CompTIA exam study guide presentations by instructor Brian Ferrill, PACE-IT (Progressive, Accelerated Certifications for Employment in Information Technology) "Funded by the Department of Labor, Employment and Training Administration, Grant #TC-23745-12-60-A-53" Learn more about the PACE-IT Online program: www.edcc.edu/pace-it

1. Troubleshooting
networks – wired.

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Instructor, PACE-IT Program – Edmonds Community College
Areas of Expertise Industry Certifications
 PC Hardware
 Network Administration
 IT Project Management
 Network Design
 User Training
 IT Troubleshooting
Qualifications Summary
Education
 M.B.A., IT Management, Western Governor’s University
 B.S., IT Security, Western Governor’s University
Entrepreneur, executive leader, and proven manger
with 10+ years of experience turning complex issues
into efficient and effective solutions.
Strengths include developing and mentoring diverse
workforces, improving processes, analyzing
business needs and creating the solutions
required— with a focus on technology.

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PACE-IT.
– Common symptoms.
– Common tools.

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Troubleshooting networks – wired.

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Troubleshooting networks – wired.
No connectivity.
The most likely cause is
the network interface.
Check link lights, cables, and
connections.
APIPA address.
The most likely cause is
incorrect DHCP settings.
If the address begins with
169.254.XXX.XXX, check the
property settings for IPv4.
Limited connectivity.
The most likely cause is
the device or the router.
If you can’t connect to a local device,
check the device. If you can’t
connect to other networks, check the
router.

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Troubleshooting networks – wired.
Local connectivity only.
The most likely cause is
the default gateway.
A default gateway is required to
reach other networks; the setting
could be wrong or the router could
be offline.
Intermittent connectivity.
The cause is most likely
one of three things.
This could be caused by a bad
cable, a NIC that’s about to go
down, or a bad port on the switch or
router.
IP conflict.
The most likely cause is
a misconfigured address.
This doesn’t happen often using
DHCP; however, it is more likely
when using static addressing.

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Troubleshooting networks – wired.

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Troubleshooting networks – wired.
– Loop back plug.
» Used to check the functionality of a NIC.
» As the name implies, sends a signal out and then right
back in.
– Cable tools.
» Cable tester: used to test the integrity of the cable.
» Toner probe: used to trace the path of the cable.
» Punch down tools: used to place wires in a punch down
block.
» Wire strippers: used to remove insulated jacket from
cables.
» Crimper: used to secure cable into the proper
termination end.

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Troubleshooting networks – wired.
– Software network utilities.
» Ipconfig (Internet protocol configuration): used to
review IP configuration on a node.
• C:ipconfig /all
» Ping: uses ICMP echo requests to test for basic
connectivity between two nodes.
• C:ping 192.168.0.1
» Tracert: uses ICMP echo requests to map the path
between two nodes on separate networks.
• C:tracert www.google.com
» Netstat (network statistics): used to identify which
applications are using network connections.
• C:netstat -a
» Nbtstat: used to troubleshoot NetBIOS name resolution
issues .
• C:nbstat -A
» Net: commonly used to establish the path to a network
share.
• C:net use

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Troubleshooting networks – wired.
Network troubleshooting can be tricky; many of the symptoms that are
manifested can be difficult for the end user to nail down for you. Using a
solid methodology will ease the process. Problems with NICs, cables, and
settings can all interrupt the user’s ability to access the network.
Topic
Common symptoms.
Summary
Network tools can be broken out into two categories—software utilities and
hardware tools. Software utilities include: Ipconfig, Ping, Tracert, Netstat,
Nbtstat, and Net. Hardware tools include loopback plugs, cable testers,
punch down tools, toner probes, wire strippers, and crimpers.
Common tools.

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THANK YOU!

12. This workforce solution was 100 percent funded by a $3 million grant awarded by the
U.S. Department of Labor's Employment and Training Administration. The solution was
created by the grantee and does not necessarily reflect the official position of the U.S.
Department of Labor. The Department of Labor makes no guarantees, warranties, or
assurances of any kind, express or implied, with respect to such information, including
any information on linked sites and including, but not limited to, accuracy of the
information or its completeness, timeliness, usefulness, adequacy, continued availability
or ownership. Funded by the Department of Labor, Employment and Training
Administration, Grant #TC-23745-12-60-A-53.
PACE-IT is an equal opportunity employer/program and auxiliary aids and services are
available upon request to individuals with disabilities. For those that are hearing
impaired, a video phone is available at the Services for Students with Disabilities (SSD)
office in Mountlake Terrace Hall 159. Check www.edcc.edu/ssd for office hours. Call
425.354.3113 on a video phone for more information about the PACE-IT program. For
any additional special accommodations needed, call the SSD office at 425.640.1814.
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