Q01:
Why need different cable media for cabling?
There
are different cables may affect the speed and distance of
networking. For example:
CAT
5 UTP cable:
Four pairs wrapped in a thermal plastic insulator, twisted around
one another and encased in a flame-retardant polymer Maximum
operating frequency: 100 MHz; suitable for token ring, Ethernet,
fast Ethernet, gigabit Ethernet (after mid-1998), and 155-Mbit/s
ATM.
CAT
5e UTP cable:
Same
as Cat 5, but the manufacturing process is refined and the cable is
of a higher grade. Maximum operating frequency: Up to 200 MHz;
suitable for token ring, Ethernet, fast Ethernet, gigabit Ethernet
(after mid-1998), and 155-Mbit/s ATM.
CAT
6 SFTP cable:
Four
pairs wrapped in foil insulators and twisted around one another; an
extra insulating shield; and a flame-retardant polymer jacket.
Maximum operating frequency: 600 MHz; suitable for Ethernet, fast
Ethernet, gigabit Ethernet (after mid-1998), and 155-Mbit/s ATM.
Multimode
fiber:
Glass
cable that transmits data as pulses of light. Maximum operating
frequency is not limited, suitable for all high-speed networking
applications List price: About $400 per 1,000 feet, but connecting
hardware costs are much higher than those of copper counterparts.
Single
Mode fiber:
Similar
to the Multi mode fiber with more longer distance and higher price.
With
various applications, it is required to provide
converter/transceiver for different installations.
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