Which command can be used to verify the connection to a remote server?

The command used to verify the connection to a remote server is "ping." This utility sends Internet Control Message Protocol (ICMP) echo request packets to the specified host and waits for a response. By measuring the round-trip time and checking for packet loss, ping helps to determine whether the remote server is reachable over the network.

Using ping is straightforward; you simply need to specify the hostname or IP address of the server you want to test. If the server is reachable, you will receive a response indicating the time taken for the packets to travel back and forth, which confirms the connection.

On the other hand, the other choices do not serve the same purpose. "Check" is not a standard command available in most command-line interfaces for testing connections. "Trace" may refer to tracing routes (as in traceroute), which helps identify the path taken by packets to reach the destination but does not verify connectivity in the same direct manner as ping. "Connect" is a generic term and can refer to various types of connections, but it is not a specific command used for verifying connectivity. Hence, ping is the most appropriate and widely used command for this purpose.