1. What is the difference between
category 3, 4, and 5 cabling?
- Category 3 is specified up
to 16MHz. They are typically used for voice and
data transmission rates up to and including 10 Mbps,
e.g. IEEE 802.5, 4 Mbps UTP and IEEE 802.3 10 Base-T
- Category 4 is specified up
to 20 MHz. They are typically used for voice and
data transmission rates up to and including 16 Mbps,
e.g. IEEE 802.5, 4/16 Mbps UTP.
- Category 5 is specified up
to 100 MHz. They are typically used for voice and
data transmission rates up to and including 100MBps,
2. What is a crossover cable?
- A crossover cable is a segment
of Category 5 cable that crosses over pins 1,2/3,6.
This cable is normally used to connect 2 PCs without
the use of a hub, or when cascading 2 hubs without
the use of an uplink port.
3. What is the difference between
a T568-A wiring scheme and a T568-B wiring scheme?
- The only difference between
the two is the actual wiring of the connector or
4. Do you need a special tool
when working with your 110 Type patch panels and jacks.
- Yes, you need to use a 110
Type impact tool in order to properly terminate
5. What is an AUI?
- Attachment Unit Interface (AUI)
is most commonly used with reference to the 15 pin
D type connector and the cables used to connect
single and multiple channel equipment to an Ethernet
6. What is Crosstalk?
- Crosstalk is the unwanted introduction
of signals from one channel or pair to another.
7. What is USOC?
- Uniform Service Ordering Code
(USOC). Terms originally used by the telephone company
to specify installation of a standard modular jack
other than the RJ11W or RJ11C. More recently refers
to a modular standard (tip/ring sequence).
- Energy generated by outside
sources, such as lighting systems and electric motors,
which is received by copper data/voice cable and
interferes with transmission.
9. Can you
use telephone patch cords to connect a LAN?
- It is not recommended for someone
to use telephone cords in order to connect a LAN.
Telephone cords are designed to work with low speed
applications such as voice transmission.
10. Do you need a hub if using
coaxial cable on a LAN?
- No, a hub is not needed when
you are using coaxial cable. You can directly connect
each computer by using coaxial cable, but you must
put terminators on each end of the cable.
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