ITEC45 (Sir Rollo) Flashcards
is a set of connected devices.
is a set of nodes that are interconnected to permit the exchange of information.
is a collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to one another to allow the sharing of data.
Network
refers to the way in which the end points, or stations, attached to the network are interconnected.
refers to the shape of a network, or the network’s layout
may define both physical and logical aspect of the network.
Topology
is either a redistribution point or a communication endpoint.
any system or device connected to a network is also called a node.
Node
is the arrangement with which computer systems or network devices are connected to each other.
Network Topology
is the simplest topology that connects two nodes directly together with a common link.
networks contains exactly two hosts such as computer, switches, routers, or servers connected back to back using a single piece of cable.
Often, the receiving end of one host is connected to sending end of the other and vice versa.
Point to Point Topology
all devices are connected to a central cable, called the ___ or backbone
Each end of the cable is terminated using a special terminator.
all devices share single communication line or cable.
there is a main cable and all the devices are connected to this main cable through drop lines.
There is a device called tap that connects the drop line to the main cable.
if one workstation goes faulty all workstations may be affected as all workstations share the same cable for the sending and receiving of information.
Bus Topology
is a connector that either splices into the main cable or punctures the sheathing of a cable to create a contact with the metallic core.
Tap
is a connection running between the device and the main cable.
Drop line
uses a central hub through which, all components are connected.
is not expensive as to connect one more host, only one cable is required and configuration is simple.
Star Topology
is the host computer, and at the end of each connection is a terminal.
Central Hub
all devices are connected to one another in the shape of a closed loop, so that each device is connected directly to two other devices, one on either side of it
When one host tries to communicate or send message to a host which is not adjacent to it, the data travels through all intermediate hosts.
This structure forms a ring
Ring Topology
In this type of topology, a host is connected to one or multiple hosts.
This topology has hosts in point-to-point connection with every other host or may also have hosts which are in point-to-point connection with few hosts only.
Mesh Topology
All hosts have a point-to-point connection to every other host in the network. Thus for every new host n(n-1)/2 connections are required. It provides the most reliable network structure among all network topologies.
Full Mesh
Not all hosts have point-to-point connection to every other host. Hosts connect to each other in some arbitrarily fashion. This topology exists where we need to provide reliability to some hosts out of all.
Partially Mesh
Also known as Hierarchical Topology.
this is the most common form of network topology in use presently.
is a LAN topology in which only one route exists between any two nodes on the network.
is a hybrid topology, it is similar to the star topology but the nodes are connected to the secondary hub, which in turn is connected to the central hub
Tree Topology
