Course Labs
Hands-On Lab 1: In this instructor-led demo,
learn monitoring facilities of the protocol analyzer used in
class.
Hands-On Lab 2: The first step in
troubleshooting a network is understanding the network itself.
What characteristics will you measure for your baseline? Learn
how to collect and analyze data to establish a baseline for the
classroom network.
Hands-On Lab 3: Examine the available
options of the PING command and exercise the 7-step PING
procedure discussed in class.
Hands-On Lab 4: Use Traceroute to verify
that the routers are working properly. Compare results to those
generated by the IP record route option.
Hands-On Lab 5: Proper operation of the
Domain Name Server is crucial to a smooth running IP network.
Gain experience using Nslookup to query DNS servers to diagnose
and troubleshoot errors.
Hands-On Lab 6: Where can you find the
number of TCP segments retransmitted by a particular device?
What about the number of IP fragments generated? CRC errors?
Routing tables? Active TCP sessions? At your workstation, use
Netstat to get information on the status of networking devices,
routing tables, and TCP/UDP connections.
Hands-On Lab 7: The PING utility, when used
properly, can tell you much more than whether you have IP
connectivity to an IP host. Use PING to identify the effect that
packet size and path have on round-trip times. You also identify
multiple ways to answer questions about identified network
characteristics.
Hands-On Lab 8: Practice several methods of
setting up and using filters on your protocol analyzer.
Hands-On Lab 9: Examine, decode, and
interpret multiple ICMP error messages. Identify a wide variety
of scenarios that could produce such messages.
Hands-On Lab 10: Using a protocol analyzer,
inspect and discuss the characteristics of various TCP/IP
applications including Telnet, FTP, and the Web. Learn where to
look to identify application faults.
Hands-On Lab 11: Using the tools and
techniques refined in previous labs, your job is to find the
source of a communications failure as soon as possible and fix
it.
Hands-On Lab 12: A user has recently moved
to a new cubicle. He calls to report that he can't use any of
the applications he has used in the past. Identify dozens of
potential causes for communications problems.
Hands-On Lab 13: Users are able to
communicate to some hosts on the network, but not others.
Working with other students in the class, determine who can talk
to whom, isolate the source of the problem, and fix it.
Hands-On Lab 14: Classroom teams work
together to discover how Microsoft's TCP/IP implementation
prevents problems by detecting and reporting duplicate IP
addresses on the network.
Hands-On Lab 15: A user needs to access a
particular server to retrieve information. She's made several
attempts to reach the server, but has been unsuccessful. Does
her difficulty stem from a DNS problem? Using nslookup and other
tools, verify that DNS is working properly.
Hands-On Lab 16: A disgruntled employee has
gotten into the network and created chaos. It's your job to find
the problems. Using all the tools available to you, locate each
problem before the employees revolt.