Identify the keywords that should be displayed in the numbered positions $($not all keywords given, are used$)$ switching is a method of transmitting over a network. When a sends a request to a $,$ for example by typing a domain name in a web browser, the domain name is resolved to an IP address using the $.$ The request is broken down into small data packets by the $,$ which is responsible for ensuring the reliable delivery of data over the internet.Each packet is labeled with the source and destination $,$ as well as a sequence number that identifies the order of the packets. The packets are then sent over the network and may pass through several $,$ which examine the destination address and forward the packets towards their destination.At the destination, the packets are reassembled in the correct order based on their sequence numbers. The server receives the packets, reassembles them, and sends a response back to the client in the same way.Packet switching allows for more efficient use of network resources, as packets can be routed based on the availability of network resources. This means that multiple packets from different clients can be transmitted simultaneously over the same $,$ without the need for a dedicated circuit.