When using the monitor traffic command on Junos devices, which UNIX-based utility is accessed?

A. snoop

B. tcpdump

C. monitor

D. tail

tcpdump is a common packet analyzer that runs under the command line. It allows the user to display TCP/IP and other packets being transmitted or received over a network to which the computer is attached.

References: https://en.wikipedia.org/wiki/Tcpdump