What access technology does DOCSIS 1.0 use for sending data upstream?

DOCSIS 1.0 utilizes Time Division Multiple Access (TDMA) for sending data upstream. This technology allows multiple data streams to share the same bandwidth by allocating time slots for each user. In a broadband context, this means that users can transmit data at scheduled intervals, enabling efficient use of the available bandwidth while minimizing the chance of collisions, which can occur when multiple devices attempt to send data simultaneously.

In DOCSIS 1.0, upstream channels are divided into time slots, effectively allowing multiple upstream users to access the shared medium without interfering with each other’s transmissions. This method ensures that data packets from different users are sent in a controlled manner, which is crucial for maintaining network performance and reducing latency for all users.

This approach contrasts with other technologies mentioned in the options. For instance, Frequency Division Multiplexing (FDM) allows simultaneous transmission using different frequency bands but would not be effective for managing upstream data in the way TDMA does. Carrier Sense Multiple Access (CSMA) is primarily used in networking environments to manage access based on a "listen before talk" protocol, which can lead to collisions in a shared channel. Code Division Multiple Access (CDMA) uses unique codes to allow multiple users to share the same bandwidth