IFSM 201 
Basic networking.
Using Word, "bold edit" in your answers.

Name:_______________________________

On your PC are you connected to a network wirelesly or cabled:___________

Windows 8/10 calls it "Connections" and "Ethernet" (which is the correct term).
 Wireless is called "WiFi" in 8/10.
various ways to get to it:

Windows 8:
 right-click networking icon in System tray, choose "Open Network and Sharing Center"
Mac has some equivalent...


Status:  _______  
Speed:  _______   
        Ethernet runs at 10, 100, or 1000 Mbps (million bits per seconds)
        Wireless speeds are more variable.

        All data/information/messages travel in bundles called packets.
7/8: #bytes sent: ____________
     #bytes received: ____________
A wireless connection shows Signal Strength bars:___________
and on Windows 7/8  SSID:__________________

 Details...
        using DHCP the computer will get its networking configuration automatically from the network.
7/8: DHCP Enabled:_______

IPv4 address:  ____________   
        each computer will have a different IP address.
Subnet mask:  ____________
        used with IP address to determine network address.
Default gateway:  ____________
        IP address of the router that this computer sends packets that need to go to another network
DNS server(s):  _____________________________
        IP address of computer that provides a DNS name to IP address translation service.
Physical address:  _______________________
        also known as MAC address.  Used for intra-LAN communication.
DHCP server: ______________________
        IP address of the computer that gave this computer its networking configuration.
Lease obtained: _____________________
Lease expires:  _____________________
so the lease is valid for how long:_______
        the DHCP networking configuration is valid only for a certain amount of time.
7/8: Description:________________________________________________
the hardware/chip I/O (peripheral) device that does the networking on your computer.


Run the Windows Command Prompt (CMD):
Start | Run | cmd
Start | All Programs | Accesories | Command Prompt
8: Start | Windows System group | Command Prompt

'ping' sends an ICMP Echo Request to, and gets ICMP Echo Response from,
a computer/node/host.  ping is the basic networking troubleshooting tool.  
You can use it to track down a problem by starting at the computer and
moving progressively outward.

Can the computer communicate with another computer on the LAN?
Ping your neighbor's computer by its IP address (ask your neighbor
what his/her IP address is): ___________________
What is the amount of time each ping takes:_______________
Some firewalls are set to block incoming pings. :(
In the classroom, ping your instructor's computer, it responds. Ping times:________
In the lab, ping 192.168.TBD.TBD :________________

Ping the default gateway by its IP address.
What is the amount of time each ping takes:_______________

Find out the IP address of the lab's laser printer by 
Start | Settings | Printers and Faxes | Properties of printerNameHere | Ports | Standard TCP/IP port 
widen the Port column to see IP_ which is the IP address:________________
Ping it, of course.
What is the amount of time each ping takes:_______________

Ping a DNS server to see if it responds.
What is the average ping time for them:_____________

Ping can work with domain names.
The domain name must first be translated by a DNS server into its IP address.  Your
computer first sends a request to the DNS server, it responds with the IP address,
then you send to that IP address. This translation happens automatically for every
message sent to a (new, non-cached) DNS name.
 ping www.yahoo.com
What is the average ping time for it:_____________
What is the "real name" (its IP address) of www.yahoo.com:______________

What's a long time to ping?  
 ping www.cenpac.net.nr           
If that doesn't work, try
 ping dns1.cenpac.net.nr
nr is the country code for Nauru, an island nation out in the Pacific,
What is the Average time:____________________________
It's using a satellite link, which are slow.

 ping www.anadyr.ru   in Siberia, usually is slow: Average time____________________
These two places are about as far away from us in the world, about one second.


What's the route a packet takes across the Internet?
 tracert  www.yahoo.com
The tracert command shows the times to go to each router along the
route from your computer to the destination.  Each router along the path
makes the decision of where to send the incoming to.
The big gap between hops x or x+1 is the traversal under the Pacific 
on a fiber optic cable, which alone takes approximately ______________ ms.

Might also cross the USA in one jump:
tracert www.nypl.org          (New York Public Library)

"Request timed out" indicates blocking of the pings and you might as well
stop the tracert command by Ctrl-C.

Goes from your computer to default gateway, to several routers at
our ISP in Naha (seems like and probably) these are the hops that
are 15 ms away, then to mainland Japan and more routers (50 ms),
then jumps the puddle to West coast and more routers, then jumps to
East coast or maybe goes indirectly,...

Notice that some routers have names instead of only IP addresses.  The
names can give a clue of where the router is or the network provider
(the Internet's backbones), any examples:
____________________________________________________
____________________________________________________

tracert www.cenpac.net.nr
Which hop is the satellite link and how much time does it (that hop) take:________________

tracert www.anadyr.ru
Is this taking the direct route to Siberia or is it going more than all around
the world:______________

www.cs.umass.edu