Skip to main content
Engineering LibreTexts

5.8: Summary

  • Page ID
  • \( \newcommand{\vecs}[1]{\overset { \scriptstyle \rightharpoonup} {\mathbf{#1}} } \) \( \newcommand{\vecd}[1]{\overset{-\!-\!\rightharpoonup}{\vphantom{a}\smash {#1}}} \)\(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\) \(\newcommand{\id}{\mathrm{id}}\) \( \newcommand{\Span}{\mathrm{span}}\) \( \newcommand{\kernel}{\mathrm{null}\,}\) \( \newcommand{\range}{\mathrm{range}\,}\) \( \newcommand{\RealPart}{\mathrm{Re}}\) \( \newcommand{\ImaginaryPart}{\mathrm{Im}}\) \( \newcommand{\Argument}{\mathrm{Arg}}\) \( \newcommand{\norm}[1]{\| #1 \|}\) \( \newcommand{\inner}[2]{\langle #1, #2 \rangle}\) \( \newcommand{\Span}{\mathrm{span}}\)\(\newcommand{\AA}{\unicode[.8,0]{x212B}}\)


    The networking revolution has completely changed how personal computers are used. Today, no one would imagine using a computer that was not connected to one or more networks. The development of the Internet and World Wide Web, combined with wireless access, has made information available at our fingertips. The Web 2.0 revolution has made everyone potential authors of web content. As networking technology has matured, the use of Internet technologies has become a standard for every type of organization. The use of intranets and extranets has allowed organizations to deploy functionality to employees and business partners alike, increasing efficiencies and improving communications. Cloud computing has truly made information available everywhere.

    Study Questions

    1. What were the first four locations hooked up to the Internet (ARPANET)?
    2. What does the term packet mean?
    3. Which came first, the Internet or the World Wide Web?
    4. What was revolutionary about Web 2.0?
    5. What was the so-called killer app for the Internet?
    6. What does the term VoIP mean?
    7. What is a LAN?
    8. What is the difference between an intranet and an extranet?
    9. What is Metcalfe’s Law?


    1. What is the difference between the Internet and the World Wide Web? Create at least three statements that identify the differences between the two.
    2. Who are the broadband providers in your area? What are the prices and speeds offered?
    3. Pretend you are planning a trip to three foreign countries in the next month. Consult your wireless carrier to determine if your mobile phone would work properly in those countries. What would the costs be? What alternatives do you have if it would not work?


    1. Check the speed of your Internet connection by going to the following web site:
      What is your download and upload speed?
    2. What is the IP address of your computer? How did you find it? Hint for Windows: Go to the start icon and click Run. Then open the Command Line Interface by typing: cmd Then type: ipconfigWhat is your IPv4 address?What is your IPv6 address?
    3. When you enter an address in your web browser, a Domain Name Server (DNS) is used to lookup the IP address of the site you are seeking. To locate the DNS server your computer is using, type: nslookupWrite down the name and address of your DNS server.Use the nslookup command to find the address for a favorite web site. For example, to find the IP address of espn type: nslookup espnWrite down your website’s name and address. Note: it is on the line following the name of the web site you entered.
    4. You can use the tracert (trace route) command to display the path from your computer to the web site’s IP address you used in the previous lab. For example, tracert patient as tracert contacts each router in the path to your website’s server. A “Request timed out” message indicates the tracing is taking too long, probably due to a lack of bandwidth. You can stop the trace by pressing Ctrl + C
    5. The ping command allows you check connectivity between the local host (your computer) and another host. If you are unable to connect to another host, the ping command can be used to incrementally test your connectivity. The IP address is known as your home address (local host).Begin your test by going to your command line interface (command promkpt) and pinging your local host: ping should get a series of “Reply from” messagesNext, ping the IP address you used in lab #3.Sometimes a failed ping is not the result of a lack of connectivity. Network administrators of some IP addresses/hosts do not want their site pinged so they block all ICMP packets. That’s the protocol used for pinging.
    • The site provides you with information about a web site. For example, to find information about open your web browser and type: Then in the Lookup window, type: google.comFind information about a favorite site of yours. Record the following: administrator name, phone number, when the site was created, and the site’s name servers (the names begin with “ns”).
    • Network statistics can be displayed using the netstat command. In the command line window (see lab #2 for instructions on how to get to the command line), type: netstat -eHow many bytes were sent and how many were received?Execute the command again and record your results. You should see an increase in both received and sent bytes.To see a complete list of options/switches for the netstat command, type: netstat ?

    1. Wolcott, M. (2017). What is Web 2.0? MoneyWatch. Retrieved from
    2. Molla, R. (2017). These are the fastest and slowest Internet speeds”. Recode. Retrieved from
    3. International Telecommunications Union. (2018, January 23). UN Broadband Commission sets goal broadband targets to bring online the world’s 3.8 billion not connected to the Internet. Retrieved from
    4. “Dean, J. (2014). 4G vs 5G Mobile Technology. Raconteur Retrieved from

    This page titled 5.8: Summary is shared under a CC BY-SA license and was authored, remixed, and/or curated by David T. Bourgeois (Saylor Foundation) .

    • Was this article helpful?