... using SIR•Then they shift to FIR speed Wireless CommunicationsLow Rate WirelessPersonalArea Networks2Objectives•Describe a wirelesspersonalareanetwork (WPAN)•List the different WPAN ... work•Describe the security features of low-rate WPAN technology 3What is a WPAN?• Wireless personalareanetwork (WPAN)–Group of technologies that are designed for short-range communications–Eliminates ... devices•Include–Bluetooth–802.15.4 (ZigBee)12Bluetooth Protocol Stack (continued)14Bluetooth Protocol Stack (continued)• Network topologies (continued)–Scatternet•Group of piconets in which connections exist between...
... Functionality (continued) Wireless CommunicationsChapter 6High Rate WirelessPersonalArea Networks Wireless# Guide to Wireless Communications 36Competition Among WPAN Standards•IEEE 802.15.3 ... are present in the same order in every frame Wireless# Guide to Wireless Communications 15802.15.3 Network Topology (continued) Wireless# Guide to Wireless Communications 27Ultra Wide Band (UWB)•Allows ... and storage Wireless# Guide to Wireless Communications 32How UWB Works (continued) Wireless# Guide to Wireless Communications 18Additional MAC Layer Functionality (continued) Wireless CommunicationsChapter...
... can be implemented to increase network security. There are two primary types of IDS: network based and host-based. The network based system acts similarly to a network level firewall. It cannot ... information about the network con-figuration. Authentication, especially of exter-nal BACnet users. Network Layer Attacks I-Am-Router-To -Network The I-Am-Router-To -Network message can ... traffic across the untrusted network (LAN/Internet). • As a router, separates the trusted network from the untrusted and thus can act as a BACnet firewall, performing network layer or application...
... wired network interface port•AP functions– Wireless communications base station–Bridge between the wireless and wired networks6 Wireless Network Interface Card (continued)5 Wireless Network ... of wireless clients and an AP•Extended Service Set (ESS)–Two or more BSS wireless networks installed in same area –Provides users with uninterrupted mobile access to the network •All wireless ... communicate among themselves Wireless Communications Wireless Local Area Networks4WLAN Components•Minimal hardware needed for a WLAN–Computer–ISP– Wireless network interface card–Access...
... WMAN?• Wireless metropolitan area networks (WMANs)–Provide wireless connectivity across a substantial geographical area such as a large city•WMANs primary goals–Extend wired networks ... Wireless Communications Wireless Metropolitan Area Networks14Multichannel Multipoint Distribution Service (MMDS)•Multichannel multipoint distribution service (MMDS) –Fixed broadband wireless ... same network •WiMAX MAC layer makes it easy for carriers to deploy the network •Range of a WiMAX network is measured in miles•Cellular phone operators can easily incorporate WiMAX networks3What...
... 1xEVDO•For 2.5G CDMA2000 1xRTT networks25Binary Runtime Environment for Wireless (BREW)•BREW is a thin software environment–Very small program that resides on a wireless device •Capable ... frequency channels•Supports 144 Kbps packet data transmission2Objectives•Describe wireless wide area networks (WWANs) and how they are used•Describe the applications that can be used on ... 24-hour period30Satellite Transmissions (continued)26Satellite Broadband Wireless •Use of satellites for personalwireless communication is fairly recent•Satellite use falls into three broad...
... nhất được nhận dạng bởi thiết bị hai đầu.5.4 CÔNG NGHỆ VLAN:VLAN là viết tắt của Virtual Local AreaNetwork hay còn gọi là mạng LAN ảo. Một VLAN được định nghĩa là một nhóm logic các thiết bị ... hình native VLAN thì phải cấu hình ở giao diện vật lý.CHƯƠNG IILÝ THUYẾT VỀ MẠNGWAN (WIDE AREA NETWORK) I. KHÁI NIỆM :Là mạng được thiết lập để liên kết các máy tính của hai hay nhiều khu ... trí rất xa nhau, ví dụ như những quốc gia khác nhau, thì khi đó ta có mạng diện rộng WAN(Wide Area Network) TrangNGUYỄN ĐÌNH CÔNG – 36CLTH2929V./. CÁC CÔNG NGHỆ MẠNG LAN :5.1. CÔNG NGHỆ CHUYỂN...
... and Heile R. F. Paving the Way for PersonalAreaNetwork Standards: anOverview of the IEEE P802.15 Working Group for WirelessPersonalArea Networks, IEEE Personal Commu-nications, February, ... A-nodes are mobile personal computers and Personal Digital Assistants (PDAs). Wireless Networks316Figure 11.14 Main differences between HomeRF versions 1.2 and 2.011 Personal Area Networks (PANs)11.1 ... Distributed Topology Construction for Bluetooth Personal Area Networks, in Proceedings of IEEE INFOCOM, 2001, pp. 1577–1586.[13] The HomeRF Working Group, Wireless Networking Choices for the Broadband...
... 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 LAN topologies used today are the ... Local Access: Wireless LAN and Wireless ATM, IEEE Commu-nications Magazine, November, 1997, 34–40.[15] Geier J. Wireless LANs, Implementing Interoperable Networks, Macmillan Network Architecture ... Control Protocol for Wireless Data Networks, inProceedings of IEEE GLOBECOM, 1993, pp. 1713–1717.[9] Chen K C. and Lee C H. Group Randomly Access Polling for Wireless Data Networks, in Proceedings...
... complete.Applicant's signatureApplicant's name Date 3 PERSONAL DETAILED FORM Application for: Team Leader Emp. Code: TeamLeaderI .PERSONAL DETAILS Full Name: DOB (dd/mm/yyyy) POB ID Number...
... Website: www.bkacad.comRole of Internetwork Operating System (IOS)• Basic routing and switching functions • Reliable and secure access to networked resources • Network scalability• Using Cisco ... www.bkacad.comConfigure Router Interfaces• Identify the role of a router in a network. Học viện mạng Bách khoa - Website: www.bkacad.comRole of Internetwork Operating System (IOS)• Identify the relationship between ... View the output to verify that it was not corrupted.Chapter 11 - Configuring and Testing Your Network CCNA Exploration 4.0CCNA Exploration 4.0Manage configuration file• Trace the steps used...