Yes. Good ones will have a time-domain reflectometer (TDR) that will tell you were the break or sharp bend in the cable is in addition to the standard is this c

Yes. Good ones will have a time-domain reflectometer (TDR) that will tell you were the break or sharp bend in the cable is in addition to the standard is this cable terminated correctly test. They will also be able to do basic connectivity tests to make sure things above the physical layer (eg: is there DHCP?) are operating correctly so you don't also need to swap to a laptop to fully troubleshoot a network drop.