Network and Internet 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
Networks are commonly categorized based on their characteristics.
Networks
The arrangement of a network which comprises of nodes and connecting lines via sender and receiver is referred as
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
It transmits the data from one end to another in a single direction. No bi-directional feature is
Bus Toplogy
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
cable. This hub is the central node and
all others nodes are connected to the
central node.
central node. The hub can be
passive in nature i.e. not intelligent
hub such as broadcasting devices, at
the same time the hub can be
intelligent known as
Active Hubs
It has repeaters in them
Active Hub
every device is connected to another
device via particular channel.
Mesh Topology
is a
collection of two or
more topologies
Hybrid Topology
This is a scalable
topology which can be
expanded easily. It is
reliable one but at the
same it is a costly
topology.
Hybrid Topology
is a worldwide collection of networks that
links millions of businesses, government agencies, educational institutions, and individuals
Internet
ARPANET stands for
(Advanced
Research Project Agency Network)
The Internet originated as
ARPANET
oversees research and sets guidelines and standards
The World Wide Web Consortium (W3C)
connects more than 200 universities and 115
companies via a high-speed private network
Internet2
is a business that provides
individuals and organizations access to the Internet free or for a fee
Access Provider
Two types of ISP (Internet Service Provider)
- Regional ISPs
- National ISPs
provide Internet
access to a specific
geographical area
Regional ISP
provide Internet
access in cities and
towns nationwide
National ISP
Has many members
only features
Online Service Provider (OSP)
Popular OSPs include
AOL (America
Online) and MSN
(Microsoft
Online Service Provider (OSP)
Provides wireless
Internet access to
computers and
mobile devices
May require
Wireless Internet
service provider
May require a
wireless modem
Wireless Internet
service provider
is a number that uniquely identifies each
computer or device connected to the Internet
IP Address
is the text version of an IP address
Domain Name
translates the domain name into its
associated IP address
DNS server
Top level domain (TLD)
.com
.org
.edu
.net
consists of a worldwide
collection of electronic documents ( Web pages
The World Wide Web or Web
is a collection of related Web pages and
associated items
Web Site