Which of the following will you consider as a program that monitors data traveling over a network?

A.
Smurfer

B.
Sniffer

C.
Fragmenter

D.
Spoofer

Explanation:
A sniffer is a program and/or device that monitor data traveling over a network.
Sniffers can be used both for legitimate network management functions and for stealing
information off a network. Unauthorized sniffers can be extremely dangerous to a
network’s security because they are virtually impossible to detect