What is packet switching?

Packet switching refers to a method of breaking down data into smaller, manageable packets for transmission over a network. This approach allows for flexible and efficient routing of these packets through various pathways available in the network. The essence of packet switching lies in its ability to dynamically determine the optimal route for packets, meaning that if a certain path is congested or unavailable, packets can be rerouted using an alternative pathway without requiring a dedicated connection for the entire communication session.

In contrast, the first option suggests that packet switching involves sending multiple packets simultaneously. While multiple packets can be transmitted over the network, packet switching specifically focuses on the process of routing individual packets independently rather than the quantity of packets being sent at once.

The second option describes data transmission in a serial format, which is more characteristic of older methods like circuit switching, where a continuous stream of data is sent over a dedicated line, rather than the packetized and flexible approach of packet switching.

The fourth option incorrectly limits packet switching to wireless networks, whereas it is actually a fundamental technology used in both wired and wireless networks. This universality makes packet switching critical for modern internet communication, enabling the efficient transfer of data across diverse network topologies.