Network Devices 51 to service multiple network segments. DHCP can set options such as the network address, subnet mask, gateway, and DNS server address. Voice and IP telephony Voice over Internet Protocol (VoIP) allows you to talk to people all over the world over the Internet. The phones on the receiv- ing side can be either VoIP or traditional wired phones. You can make local or long distance calls by having them sent as packets across the Internet, thereby avoiding the long distance phone charges that may be associated with the communication. Load balancer A load balancer is a device that will distribute connection load between multiple devices in your environment that are serving the same function. Multifunction devices Whether a network printer or server, many devices have the capability to do more than just a single function. You will need to understand how to distinguish the different roles that a single device may play. Summary of Exam Objectives There are many devices that make up a network. Hubs are used to provide con-