Tasks

26.1&2 Networks and Internet Review Assignment - Part 2

• Watch video 2: The Internet: Crash Course Computer Science #29 [11:57]

• Related concepts:
  • The Internet is a computer network consisting of interconnected networks that use standardized, open (nonproprietary) communication protocols. 
  • Access to the Internet depends on the ability to connect a computing device to an Internet-connected device.
  • A protocol is an agreed-upon set of rules that specify the behavior of a system.
  • The protocols used in the Internet are open, which allows users to easily connect additional computing devices to the Internet.
  • Routing on the Internet is usually dynamic; it is not specified in advance.
  • The scalability of a system is the capacity for the system to change in size and scale to meet new demands. 
  • The Internet was designed to be scalable.

26.3 Traceroute in Class Discussion

• Use the traceroute program (explanation in the video description on YouTube) and compare the ping times for multiple websites
• Find two to focus on where the physical distance is greater but the ping time is shorter
• In partners, have them discuss reasons for or causes of the disparity

26.4 How Networks and the Internet Work - Worksheet Part 2

• Have the students complete the remainder of the worksheet based on video 2. 
• The worksheet is here.

26.5 Protecting Personal Information when Online - Using the Explore Teachers Resource

• These concepts have cropped up regularly throughout the courses but are always worth reviewing.  It will also serve as a review of the ethics concepts earlier in the unit.
• Complete the Collecting Data task from the Explore Teachers Resource.  Note that the aboutmyinfo.org site used only works fully within the United States.  (I hope to find a Canadian equivalent soon.)

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