Local Area network
Question Answer
Define nodes. Any device on a network that can send
and/or receive data
Network hardware Nodessuch as Personal Computers (PC)s,
includes. workstations, servers, printers, mobile devices
Network Interface Cards (NIC) to which
network media (such as cables) connect
Connecting devicessuch as switches, repeaters,
bridges, routers
Bounded Connection Media
What is a bounded Cables are known as bounded media and
connection media? they are widely used as a network
transmission medium
What are exapmles of Twisted pair and fibre optic cable are
bounded media? examples ofbounded media
True of False; In True
abounded medium,
signals are confined to
themediumand do not
leave it.
What is UTP and STP? Unshielded Twisted-Pair (UTP) and
Shielded Twisted-Pair (STP) cable
Discribe twisted pair Twisted-pair cable consists of two
cables. insulated strands of copper wire twisted
around each other.
Advantages of Twisted 1) The cost of cabling is relatively low.
Pair 2) It is easy to installwith simple computer
connections
h of theDisadvantages
cable cannot be
of Twisted
greater than 100m.
Pair
Name 4 Weaknesses of 1) Eavesdropping
Copper Cables 2) Attemuation
3) Crosstalk
4) Electro-Magnetic Interference
Explain eavesdropping Signals traveling along copper cables can
be intercepted by outsiders.
Explain attenuation Copper cables lose signal strength over a
distance. They can carry signals only a
fraction of the distance of fibre optic cables
Explain Crosstalk Crosstalk is defined as signals from one-
line interfering with signals from another
line. UTP is particularly susceptible to
crosstalk, but the greater the number of
twists per meter of cable, the more
, effective theprotection against crosstalk
Explain Electro-Magnetic Nearby signals from other sources such as
Interference (EMI) machinery can corrupt the signals
traveling in copper cables.
Discribe fibre optic cables A fibre-optic cable consists of an extremely
thin cylinder of glass, called the core,
surrounded by the cladding. The fibres are
sometimes made of plastic. Plastic is easier
to install, but it isunable to carry the light
pulses for the long distances that glass
cancarry them over
How does firbre optic In fibre-optic cable, optical fibres carry
cables transmit data? digital data signals in the form of pulses of
light
Advantages of Fibre-Optic Data can be transmitted at very high
Cables speeds
Data can be transmittedover long distances
securely.
Disadvantages of Fibre- They are more expensive that UPT cables.
Optic Cables You need the expertise available to
properly install and connect to devices.
Unbounded Connection Media
Describe Unbounded Unboundedmedia connect the source and
Connection Media. destination devices withoutany
physicalconnection.Infrared, Bluetooth,
microwave and radio waves are examples
ofunbounded media.
Name 4 thing Wireless 1) radio communication;
communications can 2) microwave communication;
consist of. 3) light, visible and infrared (IR) such as
remote controls;
4) electromagnetic induction provides short
range communication and power
What is Bluetooth Bluetoothis a wirelesstechnology standard
for sending data over short distances,
using short-wavelength radio transmissions
from 2400–2480 MHzSignals are sent from
fixed and mobile devices, creating Personal
Area Networks(PANs) with high levels of
security.
BLE Bluetooth Low Energy
The advantages of it canhandle both data and voice
Bluetooth wireless transmissions, at the same time.
technology
NFC Near Field Communication
What is the function of Near Field Communication(NFC) provides
Question Answer
Define nodes. Any device on a network that can send
and/or receive data
Network hardware Nodessuch as Personal Computers (PC)s,
includes. workstations, servers, printers, mobile devices
Network Interface Cards (NIC) to which
network media (such as cables) connect
Connecting devicessuch as switches, repeaters,
bridges, routers
Bounded Connection Media
What is a bounded Cables are known as bounded media and
connection media? they are widely used as a network
transmission medium
What are exapmles of Twisted pair and fibre optic cable are
bounded media? examples ofbounded media
True of False; In True
abounded medium,
signals are confined to
themediumand do not
leave it.
What is UTP and STP? Unshielded Twisted-Pair (UTP) and
Shielded Twisted-Pair (STP) cable
Discribe twisted pair Twisted-pair cable consists of two
cables. insulated strands of copper wire twisted
around each other.
Advantages of Twisted 1) The cost of cabling is relatively low.
Pair 2) It is easy to installwith simple computer
connections
h of theDisadvantages
cable cannot be
of Twisted
greater than 100m.
Pair
Name 4 Weaknesses of 1) Eavesdropping
Copper Cables 2) Attemuation
3) Crosstalk
4) Electro-Magnetic Interference
Explain eavesdropping Signals traveling along copper cables can
be intercepted by outsiders.
Explain attenuation Copper cables lose signal strength over a
distance. They can carry signals only a
fraction of the distance of fibre optic cables
Explain Crosstalk Crosstalk is defined as signals from one-
line interfering with signals from another
line. UTP is particularly susceptible to
crosstalk, but the greater the number of
twists per meter of cable, the more
, effective theprotection against crosstalk
Explain Electro-Magnetic Nearby signals from other sources such as
Interference (EMI) machinery can corrupt the signals
traveling in copper cables.
Discribe fibre optic cables A fibre-optic cable consists of an extremely
thin cylinder of glass, called the core,
surrounded by the cladding. The fibres are
sometimes made of plastic. Plastic is easier
to install, but it isunable to carry the light
pulses for the long distances that glass
cancarry them over
How does firbre optic In fibre-optic cable, optical fibres carry
cables transmit data? digital data signals in the form of pulses of
light
Advantages of Fibre-Optic Data can be transmitted at very high
Cables speeds
Data can be transmittedover long distances
securely.
Disadvantages of Fibre- They are more expensive that UPT cables.
Optic Cables You need the expertise available to
properly install and connect to devices.
Unbounded Connection Media
Describe Unbounded Unboundedmedia connect the source and
Connection Media. destination devices withoutany
physicalconnection.Infrared, Bluetooth,
microwave and radio waves are examples
ofunbounded media.
Name 4 thing Wireless 1) radio communication;
communications can 2) microwave communication;
consist of. 3) light, visible and infrared (IR) such as
remote controls;
4) electromagnetic induction provides short
range communication and power
What is Bluetooth Bluetoothis a wirelesstechnology standard
for sending data over short distances,
using short-wavelength radio transmissions
from 2400–2480 MHzSignals are sent from
fixed and mobile devices, creating Personal
Area Networks(PANs) with high levels of
security.
BLE Bluetooth Low Energy
The advantages of it canhandle both data and voice
Bluetooth wireless transmissions, at the same time.
technology
NFC Near Field Communication
What is the function of Near Field Communication(NFC) provides
