The correct answer is option 4.Ping:Ping is a computer network administration software utility used to test the reachability of a host on an Internet Protocol (IP) network. It measures the round-trip time for messages sent from the originating host to a destination computer that are echoed back to the source.Autosense:Autosense refers to a feature found in network adapters that allows them to automatically recognize the current local network's speed and adjust its own setting accordingly. It is often used with Ethernet, Fast Ethernet, switches, hubs and network interface cards.Process synchronization:Process synchronization refers to the idea that multiple processes are to join up or handshake at a certain point, in order to reach an agreement or commit to a certain sequence of action. Data synchronization refers to the idea of keeping multiple copies of a dataset in coherence with one another, or to maintain data integrity, Process synchronization primitives are commonly used to implement data synchronization.Auto-negotiation:Auto-negotiation is a signaling mechanism and procedure used by Ethernet over twisted pair by which two connected devices choose common transmission parameters, such as speed, duplex mode, and flow control. Auto-negotiation is defined in clause 28 of IEEE 802.3. and was originally an optional component in the Fast Ethernet standard.Hence the correct answer is Auto-negotiation.