEE802.11 handles transmitter activity for power management.
What is Wireless Application Protocol?
Source to Destination Data Transfer - Datagram approach - Each packet is treated independently. - Every pkt will take its own path to reach the destination. - There i
PVM (Parallel Virtual Machine) is a portable message-passing programming system, designed to link divide heterogeneous host machines to form a "virtual machine" which is a one, man
What is WAN? A wide area network is defines a LAN of LANs. WANs connect LANs that might be on opposite sides of a building, across the country or around the world. WANS
What is the method of HA and FA in VPN tunneling?
The diagram below offers an overall view on the methods use by both the OSI and TCP/IP model. ISO Approach - Occasionally called Horizontal Approach - OSI asse
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