Network Scavenger Hunt

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Name:_____________________________________
Section Number:______
Network Scavenger Hunt
Cyberspace, Technologies and Society
C060
Format: Hand in Typed Answer Sheet
Review Chapter 4, pages 183 and 184, in the text, Succeeding with Technology. The Internet is
based on the TCP/IP protocol. All hosts using the Internet have IP addresses. There are several other
network settings which are necessary to ensure an Internet connection. You are going on a network
scavenger hunt to discover what those settings are. Have fun!!
PART I To answer the following questions, you will require a computer with Windows XP with a
network connection. These directions work only with non Temple lab computers.
NOTE: The Temple lab computers do not allow access to the C:> prompt. Because of security the
PING command and the command is also disabled in Astro. To work with Temple computers you
will have to use SSH and use your Astro account for nslookup and traceroute command. See section
PART II for instructions. This section is for those who do not have access to a non Temple
computer.
1. Go to start
2. Select run.
3. Type in “cmd” .
4. Press enter. You should be at a c: > prompt. This is called the command line. You use commands
instead of clicking on icons in Graphical User Interface (GUI).
The path will look something like c:\directory name >
5. You will now type at the c:\directory name> prompt, the command, nslookup 130.127.69.228.
Press enter.
1
Name:_____________________________________
Section Number:______
a. What is the host name or domain name for the IP address 130.127.69.228?__________________
b. What is the host name or domain name for the IP address 155.247.181.12?__________________
6. Instead of using the IP address with nslookup, use the domain name.
a. What is the IP address of www.upenn.edu? _________________________
b. What is the IP address of www.drexel.edu? _________________________
7. Ping is a utility which helps in troubleshooting network communications. It actually sends four
(by default) “echo” packets to a specified address to test responsiveness between the two hosts. It
waits for a reply.
A. Type in ping www.upenn.edu and press enter
To record response:
1. Use cut and paste method to put in this document.
2. Right click what you wish to copy. Select mark.
3. Then use mouse to highlight what you wish to copy. You may then right click in
the document and paste results in this document.
4. Or you could create a separate text file by using the exact syntax below. The file
upenn.txt will be saved in the same directory in which it was created. You may attach
that file to this assignment sheet.
Place results below
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Name:_____________________________________
Section Number:______
B. Ping www.temple.edu and follow the procedure described above in A. Cut and paste results
below.
8. TRACERT –Traceroute is also a network troubleshooting utility program which both checks the
responsiveness between two hosts and traces the path the packet takes to get from one host to
another.
A. At the c:\name of directory>prompt, type in the tracert www.drexel.edu and press enter.
Record your results: Follow same procedures as outline with the ping command in step A. Paste
results below.
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Name:_____________________________________
Section Number:______
2. How many networks did the packets pass through before it arrived at its destination?
____________________________________________________________________________
3. Name the first three routers of the packet path?
_____________________________________________________________________________
A. Go to http://www.traceroute.org
Choose Singapore as the country
Choose SingTel Internet Exchange (AS7473)
Put in your IP address where indicated.
1. Explain your results:________________________________________________
___________________________________________________________________
___________________________________________________________________
2. From the results, determine what the ISP of your computer?______________.
3. Name the first three cities to which the packets travel.______________________________
___________________________________________________________________________
PART II: Using Temple lab computers: If you are able to complete exercises in Part II because you
have access to a non networked Temple computer, you do not need to do this part.
1. Using SSH, log into astro.temple.edu. Click on quick connect. Put in your ID and password when
prompted.
4
Name:_____________________________________
Section Number:______
A. nslookup At the prompt, type at the [astro] 10:53pm - ~ > prompt, the command, nslookup
130.127.69.228 Press enter. See figure below:
1. What is the host name or domain name for the IP address 130.127.69.228?__________________
2. What is the host name or domain name for the IP address 155.247.181.12?__________________
B. Instead of using the IP address with nslookup, use the domain name.
[astro] 10:53pm - ~ > nslookup www.upenn.edu
1. What is the IP address of www.upenn.edu? _________________________
2. What is the IP address of www.drexel.edu? _________________________
2. Ping is a utility which helps in troubleshooting network communications. It actually sends four (by
default) “echo” packets to a specified address to test responsiveness between the two hosts. It waits
for a reply.
A. At the Astro prompt, change the directory by typing “/usr/sbin/”. Type in “ping www.upenn.edu”
and press enter: See figure below
[astro] 10:53pm - ~ > /usr/sbin/ ping www.upenn.edu
To record response:
1. Use cut and paste method to put in this document.
2. Left click and highlight what you wish to copy by dragging mouse.
3. Right click your mouse, a menu will appear. Select copy.
4. Paste result in the space below by holding down the CTRL key and the letter “v”
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Name:_____________________________________
Section Number:______
B. At the Astro prompt, change the directory by typing “/usr/sbin/”. Type in “ping www.drexel.edu”
and press enter: See figure below
[astro] 10:53pm - ~ > /usr/sbin/ ping www.drexel.edu
Record results. Follow instructions detailed in part A.
3. TRACEROUTE: Traceroute is also a network troubleshooting utility program which both checks
the responsiveness between two hosts and traces the path the packet takes to get from one host to
another.
A. Enter the command "/usr/sbin/traceroute www.drexel.edu".
[astro] 10:53pm - ~ > usr/sbin/traceroute www.drexel.edu
Record and Paste: /see instructions below
1. Hold down the left click of your mouse and highlight area to be copied.
2. Right click mouse on highlighted area, and select copy from the menu.
3. Hold down the CTRL key and the letter V simultaneously. This will paste the highlighted area into
your answer sheet.
4. How many networks or “hops” did the packets pass through before it arrived at its destination?
____________________________________________________________________________
5. Name the first three routers of the packet path?
_____________________________________________________________________________
C. After you have completed the above exercises, type exit at the Astro prompt. This will
disconnect you from Astro and return you to XP. You can complete the remaining portion of the
hunt on any Temple lab computer.
Go to http://www.traceroute.org
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Name:_____________________________________
Section Number:______
Choose Singapore as the country
Choose SingTel Internet Exchange (AS7473)
Put in your IP address where indicated.
1. Explain your results:________________________________________________
___________________________________________________________________
___________________________________________________________________
2. From the results, determine what is the ISP of your computer?_____________________
3. Name the first three cities to which the packets travel.______________________________
___________________________________________________________________________
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