• Ifconfig – configure interface parameters of the network.
  • dig – performs DNS lookups to display a result obtained from name servers.
  • traceroute – prints the route that the packets take to the network host.
  • nslookup – queries internet domain name servers.
  • telnet – connect destination port if the connection between hosts is working fine
  • netstat – reviews each network connection and the open sockets.
  • w – writes (prints) current activities and processes by each user.
  • scp – secure copy the files from and to another host in the network.
  • ifup/ifdown – enable or disable the network interface respectively.
  • nmap – checks for the opened port on the server
BY Best Interview Question ON 15 Apr 2019

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