Transcript Slide 1
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, 5th Edition 2 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, 5th Edition 3 Standards and standard organizations ISO’s OSI (Open Systems Interconnection) model ◦ Seven layers IEEE’s Project 802 Significant IEEE 802 standards 4 Network+ Guide to Networks, 5th Edition Transmission methods ◦ Analog or digital Data modulation Multiplexing Basic data transmission concepts ◦ Full duplexing, attenuation, latency, noise Transmission flaws ◦ Noise, attenuation, latency 5 Network+ Guide to Networks, 5th Edition 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 6 Network+ Guide to Networks, 5th Edition 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 7 Network+ Guide to Networks, 5th Edition 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 8 Network+ Guide to Networks, 5th Edition 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 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 10 Network+ Guide to Networks, 5th Edition 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 11 Network+ Guide to Networks, 5th Edition 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 12 Network+ Guide to Networks, 5th Edition This chapter covered: ◦ ◦ ◦ ◦ ◦ ◦ ◦ Designing TCP/IP-Based Networks Subnetting CIDR Internet gateways Address translation TCP mail services Utility commands 13 Network+ Guide to Networks, 5th Edition 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 14 Network+ Guide to Networks, 5th Edition Risks and auditing Security policy Network security risk points Routers Firewalls Encryption Authentication Wireless access 15 Network+ Guide to Networks, 5th Edition 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 16 Network+ Guide to Networks, 5th Edition 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 17 Network+ Guide to Networks, 5th Edition 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 18 Network+ Guide to Networks, 5th Edition