Anetwork technician is using telnet to connect to a router on a network that has been compromised. a new user and password has been added to the router with full rights. the technician is concerned that the regularly used administrator account has been compromised. after changing the password on all the networking devices, which of the following should the technician do to prevent the password from being sniffed on the network again?
a. place each department in a separate vlanb. add a router and create a segment for all the monitoring host stationsc. increase the number of switches on the network to reduce broadcastsd. increase the collision domain to compensate for the added broadcasts