M7 Flashcards
is a group of computer systems
and other computing hardware devices that are linked
together through communication channels to facilitate
communication and resource-sharing among a wide
range of users
computer network
a collection of computers and devices connected together via
communications devices and transmission media.
network
Networks are commonly categorized based on their
characteristics
connect groups of computers and low-voltage devices together across short distances
(within a building or between a group of two or three buildings in close proximity to
each other) to share information and resources.
Local Area Networks (LAN)
The smallest and most basic type of network
PAN (Personal Area Network
are typically
found in small offices or residences, and are managed by one person or organization
from a single device.
PAN (Personal Area Network
these types of networks don’t require that devices rely on physical cables to connect
to the network.
WLAN (Wireless LAN)
can be spread across
several buildings that are fairly close to each other so users can share resources
CAN (Campus Area Network
span an entire geographic area (typically a town or city, but sometimes a campus).
Ownership and maintenance is handled by either a single person or company (a local
council, a large company, etc.).
MAN (Metropolitan Area Network)
allows computers and lowvoltage devices to be remotely connected to each other over one large network to
communicate even when they’re miles apart.
WAN (Wide Area Network)
they move storage resources away from the network and
place them into their own high-performance network.
SAN (Storage Area Network)
It is
used to explain a relatively local network that is designed to provide high-speed
connection in server-to-server applications (cluster environments)
SAN (Storage Area Network)
can be integrated into structured cabling to overcome
concerns about supporting traditional Ethernet protocols and network applications
such as PoE (Power over Ethernet)
POLAN (Passive Optical LAN)
uses optical splitters to split an optical signal from one strand of single-mode optical
fiber into multiple signals to serve users and devices.
POLAN (Passive Optical LAN)
These types of networks are built and owned by
businesses that want to securely connect its various locations to share computer resources.
EPN (Enterprise Private Network)
lets its users send and receive data as if their devices were connected to the
private network – even if they’re not.
users can access a private network remotely.
VPN (Virtual Private Network)
refers to the layout of the computers and devices in a
communications network.
network topology
The various network topologies
are:
- Bus
- Ring
- Star
- Mesh
- Hybrid
is a network type in which every computer
and network device is connected to single cable
Bus topology
the physical cable that connects the
computers and other devices.
bus
forms a ring connecting all devices with
its exactly two neighboring devices.
ring topology
all the devices are
connected to a single hub through a
cable.
star topology,
is the central node and
all others nodes are connected to the
central node
hub
every device is connected to another
device via particular channel.
mesh topology,
