Which of the following protocols allows for the LARGEST address space?

A.
IPX

B.
IPv4

C.
IPv6

D.
Appletalk

Explanation:
The main advantage of IPv6 over IPv4 is its larger address space. The length of an IPv6 address is 128 bits,
compared with 32 bits in IPv4.
Incorrect Answers:
A: A big advantage of IPX was a small memory footprint of the IPX driver, which was vital for MS-DOS and
Microsoft Windows up to the version Windows 95 because of limited size of the conventional memory.
B: IPv4 has 32-bit addresses, whereas IPv6 has 128 bit addresses.
D: AppleTalk is a proprietary suite of networking protocols developed by Apple Inc.

http://en.wikipedia.org/wiki/IPv6#Larger_address_space
http://en.wikipedia.org/wiki/Internetwork_Packet_Exchange
http://en.wikipedia.org/wiki/AppleTalk