Which of the following protocols is used to share information between routers to transport IP Multicast packets among networks?

Which of the following is a type of VPN that involves a single VPN gateway?

Mark works as a Network Administrator for Infonet Inc. The company has a Windows 2000 Active Directory domain-based network. The domain contains one hundred Windows XP Professional client computers. Mark is deploying an 802.11 wireless LAN on the network. The wireless LAN will use Wired Equivalent Privacy (WEP) for all the connections. According to the company's security policy, the client computers must be able to automatically connect to the wireless LAN.
However, the unauthorized computers must not be allowed to connect to the wireless LAN and view the wireless network. Mark wants to configure all the wireless access points and client computers to act in accordance with the company's security policy. What will he do to accomplish this? Each correct answer represents a part of the solution. Choose three.

Which authorization lets users access a requested resource on behalf of others?

How is the chip-level security of an IoT device achieved?