A Cisco MDS Series Switch with the POAP feature boots and does not find the startup configuration. Which location is checked first when the switch enters POAP mode?
A. USB device that contains the software image files and the switch configuration file
B. DHCP server to bootstrap the interface IP address, gateway, DNS server, and TFTP IP addresses
C. TFTP server where the necessary configuration files are downloaded
D. HTTP server where the URL is used to download the software image
