Tuesday, 12 May 2009

Internet Addresses Activity


(Speed Test 2)

( Speed Test 1)
1. What is a URL
A URL is basically an internet address consisting of the folllowing things:
-the protocol (http)
-the server name("www.blogger.com")
-the file name ("post-create.g?blogID")
2.What is an IP Address and how is it related to a URL?
Wkipidea Definition: An IP Address (Internet Protocol) is a numerical identification and a logical address that is assigned to device participating in a computer network utilizing the Interenet Protocol for communications between its nodes.

3. Given our school website ....what is our domain name and what protocol do you need to use to access the site?
Domain Name: www.mcauley.nsw.edu.au.
Protocol: IP
4.In the context of an IP address, what is an octets?
The four numbers in an IP address are called octets(which means 8) and each have eight positions when viewed in binary form. Examples:
- 216.27.61.137
-Binary Form:
11011000(octet).00011011.00111101.10001001

Broadband Speed Test
Speed of internet connection using site: http://www.speedtest.net/
Download Speed:
MP3 File ( 5MB)- 1 min
Video Clip (35 MB)- 9 min
Movie (800MB)- 202 min

Upload Speed:
E-mail attachment (1MB)- 15sec
Photo Gallery (8MB)- 2min
Video Clip (35MB)- 8mins
1. What is meant by upload and download speeds
Upload Speed- Refers to the speed per second at which you can upload to the Web. Its the speed at which data is sent from your computer to the internet.
Download speed- Its the speed at which data is sent from the internet to the computer.
2.What are the units used to measure download speeds?
The units are Mb/s
3.Why do different locations offer different download speeds? Hint: “bottleneck”

Sunday, 10 May 2009

IP Addresses


My Computer's IP Address, (Click to viewer larger).
1. What is an octet?
An octet are four numbers in an IP address, they each have eight positions when viewed in binary form.
Note: IP addresses are actually 32 bit numbers because when you add all the positions it = 32.
The purpose of an octet is to:
-separate the numbers
-create classes of IP addresses which are able to then be assigned to either a
*business
*government or another "entity"
The class they are put under are based on the size and need.
Octets are also split into two sections:
-Net
-Host or Node
Net Section
* Contains octet and it is used to identify a type of network that that particular computer belongs to.
Host Sections
*Contains last octet and it identifies the actual network on the computer.

2. What class of IP address are we using?
Firstly here is a brief outline of each class.
Class A- For very large networks, E.G.- Major international company.
Class B- For medium sized networks, E.G.- Large college campus.
Class C-For small to mid-size businesses.
Class D- Used for multicast.
Class E- Used for experimental purposes only.
We are using Class C.