What is the result of simultaneous signals from two nodes in a network?

Simultaneous signals from two nodes in a network can result in data collisions. This occurs when both nodes attempt to transmit data at the same time on the same communication channel. When a collision happens, it disrupts the data being sent, leading to potential loss or corruption of that data. As a result, the network's communication process must handle the collision, typically by employing a backoff algorithm, where the involved nodes pause and then try to retransmit their data after a random delay. This fundamental concept is particularly important in networking protocols like Carrier Sense Multiple Access with Collision Detection (CSMA/CD) used in Ethernet networks.

The other options highlight scenarios that do not accurately reflect the consequences of simultaneous transmissions: data transfer being accelerated is not possible because collisions require retransmissions; data integrity is not guaranteed after a collision; and network security is not inherently enhanced by collisions, as this situation primarily affects connectivity and data transmission efficiency rather than security measures.