Overview

Introduction

Welcome to the Troubleshoot Internet Connection and DNS Issues Practice Lab. In this module you will be provided with the instruction and computer hardware to develop your hands-on skills in the defined topics.

Learning Outcomes

In this module, you will complete the following exercises:

  • Exercise 1 - Troubleshoot Internet Connectivity Issues
  • Exercise 2 - Troubleshoot Network Connectivity due to DNS settings

After completing this lab, you will be able to:

  • Identify, analyze and resolve internet connectivity issues
  • Apply and Verify proxy settings
  • Identify, analyze and resolve DNS issues
  • Configure Host files

Objectives

  • N10-007 2.3: Explain the purposes and use cases for advanced networking devices (Proxy server)
  • N10-007 5.2: Given a scenario, use the appropriate tool (Command line, nslookup)
  • N10-007 5.5: Given a scenario, troubleshoot common network service issues (Names not resolving)

Lab Duration

It will take approximately 1 hour to complete this lab.

Exercise 1 - Troubleshoot Internet Connectivity Issues

A wide area network (WAN) connects computers across distributed geographical locations. This means WANs enable people to communicate and share data and information across cities, states, or even nations. The Internet is the prime example of a WAN. WAN connections may experience connectivity issues due to various factors.

Learning Outcomes

After completing this exercise, you will be able to:

  • Identify, analyze and resolve internet connectivity issues
  • Apply and Verify proxy settings

Exercise 2 - Troubleshoot Network Connectivity (DNS Issues)

DNS, short for Domain Name System, resolves domain names and hostnames into numeric IP addresses on a TCP/IP network. Although DNS is largely associated with the Internet, DNS can also be used on a private network.

DNS is essential in TCP/IP because domains and hosts (devices) are named using normal language words, making it easier for users to find computers on a TCP/IP network, while the computers and other devices identify and communicate with each other using numeric IP addresses.

Learning Outcomes

After completing this exercise, you will be able to:

  • Identify, analyze and resolve DNS issues
  • Configure Host files

Comprehensive Learning

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