An increased amount of web traffic to an e-commerce server is observed by a network administrator, but without an increase in the number of financial transactions. Which kind of attack might the company be experiencing

DoS Attack.

Explanation:

When an increased amount of web traffic to an e-commerce server is observed by a network administrator, but without an increase in the number of financial transactions, the attack which the company might be experiencing is DoS Attack (Denial Of Service). In this attack, the network resource or machine is kept busy temporarily or indefinitely which in turn is unavailable for its intended use.