Match the following IT terminolgies and functions supported by them.

List-I	List-II
a. Four - part numeric address indicating a unique computer location on the internet.	1. DNS
b. A hierarchical system of services maintaining databases enabling the conversion of domain names of their IP address.	2. Gopher
c. Tool for retrieving and transferring file form a remote computer.	3. IP
d. A tool that enables the user to locale information stored on Internet Servers though a series of easy-to-use hierarchial menus.	4. FTP