Your company expanded recently to include two new building for a total of three,

Question

Your company expanded recently to include two new building for a total of three, roughly arranged in a triangle with each building about 5000 meters apart. Previously, theres buildings were wired with catergory 3 UTP running 10 BaseT Ethernet. The IT director mandates that your company be among the first to use 1000 Mbps Ethernet to the desktop. Define a comprehensive network architecture that fulfills, the director's requirements and allows for future growth

Is it possible to get a network diagram on Visio else in any format is appreciable . Thank you

Explanation / Answer

Unshielded twisted pair (UTP), or 10BASE-T ethernet, cable is a 4 pair cable which is very similar to telephone cable in both appearance and end connector appearance.

It comes in a variety of grades, with level 1 being the lowest quality and level 5 being the best.

A 10BASE-T transmitter sends two differential voltages, +2.5 V or 2.5 V.

Level 1 and 2 cabling should only be used for voice and low speed transmissions (less than 5 Mbps). Level 3 may be used for data speeds up to 16Mbps, while level 4 can handle speeds up to 20Mbps. The finest cable avaliable, level 5, can handle speeds up to 100Mbps.

A 10BASE-T ethernet network uses a star topology, with each node being connected directly to a hub. The major limitation to this cable is a maximum cable length of 100 meters, and that each node must have its own connection to the hub.

With the addition of large data steams such as real time video and audio, networks have begun to require high transmission speeds. The new ethernet standard established to handle this requirement is called Fast Ethernet, or 100BASE-T. It is defined by IEEE standard 802.3u, which raises the maximum speed from 10 megabits per second to 100 megabits per second. There are three types of Fast Ethernet currently avaliable:
100BASE-TX for use with level 5 UTP cable.
100BASE-FX for use with fiber-optic cable.
100BASE-T4 which has an extra two wires for use with level 3 UTP cable.

100BASE-TX transmitter sends three differential voltages, +1 V, 0 V, or 1 V

Gigabit Ethernet was the next iteration, increasing the speed to 1000 Mbit/s.

802.3z is commonly referred to as 1000BASE-X, where -X refers to either -CX, -SX, -LX, or (non-standard) -ZX.

At least Category 5 cable, with Category 5estrongly recommended copper cabling with four twisted pairs. Each pair is used in both directions simultaneously.

100BASE-TX and 1000BASE-T were both designed to require a minimum of Category 5 cable and also specify a maximum cable length of 100 meters

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