![Chapter 08](http://s1.studyres.com/store/data/008736118_1-2ca49718d5e609a8a2b078a1b27afbca-300x300.png)
Chapter 08
... Uses of Computer Communications Text messaging allows users to send and receive short text messages on a phone or other mobile device or computer Picture messaging allows users to send pictures and sound files Video messaging allows users to send short video clips Wireless instant messaging allows ...
... Uses of Computer Communications Text messaging allows users to send and receive short text messages on a phone or other mobile device or computer Picture messaging allows users to send pictures and sound files Video messaging allows users to send short video clips Wireless instant messaging allows ...
Chapter 6 slides, Computer Networking, 3rd edition
... - Replace a single high power base station with several lower power base stations, each covering a smaller geographical area, a ‘cell’. - Each of the base stations is allocated a number of channels (portion of the overall system channels) 6: Wireless and Mobile Networks ...
... - Replace a single high power base station with several lower power base stations, each covering a smaller geographical area, a ‘cell’. - Each of the base stations is allocated a number of channels (portion of the overall system channels) 6: Wireless and Mobile Networks ...
- AIR802.com
... Authentication Type ............................................................................................................................................20 Fragment Threshold ...................................................................................................................... ...
... Authentication Type ............................................................................................................................................20 Fragment Threshold ...................................................................................................................... ...
Securing Cognitive Wireless Sensor Networks: A Survey Linköping University Post Print
... power, carrier frequency, channel coding schemes, and constellation size, a wider variety of data rates can be achieved, especially when CWSNs operate on software-defined radios. This can improve device energy efficiency, network lifetime, and communication reliability. The adoption of CR technology ...
... power, carrier frequency, channel coding schemes, and constellation size, a wider variety of data rates can be achieved, especially when CWSNs operate on software-defined radios. This can improve device energy efficiency, network lifetime, and communication reliability. The adoption of CR technology ...
3rd Edition: Chapter 1
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
Technology Background
... various new applications for decades. Recently wire-based networks have got a competitor from wireless networking technologies. The wireless networks have various advantages over wired networks, and therefore have been the subject for enormous amount of research. First of all, wireless networking me ...
... various new applications for decades. Recently wire-based networks have got a competitor from wireless networking technologies. The wireless networks have various advantages over wired networks, and therefore have been the subject for enormous amount of research. First of all, wireless networking me ...
Chapter1_sept_20_05
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
... Chapter 1: roadmap 1.1 What is the Internet? 1.2 Network edge 1.3 Network core 1.4 Network access and physical media 1.5 Internet structure and ISPs 1.6 Delay & loss in packet-switched networks 1.7 Protocol layers, service models 1.8 History Introduction ...
Uses of Computer Communications
... Uses of Computer Communications Text messaging allows users to send and receive short text messages on a phone or other mobile device or computer Picture messaging allows users to send pictures and sound files Video messaging allows users to send short video clips Wireless instant messaging allows ...
... Uses of Computer Communications Text messaging allows users to send and receive short text messages on a phone or other mobile device or computer Picture messaging allows users to send pictures and sound files Video messaging allows users to send short video clips Wireless instant messaging allows ...
4th Edition: Chapter 1 - Computer Science & Engineering
... institutional link to ISP (Internet) institutional router Ethernet switch ...
... institutional link to ISP (Internet) institutional router Ethernet switch ...
Mobile IPv6 and Firewalls: Problem Statement
... Most firewalls available for IPv6 networks do not support Mobile IPv6. Since most networks in the current business environment deploy firewalls, this may prevent future large-scale deployment of the Mobile IPv6 protocol. ...
... Most firewalls available for IPv6 networks do not support Mobile IPv6. Since most networks in the current business environment deploy firewalls, this may prevent future large-scale deployment of the Mobile IPv6 protocol. ...
TCP in wireless environments: problems and solutions
... increase multiplicative decrease congestion control of the standard TCP protocol reaches the steady state, which reflects the protocol’s efficiency in terms of throughput and link utilization. However, this assumption does not hold when the end-to-end path also includes wireless links. Factors such ...
... increase multiplicative decrease congestion control of the standard TCP protocol reaches the steady state, which reflects the protocol’s efficiency in terms of throughput and link utilization. However, this assumption does not hold when the end-to-end path also includes wireless links. Factors such ...
Week_Ten_Network
... PPP (Point-to-Point Protocol) is a protocol for communication between two computers using a serial interface, typically a personal computer connected by phone line to a server. For example, your Internet server provider may provide you with a PPP connection so that the provider's server can respond ...
... PPP (Point-to-Point Protocol) is a protocol for communication between two computers using a serial interface, typically a personal computer connected by phone line to a server. For example, your Internet server provider may provide you with a PPP connection so that the provider's server can respond ...
Firewall - Gadjah Mada University
... – Allows many machines to use the appear to come from the same IP address – Connections can only be initiated by internal host ...
... – Allows many machines to use the appear to come from the same IP address – Connections can only be initiated by internal host ...
Network+ Guide to Networks 6th Edition
... – Facilitates communication between software applications and lower-layer network services – Network interprets application request – Application interprets data sent from network ...
... – Facilitates communication between software applications and lower-layer network services – Network interprets application request – Application interprets data sent from network ...
Android Implementation of an Auto-Configuration Method for
... routing protocol OLSR (Clausen and Baccelli, 2005), which are oriented to the assignment of IP addresses. ...
... routing protocol OLSR (Clausen and Baccelli, 2005), which are oriented to the assignment of IP addresses. ...
ECx Ethernet Control Guide.book
... • A tablet or other mobile device with the qualified VNC client software installed • For wireless communication with ECx, a router or wireless access point (WAP) • Ethernet cable for connecting to your client computer, wireless router, or wireless access point device • A USB flash drive with at leas ...
... • A tablet or other mobile device with the qualified VNC client software installed • For wireless communication with ECx, a router or wireless access point (WAP) • Ethernet cable for connecting to your client computer, wireless router, or wireless access point device • A USB flash drive with at leas ...
PDF Version
... tion model, consisting of the source, destination, intermediate routers, and congestors, is illustrated in Fig. 2. The source sends a continuous stream of data to the destination through the simulated ad hoc network, which consists of a fixed number of routers connected in a chain. A congestor is co ...
... tion model, consisting of the source, destination, intermediate routers, and congestors, is illustrated in Fig. 2. The source sends a continuous stream of data to the destination through the simulated ad hoc network, which consists of a fixed number of routers connected in a chain. A congestor is co ...
Wireless Application Protocol (wap)
... – designed for computers with “high” performance, color highresolution display, mouse, hard disk – typically, web pages optimized for design, not for communication; ignore end-system characteristics ...
... – designed for computers with “high” performance, color highresolution display, mouse, hard disk – typically, web pages optimized for design, not for communication; ignore end-system characteristics ...
Chapter 1 - Learning Management System
... a. provide the software that performs the functions associated with the physical layer b. provide the software that performs the functions associated with the data link layer c. provide the software that performs the functions associated with the application layer d. provide the software that perfor ...
... a. provide the software that performs the functions associated with the physical layer b. provide the software that performs the functions associated with the data link layer c. provide the software that performs the functions associated with the application layer d. provide the software that perfor ...
Firewall and Proxy Server
... Software requirements-Packet Filtering Firewalls To create a filtering firewall, you don't ...
... Software requirements-Packet Filtering Firewalls To create a filtering firewall, you don't ...
Network Connect - Juniper Networks
... happens wait a minute or two and start NC again. If is still doesn’t work, uninstall and reinstall NC or try to disable and re-enable TCP/IP for the NC connection. Also check out the registry entry according to the Microsoft instruction: http://support.microsoft.com/default.aspx?scid=kb;EN-US;123298 ...
... happens wait a minute or two and start NC again. If is still doesn’t work, uninstall and reinstall NC or try to disable and re-enable TCP/IP for the NC connection. Also check out the registry entry according to the Microsoft instruction: http://support.microsoft.com/default.aspx?scid=kb;EN-US;123298 ...
VoIP over WLAN: voice capacity, admission control, QoS, and MAC
... available components. It shows that the 802.11b can support ten voice connections using voice codec G.711, a 10 ms packetization interval, and silence suppression. A measurement experiment with the voice codec G.711 without silence suppression has been carried out in Reference [7], which indicated t ...
... available components. It shows that the 802.11b can support ten voice connections using voice codec G.711, a 10 ms packetization interval, and silence suppression. A measurement experiment with the voice codec G.711 without silence suppression has been carried out in Reference [7], which indicated t ...
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.