Overview

Overview - Course Overview EE450 Introduction to Computer Networks Professor A Zahid A.Zahid-EE450 1 Course Overview Part 1 Data Communications

Info iconThis preview shows pages 1–11. Sign up to view the full content.

View Full Document Right Arrow Icon
A.Zahid-EE450 1 Course Overview EE450: Introduction to Computer Networks Professor A. Zahid
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A.Zahid-EE450 2 Course Overview • Part 2: Computer Networking Protocols (TCP/IP) • Part 3: Wide Area Networks (WANs) • Part 4: Local Area Networks (LANs) • Part 5: Internetworking • Part 6: Transport Layer Protocols • Part 7: Network Applications • Part 8: Network Security
Background image of page 2
A.Zahid-EE450 3 Simple Data Communications Model
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A.Zahid-EE450 4 Components of the Model Source – Generates data to be transmitted Transmitter – Converts data into transmittable signals Transmission System/Media – Carries the transmitted signal Receiver – Converts received signal into data Destination – Takes incoming data
Background image of page 4
A.Zahid-EE450 5 Key Communications Tasks • Transmission System Utilization • Interfacing • Signal Generation • Synchronization • Exchange Management • Error detection and correction • Addressing and routing • Recovery • Message formatting • Security • Network Management
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A.Zahid-EE450 6 Computer Networks • A computer network is a set of nodes such as routers, switches, hosts, etc. . interconnected via transmission facilities such as copper, cable, fiber, satellite, radio, microwave, etc. . for the purpose of providing services to end systems/users • Do we need networking? Yes we do! • Point-to-point communication is not practical! – Devices are too far apart – Large set of devices would need impractical number of connections. See illustration next chart
Background image of page 6
A.Zahid-EE450 7 Example: Telephone Network Fully-Connected Mesh # of FDX links = N(N-1)/2 e.g., N=6; 6(5)/2=15 links Total # ports = N(N-1) e.g., N=6; 6(5)=30 ports Central Office (CO) With Central Office # of FDX links = N e.g., N=6; 6 links Total # of ports = N e.g. N=6, 6 ports
Background image of page 7

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A.Zahid-EE450 8 Multimedia Convergence Network Telephone companies (telco) Internet Service Providers (ISP) Networking Computer Hardware/Software Telco/wireless Hardware Video - pre-recorded / on-demand (e.g., MPEG, RealNet) - live (video phone, video teleconference) Broadcast TV Film Data - e-mail - files -- executables -- source code -- data -- html -- image Computer Software Financial, eCommerce, etc. Major industries Recording Broadcast Radio Voice / Audio - pre-recorded /on-demand (streaming or file [mp3]) - live (RealNet, VoIP) PDA Cellphone Pager Wireless
Background image of page 8
A.Zahid-EE450 9 Servers, Clients and Peers • A network computer can either provide service or request service • A server is a service provider, providing access to network resources • A Client is a service requester • A Peer-to-Peer network does not have a dedicated server. All computers are equal and they both provide and request services.
Background image of page 9

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
A.Zahid-EE450 10 Server Roles • Servers can assume several roles and a single server could also have several roles • Examples of Servers include: File Servers : Manages user access to shared files Print Servers : Manages user access to print resources
Background image of page 10
Image of page 11
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 03/01/2008 for the course EE 450 taught by Professor Zahid during the Spring '06 term at USC.

Page1 / 64

Overview - Course Overview EE450 Introduction to Computer Networks Professor A Zahid A.Zahid-EE450 1 Course Overview Part 1 Data Communications

This preview shows document pages 1 - 11. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online