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wireless wide area network ppt

BACnet Wide Area Network Security Threat Assessment ppt

BACnet Wide Area Network Security Threat Assessment ppt

An ninh - Bảo mật

... 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...
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Describe wireless wide area networks (WWANs) and how they are used

Describe wireless wide area networks (WWANs) and how they are used

Kĩ thuật Viễn thông

... 8-PSK–CDMA2000 1xRTT•Operates on two 1.25 MHz -wide frequency channels•Supports 144 Kbps packet data transmission2Objectives•Describe wireless wide area networks (WWANs) and how they are used•Describe ... 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 ... (continued)•Short Message Services (SMS)–One of the most widely used applications–Allows for the delivery of short, text-based messages between wireless devices•Messages are limited to about 160...
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Tài liệu Ethernet Access for Next Generation Metro and Wide Area Networks pptx

Tài liệu Ethernet Access for Next Generation Metro and Wide Area Networks pptx

Quản trị mạng

... and Wide Area NetworksOL-14760-01 Design Considerations •Use of EIGRP stub areas eliminates queries to spoke routers. •OSPF must periodically synchronize router databases within an area, ... generating link up/down SNMP traps and syslog messages for network management systems.28Ethernet Access for Next Generation Metro and Wide Area NetworksOL-14760-01 Design ConsiderationsDesign ConsiderationsThis ... EdgeProvider EdgeCustomerEdge (CE)User Network Interface (UNI)Customer Premise Equipment (CPE)34Ethernet Access for Next Generation Metro and Wide Area NetworksOL-14760-01 Scalability ConsiderationsTable...
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Tài liệu Enterprise Data Center Wide Area Application Services (WAAS) Design Guide pptx

Tài liệu Enterprise Data Center Wide Area Application Services (WAAS) Design Guide pptx

Quản trị mạng

... supports the storage area network (SAN) fabric and connectivity between servers and other storage devices, such as storage arrays and tape drives.Front End Network The front-end network contains ... 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) ... 11Front End Network 12Core Layer 13Aggregation Layer 13Access Layer 13Back-End Network 14SAN Core Layer 14SAN Edge Layer 15WAN Edge Component 15 19Enterprise Data Center Wide Area...
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Tài liệu Chapter11 Wide Area Networking Protocols pptx

Tài liệu Chapter11 Wide Area Networking Protocols pptx

Chứng chỉ quốc tế

... 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 ... 使用网络控制协议 (Network Control Protocol,NCP)来验证上层的 OSI 参考模型的网络层协议 6.异步传输模式(Asynchronous Transfer 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 ... 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 router...
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Tài liệu ADC KRONE - Catalogue - Network Connetivity Solution - Work Area Products pptx

Tài liệu ADC KRONE - Catalogue - Network Connetivity Solution - Work Area Products pptx

Phần cứng

... faceplate 6644 1 152-XX 2 outlet labeling areas and 2 individual port ID areas4-port faceplate 6644 1 154-XX 2 outlet labeling areas and 4 individual port ID areasCopperTen™ 4-port staggered ... TNSCSFPSO4-YY 2 Includes: 2 outlet labeling areas and 4 individual port ID areas. 6-port faceplate 6644 1 156-XX 2 outlet labeling areas and 6 individual port ID areasDual-gang flush mount faceplates ... high, 2.572" to 3.866" (65.33mm to 98.2mm) wide Maximum thickness: 0.08" (2.03mm) 1 outlet labeling area, 4 individual port ID areas; includes 2 blank paper labels, 1 clear plastic...
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Low Rate Wireless Personal Area Networks

Low Rate Wireless Personal Area Networks

Kỹ thuật lập trình

... using SIR•Then they shift to FIR speed Wireless CommunicationsLow Rate Wireless Personal Area Networks2Objectives•Describe a wireless personal area network (WPAN)•List the different WPAN ... work•Describe the security features of low-rate WPAN technology 3What is a WPAN?• Wireless personal area network (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...
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High Rate Wireless Personal Area Networks

High Rate Wireless Personal Area Networks

Kĩ thuật Viễn thông

... 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 new ... corrected–Also called error correction (FEC) Wireless# Guide to Wireless Communications 26Mesh Networking (802.15.5) (continued) Wireless# Guide to Wireless Communications 28How UWB Works•UWB ... and storage Wireless# Guide to Wireless Communications 32How UWB Works (continued) Wireless# Guide to Wireless Communications 18Additional MAC Layer Functionality (continued) Wireless CommunicationsChapter...
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Wireless Local Area Networks

Wireless Local Area Networks

Kỹ thuật lập trình

... 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...
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