module 6 Flashcards
what is a computer network
two or more computers are connected
what are the advantages of a computer network
facilitate sharing
high-speed connection
peripheral devices such as printer file
what are the disadvantages of a computer network
network administration
installing new devices
monitoring perofmrance
updating and installing software
network security
what is a node
a device connected to a network
what is the architecture of a network
the design of said network
what is the WAN
wide area network
what is the HAN
home area network
what is the MAN
metropolitan area network
what is the LAN
land area network
what are the types of transmission cables
dial-up cable
fibre optic cable
coaxial cable
what is the data transfer rate
amount of digital data that is moved from one place to another in a given time
can be viewed as the speed of travel of a given amount of data from one place to another
what is the throughput of data transfer
actual speed of data achieved
compare the throughput of data transfer to the data transfer rate, how can you compare them?
the throughput is always equal and slower than the transfer rate
network adapters
enables node to connect to the network
what is a wireless signal
electromagnetic waves traveling through the air
network navigation devices
control the flow of data on a network
give examples of home networks
P2P
LINUX
Windows
OS X
what do home ethernet networks use to communicate
they use ethernet protocols
WIRELESS 802.11
WIRED802.3
how can you measure the sped of a throuput
can be measured like meters
what is network cabling
networking hardware used to connect one network device to other network devices
connect two or more computers to share printers, scanners etc.
what do network cables use to connect each other in a building
twisted pair or coaxial cable
coaxial cable
two conductor electrical cable
consisting of a center conductor and an outer conductor with an insulating spacer between the two
what are coaxial cable used for
coaxial cables are used for the transmission of Radio Frequency energy.
system offers tight control over electrical impedance
what is the best cable for home users
CAT6
Composed of four pairs of wires that are twisted around each other to reduce electrical interference (coaxial cables)
what is the connector at the end of the CAT6 cable
RJ-45
what are Network-attached storage (NAS) devices
dedicated file storage
enables multiple users and heterogeneous client devices to retrieve data from centralized disk capacity
how do users of a Land area network (LAN) access the shared storage (NAS)
through the ethernet
whats is connecting to a network without owner’s honest called
piggy backing
how to prevent piggybacking
change network name and password
limit network range
turn on security protocols
update drivers
how does the throughput speed decrease?
when you go further and further away from the router
