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Abstract - PG Embedded systems
... which use past input values from the sensors to perform prediction operations. The existence of such prediction capability implies that the sensors do not need to transmit the data values if they differ from a predicted value by less than a certain prespecified threshold, or error bound. A simple ap ...
... which use past input values from the sensors to perform prediction operations. The existence of such prediction capability implies that the sensors do not need to transmit the data values if they differ from a predicted value by less than a certain prespecified threshold, or error bound. A simple ap ...
Three-Layer Hierarchical Network Design
... the desktop layer because it focuses on connecting client nodes, such as workstations to the network This layer ensure packets are delivered to end users ...
... the desktop layer because it focuses on connecting client nodes, such as workstations to the network This layer ensure packets are delivered to end users ...
0-ISP-Network-Design
... • Infrastructure Security: not improved by using private addressing – Still can be attacked from inside, or from customers, or by reflection techniques from the outside ...
... • Infrastructure Security: not improved by using private addressing – Still can be attacked from inside, or from customers, or by reflection techniques from the outside ...
REVIEW OF SURVIVABILITY TECHNIQUES IN PASSIVE OPTICAL
... protection switching performed at the OLT. This could greatly facilitate the control and management of all the protection switching and help to keep the ONUs simple. In [21],the authors proposed a technique for WDM-PONs with ring topology where the OLT is connected to multiple access nodes (ANs) via ...
... protection switching performed at the OLT. This could greatly facilitate the control and management of all the protection switching and help to keep the ONUs simple. In [21],the authors proposed a technique for WDM-PONs with ring topology where the OLT is connected to multiple access nodes (ANs) via ...
1 - Salisbury University
... it data centers to Internet, often bypassing tier-1, regional ISPs Introduction 1-42 ...
... it data centers to Internet, often bypassing tier-1, regional ISPs Introduction 1-42 ...
Smart Gird Energy Training Coalition
... Wired vs. Wireless Information and Power Transfer Wired (e.g. power-line communication) - Frequency duplex: low-freq. for power transfer, high-freq. for information transfer - Minimal cross-talk between information/energy transmissions and among different wires/lines ...
... Wired vs. Wireless Information and Power Transfer Wired (e.g. power-line communication) - Frequency duplex: low-freq. for power transfer, high-freq. for information transfer - Minimal cross-talk between information/energy transmissions and among different wires/lines ...
PDF
... can create multiple SSIDs using any of the four security settings on the Express Security page. However, if you do not use VLANs on your wireless LAN, the security options that you can assign to SSIDs are limited because on the Express Security page encryption settings and authentication types are l ...
... can create multiple SSIDs using any of the four security settings on the Express Security page. However, if you do not use VLANs on your wireless LAN, the security options that you can assign to SSIDs are limited because on the Express Security page encryption settings and authentication types are l ...
Computer Networks
... Switches Switches are a vital part of today’s LANs. Switches allow out high speed networks (100/1000Mbps) to travel without collisions. A switches main functions are: ...
... Switches Switches are a vital part of today’s LANs. Switches allow out high speed networks (100/1000Mbps) to travel without collisions. A switches main functions are: ...
Wireless LAN Auditing Tools
... The following are some of the options available for reducing the effectiveness of discovery tools: 1. Fake Access points Software such as Black Alchemy’s Fake AP for Linux generates thousands of counterfeit beacons, to hide wireless LAN among fake APs 2. Advanced Security Solutions Solutions such as ...
... The following are some of the options available for reducing the effectiveness of discovery tools: 1. Fake Access points Software such as Black Alchemy’s Fake AP for Linux generates thousands of counterfeit beacons, to hide wireless LAN among fake APs 2. Advanced Security Solutions Solutions such as ...
Optical Access Networks
... to reflections at the ends. The solution is to use Time Division Duplex (TDD) or different wavelengths, (1.3 and 1.55 µm, for example), which may be called Wavelength Division Duplex (WDD).. The cost of this solution grows linearly with the number of ONUs, and the operator must deploy and maintain a ...
... to reflections at the ends. The solution is to use Time Division Duplex (TDD) or different wavelengths, (1.3 and 1.55 µm, for example), which may be called Wavelength Division Duplex (WDD).. The cost of this solution grows linearly with the number of ONUs, and the operator must deploy and maintain a ...
ppt
... DNS • Users/hosts typically trust the host-address mapping provided by DNS • Problems • Zone transfers can provide useful list of target hosts • Interception of requests or comprise of DNS servers can result in bogus responses • Solution – authenticated requests/responses ...
... DNS • Users/hosts typically trust the host-address mapping provided by DNS • Problems • Zone transfers can provide useful list of target hosts • Interception of requests or comprise of DNS servers can result in bogus responses • Solution – authenticated requests/responses ...
TCP Performance Issues in Ad Hoc Networks
... Multi-Service Link Layer (MSLL) Wireless Internet Network (WINE) Wireless Adaptation Layer (WAL) ...
... Multi-Service Link Layer (MSLL) Wireless Internet Network (WINE) Wireless Adaptation Layer (WAL) ...
waf build - ns-3
... • The NS-3 Consortium is a collection of organizations cooperating to support and develop the ns-3 software. • It operates in support of the open source project – by providing a point of contact between industrial members and ns-3 developers, – by sponsoring events in support of ns-3 such as users' ...
... • The NS-3 Consortium is a collection of organizations cooperating to support and develop the ns-3 software. • It operates in support of the open source project – by providing a point of contact between industrial members and ns-3 developers, – by sponsoring events in support of ns-3 such as users' ...
Vision of the ITU-R on “Systems Beyond IMT
... objective of efficient transport of packet-based services. ...
... objective of efficient transport of packet-based services. ...
Document
... It was intended to simulate the physical security of a wired LAN Uses a single, manually configured, static key for data encryption WEP is not as secure as originally believed ...
... It was intended to simulate the physical security of a wired LAN Uses a single, manually configured, static key for data encryption WEP is not as secure as originally believed ...
Security - The University of Texas at Dallas
... • You hear them murmur, "Let's see you use that VISA card now, Professor "I-Don't-Give-A's-To Any MBA Candidate!" ...
... • You hear them murmur, "Let's see you use that VISA card now, Professor "I-Don't-Give-A's-To Any MBA Candidate!" ...
Mobile Communications
... APCP (Access Point Control Protocol) UNI+M (User-to-Network Interface with Mobility support) NNI+M (Network-to-Network Interface with Mobility support) ...
... APCP (Access Point Control Protocol) UNI+M (User-to-Network Interface with Mobility support) NNI+M (Network-to-Network Interface with Mobility support) ...
3G Data Network
... Dedicate up to 4 timeslots for data connection ~ 50 kbps Good for real-time applications c.w. GPRS Inefficient -> ties up resources, even when nothing sent Not as popular as GPRS (many skipping HSCSD) GSM 9.6kbps (one timeslot) GSM Data Also called CSD ...
... Dedicate up to 4 timeslots for data connection ~ 50 kbps Good for real-time applications c.w. GPRS Inefficient -> ties up resources, even when nothing sent Not as popular as GPRS (many skipping HSCSD) GSM 9.6kbps (one timeslot) GSM Data Also called CSD ...
1 In addition to assigning addresses from predefined pools, which
... For DSL to function properly, the local loop must be less than 5.5 kilometers (3.5 miles). DSL is a popular choice for enterprises that need to connect home users to the local network due to strong security. The different varieties of DSL provide different bandwidths, with capabilities exceeding tho ...
... For DSL to function properly, the local loop must be less than 5.5 kilometers (3.5 miles). DSL is a popular choice for enterprises that need to connect home users to the local network due to strong security. The different varieties of DSL provide different bandwidths, with capabilities exceeding tho ...
Slides - WSU Online
... How many packets need to be sent? How many packets have been sent? How many packets are left to be sent? If there is an error, which packets are needed to be sent again? ...
... How many packets need to be sent? How many packets have been sent? How many packets are left to be sent? If there is an error, which packets are needed to be sent again? ...
Technology In Action, Complete, 11e (Evans et al.) Chapter 7
... IV. piggyback V. node A. two or more computers connected together via software and hardware so they can communicate B. a computer, peripheral, or communication device on a network C. computer on which users accomplish specific tasks and make specific requests D. provides information and resources to ...
... IV. piggyback V. node A. two or more computers connected together via software and hardware so they can communicate B. a computer, peripheral, or communication device on a network C. computer on which users accomplish specific tasks and make specific requests D. provides information and resources to ...
Wireless Terrestrial Communications: Cellular Telephony
... Cellular telephony derives its name from the partition of a geographic area into small “cells”. Each cell is covered by a local radio transmitter and receiver just powerful enough to enable connectivity with cellular phones, referred to also as mobile terminals, within its area (Figure 1). The set o ...
... Cellular telephony derives its name from the partition of a geographic area into small “cells”. Each cell is covered by a local radio transmitter and receiver just powerful enough to enable connectivity with cellular phones, referred to also as mobile terminals, within its area (Figure 1). The set o ...
DNS Server Selection on Multi-Homed Hosts
... be used with solutions delivering more specific address selection policies / routes Clarification that some of the hard problems in this space require user intervention (manual selection of a network interface to use) Appendix A is now listing set of tools as ”BCP” ...
... be used with solutions delivering more specific address selection policies / routes Clarification that some of the hard problems in this space require user intervention (manual selection of a network interface to use) Appendix A is now listing set of tools as ”BCP” ...
A Comparative Analysis of Different Routing Scheme in Opportunistic Network Minakshi
... situations including heterogeneity of guidelines, irregular network between nearby nodes. The key issue of directing for OPPNET is to locate an entrepreneurial availability between the nodes and transmit information to the nodes when they meet with each other if conceivable [2] [3]. A few techniques ...
... situations including heterogeneity of guidelines, irregular network between nearby nodes. The key issue of directing for OPPNET is to locate an entrepreneurial availability between the nodes and transmit information to the nodes when they meet with each other if conceivable [2] [3]. A few techniques ...
Wireless security
![](https://commons.wikimedia.org/wiki/Special:FilePath/ADSL_router_with_Wi-Fi_(802.11_b-g).jpg?width=300)
Wireless security is the prevention of unauthorized access or damage to computers using wireless networks. The most common types of wireless security are Wired Equivalent Privacy (WEP) and Wi-Fi Protected Access (WPA). WEP is a notoriously weak security standard. The password it uses can often be cracked in a few minutes with a basic laptop computer and widely available software tools. WEP is an old IEEE 802.11 standard from 1999, which was outdated in 2003 by WPA, or Wi-Fi Protected Access. WPA was a quick alternative to improve security over WEP. The current standard is WPA2; some hardware cannot support WPA2 without firmware upgrade or replacement. WPA2 uses an encryption device that encrypts the network with a 256-bit key; the longer key length improves security over WEP.Many laptop computers have wireless cards pre-installed. The ability to enter a network while mobile has great benefits. However, wireless networking is prone to some security issues. Hackers have found wireless networks relatively easy to break into, and even use wireless technology to hack into wired networks. As a result, it is very important that enterprises define effective wireless security policies that guard against unauthorized access to important resources. Wireless Intrusion Prevention Systems (WIPS) or Wireless Intrusion Detection Systems (WIDS) are commonly used to enforce wireless security policies.The risks to users of wireless technology have increased as the service has become more popular. There were relatively few dangers when wireless technology was first introduced. Hackers had not yet had time to latch on to the new technology, and wireless networks were not commonly found in the work place. However, there are many security risks associated with the current wireless protocols and encryption methods, and in the carelessness and ignorance that exists at the user and corporate IT level. Hacking methods have become much more sophisticated and innovative with wireless access. Hacking has also become much easier and more accessible with easy-to-use Windows- or Linux-based tools being made available on the web at no charge.Some organizations that have no wireless access points installed do not feel that they need to address wireless security concerns. In-Stat MDR and META Group have estimated that 95% of all corporate laptop computers that were planned to be purchased in 2005 were equipped with wireless cards. Issues can arise in a supposedly non-wireless organization when a wireless laptop is plugged into the corporate network. A hacker could sit out in the parking lot and gather information from it through laptops and/or other devices, or even break in through this wireless card–equipped laptop and gain access to the wired network.