This chapter include objectives: Identify at least three benefits of using a network, differentiate between LANs and WANs, identify at (east three common network topologies, name two common network media, identify network hardware and linking devices. | CSC 101 Introduction to Computing Lecture 19 Dr. Iftikhar Azim Niaz ianiaz@ 1 1 Last Lecture Summary I 2 Embedded Operating Systems Windows XP Embedded, Windows CE Embedded CE, Windows Mobile Pocket PC Palm OS iPhone OS / iOS BlackBerry OS Google Andriod Embedded Linux Symbian OS 2 Last Lecture Summary II 3 Managing files Searching for files Viewing images Uninstalling programs Cleaning up Disks Defragmenting Disks Backing up files and disks Disk Compression Intrusion detection Screen savers Antivirus Removing spyware and adware Filtering Internet content Playing media files Burning optical discs and Maintaining a PC 3 Objectives Overview Network Definition Many organizations quickly learned the importance of connecting PCs Data communications—the electronic transfer of information between computers—became a major focus of the computer industry. Set of technologies that connects computers Allows communication and collaboration between users information they share can be much more than text documents Internet is one big Example Networks A network is a collection of computers and devices connected together via communications devices and transmission media Advantages of a network include: Network Communications Computer communications describes a process in which two or more computers or devices transfer data, instructions, and information Sending device — initiates instruction to transmit data, instructions, or information Communications device — connects the communications channel to the receiving device Receiving device — accepts transmission of data, instructions, or information Communications device — connects the sending device to the communications channel Communications channel — media on which data, instructions, or information travel Communications Systems (a) mainframe computers, (b) servers, (c) desktop computers, (d) notebook computers, (e) smart phones (f) Internet-enabled portable media players (g) handheld game consoles, and . | CSC 101 Introduction to Computing Lecture 19 Dr. Iftikhar Azim Niaz ianiaz@ 1 1 Last Lecture Summary I 2 Embedded Operating Systems Windows XP Embedded, Windows CE Embedded CE, Windows Mobile Pocket PC Palm OS iPhone OS / iOS BlackBerry OS Google Andriod Embedded Linux Symbian OS 2 Last Lecture Summary II 3 Managing files Searching for files Viewing images Uninstalling programs Cleaning up Disks Defragmenting Disks Backing up files and disks Disk Compression Intrusion detection Screen savers Antivirus Removing spyware and adware Filtering Internet content Playing media files Burning optical discs and Maintaining a PC 3 Objectives Overview Network Definition Many organizations quickly learned the importance of connecting PCs Data communications—the electronic transfer of information between computers—became a major focus of the computer industry. Set of technologies that connects computers Allows communication and collaboration between users information they share can .
