ix ■ Chapter 10 TCP/IP Fundamentals looks at IPv4 and IPv6 addressing, DNS, IP, TCP, UDP, ports and sockets, DHCP, and broadcast versus multicast addresses. Students will also learn about TCP/IP-based troubleshooting utilities that can be used in most networking environments. ■ Chapter 11 Subnetting describes the binary number system dotted decimal nota- tion purposes, advantages, and disadvantages of subnetting and network segmenting devices. Students will also learn about VLANs, link aggregation, and CIDR notation. ■ Chapter 12 Additional Transmission Modalities focuses on the basics of audio and voice transmission and the compression and decompression of video. Transmission protocols are discussed at length, and students will learn VoIP troubleshooting methods. ■ Chapter 13 Web Servers and Services details the diff erences among the Internet, an intranet, and an extranet the parts and functions of a URL and information about markup languages. A more in-depth look at FTP and NNTP is provided in this chapter as well. ■ Chapter 14 Remote Access and Long-Distance Communication highlights components of telecommunication systems and provides a comparison of remote- connection technologies. Also covered in this chapter is dial-up networking and VPNs. ■ Chapter 15 Network Security focuses on the types of hacking and common network breaches and vulnerabilities. Th is chapter also covers common mitigation techniques. ■ Chapter 16 Maintaining the Network includes methods for monitoring servers and networks, maintenance software, proper maintenance of hardware, ensuring system integrity, and tools used to maintain stable electrical power. ■ Chapter 17 Fundamentals of Troubleshooting a Network outlines the CompTIA- suggested network troubleshooting strategies. It also describes the stages of computer operation and methods for diagnosing problems at each stage. Startup processes tools and strategies used to troubleshoot dual-boot systems, connection problems, and recovery methods are also discussed. ■ Chapter 18 Designing and Installing a New Network off ers a cursory view of net- work design and installation. Full coverage spans outside the scope of this text, but this chapter provides students with enough information to get them started and to help them determine if this is an area in which they would like to specialize. ■ Chapter 19 Network+ Certifi cation Exam Preparation provides strategies for scheduling, preparing for, and taking the CompTIA Network+ Certifi cation Exam. Th is chapter also features a 50-question practice exam that can be scored by the instructor. ■ Chapter 20 Employment in the Field of Networking Technology provides students with information they will need as they look toward employment in the IT industry. Various networking-based careers are explored, as are sources of career information. Important topics such as digital citizenship and soft skills are also discussed at length. It is important to gain insight into this information because students will need these skills for a successful career.