Network Classifications Flashcards
IEEE
Institute of Electrical and Electronics Engineers
WPAN
Wireless Personal Area Networks
PAN
Personal area networks
LAN
local area network
local area network
can consist of a few nodes or up to several hundred nodes. However, a LAN is typically confined to a single building.
CAN
Campus Area Network
Campus Area Network
Campus networks are built by connecting LANs to other LANs with an organization’s networking infrastructure.
MAN
Metropolitan Area Network
Metropolitan Area Network
interconnects two or more LANs across a city-wide area.
WAN
Wide Area Network
Wide Area Network
are formed by connecting LANs across a region or around the world.
GAN
Global Area Network
Global Area Network
are an internetwork of WAN networks connecting computers worldwide.
Network Topologies
A topology is a generalized geometric configuration of some class of objects that are joined together.
Bus Topology
is a single electrical circuit to which all devices in the network are connected
Star Topology
individual computers are connected to a central device, such as a hub or a switch.
Star Bus Topology
There is a central hub, or more commonly a central switch, with patch cables branching out to each of the LAN devices. This forms the physical star topology. The signals move across the wires all at the same time, acting as if the system were a single bus topology. Logically the system acts like a bus but looks like a star, and is therefore called a star bus topology.
Ring Topology
is a collection of separate point-to-point links, connected together to form a ring. Each node’s interface has one input and one output connection, so each node is connected via two links.
Star Ring Topology
combines a physical star configuration with a logical ring of information flow. wires run from each node to a central ring wiring concentrator, which IBM called a Multistation Access Unit (MAU). The star ring is a physical star configuration, but information travels from node to node in a logical ring as the MAU forwards each signal out each of its ports in turn.
MAU
Multistation Access Unit
P2P
point-to-point
Point-to-Point Topology
there are two participating nodes on either end of the circuit. These circuits (T1, E1, DSL, switched 56, or dial-up) are often dedicated (configured for the long term) and always available (nailed up) or may be switched and only connected on demand
Mesh Topologies
provides fully redundant communications between multiple connected sites. This offers some level of redundancy to sites that have multiple connections. There are two types of mesh topologies, partial mesh and full mesh.
Partial Mesh Topology
When a network does not need full redundancy
Fully Meshed Topology
point-to-point links directly connect every site to every other site.
Cloud Topology
epresents a public mesh network of switching devices, often owned by a common carrier or telephone company.
PSTN
Public Switched Telephone Network
UTP
unshielded twisted-pair
What type of device is used with unshielded twisted-pair (UTP) cable to create a star network configuration?
Hub
A hub may be used to provide connectivity in both a star and star ring network. True or False?
True
A group of computers are connected in a multistory building. This would be considered what type of network?
A local area network (LAN)
Which of the following best describes a local area network (LAN)?
It is confined to a single building or a single floor of a building
A group of computers in the south side of a city are connected to another group of computers downtown. This would be considered what type of network?
A metropolitan area network (MAN).
Which of the following best describes a metropolitan area network (MAN)?
It spans a single city and uses local telephone company facilities for connectivity
An organization may use more than one type of topology in a single network. True or False?
True
