Module 4: Build a simple network Flashcards
what ae 4 considerations that you might take into account when
selecting a network media
some considerations of this are:
- What is the maximum distance a signal can be carried on the media
- What environment is the media being used in
- How much data and at what speed is acceptable
- How much does the media cost for installation
this performs the job of protecting the core and cladding
describe the
buffer
within fibre optic cabling
this is usually made of plastic and helps to prevent leakage of signals and electrical energy
describe the
insulator
witin coaxial cable
describe the
strengthening material
within fibre optic cabling
this surrounds the buffer and is used to prevent any stretching of the cable. This layer is often manufactured using the same material found in bulletproof vests
theses include:
RJ-45 - this type of connector is commonly used in connections between hosts and network devices
RJ-11 - this type of connector is typically used on hardware such as analogue phones and fax machines
what are the two
common types of connectors used to terminate twisted pair cabling
and where are they typically used
some points on this are:
- most commonly used cable type on a Local Area Network (LAN)
- readily available and cheap
- only one layer of defence against Electromagnetic Interference (EMI) being the twisting of pairs of wires
give 3 points about
Unshielded twisted pair (UTP) cabling
which wiring scheme is shown in the image
from pin 1 what are the colour codes for each of the pins of an RJ-45 connector when using the
T568A wiring scheme
where will you typically find fibre optic cable installed
you will find this installed in places that require high speeds such as:
- the backbone of the internet / connections between Internet Service Providers (ISPs)
- large data centres
from pin 1 what are the colour codes for each of the pins of an RJ-45 connector when using the
T568B wiring scheme
which wiring scheme is shown in the image
what is
crosstalk
this is where the electrical impulses from one cable cross over to another cable and causes interference
what are
unlike devices
these are devices that use different pins to transmit and receive data
example
connecting a pc to a switch
give 3 points about
Unshielded twisted pair (UTP) cabling
some points on this are:
- most commonly used cable type on a Local Area Network (LAN)
- readily available and cheap
- only one layer of defence against Electromagnetic Interference (EMI) being the twisting of pairs of wires
this is constucted using:
- core
- cladding
- buffer
- strengthening material
- jacket
from the inside to the outside what are the 5 components that are used to construct a
fibre optic cable
you will find this installed in places that require high speeds such as:
- the backbone of the internet / connections between Internet Service Providers (ISPs)
- large data centres
where will you typically find fibre optic cable installed
how do you create a
crossover cable
A crossover cable is achieved by terminating the wiring scheme T568A on one of the RJ-45 connectors and then on the other end of the cable terminating it with the T568B wiring scheme
what are the two
twisted pair wiring scheme standards provided by the TIA/EIA
known as
these are known as:
- T568A
- T568B
Tracert *ip address*
what is the syntax for traceroute
straight through cabling
is used to connect these type of devices
what type of cabling is used to connect
unlike devices
what type of cable is used to connect
like devices
crossover cable
is used to connect these type of devices
the preferred wiring scheme is
T568A
it is also important that once you have chosen a scheme it is used consistently across your network
of the two twisted pair wiring schemes which is preferred and what is an important note when selecting a scheme
describe the
insulator
witin coaxial cable
this is usually made of plastic and helps to prevent leakage of signals and electrical energy
typically made from PVC and is their to help protect the layers inside from abrasion, moisture, and other contaminants
describe the
jacket
within fibre optic cabling
how does
traceroute
work and when might you need to use it
this works by receiving a message from each router (hop) that the packet travels through. This can be a handy tool to use if you cant get connectivity to a host and you want to find out where the cause of the problem is
what is
twisted pair cabling
this is cabling tyically used by the ethernet standard and is commonly comprised of 4 pairs of wires with each pair being twisted together
what are the theoretical speeds acheivable from twisted pair cabling categories
- cat 3
- cat 5
- cat 5e
these can acheive speeds of
- 10 Mbps
- 100 Mbps
- 1000 Mbps / 1 Gbps
of the two twisted pair wiring schemes which is preferred and what is an important note when selecting a scheme
the preferred wiring scheme is
T568A
it is also important that once you have chosen a scheme it is used consistently across your network
from the inside to the outside what are the 5 components that are used to construct a
fibre optic cable
this is constucted using:
- core
- cladding
- buffer
- strengthening material
- jacket