DoS attacks

Please help me in resolving this question. Seems my team has many answers to which there are only two correct ones as per CISCO.

Question:

In which TWO devices would you expect DoS attacks from the Internet in the Enterprise Edge Functional Area? Choose Two:

a. VPN/IPSec
b. Public Servers
c. WAN Module
d. Database Servers
e. Web Servers

AFAIK:

b.Public Servers

e. Web Servers

Public servers

web servers and somtimes in

database servers if it is connected to web servers without a firewall in the middle.

WAN Module and an VPN/IPSec. :D

public servers and web servers

It depends on what's available from the Internet. In theory anything you hook up to the Internet is susceptible to a DoS.

Also depends what kind of a DoS you have in mind, whether be resource depletion or application crash. The latter does not require multiple computers on high bandwidth connection, however it does require one to be able to exploit an overflow of sorts in that particular app. In that sense, anything connected to the web is susceptible to a DoS.