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In this paper, the performance of IPv4 and IPv6 are compared using Windows Vista and the TCP throughput results are compared with Windows XP. The results indicated that Windows Vista can provide higher bandwidth than XP for both IPv4 and IPv6. Windows vista performs comparatively better on IPv4 than IPv6.
The impact of WPA2 security on performance of IPv4 and IPv6 on two client-server wireless 802.1 In networks implementing Windows Vista-Windows Server 2008 and Windows XP -Windows Server 2008 is investigated. Results indicated that for XP enabling WPA2 results in an average of approximately 7.07% less throughput than open systems for IPv4 and 5.42% less throughput for IPv6. Enabling WPA2 on Vista results...
In this paper, the performance of IPv4 and IPv6 are compared using Windows Vista and the UDP (User Datagram Protocol) throughput results are compared with Windows XP in a peer-peer environment. The results indicated that the UDP bandwidth using Windows Vista and fast Ethernet for IPv4 ranged between 26.5 and 85.6 Mbps and between 24 and 84.6 Mbps for IPv6. Windows XP bandwidth ranged from 21.8 and...
This research paper examines the standing of wireless technology in higher education institutes located in a number of regions around the world. In this paper 33 higher education institutes have been surveyed to find out the current level of wireless development. Institutes were surveyed on wireless services provided, the number access points, the coverage area, level of growth, the impact of installing...
Virtual private network (VPN) is a technology that provides secure communication for data as it transits through insecure regions of information technology infrastructure. With prolific development of the Internet, businesses nowadays implement VPN tunnels using different protocols that guarantee data authenticity and security between multiple sites connected using public telecommunication infrastructure...
Internet is a ubiquitous part of businesses and individuals worldwide. With its popularity on an incline, operating system vendors are developing end-systems that support the new version of Internet Protocol (IPv6) that eventually will replace IPv4. The new version resolves issues that IPv4 has and takes the Internet into the 21st century. Performance of the IP stack and how it associates with operating...
In this paper, using discrete event stochastic simulation by batch-means, new results have been obtained by comparing the tele-traffic models commonly used to analyze the capacity of the CDMA system. The traffic capacity of independent M/M/infin cells and homogeneous system of cells are compared. The results indicate that at low blocking probabilities (up to 3% if shadowing included and up to 5% without...
This paper investigates the impact of various encryption techniques (WEP-64, WEP-128 and WPA) on performance of wireless LANs for Windows operating systems (Windows Server 2003, Windows XP and Windows Vista) and for both TCP and UDP protocols. The parameters considered are throughput and response time. The results indicate that security mechanism does influence the wireless performance and different...
This paper investigates the impact of various encryption techniques (WEP-64, WEP-128 and WPA) on performance of wireless local area network for Windows operating systems (Windows Server 2003, Windows XP and Windows Vista) and for both TCP and UDP protocols. The parameters considered are throughput and response time. The results indicate that security mechanism does influence the wireless performance...
In this paper, using discrete event stochastic simulation by batch-means, new results have been obtained by analysing the sensitivity of CDMA blocking probability for a given traffic load against various number of calls per batch and confidence intervals. It is found that for the system under study one long simulation with one million call arrivals produce approximately 99% confidence in results while...
In this paper the effect of propagation parameters on neighbouring cells interference is investigated using a simulation and modelling technique. The results of this investigation indicate the extent that other-cells interference increases with increasing shadowing parameter but decreases with increasing distance exponent It is concluded that the distance exponent has the dominant effect on other-cells...
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