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Network Topology

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                                                                   Network Topology A network topology refers to the layout of the computers and devices in communications network. Two types of network topology:   Physical topology :   The arrangement of cabling.  Logical topology   :   T he path that data travels between computers on a network.                                                                                                                    Different between bus, star and ring...
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INTERNET CONNECTION Two types of Internet Connection: Dial-up Connection and broadband internet connection. DIAL-UP CONNECTION Two types of dial-up connection: Conventional Dial-up          To connect to the Internet, your computer dials its modem                 and connects to a modem attached to computer belonging to             our ISP.                     ISDN ( Integrated Service Digital Network )          1.Typically uses two phone lines transfer data.         2.  ISDN requires a special ISDN modem.         3. I SDN requires a special ISDN modem.         4. Characteristics of ISDN:   Faster, but pricey                               ...
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security measures

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Definition of security measures: The precautionary measures taken toward possible danger or damage. Explanation : Data backup A data backup is the result of copying or archiving files and folders for the purpose of being able to restore them in case of data loss. Data loss can be caused by many things ranging from computer viruses, hardware failures, file corruption, system failure or theft.  If you are responsible for business data, a loss may involve critical financial, customer, and company data.  If the data is on a personal computer, you could lose financial data and other key files, pictures, music and others that would be hard to replace. Cryptography Anti-virus Anti-virus software is a program or set of programs that are designed to prevent, search for, detect and remove software viruses and other malicious software like worms, Trojan horses, adware and more. If and when a virus is detected, the computer displays a warning asking what act...
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