Typically Ping is used for that feature.
Use the command line utilities to test connectivity, then send a test file across the network
1. ping, to test network layerconnectivity also called L3 connectivity. 2. traceroute, to trace how a packet reaches its destination, and to analyse routing problems if any.
Utilities are programs that can run or execute. Commands are slightly different than utilities. Command refers to the name of the program and any arguments you specify to that program to change its behavior.
The ping command.
ping
Defrag
Ping
The 'man' or the 'info' command have documentation about utilities and commands in the system.
Imperative sentence
DSADD
Use ping command to check the connectivity to any of the known DNS servers of the Internet Service Provider. If ping fails, then there is no internet connectivity or network is not through.
Ping