Which one of the following attacks will pass through a network layer intrusion detection system
undetected?

A.
A teardrop attack

B.
A SYN flood attack

C.
A DNS spoofing attack

D.
A test.cgi attack

Explanation:
“Because a network-based IDS reviews packets and headers, it can also detect denial of service
(DoS) attacks.” Pg. 64 Krutz: The CISSP Prep Guide
Not A or B:
“The following sections discuss some of the possible DoS attacks available.
Smurf

Fraggle
SYN Flood
Teardrop
DNS DoS Attacks”
Pg. 732-737 Shon Harris: All-In-One CISSP Certification Exam Guide