(ISC)2 Certified in Cybersecurity Practice Exam

Which device can connect multiple networks together?

1. Switch

2. Router

3. AP

4. Wireless controller

The correct answer is: Router

A router is specifically designed to connect multiple networks together, making it the correct choice for this question. It functions as a traffic director, forwarding data packets between different networks, which can include both local area networks (LANs) and wide area networks (WANs). By determining the best path for data, routers enable communication between devices on distinct networks, such as connecting a local home or office network to the Internet. In contrast, a switch primarily operates within a single local area network. It connects devices within that network and uses MAC addresses to forward data only to the intended device, without facilitating inter-network communication. An access point (AP) serves to connect wireless devices to a wired network but does not connect different networks. Lastly, a wireless controller manages multiple access points in a network, typically to ensure seamless connectivity and control over wireless network access; however, it also does not perform the function of connecting different networks. Thus, the unique capability of routers to connect diverse networks distinguishes them as the correct answer.