DIFFERENT TYPES OF INTERNET CONNECTION, INTERNET SERVICE PROVIDER AND THE INTERNET ADDRESS

INTERNET CONNECTION

There are two types of internet connection which is Dial-up Connection and Broadband intertnet connection/Direct connection.

                 Dial up connection                        

Dial-up has to dial via a phone to connect and its connect to a modem attached to a computer. The advantages of conventional dial-up is easy to setup and use, include inexpensive hardware. Its also more secure because the user not continually connected to the internet, it is much less likely the hackers will gain access to your computer via internet.
But its also has disadvantage which is slow connection speed. The maximum speed is 56Kbps. The telephone line will be tie up while accessing the internet. Lastly its inconvenience because its have to instruct user’s PC to dial up user’s ISP every time when the user wan to check email or view website.

CHARACTERISTIC OF DIAL-UP CONNECTION.

Conventional Dial-up	ISDN(Integrated Service Digital Network)
Slow but cheaper	Faster but pricey
Ties up phone lines	Doesn’t tie up phone line
Relatively secure from hackers	Used by business and individual

 Direct connection used at many home and small business users connect to the internet via high speed broadband internet.PC is continually connected to the Internet. Direct connections are typically broadband and used in home and office. Because you are always connected, it is  important to protect your computer from hackers

DSL	FTTP	Fixed Wireless	Cellular Radio Network	Cable Internet Service	Wi-Fi	Satellite Internet Service
Broadband delivered over telephone lines	Also known as Broadband over Fiber (BoF)	Uses radio transmission towers rather than satellites	Also known as Mobile wireless	widely used home broadband connection	Data is transmitted through radio waves	A satellite dish communicates with a satellite modem
Must be less than 3 miles from a switching station	Uses fiber-optic cable		Access via mobile phone or device		Currently Wi-Fi for short range, but WiMAX may soon be an option
Transmits over telephone lines but does not tie up the line	Delivers over fiber-optic cabling all the way to the building				Both free and fee-based are available
Fast, direct Internet access via standard telephone line	Provide high-speed Internet access to house and business users.	Provides high-speed Internet connections using a dish-shaped antenna to communicate via radio signals.	Offers high-speed Internet connections to devices with built-in compatible technology/ computers with wireless modems.	Provides high-speed Internet access through    the cable television network via a cable modem.	Provide high-speed Internet connections to compatible or properly equipped wireless computers and device.	Provides high-speed Internet connections via satellite.
Requires DSL modem	Fast but expensive	Expected to use WiMAX				More expensive than cable or DSL
Available in urban areas	Available in limited areas	Not available in all areas				Broadband option for rural areas
Example :- Streamyx without WiFi			Example provider:- Celcom, Maxis, DiGi		Example : Streamyx with WiFi

 ISP(Internet Service Provider)

• A company that provides Internet connections and services to individuals and organizations. 
• Providing and maintaining a connection to the Internet
• Support the hardware and software needed to service that connection
• To protect their site and network from external threats such as viruses, hacker attacks and other illegal activities
• Provide 24-hour customer service and technical support
• Example : 

1. ISP: TMNet
2. Products : Streamyx , UniFi, TM Hotspot
3. ISP : Time
4. Product : Time Fibre Home Broadband, Time Broadband
5. ISP: Packet One Network
6. Products : P1
7. ISP : YTL Communications
8. Product : YES

ISP

INTERNET ADDRESS 

INTERNET ADDRESS

IP ADDRESS

• A number that uniquely identifies each computer or device connected to the Internet.
• IP addresses are also referred to as IP numbers and Internet addresses.
• IP address sometimes is called a dotted decimal number or dotted quad.
• Unique
• Global and standardised
• Essential

IP USAGE 

• A way to find specific server or computer on the internet or a network
• Provide identity to a computer in a network
• Identify for a particular device/machine on a particular network
• Allows transfers of files and e-mail

IP STRUCTURE 

• IP addresses usually consists of four groups of number each separated by a period.
• The number in each group is between 0 and 255.
• It is 32 bit long ,each group is 8 bits long
• Commonly written in decimal.
• Written, for example, 128.35.0.72
• These four sections represent the machine itself and the network it is on
• The network portion is assigned.
• The host section is determined by the network administrator

IP VERSION 

IP ADDRESS

IP Version 4 (IPv4)

IPv4

• IPv4 an address consists of 32 bits which limits the address space to 4294967296 (232) possible unique addresses.
• Version 4 of Internet Protocol, the most widely used version of IP.

IP Version 6 (IPv6)

IPv6

• The address size was increased from 32 to 128 bits or 16 octets.
• Provides the potential for a maximum of 2128, or about 3.403×1038 unique addresses.
• Version 6 of  Internet Protocol, has more capabilities than IPv4, including providing for far more IP address.

DOMAIN NAMES AND IP ADDRESS

1. People prefer to use easy-to-remember names instead of IP addresses 
2. Domain names (a part of the URL) are alphanumeric names for IP addresses.                               e.g., neon.ece.utoronto.ca, www.google.com, ietf.org
3. The domain name system (DNS) is an Internet-wide distributed database that translates between domain names and  IP addresses.
4. IP address and domain name allocation requires central administration to avoid duplication   
5.  Previously administered by U.S. government contract (NSI)