What is the purpose of using a UDP ping scan in network security?

a. The purpose of using a UDP ping scan in network security is to block unauthorized access to a network. 

b. The purpose of using a UDP ping scan in network security is to identify live hosts on a network by sending UDP packets to specific ports and waiting for responses. It can be particularly useful in environments where ICMP is blocked. 

c. The purpose of using a UDP ping scan in network security is to increase the speed of a network. 

d. The purpose of using a UDP ping scan in network security is to encrypt data on a network.