Question 13 (1 point) A network administrator is concerned that the network is vulnerable to a denial-of-service attack. What steps should be taken to reduce this threat? (Select all that apply.) a Prevent intrusions. Ob Configure the router to block directed broadcasls to the network. Use access lists to allow only sources from the network to enter the router's interfaces d There isn't a way to reduce this threat. De Set up a spoofing account so that the attacker doesn't know which machine to attack. Submit