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Problem:
(a) Use a simple example to explain what is meant by a finite state machine.
(b) Describe the time limit problem in an interrupt-driven system.
(c) A certain machine control has three push-button switches:
forward, stop and reverse. If the machine is moving forward it must be stopped before it can run in reverse. Likewise if it is running in reverse, it must be stopped before moving forward.
(i) Draw the state transition diagram
(ii) Draw a state table
(iii) Write the 8051 code to implement such a controller
(d) A system is planned to have four interrupts with the following specifications.
Calculate whether or not the system will be interrupt-bound.
A Certificate presents an organization in an official digital form. This is same to an electronic identity card which serves the purpose of Identifying the owner of the certificate
QUESTION (a) What do you understand by a VLAN? Provide one advantage of using a VLAN. (b) What is a trunk port in a VLAN? (c) A VLAN will be created using one or more
Convert (111011)2 to ( )10
PARITY BIT: A parity bit is an extra bit transmitted with data item select to give the resulting bit odd or even parity. For example an even parity data packet 10100001 has p
You see two IP addresses. The IP address 192.168.58.130 is the one of Bt4. The IP address 192.168.58.133 has ports 135 and 445 open; which indicates that it is a Windows machine. S
Threat Identification After identifying and performing a primary classification of an organization’s information assets, the analysis phase moves onto an examination of threats
(a) What is a pseudorandom generator? Give an example describing how it works. (b) Explain the key components of a wireless network and their purpose. (c) Describe the authen
Vulnerability Identification Specific avenues threat agents can exploit to attack an information asset are known as vulnerabilities. Examine how each threat can be generated and
Problem (a) Using Vigenère cipher and given the key abc, find the ciphertext for the message: simplicity Only the 26 lower-case alphabetical characters are used in messa
define cryptography
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