Wireless Ethernet: A Viable Business Opportunity for the IT Consultant by Joshua Feinberg
During 2002, many vendors were rushing to market 802.11a (up to 54Mpbs) wireless Ethernet products that were supposed to be the next wave in wireless networking. However, at the same time, an “in-progress” standard called 802.11g may supplant both the original 802.11b and newer 802.11a standards. ... The Bottom Line about Wireless Ethernet While wireless Ethernet will likely overtake wired Ethernet (Category 5) as the dominant small business networking standard at some point in the future, the “when” and “how” is still very unclear.

Cisco CCNA Certification: An Illustrated Guide To Ethernet CSMA/CD by Chris Bryant
When you're studying for your CCNA exams, you're going to study the theory of technologies we basically take for granted in networking. CSMA/CD is one of those technologies. It works beautifully and you don't even have to configure it. But to be an effective network troubleshooter (and to pass... If a collision is heard, both of the senders will send a jam signal over the Ethernet. ... This jam signal indicates to all other devices on the Ethernet segment that there has been a collision, and they should not send data onto the wire.

PC Purchases: The Benefits of Adding Network Cards by Joshua Feinberg
Network cards are mandatory additions to PC purchases now that even the smallest offices now have broadband Internet access and peer-to-peer networking. Even if the cost of later purchasing Ethernet adapters a la carte were the same as the bundled prices, your clients still should get Ethernet... If this happens after the warranty period has ended, you usually can disable the onboard Ethernet adapter and install a third-party Ethernet adapter in an available PCI or PCMCIA expansion slot. ... Note About Ethernet Adaptors In many cases, Ethernet adapters are being built into the PC...

Network Cabling: Available Options by Joshua Feinberg
As their IT consultant, your small business prospects and clients will need you to explain the different network cabling options available to them. Traditional Wired Ethernet (Category 5) Until very recently, Category 5 data cabling was the de facto standard for both enterprise and small... Wireless Ethernet Based on 802.11b (11Mbps) 802.11b wireless is also a relatively mature standard that provides up to 11Mbps Ethernet service. ... The Ethernet Hub and Network Card To string together a traditional wired Ethernet network based on Category 5 network cabling, your clients will simply...

Wireless Access Points: Power over Ethernet by Eric Meyer
PoE gives you the freedom of installing wireless access points anywhere a ethernet cable will go. Before power over Ethernet was available a wireless access point always had to be near a power outlet to give it power. This meant more money and usually bad placement. ... Gigabit Ethernet uses all the wires in an Ethernet cable thus PoE is not available for Gigabit Ethernet. ... PoE uses the two unused wireless in a Ethernet cable to run the power. ... If you are using a Fat access point which is located near a common power outlet or easily in reach of employees all it takes is a paper clip...

Networking Terms: Educating the Client by Joshua Feinberg
It is very important to educate your small business prospects and clients on key small business networking terms and buzzwords. After all, in order to "win them over," you need to be speaking the same language. In fact, you may even want to prepare a "cheat sheet", based on the below... • 802.11b – most mature of the widely available wireless Ethernet standards that allows for data networking transmission at up to 11Mbps; ; also commonly referred to as a “WiFi”; operates in the 2.4Ghz range • 802.11g – newest in-progress wireless Ethernet standard that promises to allow for data...

Home Wireless Networks by Elizabeth Morgan
A home wireless network can be set up using wireless local area network (WLAN) devices. A wireless LAN has a wireless interface that enables wireless communication amongst the computers and peripheral devices that are a part of the LAN. A wireless LAN has limited range and is designed to be used... The IEEE-802.11 (Wi-Fi) standard supports 1 Mbps data rate and several choices of physical medium such as spread spectrum and infrared. ... Though a wireless router contains a built in access point, one may have to use a wireless access point if an existing Ethernet home network is extended.

Synchronised Digital Clock Systems by David Evans
Synchronised digital clocks allow a number of individual time clock displays to show identical accurate time. Individual stand-alone digital clocks each drift at different rates eventually all display differing times. This article discusses the methods utilised to achieve synchronised digital... The devices are powered over standard CAT5 cabling using Power-over-Ethernet (IEEE 802.af), the same Ethernet standard as Voice-over-IP telephones. ... Ethernet NTP Digital Clock Systems Ethernet NTP digital wall clock time displays utilise NTP over Ethernet to display a continuously accurate...

Coaxial Cable - Definition and Uses for Communication by Kundan Upadhyaya
Coaxial cable is defined as two concentric wires, cylindrical in shape, separated by a dielectric of some type. One wire is the center conductor and the other is the outer conductor. A protective jacket covers these conductors. The protective jacket is then covered by an outer protective armor. ... 50 ohms cable is used in radio transmitter antenna connections, many measurement devices and in data communications (Ethernet). ... It is possible to build cables at other impedances, but those mentioned earlier are the standard ones that are easy to get.

Understanding Your PC Cables And Connection Types by Rich Fuller
The beginning A classification for networks: 1. Peer-to-peer networks; 2. Server-based networks. At least two computers form a peer-to-peer network. In a peer-to-peer network there are no dedicated servers, and the there is no hierarchy between computers – all the computers are equal. ... • 10Base2 refers to an Ethernet network that uses the thin coaxial cable. ... This architecture uses the BUS topology and can be used to transmit data at 10Mbps and 100Mbps, because of the 100 BaseXEthernet (or, usually named Fast Ethernet).