DNS flood vs DNS Amplification attack: How is one considered a network/transport layer attack and the other a application layer attack?

I am reading a survey on DDoS attacks and they describe how these attacks can be classified by either Network/Transport level attacks and Application level attacks. In their examples, they classify DNS flooding as network/tra… Continue reading DNS flood vs DNS Amplification attack: How is one considered a network/transport layer attack and the other a application layer attack?