A Network Technician Notices a Router That Repeatedly Reboots

Multiple Choice

A network technician notices a router that repeatedly reboots. When contacting technical support, the technician discovers this is a known problem in which an attacker can craft packets and send them to the router through an obsolete protocol port, causing the router to reboot. Which of the following did the network technician fail to do? (Choose two.)

A) Generate new crypto keys.
B) Keep patches updated.
C) Disable unnecessary services.
D) Shut down unused interfaces.
E) Avoid using common passwords.
F) Implement file hashing.