Quotes on Age and Aging

"Age is whatever you think it is. You are as old as you think you are."

Ali, Muhammad

"The only time you really live fully is from thirty to sixty. The young are slaves to dreams; the old servants of regrets. Only the middle-aged have all their five senses in the keeping of their wits."

Allen, Hervey

"To know how to grow old is the master work of wisdom, and one of the most difficult chapters in the great art of living."

Amiel, Henri Frederic

"I'm not interested in age. People who tell me their age are silly. You're as old as you feel."

Arden, Elizabeth

"One's age should be tranquil, as childhood should be playful. Hard work at either extremity of life seems out of place. At midday the sun may burn, and men labor under it; but the morning and evening should be alike calm and cheerful."

Arnold, Thomas

THE INTERNET

The Internet is the worldwide "network of networks" that links millions of computers together via copper wires, fiber-optic cables, wireless connections, and other telecommunications channels. It is a massive network of networks, a networking infrastructure, forming a network in which any computer can communicate with any other computer as long as they are both connected to the Internet. Information that travels over the Internet does so via a variety of languages known as protocols.This publicly accessible network of interconnected computer networks communicate using a set of protocols and standards, the most basic of which are TCP/IP. TCP/IP consists of the Transmission Control Protocol in conjuntion with the Internet Protocol. Other protocols such as DHCP, DNS, FTP, HTTP, IRC, MIME, POP3, SMTP, SSH, TELNET, RTP and many more help hold the whole thing together.
This learning resource will look mostly at the technical aspects of the Internet, but may eventually cover social, economic, historical and other aspects.
A popular way to visualize the complexity of the Internet is to see it as a stack of layers known as the OSI model, short for Open Systems Interconnection model.

OSI Layers:
* Layer 7: Application Layer – the main interface for the user(s) to interact with the application and therefore the network
* Layer 6: Presentation Layer – transforms data to provide a standard interface for the Application layer
* Layer 5: Session Layer – controls the dialogues (sessions) between computers
* Layer 4: Transport Layer – provides transparent transfer of data between end users and machines
* Layer 3: Network Layer – provides the functional and procedural means of transferring variable length data sequences from a source to a destination via one or more networks
* Layer 2: Data Link Layer – provides the functional and procedural means to transfer data between network entities and to detect and possibly correct errors that may occur in the physical layer
* Layer 1: Physical Layer – defines all the electrical and physical specifications for devices and the communications media

INTERNET SPEED

bandwidth

Bandwidth is the the rate of bits of data per second (usually Mbps).

Mbps

Mbps is short for megabits per second which is a measurement of data transfer speed.
is equal to 1,000,000 bits per second.

narrowband

typically 56 kbps A channel to the internet of very low rate. Mainly connections consist of dial up connections. Narrowband connecting technology is inexpensive.

broadband

Typically 5 Mbps High speed connections to the internet. Examples are DSL, ADSL and satellite.
describe a high-capacity, two-way link between an end user and access network suppliers capable of supporting full-motion, interactive video applications

ISP (POP)

An Internet Service Provider (or ISP for short) is a business that provides businesses or consumers with access to the internet.
For example, Shaw Cable and Telus.

INTERNET TRANSFERS

download

To download is to RECEIVE data from a remote or central system. It's the transmission of a file from one computer to another. These systems used to receive from are usually FTP (File Transfer Protocol), web servers, mail servers or other types of systems.

upload

The process of sending data from a system to an server, website or remote system. For example, when you upload assignments to MRC Net storage.