Fundamentals of Information Systems Telecommunications PDF

Fundamentals of Information Systems Telecommunications The Internet and Wireless Technology DR/MSC  Learning Objectives 1. What are the principal components of telecommunications networks and key networking technologies? 2. What are the different type...

Fundamentals of Information Systems Telecommunications The Internet and Wireless Technology DR/MSC  Learning Objectives 1. What are the principal components of telecommunications networks and key networking technologies? 2. What are the different types of networks? What are the principal components of telecommunications networks and key networking technologies? Networking and Communication Trends ▪ Convergence ▪ Broadband ▪ Broadband wireless  What are the principal components of telecommunications networks and key networking technologies? Computer Network ▪ Two or more connected computers ▪ Major components in simple network o Client and server computers o Network interfaces (NICs) o Connection medium o Network operating system (NOS) o Hubs, switches, routers ▪ Software-defined networking (SDN) o Functions of switches and routers managed by central program What are the principal components of telecommunications networks and key networking technologies? Computer Network Components of a Simple Computer Network  What are the principal components of telecommunications networks and key networking technologies? Networks In Large Companies ▪ Large number of local area networks (LANs) linked to firm wide corporate networks ▪ Various powerful servers o Website, corporate intranet, extranet o Backend systems ▪ Mobile wireless LANs (Wi-Fi networks) ▪ Videoconferencing system ▪ Telephone network, wireless cell phones What are the principal components of telecommunications networks and key networking technologies? Networks In Large Companies Corporate Network Infrastructure  What are the principal components of telecommunications networks and key networking technologies? Key Digital Networking Technologies ▪ Client/server computing o Distributed computing model o Clients linked through network controlled by network server computer o Server sets rules of communication for network and provides every client with an address so others can find it on the network o Has largely replaced centralized mainframe computing o The Internet: largest implementation of client/server computing  What are the principal components of telecommunications networks and key networking technologies? Key Digital Networking Technologies ▪ Packet switching o Method of slicing digital messages into parcels (packets), sending packets along different communication paths as they become available, and then reassembling packets at destination o Previous circuit-switched networks required assembly of complete point- to-point circuit o Packet switching more efficient use of network’s communications capacity What are the principal components of telecommunications networks and key networking technologies? Key Digital Networking Technologies Packet-Switched Networks and Packet Communications  What are the principal components of telecommunications networks and key networking technologies? Key Digital Networking Technologies ▪ TCP/IP and connectivity o Protocols: rules that govern transmission of information between two points o Transmission Control Protocol/Internet Protocol (TCP/IP) -Common worldwide standard that is basis for the Internet o Department of Defense reference model for T C P / I P - Four layers (Application layer; Transport layer; Internet layer; Network interface layer) What are the principal components of telecommunications networks and key networking technologies? Key Digital Networking Technologies The Transmission Control Protocol/Internet Protocol (TCP/IP) Reference Model  What are the different types of networks? ▪ Signals: Digital versus analog o Modem: translates digital signals into analog form (and vice versa) ▪ Types of networks o Local area networks (LANs) -Ethernet -Client/server vs. peer-to-peer o Wide area networks (WANs) o Metropolitan area networks (MANs) o Campus area networks (CANs) What are the different types of networks? Functions of the Modem  What are the different types of networks? Transmission Media and Transmission Speed ▪ Signals: Physical transmission media o Twisted pair wire (CAT5 and CAT6) o Coaxial cable o Fiber optics cable o Wireless transmission media and devices (Satellites, Cellular systems) ▪ Bandwidth: Transmission speed o Bits per second (bps) o Hertz o Bandwidth  References Laudon, K. C., & Laudon, J. P. (2022). Global E-business and Collaboration. In Management Information Systems: Managing the Digital Firm (17th ed., pp. 283-291). Pearson. THANK YOU FOR YOUR QUESTIONS ? ATTENTION!