INTERNET 101
In Internet 101, we learned about the basic background information of the Internet. The internet is what most people use when they get onto the computer, it is helpful to us in several ways. Networking is basically finding ways to get to the internet. In order to learn more about networking, it is essential to know how the internet was made and what it the internet is.
CYBER SAFETY
In this unit we learned that cyber safety is a very important aspect of going on the internet.It is crucial that we know how to go on the network safely and protect our information so we can avoid dangerous people on the internet.
BUILD YOUR OWN NETWORK
In this assignment we were given the opportunity to build our own network plan however we wanted to. We had to make sure to include 5 PC's and 3 laptops plus a wireless printer and a media server. We had to set up the network using
CAREER MASH - PRESENTER FROM DELL ( Dennis Hofmann)
Career Mash is all about what career suits you best. This is a organization that helps teens in finding out what they are most interested in, and what they want to become.Dennis Hofmann visited our school on October 27th 2011. Dennis currently works at Dell Canada and he is a Sales on Marketing Person. When he came to our class he showed us a short video on career mash up to explain to us the idea of mash up and what it means. More information can be found at: www.careermash.ca. He also showed us a power point on which there were some statistics to show us the employment levels in North America and get us started on thinking about our career.
Things I have learned
Networking Theory
What is Computer Networking?: 2 or more nodes that are connected using some type of physical media exchanging information using a common network protocol.
Why Should You Network?
-access to more information
-share peripherals
-share applications
-portability- (centralized file storage e.x. email)
-reduces costs of transportation, time, etc
Networking Basics:
10 basic components needed to nwteork.
-cables
-Network Interface cards/ Network adapter- media interface _wired,wireless,fiber optic)
-Routers- WAN devices used to connect networks together into intranets, extranet, or the internet
-Modems- a device or program that enables a computer to transmit data over cables, telephone lines, etc
-Switches/Hub- hardware device that joins multiple computer to one LAN using a type of media
-Firewalls- protects networks and systems from unauthorized users
-Servers
-Storage
-Desktop/Notebook computers
-Network Software-Peer to Peer (Windows, MAC OS), Client Server (Novell, Linux), Centralized (mainframe, POS System)
Directions of Data Communication
Simplex: 1-way (e.g. P.A. system)
Duplex: 2-way simultaneous (e.g. Phone call)
Half-Duplex: 2-way one at a time (e.g. walkie-talkie)
Types of Media
Fiber Optic-has various connectors, distance between 2-20 km and a transmission speed of 100-1000 Gbps
802.11 wireless-maximum distance of 100 m, and has a transmission speed of 11-400 mbps
CAT 5/5e/6 UTP or STP-RJ-45 connector, maximum distance of 100 m, and has a transmission speed of 100-1000 mbps
There are various other types of media that are used but these three are the one we focused the most in class. Each media can be used to be connected to the internet, fiber optic being the fastest. In my home network design (picture at the top), I used the CAT5e UTP cables to connect my PC's to the switch which connected to the modem, I used 802.11 wireless to connect my laptops to the router, and finally used fiber optic to connect the router to the internet.
Serial Communication
-one bit at a time
Parallel Communication
-more than one bit at a time
Although parallel communication is more than one bit, serial communication can be faster because in parallel, all the bits have to arrive at the same time and to compensate the transmission speed may have to slow down.
Networking Distance
LAN- Local Area Network (in a building)
WAN-Wide Are Network (in a city)
MAN- Metro Area Network (across cities, countries)
I made a LAN on a Google chrome app called Gliffy diagrams and it was actually very simple and not as hard as I thought it was going to be. It had all the netwrokin basics that I listed above except for the network software which wasn't specified.
Internet vs Intranet vs Extranet
Internet- (public WAN) the worldwide, publicly accessable network of interconnected computer network
Intranet- (private LAN) a private computer network
Extranet- (private WAN with secure public access) can be viewed as a part of a company's intranet that's extended to users outside the company
IP (Internet Protocol) Addresses
A protocol is agreed upon set of rules.
-32 bit long- range from 0.0.0.0 to 255.255.255.255
-allow routing of IP packets between networks
-IP defined in layer 3 (network layer) of the OSI Protocol Model
Without IP addresses you wouldn't be able access any websites. URL's allow you to access different IP addressees without memorizing each sequence of numbers for each website.
URL
Uniform Resource Locator
consists of 3 things: 1. network protocol- http://
2. host name/address- domain name (www. website name.com)
3. file/resouce location- directories and file names
What is Computer Networking?: 2 or more nodes that are connected using some type of physical media exchanging information using a common network protocol.
Why Should You Network?
-access to more information
-share peripherals
-share applications
-portability- (centralized file storage e.x. email)
-reduces costs of transportation, time, etc
Networking Basics:
10 basic components needed to nwteork.
-cables
-Network Interface cards/ Network adapter- media interface _wired,wireless,fiber optic)
-Routers- WAN devices used to connect networks together into intranets, extranet, or the internet
-Modems- a device or program that enables a computer to transmit data over cables, telephone lines, etc
-Switches/Hub- hardware device that joins multiple computer to one LAN using a type of media
-Firewalls- protects networks and systems from unauthorized users
-Servers
-Storage
-Desktop/Notebook computers
-Network Software-Peer to Peer (Windows, MAC OS), Client Server (Novell, Linux), Centralized (mainframe, POS System)
Directions of Data Communication
Simplex: 1-way (e.g. P.A. system)
Duplex: 2-way simultaneous (e.g. Phone call)
Half-Duplex: 2-way one at a time (e.g. walkie-talkie)
Types of Media
Fiber Optic-has various connectors, distance between 2-20 km and a transmission speed of 100-1000 Gbps
802.11 wireless-maximum distance of 100 m, and has a transmission speed of 11-400 mbps
CAT 5/5e/6 UTP or STP-RJ-45 connector, maximum distance of 100 m, and has a transmission speed of 100-1000 mbps
There are various other types of media that are used but these three are the one we focused the most in class. Each media can be used to be connected to the internet, fiber optic being the fastest. In my home network design (picture at the top), I used the CAT5e UTP cables to connect my PC's to the switch which connected to the modem, I used 802.11 wireless to connect my laptops to the router, and finally used fiber optic to connect the router to the internet.
Serial Communication
-one bit at a time
Parallel Communication
-more than one bit at a time
Although parallel communication is more than one bit, serial communication can be faster because in parallel, all the bits have to arrive at the same time and to compensate the transmission speed may have to slow down.
Networking Distance
LAN- Local Area Network (in a building)
WAN-Wide Are Network (in a city)
MAN- Metro Area Network (across cities, countries)
I made a LAN on a Google chrome app called Gliffy diagrams and it was actually very simple and not as hard as I thought it was going to be. It had all the netwrokin basics that I listed above except for the network software which wasn't specified.
Internet vs Intranet vs Extranet
Internet- (public WAN) the worldwide, publicly accessable network of interconnected computer network
Intranet- (private LAN) a private computer network
Extranet- (private WAN with secure public access) can be viewed as a part of a company's intranet that's extended to users outside the company
IP (Internet Protocol) Addresses
A protocol is agreed upon set of rules.
-32 bit long- range from 0.0.0.0 to 255.255.255.255
-allow routing of IP packets between networks
-IP defined in layer 3 (network layer) of the OSI Protocol Model
Without IP addresses you wouldn't be able access any websites. URL's allow you to access different IP addressees without memorizing each sequence of numbers for each website.
URL
Uniform Resource Locator
consists of 3 things: 1. network protocol- http://
2. host name/address- domain name (www. website name.com)
3. file/resouce location- directories and file names