Which of the following is responsible for resolving a fully qualified domain name to the IP address?

A.
RAS server

B.
DNS server

C.
DHCP server

D.
WINS server

Explanation:
A, Domain Name Service (DNS) server resolves fully qualified domain names and host names to IP addresses.
Incorrect Answers:
A: A Remote Access Service (RAS) server allows remote clients to access a LAN though a dial-up connection and allows the remote clients to access files and services on the LAN.
C: A, Dynamic Host Configuration Protocol (DHCP) server is responsible for automating the IP configuration of DHCP clients. It does not provide any form of name resolution.
D: A Windows Internet Naming Service (WINS) server resolves NetBIOS names, not fully qualified domain names, to IP addresses.
References:
Charles J. Brooks, Server+ Certification Exam Cram 2 (Exam SK0-002), QUE Publishing, Indianapolis, 2006, pp. 18-25.
David Groth and Toby Skandier, Network+ Study Guide (4th Edition), Sybex, Alameda CA, 2005, pp. 82, 84, 112-113, 138-144.