Educational Blog - Ajiboye Gbenga @ Sunlite Digital ALBESTA ACADEMY LEKKI

COMPUTER VIRUS (1 - 2)  DEFINITION, TYPES, EXAMPLES, VIRUS WARNING SIGNS, VIRUS DETECTION, AND EXAMPLES OF ANTIVIRUS SOFTWARE  Definition of Computer Virus 1. A computer virus is a small software program that interferes with computer operation and spreads from one computer to another. 2. A virus is a self-replicating program that copies itself and that can infect other programs by modifying them or their environment such that a call to an infected program implies a call to a virus. It is a program written by software developers to check piracy on some of their system and application software. Types of Computer Viruses 1. Boot Sector Virus: This type of virus infects the master boot record. It is challenging and a complex task to remove this virus and often requires the system to be formatted. Mostly it spreads through removable media. 2. Direct Action Virus: This is also called a non-resident virus, when executed scans the disks for targets, infects them, and then exits (i.e. ...

APPLICATION AREAS OF ICT  TELCONFERENCING - VIDEO CONFERENCING -TELEPRESENCE - TELECOMMUNICATION AND NETWORKING - TELECOMPUTING -MESSAGING AND INFORMATION RESEARCH ICT can be applied in the following areas namely; 1.  Teleconferencing  2. Video conferencing  3. Telepresence  4. Telecommunication and networking  5.  Telecomputing  6. Messaging  7.  Information research 1.  Teleconferencing:   A teleconference is a telephone meeting held between two or more locations through a telecommunications system. Technical terms like telephone conferencing, phone conferencing and audio conferencing are sometimes also used to refer to teleconferencing. In a teleconference, audio-only or audio-video data can be transmitted via one or more different telecommunications means, such as telephone, computer, television, radio, telegraph and teletypewriter. 2. Video conferencing:   This  is the conduct of a videoconference by set of ...

FEATURES/CHARACTERISTICS OF A COMPUTER  AS EXCELLENT TOOL FOR  DATA  PROCESSING OBJECTIVE 1. State the features/characteristics of a computer The common features/characteristics of computer as a tool for data processing are: Increased Accuracy Efficient Storage Facilities. Fast Access to Information. Handles Repetitive Tasks Decision Making Capability Increased Accuracy:  Computer performs calculations with 100% accuracy Efficient Storage Facilities:  Computer can store large amount of data. Fast Access to Information : Computer can process data at approximately 20 million per second Handles Repetitive Tasks : It can perform multiple task at the same time.... Decision Making Capability : Computers are good in making simple and complex decisions. CLASS ACTIVITIES 1. State two (2) features/characteristics of computer as a tool for processing data

HANDLING COMPUTER FILES 2  EFFECT OF FILE INSECURITY-DIFFERENCE BETWEEN COMPUTERIZED AND MANUAL FILE- ADVANTAGES OF COMPUTERIZED FILES OVER MANUAL FILES The following are the effects of file insecurity: 1.         Loss of data 2.         Data unreliability 3.         Data/software/program corruption         4.     Overwriting -  a process where new data is written over the existing data in the same physical space, making the original data inaccessible       5. Unauthorize use of data Advantages and disadvantages of computer file Advantages 1.         Faster and efficient in processing of information 2.         More secure 3.         Fast to access 4.         Uses less space 5.  ...

  Networking 3  Cables and Connectors Network cables are networking hardware used to connect one network device to other network devices or to connect two or more computers to share printers, scanners etc. Types of network cables 1. twisted pair cables   2.  coaxial cable 3.  optical fiber cable 4. Telephone cables 1. Twisted pair cables :   A twisted-pair cable is a cable made by intertwining two separate insulated wires. There are two twisted pair types: shielded and unshielded. A  STP  (Shielded Twisted Pair) cable has a fine wire mesh surrounding the wires to protect the transmission and a  UTP  (Unshielded Twisted Pair) cable does not. 2.  Coaxial cable : A Coaxial cable is a cable used in the transmission of video, communications, and audio. This cable has high bandwidths and greater transmission capacity. Most users relate to a coaxial or coax cable as a cable used to connect thei...