Displays network connections (both incoming and outgoing), routing tables, and a number of network interface and network protocol statistics. It is used for finding problems in the network and to determine the amount of traffic on the network as a performance measurement.
Queries a Domain Name System (DNS) server for DNS data. Deprecated on Unix systems in favor of host and dig. As of 2006[update], the preferred tool for Windows.
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Sends numerous packets to a host and reports results.
Shows the series of successive systems a packet goes through en route to its destination on a network. It works by sending packets with sequential TTLs which generate ICMP TTL-exceeded messages from the hosts the packet passes through. Broadly available for many systems.