By Joseph Migga Kizza
In its 4th version, this booklet continues to be interested by expanding public expertise of the character and explanations of cyber vandalism and cybercriminals, the weaknesses inherent in our on-line world infrastructure, and the capability on hand to guard ourselves and our society. This new version goals to combine protection schooling and knowledge with discussions of morality and ethics. The reader will achieve an realizing of ways the safety of data generally and of desktop networks specifically, on which our nationwide severe infrastructure and, certainly, our lives rely, is predicated squarely at the people who construct the and layout and increase the software program that run the networks that shop our very important info. Addressing safety concerns 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.
15 Types of Hubs in a LAN network with the help of a 5—Cyberspace Infrastructure 47 dynamic bridge table. The bridge table, which is initially empty, maintains the LAN addresses for each computer in the LAN and the addresses of each bridge interface that connects the LAN to other LANs. Bridges, like hubs, can be either simple or multiple port. 16 shows the position of a simple bridge in a network cluster. 17 shows a multiple port bridge. 18 LAN with Two Interfaces LAN addresses on each frame in the bridge table are of the form cc-cccc-cc-cc-cc-cc-cc, where cc are hexadecimal integers.
Otherwise, it is not a good technology. We have seen and probably used many technologies that we judge to be of no use to us. What we call good and bad technologies are scaled on our value system. If the process outputs are judged as having contributed to good knowledge in our value system (moral values), then that technology is judged good and useful. We have seen many such technologies. However, we have also seen a myriad of technologies that come nowhere near our value systems. These we call bad technologies.
Because our interest in this book is in digital networks, we will focus on the encoding of digital data. 42 Computer Network Security and Cyber Ethics In an analog encoding of digital data, the encoding scheme uses a continuous oscillating wave, usually a sine wave, with a constant frequency signal called a carrier signal. Carrier signals have three characteristics: amplitude, frequency, and phase shift. The scheme then uses a modem, a modulationdemodulation pair to modulate and demodulate any one of the three carrier characteristics.