Which two NTP client operating modes allow time synchronization?

In Network Time Protocol (NTP), time synchronization can be achieved through several operating modes. Broadcast and Polling represent two methods that facilitate this synchronization:

• In the Broadcast mode, an NTP server can send time updates to all NTP clients on the network without needing individual requests. Clients listen for these broadcasts and adjust their clocks accordingly, making it a highly efficient mode for environments where numerous clients need time synchronization.

• The Polling mode, on the other hand, allows NTP clients to actively request time updates from an NTP server at regular intervals. This mode involves the client reaching out to the server, which then responds with the current time and adjusts the client's clock.

Both of these modes enable effective time synchronization: Broadcast provides a one-to-many approach, while Polling focuses on individual requests, allowing clients to maintain accurate time representation in their systems.

The other answer choices introduce terms that do not classify as valid NTP client operating modes for synchronization in the same way. For instance, Multicast is often considered alongside Broadcast as a way to send time updates but is not explicitly recognized as a common operating mode in traditional NTP specifications. Unicast, while also a valid mode, pertains specifically to direct client-to-server communication and is not