Exam 220-1101 topic 1 question 359 discussion

C The correct answer is C. PoE switch. A PoE switch is a network device that can provide both data and power to other devices over an Ethernet cable. PoE stands for Power over Ethernet, which is a technology that allows electrical power to be transmitted along with data on twisted pair Ethernet cabling. This eliminates the need for separate power supplies or AC adapters at the users’ desks, as the VoIP devices can receive power from the PoE switch12. A firewall is a network device that monitors and controls incoming and outgoing network traffic based on predefined security rules. It does not provide power to other devices1.

The correct answer is C. PoE switch. A PoE (Power over Ethernet) switch allows you to power devices like VoIP phones, wireless access points, and IP cameras over the same Ethernet cable that provides data connectivity. This eliminates the need for separate power adapters at each device, making deployment and maintenance easier. Here's why the other options are incorrect: A. Firewall: A firewall is a network security device that monitors and filters incoming and outgoing network traffic. It doesn't provide power to devices. B. Power injector: A power injector is a device that injects power into an Ethernet cable to power a PoE device. However, it's typically used for single devices, not for multiple devices. A PoE switch is a more efficient and scalable solution. D. Router: A router is a networking device that forwards data packets between networks. It doesn't provide power to devices. Therefore, a PoE switch is the most appropriate choice for powering VoIP phones in a corporate office. GG

C is correct