To counter threats to remote user authentication, systems ...

[ss2343]

To counter threats to remote user authentication, systems generally rely on some form of ___________ protocol.
 
  A. eavesdropping C. Trojan horse
   B. challenge-response D. denial-of-service

Question 2

A ________ is an auction in which multiple buyers and their bidding prices are matched with multiple sellers and their asking prices, considering the quantities of both sides.
 
  Fill in the blank(s) with correct word

[alexisweber49]

Answer to Question 1

B

Answer to Question 2

double auction

[ss2343]

Thanks for the timely response, appreciate it

[ASDFGJLO]

Excellent