Final answer:
The technology that must have the capability to detect data collisions to avoid simultaneous broadcasts by multiple computers is Ethernet. It monitors the network through a protocol called CSMA/CD which helps in preventing data collisions.
Step-by-step explanation:
The capability to detect data collisions is crucial in network communications to avoid simultaneous data transmission by multiple devices, which can result in a collision. The correct answer to which technology must have this capability is c. Ethernet. Ethernet uses a protocol called Carrier Sense Multiple Access with Collision Detection (CSMA/CD) to monitor the network signals and avoid data packet collisions. When a device transmits data, it checks the line for traffic. If the line is clear, it proceeds with the data transmission. If the network is in use, the device waits for a random period before checking again. If a collision is detected, the devices involved in the collision wait for a random time before attempting to retransmit.
While Bluetooth and Wi-Fi also involve wireless communication, they handle potential data collisions differently than Ethernet. Wi-Fi, for example, uses a similar protocol called Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA) to reduce the chances of collisions by waiting before sending packets if the medium is busy. However, for the question specifically, Ethernet is the answer as it is known for collision detection.