NET-01-P1 Introduction to Networks Flashcards
Why is Networking necessary?
Communication is an essential characteristic of any society
What are the common types of Networks>
LAN, WAN, SAN, MAN
A wide area network is spread across an unlimited geographical area and connects between multiple LANs.
WAN
defines a small geographical area in which multiple computers and other devices are connected. can be set up in homes and small businesses, and can be managed individually or centrally
LAN
can be designed to use one of two communication methods: Wired or Wireless
LAN
Operating system for Cisco devices
IOS
Is larger than a LAN but smaller than a WAN and managed by a city
MAN
The first network
ARPANET
Devices that connect to a network for communication purposes, such as computers, phones and others.
End devices
based on word medium is a means of transferring data, such as metallic wire, glass or plastic fiber
Media
Devices that transfer messages over the network and facilitate communication between end devices
Intermediary devices
Source or destination devices in a networked system
End devices
allows end devices to interact with other devices over a network
Network Interface Card (NIC)
is a devices with physical ports to which end devices can be connected via Ethernet cables, to create a network
Switch
is the legacy implementation of a switch. It broadcasts data to all connected devices, as opposed to sending information to dedicated destinations
Hub
This is the most common and basic switch in use. It uses MAC addresses to forward information to specific destinations within the network
Layer 2 Switch
performs same operations as a layer 2 switch but can also function as a router if it is configured to do so
Layer 3 switch
is a group of nodes that can hear each other
Collison domains
type pf communication where the sender sends single copy of the date to all devices on the same network segment
Communication
Unshielded twisted-Pair is the most common copper cable in use
UTP (Unshielded twisted-Pair)
Shielded Twisted-Pair are similar to UTP, but have additional protection against EMI and RFI interferences.
STP (Shielded Twisted-Pair)
transmit information using light over long distances with high speed. More expensive
Fiber Media*
A structure of network. A layout of a structure of a network. Represents all the connections between all components in a network
Network Topology
A connection between two computers, networks and other devices
Point to Point
To properly communicate with each other, different devices require protocol
Communicaiton protocols
