Answer:
The answer is reflective DNS attack
Explanation:
Reflective DNS Attack is used in many distributed DDoS attacks to knock down an internet pipe. The attack is divided in two stages: first the attacker sends lots of requests to one or more legitimate DNS servers while using spoofed source IP of the target person, and then, in the second stage, the DNS server receiving the semi-legitimate requests replies to the spoofed IP, thereby unknowingly lauching an attack on the target computer with responses to requests never sent by the victim.
Answer:
Use autofill
Explanation:
In excel "autofill" is used to fill data in cells, which follows the pattern or logic applied in other cells. To apply same calculation of A20 in B20 to H20, we use autofill technique. Instead of copy pasting, or manually entering the complex formula this method is more suitable.