If the request packet are larger than the response packets, you (as the attacker) would have been better off just sending the packets directly to the target.
It's also worth thinking about where you can find those amounts of bandwidth. If you're doing a direct (as in not reflected) attack you will need as much bandwidth in your end as you want to hit the ...
It's a couple of things. The answers above are right, but also missing an important feature.
It is for DDoS prevention. DNS is one of the last unencrypted, unauthenticated, UDP protocols in common use on the Internet. That makes it great for reflected or bot-directed attacks. Using a DNS service can help keep those from hitting your data center.
It is ...
A DDoS Attack does affect the uptime rate of your network, it is important that all network pieces are staying up and running, as it is important for commercial websites to not make potential loss, a preventative control can be using load balancing for example to spread the load to other member machines.
On it's own, a DDOS attack will just disrupt your network and prevent devices to work as intended.
However you have to consider two things :
A DDOS attack may be a symptom of another attack (fuzzing, massive bruteforce, and so on)
A DDOS may only be a decoy to hide another attack
DDoS stands for
Distributed Denial of Service
The impact for you as the target of such an attack would be a severe disruption of you operational capabilities.
A DDoS attack may be used to hide another attack - maybe on another host - that plans to gain access, but on it's own, this attack will not help an attacker to gain access.
On the other side, ...