Storyboard

How To Play Nice

A protocol is an agreed method of completing an activity. For example there are protocols for how to greet someone. Greetings might include a kiss on the cheek, a kiss on both cheeks, a hand shake or a hug. How do we know which is appropriate in a particular circumstance, for example how would you greet a;

·         Casual acquaintance - handshake

·         Your best friend - hug

·         Your Grandma - kiss

·         An old friend you have not seen for a long time - hug

In some ways computer systems are the same, communication between them relies upon agreed methods. These methods are called communication protocols.

The list below has some of the protocols that we have discussed before. Give an example of where they would be used.

·         TCP/IP

used for the Internet and other similar networks

·         http

data transfer protocol used on the World Wide Web.

·         simple mail transfer protocol (smtp)

sending and recieving e-mail messages across the internet

·         file transfer protocol  (FTP)
information transfer between devices

·         html
on webpages

·         xml

representation of arbitrary data structures

Internet Addresses

1.    What is a URL?

Uniform (or universal) resource locator, the address of a World Wide Web page.

2.    What is an IP address and how is it related to a URL?

"internet protocol address", is a unique identifying number given to every single computer on the internet. Like a car license plate, an IP address is a special serial number used for identification.

Both the IP address and domain name URL can be used to connect to the same web server.
http://netforbeginners.about.com/od/i/f/ip_address.htm 

3.    Given our school website's URL is http://www.mcauley.nsw.edu.au, what is our domain name and what protocol do you need to use to access the site?
domain name - mcauley.nsw.edu.au

protocol - http - Hypertext Transfer (or Transport) Protocol, the data transfer protocol used on the World Wide Web.

4.    In the context of an IP address, what is an octet?

Smart Phone Tour Evaluation

1.       Technology used in creating the smart phone tour. List all hardware and software needed to implement the project. Briefly outline how each technology was used.

HARDWARE

Camera – to take photos

Mobile phone – to access the QR reader app

Computer – to create and edit WebPages

Colour printer – to print out posters

Router & internet connection – to be able to create & edit the websites & to make QR codes

Local Area Network (LAN) –

USB – To transfer images & audio

SOFTWARE

File transfer application

Image software – resize and edit the images (cropping and adding arrows)

QR stuff website – to generate QR codes

QR reader application – to be able to

Google Docs – online collaboration tool for planning

Google Sites – hosting the websites

Voice recorder -

2.       Constraints and considerations. To make the tour a hassle free and pleasurable experience for parents, what did we need to consider when designing the tour; think of speed, usability and cost.

Lack of TIME

Internet connection speed

Needed to create a good user experience – load in around 10 seconds.

Small/compressed file format – JPEG – limit the resolution – 400 x 350

Free QR reader

Free hosting service – Google sited

3.       Your role(s) in the group.

I created 3 websites, but only finished one due to a lack of time & other commitments.

I also created 5 QR codes.

4.       Problems you encountered and solutions you created.

Internet connectivity – work on the project at another time

Users did not have to QR reader on their phones – instructions & assistance

500 photos to organise – sorted into folders

Collaboration & status of each website – Shared document to organise

Lack of time – edit permission given to teachers so that last minute changes could be made

Key Terms

1. Define the term - Protocol

The established code of procedure or behavior in any group, organization, or situation.

    2. What are the following protocols used for?

TCP/IP - The Internet Protocol Suite is the set of communications protocols used for the Internet and other similar networks

http - Hypertext Transfer (or Transport) Protocol, the data transfer protocol used on the World Wide Web.

smtp - Simple mail transfer protocol, a data transmission format used to send and receive e-mail

pop  - For wireless, POPs generally refers to the number of people in a specific area where wireless services are available (the population).

FTP - File transfer protocol, a standard for the exchange of program and data files across a network

3. What does GUI stand for? What was used before GUI?

Graphical user interface

      4. There are two methods of data transmission – serial and parallel. Explain the difference between them.

     5.Define the term “URL”. Explain the components that make up the url.

Uniform (or universal) resource locator, the address of a World Wide Web page.

A scheme. The scheme identifies the protocol to be used to access the resource on the Internet. It can be HTTP (without SSL) or HTTPS (with SSL).

A host. The host name identifies the host that holds the resource. For example, www.example.com. A server provides services in the name of the host, but there is not a one-to-one mapping between hosts and servers. Host names explains more about host names.

Host names can also be followed by a port number. Port numbers explains more about these. Well-known port numbers for a service are normally omitted from the URL. Most servers use the well-known port numbers for HTTP and HTTPS , so most HTTP URLs omit the port number.

A path. The path identifies the specific resource within the host that the Web client wants to access. For example, /software/htp/cics/index.html.

A query string. If a query string is used, it follows the path component, and provides a string of information that the resource can use for some purpose (for example, as parameters for a search or as data to be processed). The query string is usually a string of name and value pairs, for example, q=bluebird.

http://publib.boulder.ibm.com/infocenter/cicsts/v3r1/index.jsp?topic=%2Fcom.ibm.cics.ts31.doc%2Fdfhtl%2Ftopics%2Fdfhtl_uricomp.htm

     6.In the context of data transmission, what is “error detection”?

    7.Why would error detection be important for the internet

    8.Name and explain one common method of error detection.

    9.What is HTML and explain why it is important

Hypertext Markup Language is a standardized system for tagging text files to achieve font, color, graphic, and hyperlink effects on World Wide Web pages

How Did The Internet Originate?

• How did the internet originate?

• Who were the people most responsible for creating it?

french- cyclades, US Millitary

• What system immediately preceded the internet? What was its purpose?
• What is an IP packet? What is it comprised of?

packet of data contains an ip address of the recipient

• What does TCP stand for? How does TCP deal with lost IP packets

transmission control protocol - make sure that the packets are sent to the right place

• Why do computer people like everything in letters?

makes everything shorter

PROTOCOL -  an agreed way of doing something

mainframe
ARPANET began in 1966

TCP transmission control protocol - breaks up files into packets to send

TCP-IP
transmission contril protocol - internet protocol -  relates to the adress of every computer on the internet

 

http://www.vimeo.com/2696386

http://www.youtube.com/watch?v=7_LPdttKXPc&feature=related

How DNS works

http://www.youtube.com/watch?v=2ZUxoi7YNgs&feature=related