What kind of throughput can I get with Wi-Fi connections?
Description: What kind of throughput can I get with Wi-Fi connections? This is very much related to the particular version of 802.11 that you are using. The most common version (802.11b) while rated at a bandwidth of 11 Mb/sec, has a maximum throughput (the amount of actual data that can be transferred between two points in […]
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Are wireless printers supported on campus?
Description: Wireless printers are not recommended or supported for departmental use. Inasmuch as wireless IP addressing is DHCP-only (where the “D” stands for “Dynamic”), that presents a major problem for trying to use wireless printers on the campus network. Because of this addressing issue, wireless printers are not designed for the campus workplace environment. Currently wireless […]
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Are wireless and Wi-Fi the same thing?
Description: No, Wi-Fi refers to a specific technology of wireless local area networks based on specifications standardized by the Institute of Electrical and Electronics Engineers (IEEE) standards committee (the 802.11 group). Accordingly, all Wi-Fi products are referred to as 802.11-something. Wireless network technologies encompass a broad range of products, including Wi-Fi, cellular, Wi-Max and more.
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Are Wi-Fi networks secure?
Description: Are Wi-Fi networks secure? No. Next question. Seriously, there are features on the access point and on the wireless client that at a minimum should be used to provide a basic encryption of the data flow and to limit access to authorized users. Even with these features the difference between a wired network connection and […]
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How many simultaneous users can a single access point support?
Description: How many simultaneous users can a single access point support? The number of simultaneous users that an access point can support depends primarily on the amount of data traffic encountered (heavy downloads and uploads vs. light). Bandwidth is shared among users on that access point. Network performance, as gauged by the number of simultaneous users, […]
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What is the range of a typical Wi-Fi access point?
Description: How many access points can I co-locate within the same coverage area? The number of access points that can be co-located within the same coverage area also depends upon the version of 802.11 being used. With 802.11b and .11g, there are 11 separate channels that an access point can be configured to use, but only […]
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Is ‘guest’ wireless network access available on campus?
Description: Is ‘guest’ wireless network access available on campus? Guest network access is specifically for visitors bringing their own device with 802.11 wireless (Wi-Fi) capability to connect from campus to the Internet. Guest access is granted short-term for individuals or groups with legitimate business or academic needs and are sponsored by a University department. The UNC-Guest […]
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How do I use the Wi-Fi (wireless) network at UNC?
Description: For detailed setup instructions, please see our Connecting to the UNC Network – Getting Started document. In order to get connected to the UNC network via Wi-Fi (wireless), your machine must be within a Wi-Fi zone. Access is not available everywhere on the UNC campus. However, many classrooms and campus gathering places are covered. See […]
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Are there any issues with radio interference with other devices and Wi-Fi?
Description: Are there any issues with radio interference with other devices and Wi-Fi? Radio frequency (RF) interference involves the presence of unwanted radio signals that disrupt normal system operations. Because of the way 802.11 works, an interfering RF signal of certain characteristics can appear as a bogus 802.11 station transmitting a packet. This causes legitimate 802.11 […]
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What’s the difference between an inexpensive home access point/wireless router and a production environment access point?
Description: What’s the difference between an inexpensive home access point/wireless router and a production environment access point? A typical 802.11g access point at BestBuy might cost about $70; the typical access point that UNC purchases lists at approximately $1500 installed. What’s the difference besides price? A home environment tends to be a more controlled environment than […]
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