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MPM107 Networking 101

4 Nov
  1. What is a computer network?

A network for computers to pass data on from one to another

  1. Define and explain visually the difference between these different types of networks:
    • LANs (Local Area Networks)
    • Image

A network, which covers a small area (a house)

    • WANs (Wide Area Networks
    • Image

A network, which covers a large area (a university)

    • Internet
    • Image

 “The Internet is a global system of interconnected computer networks that use the standard Internet protocol suite (TCP/IP) to serve several billion users worldwide. It is a network of networks that consists of millions of private, public, academic, business, and government networks, of local to global scope, that are linked by a broad array of electronic, wireless and optical networking technologies.” (Wikipedia)

    • Intranet
    • Image

“An intranet is a computer network that uses Internet Protocol technology to share information, operational systems, or computing services within an organization.” (Wikipedia)

    • MANs (Metropolitan area Networks)

Metropolitan area network. Is a computer network where the nodes interact with each other inside the same metropolitan. A MAN is generally operated by a respective local corporation inside the metropolitan.

    • VPN (Virtual Private Network)

Virtual private network. It “extends a private network across a public network”, such as the Internet. It’s similar to WAN where the network can be accessed across a larger area. It also allows users to connect to a private network even if they are not in close proximity to the network itself, it can be accessed using secure protocols. They can access that private company network using the public Internet network as the medium.

  1. How do these two types of networks differ?
    • Peer-to-peer.

This is a way that computers can connect to one another and send information to each other through either a specific program or the Internet.

    • Server – based.

It’s a similar network system, which peers connect to each other using a centered node for communication. The centralization allows many nodes to connect with each other via requesting permission from the central server.

  1. What is the difference between a client and a server?

The server is a main computer holding information, and the client is sent connections and information from the server when it is necessary.

  1. What is the OSI model?

The OSI model is a way for the computer to format data between various devices. It is almost like a translator with data formatting. (Example formatting information that comes in from a computer to send it to a printer)

  1. Define and visual explain what the following terms mean:
    • Protocols

  Protocol (object-oriented programming), a common means for unrelated objects to communicate with each other

  Routing protocol, a set of rules that determines how routers shall route communications

  AAA protocol, a computer security protocol” (Wikipedia)

    • TCP/IP

“The Transmission Control Protocol (TCP) is one of the core protocols of the Internet protocol suite (IP), and is so common that the entire suite is often called TCP/IP. TCP provides reliable, ordered, error-checked delivery of a stream of octets between programs running on computers connected to a local area network, intranet or the public Internet” (Wikipedia)

    • FTP

“Used to transfer files from one host to another” (Wikipedia)

    • HTTP

Hypertext is structured text that uses logical links (hyperlinks) between nodes containing text. HTTP is the protocol to exchange or transfer hypertext.”  (Wikipedia)

    • Telnet
  1. What is a router?

This is a device that is able to send data, which has been purchased to any device using wifi or Internet. A router could be for one device, multiple device (in a home), or hundreds of device (in a school). It basically covers a field of area to supply Internet connection.

  1. What is a network firewall?

This is a defense mechanism that keeps out unwanted networks coming into the server to leave virus’, pop ups, or bring issues into the network. It is basically a virtual wall, which keeps the unwanted things out.

  1. What is the difference between a web and ftp server?

A web server is capable of hosting webpages to multiple computers but a FTP server or File Transfer Protocol allows computers to share files between one another.

  1. What is an IP address?

This is a specific number given to a computer so it can be identified when it is using the web.

  1. How do you transfer files for a computer to a server? Create a small tutorial to teach us how to do it.

I found this great quick and easy Youtube tutorial, which explains exactly how to transfer files to a server. I think the video is much easier to understand than written instructions because you are able to see exactly how to do it in the video. I also found a second video, since the first video is a few year old, so the second video gives you the option to use Filezilla, and was created this year so it is more up to date.

Works Cited

http://en.wikipedia.org/wiki/Computer_network

http://en.wikipedia.org/wiki/Node_(networking)

http://netforbeginners.about.com/od/h/f/what-is-a-computer-protocol-http.htm

http://en.wikipedia.org/wiki/Transmission_Control_Protocol

http://en.wikipedia.org/wiki/File_Transfer_Protocol

http://en.wikipedia.org/wiki/Hypertext_Transfer_Protocol

http://en.wikipedia.org/wiki/Wide_area_network

http://en.wikipedia.org/wiki/Internet

http://en.wikipedia.org/wiki/Intranet

http://en.wikipedia.org/wiki/Metropolitan_area_network

http://en.wikipedia.org/wiki/Vpn

http://en.wikipedia.org/wiki/Peer-to-peer

http://www.webopedia.com/DidYouKnow/Hardware_Software/2005/router.asp

http://en.wikipedia.org/wiki/Firewall_(computing)

http://www.differencebetween.net/technology/difference-between-client-and-server/

http://support.microsoft.com/kb/103884

https://www.ischool.utexas.edu/~l38613dw/readings/NotesOnInterconnection.html

http://en.wikipedia.org/wiki/Telnet

http://en.wikipedia.org/wiki/Local_area_network

 

MPM107 The Library

4 Nov

The library is a great place to learn new things, gather information, or sometimes a great place to just relax. Although I enjoy going into the library, and finding physical books to use when working on different projects and assignments, the electronic resources that libraries have to offer are amazing. Sometimes it is easier to find a specific article, or item that you may need online, than it is to go into the library. The libraries main online feature is being able to access books and articles online, without having to leave your home. My local library does use the internet and some electronic media sources, but mostly this includes audio books as well as some online versions of books, but they do not have a very big selection of things in other categories. One great thing the Ryerson library offers is not only a wide range of full pdf book documents online, but journals and articles too! Journals and articles can be very helpful, and if you use the RULA search engine properly you can find so many help articles or journals for projects and assignments. I find thing helpful because it is usually easier to read through an article and find key points, as well, it is usually easier to find an article on a topic than a whole book written about it. I have used the RULA electronic media sources a few times. The first time i actually emailed the library and they helped me figure out how to properly use the search engine, since my local library uses a different process. The biggest difference i think is just that my library offers a smaller selection online compared to Ryerosn, and that is why there are so many aspects to searching on the RULA website.