wide area networks definition
Describe wireless wide area networks (WWANs) and how they are used
... 8-PSKCDMA2000 1xRTTãOperates on two 1.25 MHz -wide frequency channelsãSupports 144 Kbps packet data transmission 2ObjectivesãDescribe wireless wide area networks (WWANs) and how they are usedãDescribe ... pager, satellite telephone, and location services 41SummaryãIn cellular telephone networks, the coverage area is divided into sections called cellsãCellular technology generationsFirst ... Mbps for a stationary userã3G network technologiesCDMA2000 1xEVDOãFor 2.5G CDMA2000 1xRTT networks 25Binary Runtime Environment for Wireless (BREW)ãBREW is a thin software environmentVery...
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Tài liệu Wide Area Networks doc
... less message sizeã Forward the trafficElse: fair queue the trafficA token bucket is a formal definition of a rate of transfer. It has three components: a burst size, a mean rate, and a time ... intervalAlso called the measurement interval, it specifies the time quantum in seconds per burst.By definition, over any integral multiple of the interval, the bit rate of the interface will not ... mentioned earlier in the WRED notes, WRED behavior for a class can be configured as part of the class definition. (See the next slide.)For additional information, refer to: http://cisco.com/univercd/cc/td/doc/product/software/ios121/121cgcr/qos_c/qcprt2/qcdwfq.htmBesides...
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Tài liệu Ethernet Access for Next Generation Metro and Wide Area Networks pptx
... and Wide Area Networks OL-14760-01 Design Considerations ãUse of EIGRP stub areas eliminates queries to spoke routers. ãOSPF must periodically synchronize router databases within an area, ... circuitBranchHubs/CampusVoiceGatewayPSTN221479 11Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 Technology OverviewThe remote routers have a sub-interface corresponding ... suffer.SpokesHubsvirtual circuit221485 3Ethernet Access for Next Generation Metro and Wide Area Networks OL-14760-01 IntroductionFor additional information on V3PN deployments, the following...
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wan, wide area networks
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Low Rate Wireless Personal Area Networks
... to FIR speed Wireless CommunicationsLow Rate Wireless Personal Area Networks 2ObjectivesãDescribe a wireless personal area network (WPAN)ãList the different WPAN standards and their ... workãDescribe the security features of low-rate WPAN technology 3What is a WPAN?ãWireless personal area network (WPAN)Group of technologies that are designed for short-range communications–Eliminates...
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High Rate Wireless Personal Area Networks
... are a nanosecond longSignal spreads over a very wide frequency bandãIn the UWB case, the signal spreads over a band that is at least 500 MHz wide Orthogonal frequency division multiplexing ... Layer Functionality (continued) Wireless CommunicationsChapter 6High Rate Wireless Personal Area Networks Wireless# Guide to Wireless Communications 36Competition Among WPAN StandardsãIEEE ... to Wireless Communications 28How UWB WorksãUWB PHYDigital signals need to be spread over a wide bandãUsing techniques such as FHSS or DSSSUWB uses short analog pulses for signalingãDoes...
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Wireless Local Area Networks
... wireless clients and an APãExtended Service Set (ESS)Two or more BSS wireless networks installed in same area –Provides users with uninterrupted mobile access to the networkãAll wireless ... wireless clients can only communicate among themselves Wireless CommunicationsWireless Local Area Networks 4WLAN ComponentsãMinimal hardware needed for a WLANComputerISPWireless network ... motherboard 3WLAN ApplicationsãWireless networks are increasing in popularityãInstalling cabling is inconvenient and very expensiveWireless networks solve this problemãWith a wireless...
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Wireless Metropolitan Area Networks
... easily incorporate WiMAX networks 3What is a WMAN?ãWireless metropolitan area networks (WMANs)Provide wireless connectivity across a substantial geographical area such as a large cityãWMANs ... to an entire area with only a few radio transmitters–MMDS cell size can have a radius of up to 35 miles (56 kilometers) 2ObjectivesãExplain why wireless metropolitan area networks (WMANs) ... wired networks beyond a single locationãWithout the expense of high-speed cable-based connections–Extend user mobility throughout a metropolitan area –Provide high-speed connections to areas...
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Tổng quan về mạng WAN (Wide Area Netwwork) - Phần mềm Cool Chat
... tố hết sức quan trọng. Giải pháp mạng WAN ( Wide Area Network - Mạng diện rộng ) được áp dụng. Chúng có nhiệm vụ kết hợp tất cả các mạng LAN (Local Area Network ) ở xa lại thành một mạng duy...
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Personal Area Networks (PANs)
... C. and Heile R. F. Paving the Way for Personal Area Network Standards: anOverview of the IEEE P802.15 Working Group for Wireless Personal Area Networks, IEEE Personal Commu-nications, February, ... and Personal Digital Assistants (PDAs).Wireless Networks3 16Figure 11.14 Main differences between HomeRF versions 1.2 and 2.0 11Personal Area Networks (PANs)11.1 Introduction to PAN Technology ... collocated networks by checking the access code field on thereceived packets which is different for every piconet, as we explain later. However, when alarge number of piconets coexist in the same area, ...
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Wireless Local Area Networks
... MAC to provide security improve-ments.9.7 SummaryIn this chapter we cover the area of Wireless Local Area Networks by focusing on a numberof issues:†WLAN topologies. The two types of wireless ... Stallings W. Local and Metropolitan Area Networks, Fifth Edition, Upper Saddle River, NJ.[13] Obaidat M. S. and Ahmed C. B. Schemes for Mobility Management of Wireless ATM Networks, InternationalJournal ... is another area of concern in WLANs. Radio signals may propagate beyond thegeographical area of an organization. All a potential intruder has to do is to approach theWLAN operating area and with...
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CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenario
... /?Issue=34&IssueDate=04-01-2001&CP= 11/06/01Date of Issue: 04-01-2001 CCNA Layer 2 Switching - Virtual Local Area Networks Lab Scenarioby Leigh Anne Chisholm IntroductionPreparing Your SwitchesSection 1...
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Tài liệu cisco migration_Enterprise Branch Wide Area Application docx
... be found in the Unified 7Enterprise Branch Wide Area Application Services Design Guide (Version 1.1)OL-12945-01 IntroductionFigure 1 Wide Area Application Services (WAAS) MechanismsThe ... cache flows can be applied on the interface performing WCCP redirects. 22Enterprise Branch Wide Area Application Services Design Guide (Version 1.1)OL-12945-01 WAAS Branch Design ConsiderationsBranch ... hash buckets are synchronized within the service group, and the hash 49Enterprise Branch Wide Area Application Services Design Guide (Version 1.1)OL-12945-01 Appendix B—Example Test ConfigurationFigure...
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Tài liệu Enterprise Data Center Wide Area Application Services (WAAS) Design Guide pptx
... 95134-1706 USAEnterprise Data Center Wide Area Application Services (WAAS) Design GuideThis document offers guidelines and best practices for implementing Wide Area Application Services (WAAS) ... TrafficServer to Client TrafficWAE FarmVLAN 28VLAN 2959867 31Enterprise Data Center Wide Area Application Services (WAAS) Design GuideOL-12934-01 Design and Implementation DetailsFor ... %LINK-5-CHANGED: Interface Loopback0, changed state to administratively down 45Enterprise Data Center Wide Area Application Services (WAAS) Design GuideOL-12934-01 Implementation DetailsNote that the...
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Tài liệu Chapter11 Wide Area Networking Protocols pptx
... s0/0 Chapter11 Wide Area Networking Protocols Introduction to Wide Area Networks WAN 是覆盖地理范围相对较为广阔的数据通信网络,它一般是利用公共载体(比如电信公司)提供的设备进行传输.WAN 技术运行在 OSI 的最下 3 层 广域网 (Wide Area Network,WAN)的一些术语 ... Mode,ATM):国际电信联盟电信标准委员会(ITU-T)制定的信元(cell)中继续标准.ATM 使用固定长度的 53 字节长的信元方式进行传输,ATM 网络的面向连接的 Cabling the Wide Area Network Cisco 的串行连接支持几乎所有类型的 WAN 服务.HDLC,PPP 和帧中继使用相同的物理层定义的接口,但是和 ISDN 的不一样.我们先来回顾下...
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Tài liệu The Case for Virtual Local Area Networks (VLANs) ppt
... Coaxial Cable-Based EthernetTo simplify the installation of Ethernet networks, a change wasmade to the network topology. Networks were converted fromcoaxial cable to twisted pair cabling by ... hub, networks became more crowded. A solution to the problem was necessary.Figure 2.Hub-Based Twisted Pair EthernetTed Rohling, Global Knowledge Instructor, CISSPThe Case for Virtual Local Area Networks ... orsubnet.In most practical networks, all devices in a small business or enterprise network are not located on the sameEthernet network broadcast domain.We separate the networks to limit broadcast...
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