1) Name and describe data security process. It is about keeping data safe. Many individuals‚ small business and major companies rely heavily on their computer systems. If the data in these computer systems is damaged‚ lost‚ or stolen‚ it can lead to disaster. Key threats to data security. Such process can be done by using Passwords and encryptions. 2) Explain Internet and Intranet with a basic difference Internet is a worldwide system of interconnected computer networks‚ when you connect your
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What is Data Communications? Next Topic | TOC The distance over which data moves within a computer may vary from a few thousandths of an inch‚ as is the case within a single IC chip‚ to as much as several feet along the backplane of the main circuit board. Over such small distances‚ digital data may be transmitted as direct‚ two-level electrical signals over simple copper conductors. Except for the fastest computers‚ circuit designers are not very concerned about the shape of the conductor or
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Introduction Data communications (Datacom) is the engineering discipline concerned with communication between the computers. It is defined as a subset of telecommunication involving the transmission of data to and from computers and components of computer systems. More specifically data communication is transmitted via mediums such as wires‚ coaxial cables‚ fiber optics‚ or radiated electromagnetic waves such as broadcast radio‚ infrared light‚ microwaves‚ and satellites. Data Communications = Movement
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used‚ a high voltage on a communications medium can represent a logical 1 and a low voltage of can represent a logical 0. Different methods of encoding exist these are used for different types of communication between electrical devices. Distortion‚ noise‚ and cross talk on a cabling medium are factors that prevent the accuracy of transmitted data to be intact. For these reasons different encoding methods exist. An example is when 2 wires are used to transmit music data to a speaker Digital signals
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P3 explain the security risks and protection mechanisms involved in website performance Security Risks Hackers: A hacker is someone who finds weaknesses in a computer or computer network‚ enters‚ and modifies or/and steals data this could slow down performance very much or even completely halt it. Viruses: A computer virus is a computer program that can replicate itself and spread from one computer to another. The term "virus" is also commonly‚ but erroneously‚ used to refer to other types
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Is data stored in the cloud free from prying eyes? Cloud storage is an internet service that provides storage to computer users. Those who use corporate or private e-mail servers do not store their communications in the cloud environment. Important legal rulings highlight the differences between the two ways for storing e-mail. This an internet service that provides storage to computers users who are online social networking websites were you can upload pictures and store messages in your inbox
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CYP3.3: Understand how to safeguard the well being of children and young people 1.2 Explain child protection within the wider concept of safeguarding children and young people Child protection is much more than safeguarding or protecting children from direct abuse. The ‘Safe action plan’ is a piece of legislation that is very similar to the outcome of the 10 year strategies which we have here in Northern Ireland. It shows an understanding that children need protected in a wider view of safeguarding
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Data Security and Mobile Devices Introduction: Mobile devices such as smartphones‚ PDAs‚ tablets‚ and netbooks have become an integral part of everyday business operations. Millions of people log into their company’s secure network on mobile devices via wireless Internet or even accessing their email‚ making sensitive data more susceptible to data theft and hacking. Mobile technology is advancing at such a fast pace‚ making it harder for IT managers to keep up with newly emerging threats. Since
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its bandwidth. What is attenuation? Define channel capacity. What key factors affect channel capacity? Problems: Figure 1 shows the frequency domain function for a single square pulse. The signal pulse could represent a digital 1 in a communications system. Note that an infinite number of higher frequencies of decreasing magnitudes is needed to represent the single pulse. What implication does that have for a real digital transmission system? Suppose that a digitised TV picture is to be
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02. Compare and contrast between the bus and star topology. A network architecture in which a set of clients are connected by a shared communications line‚ called as a bus. A network consists of one central switch‚ hub or computer which acts as a conduit to transmit messages‚ called as a star. Bus networks are the simplest way to connect multiple clients‚ but often have problems when two clients want to transmit at the same time on the same bus. The star topology is a computer
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