internet

different type of internet connection..


what is ISP??

short for Internet Service Provider, it refers to a company that provides Internet services, including personal and business access to the Internet. For a monthly fee, the service provider usually provides a software package, username, password and access phone number. Equipped with a modem, you can then log on to the Internet and browse the World Wide Web and USENET, and send and receive e-mail. For broadband access you typically receive the broadband modem hardware or pay a monthly fee for this equipment that is added to your ISP account billing.

In addition to serving individuals, ISPs also serve large companies, providing a direct connection from the company's networks to the Internet. ISPs themselves are connected to one another through Network Access Points (NAPs). ISPs may also be called IAPs (Internet Access Providers).

example ISP is

 ISP: TMNet

Products : Streamyx , UniFi, TM Hotspot

ISP : Time

Product : Time Fibre Home Broadband, Time Broadband

INTERNET ADDRESS

what is web server?

comparison of network

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Comparisons: lan, man & wan

CRITERIA	LAN	MAN	WAN
AREA OF COVERAGE	Network cover limited	A high speed network that	Network cover large geographical
	geographical area such as	connects Local Area Networks	area such a countries,the
	closely positioned group	in a Metropolitan Area	continents or the world
	of buildings network ,	such as a cities or town.
	network at home,
	network inside computer
	laboratory and network in
	office building
NETWORK SIZE	Small size ( in a building)	Larger size	Largest size
		( in a cities or campus)	(different states or countries)
SPEED	Fastest in data transferring	Slower in data transferring	Slowest in data transferring
	and access time	and access time	and access time
COMMUNICATION	- Connected using modems,	Connected using modems,	the connection is made via
DEVICES	hubs, switch , router	hubs, switch , router	satellite communication link
			or via Internet
COST	Less costly setup and	More costly setup and	Costliest setup and
	maintenance	maintenance
Network Ownership	Private - owned, controlled	Private - owned and operated	Not owned up any
	and manage by a	by a single entity such as a	one organization but exist
	single person or organization	government or large	under collective or distributed
		corporation	ownership

network

WHAT IS NETWORK?

A network is a collection of computers and devices connected together via communications devices and transmission media.

WHAT IS communication devices?

A communications device is any type of hardware capable of transmitting data, instructions, and information between a sending device and a receiving device

types of communication devices

Devices	Description
Dial-up Modem	A communications device that can convert digital signals to analog signals and analog signals to digital signals, so that data can travel along an analog telephone line.
Digital Modem (ISDN,DSL, Cable Modem)	A communications device that sends and receives data and information to and from a digital line.
Wireless Modem	Some mobile users have a wireless modem that uses the cell phone network to connect to the Internet wirelessly from a notebook computer, a smart phone, or other mobile device.

Network Card Sometimes called a network interface card, is a communications device that enables a computer or device that does not have built-in networking capability to access a network. Wireless access point A central communications device that allows computers and devices to transfer data wirelessly among themselves or to transfer data wirelessly to a wired network . *Wireless access points have high-quality antennas for optimal signals.
Router A communications device that connects multiple computers or other routers together and transmits data to its correct destination on a network. Switch A connection device similar to a hub but more sophisticated, including functionality that allows it to control and manage data transmissions. Hub A connection device that allows multiple connections to the network.
WHAT IS transmission media?

Materials or substances capable of carrying one or more signals in a communications channel.

1. Physical Transmission Media
Twisted Pair  Cable	•Twisted-pair cable consists of one or more twisted-pair wires bundled together. •Widely used transmission media for network cabling and telephone systems.