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Cisco CIT 642-831 - The Physical and Data Link Layers


This course explains how to utilize tools and commands that can help identify problems with a Cisco router or switch, network cabling, or other network problems affecting the Physical layer of the network. These basics include using the show commands, phy

This lesson is part of our Cisco CIT 642-831 online training series which contains over 18 hours of self-paced courseware. Our web-based training provides 6 months of unlimited access.


After completing this course you will be able to:

  • Describe the show commands that can be used to view the configuration and to monitor and view the statistics of Cisco interfaces
  • Articulate the need for Network Monitoring Systems
  • Understand what SNMP is and how it works with Network Monitoring Systems
  • Troubleshoot switched connections, switch hardware and software, VTP, ISL, and Spanning Tree Protocol configurations
  • Identify switch troubleshooting and configuration software
  • Learn which diagnostic tools to apply to VLAN configuration problems
  • Troubleshoot inter-VLAN routing configurations, trunk links, switches, and routers


  • Equipment for Troubleshooting
  • Troubleshooting with the show Command
  • The Cisco Discovery Protocol (CDP)
  • Configuration and Fault Management
  • Hardware Troubleshooting
  • Layer 2 Troubleshooting Basics
  • Catalyst Switch Troubleshooting Software
  • Remote Monitoring (RMON)
  • Lost Password
  • Switch Troubleshooting Commands

This course is for anyone who wants to get the most out of using Cisco CIT 642-831.

Prerequisites: None:

Technical Requirements:

  • Internet connection
  • Browser: Internet Explorer, FireFox, Chrome, Safari, Opera or any standards compliant browser.
  • Authorware and Macromedia Flash player recommended but not required.
  • JavaScript must be enabled.

Retake any or all of our computer training as often as you want. Our online tutorials allow you to learn anywhere, anytime from any computer with internet access. All courses allow for 6 months of unlimited access (1 user), includes a variety of features and all courses qualify for Continuing Education Unit credit.

StaffKit is an e-learning leader in providing computer training tutorials and online education. We have satisfied customers in over 75 countries using our online training courses. We have been a leading provider of self-paced web based training for the past 10 years.

Total Courses: 9
Total Time: 18+ hours
Only $99.95
Available in Package only
Total Courses: 853
Total Time: 1723+ hours
Only $249.95
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