Introduction

Modern technology is increasingly characterized by the interconnectivity of our devices. This means that to keep pace with this progress and provide consistent and effective support, it is imperative that IT professionals have a working knowledge of networking concepts ranging from IP addresses to the different types of wireless networks.

You will need to know what ports different applications use in order to open those ports on the firewall and allow them to communicate. IT administrators also need to know how to troubleshoot issues when users cannot connect to the network, whether the source of the problem is a DNS or IP error. Wireless networks are a common part of everyday life, and it is vital that you have the knowledge and experience to determine which type of wireless network is best for a given scenario. The practice test in this chapter will test the application of the information that you have gained from previous study.

In the CompTIA A+ Core 1 (220-1101...