 Spring 2011  CSCI 27 Computer Networking Course Overview

 Defined networks and stand-alone computers  Described network advantages ◦ Relative to stand-alone computer  Discussed peer-to-peer networks ◦ Described traditional peer-to-peer networks  Discussed client/server networks  Defined and compared LANs, MANs and WANs Network+ Guide to Networks, 5 th Edition2

 Reviewed common client/server network elements  Described various network services  Reviewed the networking profession  Presented overview of certifications available  Skill sets required for networking positions and projects  Described advantages of joining professional associations Network+ Guide to Networks, 5 th Edition3

4  Standards and standard organizations  ISO’s OSI (Open Systems Interconnection) model ◦ Seven layers  IEEE’s Project 802  Significant IEEE 802 standards

Network+ Guide to Networks, 5 th Edition5  Transmission methods ◦ Analog or digital  Data modulation  Multiplexing  Basic data transmission concepts ◦ Full duplexing, attenuation, latency, noise  Transmission flaws ◦ Noise, attenuation, latency

Network+ Guide to Networks, 5 th Edition6  Media characteristics ◦ Throughput, cost, size and scalability, connectors, noise immunity Media ◦ Coaxial, Twisted pair, Fiber-optic  DTE and DCE connector cables ◦ DB-9 and DB-25  Structured cabling ◦ TIA/EIA joint 568 Commercial Building Wiring Standard ◦ Components  Best practices

Network+ Guide to Networks, 5 th Edition7  TCP/IP suite ◦ Core protocol and subprotocol introduction  IPv4 addressing ◦ Binary and dotted decimal notation ◦ Subnetting  Assigning addresses: BOOTP, DHCP, APIPA  IPv6 addressing  Sockets and Ports  Domain names, Host files, DHCP, DNS  Other application layer protocols

 Physical topology ◦ Basic network physical layout  Logical topology ◦ Signal transmission  Network backbones ◦ Network foundation  Switching ◦ Manages packet filtering, forwarding  Ethernet ◦ Cabling specifications, data frames, PoE Network+ Guide to Networks, 5th Edition8

 NIC interface cards ◦ Types, installation, testing, IRQ use, Base I/O port use, firmware settings, selection  Repeater and hubs  Bridges  Switches ◦ Installation, switching methods, VLANs and trunking, STP (Spanning Tree Protocol), Content and Multilayer Switches  Router characteristics and functions, protocols  Gateways and other multifunction devices

Network+ Guide to Networks, 5 th Edition10  WAN Topologies  PSTN and dial-up considerations  High speed digital data transmission ◦ Physical layer: ISDN, T-carriers, DSL, SONET ◦ Data Link layer: X.25, frame relay, ATM ◦ Physical and Data link: broadband  Remote connectivity  Remote virtual computing  VPNs

Network+ Guide to Networks, 5 th Edition11  WLAN Architecture characteristics  Popular WLAN Physical, Data Link layer standards  Wireless signal exchange  Small WLAN considerations  Larger, enterprise-wide WAN formation  Installing, configuring access points, clients  WLAN Pitfalls  MANs, WANs wireless transmission  Satellite Internet Access characteristics

Network+ Guide to Networks, 5 th Edition12  Characteristics common to all NOS ◦ Systems and servers, client support, identifying and organizing network elements, sharing applications and printers, managing system resources  Windows Server 2008 network structure  Unix and Linux concepts and features

Network+ Guide to Networks, 5 th Edition13  This chapter covered: ◦ Designing TCP/IP-Based Networks ◦ Subnetting ◦ CIDR ◦ Internet gateways ◦ Address translation ◦ TCP mail services ◦ Utility commands

Network+ Guide to Networks, 5 th Edition14  Basic Terminology  VoIP ◦ Analog phones, IP phones, softphones  Video over IP ◦ Streaming Video, IPTV, videoconferencing  Signaling protocols  Session control protocols  Transport protocols  QoS (Quality of Service) Assurance

Network+ Guide to Networks, 5 th Edition15  Risks and auditing  Security policy  Network security risk points  Routers  Firewalls  Encryption  Authentication  Wireless access

 Methodical, logical troubleshooting methodology ◦ Key to solving network problems  Troubleshooting tools ◦ Tone generator and tone locator ◦ Multimeters ◦ Basic cable continuity testers ◦ Cable performance tester ◦ Voltage event recorder ◦ Butt set ◦ Network monitors and protocol analyzers ◦ Wireless network testing tools Network+ Guide to Networks, 5 th Edition16

 System integrity and availability  Malware issues ◦ Types, characteristics, protection mechanisms  Fault tolerance issues and resolutions ◦ Physical environment, power techniques ◦ Topology and connectivity techniques ◦ Server and storage techniques  Data backup ◦ Media, strategy  Disaster recovery concerns and techniques Network+ Guide to Networks, 5 th Edition17

Network+ Guide to Networks, 5 th Edition18  Network management ◦ Assessing, monitoring, and maintaining network devices and connections  Importance of network documentation and policies  Network management applications  System logs and event logs, traffic shaping, caching, asset management system  Upgrade types and considerations ◦ Software, hardware