By Joseph Migga Kizza
In its 4th variation, this e-book is still serious about expanding public understanding of the character and factors of cyber vandalism and cybercriminals, the weaknesses inherent in our on-line world infrastructure, and the capability to be had to guard ourselves and our society. This re-creation goals to combine protection schooling and expertise with discussions of morality and ethics. The reader will achieve an figuring out of ways the safety of data usually and of machine networks particularly, on which our nationwide serious infrastructure and, certainly, our lives rely, relies squarely at the people who construct the and layout and increase the software program that run the networks that shop our very important details. Addressing defense matters with ever-growing social networks are new chapters: «Security of cellular platforms» and «Security within the Cloud Infrastructure.»
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Extra resources for Computer Network Security and Cyber Ethics, 4th ed.
14 (c) shows a twisted pair. Coaxial cables are dual conductor cables with an inner conductor in the core of the cable protected by an insulation layer and the outer conductor surrounding the insulation. The outer conductor is itself protected by yet another outer coating called the sheath. 14 (a) shows a coaxial cable. Coaxial cables are commonly used in television transmissions. Unlike twisted pairs, coaxial cables can be used over long distances. A traditional medium for wired communication are copper wires, which have been used in communication because of their low resistance to electrical currents which allow signals to travel even further.
Because the packet network is very similar to the postal system we discussed earlier in this chapter, let us draw parallels between the protocols of the postal communication system and those of the packet network or computer 54 Computer Network Security and Cyber Ethics network communication system. You may recall that in the postal system, messages were also moved in packets, like envelopes, cards, and boxes. The protocols in the process of moving a letter from your hands to your aunt’s hands were in a stack.
Each prisoner has four recourses: (i) plead guilty without the friend pleading guilty, which means deserting a friend; (ii) refuse to plead guilty while the friend pleads guilty, which means betrayal and probably a maximum sentence; (iii) plead guilty while the friend pleads guilty, which means light sentences for both of them; or (iv) both refuse to plead guilty and each receives either a light sentence or a maximum sentence. Whichever option the prisoners take is risky because they do not have enough information to enable them to make a wise decision.