Answer:
RADIUS
Explanation:
RADIUS is the networking protocol that is used for the purpose of authentication to access the network resources. The full form of RADIUS is Remote Authentication Dial In User Service. It is used by different organizations, which setup their own network that can be accessible through VPN, DSL or modems through different networks. The purpose of this protocol is to establish the security and authentication mechanism by organization itself.
So, If an administrator needs to set up an authentication server for users connecting to a network through a VPN, he should establsih the RADIUS based Server.
Answer:
Broadcast message
Explanation:
The network models like OSI and TCP/IP suites have standard layers and protocols that governs the communication of end devices in a network.
The TCP/IP suite model has four layers which are application, transport, internet and network access layers. The network access does the work of both the data-link and physical layer of the OSI model.
When the packet is encapsulated in a data-link header and trailer, and needs to be sent to another unknown host, a broadcast message is sent to all the computers in the network to retrieve the remote host address for a unicast transmission to take place.
Answer: A) Make any simple fixes on their own.
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