...strain the cooling capacity of your data center. The components housed in a medium-sized data center can easily generate enough heat to heat a house in the dead of winter! • So cool you must, • because when network components become hot, they’re pro...

Gigabit Ethernet • Gigabit Ethernet • As workstations and servers migrated from ordinary 10-Mbps Ethernet to 100-Mbps speeds, it became clear that even greater speeds were needed. Gigabit Ethernet was developed for an even faster Ethernet stan...

...Who’s setting it up? • You can buy and set up VPN equipment by yourself. But some service providers have introduced VPN solutions that guarantee certain levels of service. They boast 99% uptime and offer credit reimbursements for outages, ...

...your network stretches. It’s even possible to connect serial devices across the Internet. A terminal server connects the remote serial device to the network, and then another terminal server somewhere else on the network connects to the other serial...

...FDDI connector • comes with a 2.5-mm free-floating ferrule and a fixed shroud to minimise light loss. • The MT-RJ connector • , a small-form RJ-style connector, features a moulded body and uses cleave-and-leave splicing. • The LC connector • , a sma...

...used in the fibre core. It’s primarily used for lighter- capacity or shorter-distance applications. • Multimode fibre • Core Diameter: • 50, 62.5, or 100 microns • Cladding diameter: 125 microns • In contrast, • single-mode fibre cable has a small c...

...a special port on a switch or other network device to convert the port to a copper or fiber interface. These compact transceivers replace the older, bulkier GBIC interface. Although these devices are available in copper, their most common use is t...

...Crosstalk (NEXT). It’s signal interference from one pair that adversely affects another pair on the same end. Crosstalk occurs between adjacent wire pairs (“pair-to-pair NEXT”). In addition, all other pairs in a UTP cable can also contribute t...

...in the mid 1980s when it released its IBM token ring architecture. Physically, a token ring network is wired as a star, with 'hubs' and arms out to each station and the loop going out-and-back through each. • The IEEE ratified the Token ring LAN s...