An engineer is using a tool to run an ICMP sweep of a network to find devices that are online. When reviewing
the results, the engineer notices a number of workstations that are currently verified as being online are not
listed in the report.
The tool was configured to scan using the following information:
Network address: 172.28.16.0
CIDR: /22
The engineer collected the following information from the client workstation:
IP address: 172.28.17.206
Subnet mask: 255.255.252.0
Which of the following MOST likely explains why the tool is failing to detect some workstations?


A. The scanned network range is incorrect.
B. The subnet mask on the client is misconfigured.
C. The workstation has a firewall enabled.
D. The tool is unable to scan remote networks.