MIDTERMS Flashcards
is a large network of information that is not tied to a single location
Wide area network
can facilitate communication, the sharing of information and much more between device from around the world
wide area network
telecommunications services provided by telecom and long distance carriers that route packets of data between lan in diverse geographical location to form a wan
packet switch services
telecom service provide to business by telecom and long distance carriers
circuit switch services
is an umbrella term describing any service that provides switched connections between a consumer an a provider
circuit switch services
associated with asynchronous transmission mode which is considered to be a high speed switching technology that attempted to overcome speed problems
cell switch services
uses a connection oriented packet switched network
cell switch services
id one through the public switched telephone network which is composed of multiple telephone carriers
dial-up modems
is an always-on internet access method available in areas that have digital cable television
cable modems
has a coaxial connection for connecting the provider’s outlet and an unshielded twisted pair connection for connecting directly to a system
cable modems
guide and direct network data using packets that contain various kinds of data
routers
are responsible for receiving, analyzing, and forwarding data packets among the connected computer networks
routers
provide WIFI connections, and standard ethernet routing. ranging 150ft for indoors and 300ft for outdoor connection
wireless router
used to connect to the internet through telephone and to use voice over the internet technology for providing high-speed internet access
broadband router
they can route data packets within a given network, but cannot route the packets between the networks
core router
specialized router that act as gateways at the network edge that enable connectivity between an enterprise network and an external network
edge router
are pieces of software that allow some router functions to be virtualized in the cloud and delivered as a service
virtual router
provides a layer 2 transport service through the service provider network
point to point topology
is transparent to the customer network, as if there was a direct physical link between two endpoints
point to point topology
ca be used to interconnect a small number of sites and provide route redundancy at a potentially minimal incremental cost
ring topology
a less expensive option is a point-to-multipoint topology also known as___
hub and spoke topology
spoke sites are connected to each other via hub site and the network communication between two spoke always travel through the hub
hub and spoke topology
any site can communicate directly with any other site that is highly redundant and most desirable WAN topology
mesh topology
modified version of the basic hub and spoke topology
tiered topology
constructed with dedicated facilities offers improved over the simple star topology without compromising scalability
tiered topology
useful in large, more complex networks, may be developed in a multi-tiered WAN by using a fully meshed topology for the backbone nodes only
hybrid topology
it performs the physical layer functionality of terminating an incoming physical link to a router
input ports
it performs the data ink layer functionality needed to interoperate with the data link layer functionality on the other side of the incoming link
input ports
it also performs a lookup and forwarding function so that a datagram forwarder into the switching fabric of the router emerges at the appropriate outport port
input ports
control packets are forwarder from the input port to the routing processor
input ports
computes the forwarding table, implements routing protocols, and runs the software to configure and manage the router
routing processor
it also handles any packet whose destination address cannot be found in the forwarding table in the line card
routing processor
connects the router’s input ports to its output ports and is completely contained with the router - a network inside of a network router
switching fabrics
is the first mode a user has access to after logging into the router
user execution mode
allows user to view the system configuration, restart the system, and enter router configuration mode
privileged mode
different configuration like making local database on router by providing username and password, can set enable and secret password etc.
global configuration mode
only configuration of interfaces are done, assigning an IP address to an interface, bringing up the interface are the common tasks done in this mode
router modes
we can enter in this mode when we interrupt boot process of the router
ROMMON mode (ROM monitor)
it is a bootstrap program that initializes the hardware and boots the Cisco IOS software when you power on or reload a router or switch
ROMMON mode
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