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which uses TCP/IP for data interchange?

Which of the following is a Wide Area Network that was originally funded by the Department of Defense, which
uses TCP/IP for data interchange?

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A.
The Internet.

B.
The Intranet.

C.
The extranet.

D.
The Ethernet.

Explanation:
The Advanced Research Projects Agency Network (ARPANET), funded by the Department of Defense, was an
early packet switching network and the first network to implement the protocol suite TCP/IP. Both technologies
became the technical foundation of the Internet.
Incorrect Answers:
B: Intranets can use other protocols than TCP/IP. Intranet is not standard that was developed by the
Department of Defense.
C: Intranet can use other protocols than TCP/IP. Extraanet is not standard that was developed by the
Department of Defense.
D: Ethernet can use other protocols than TCP/IP. Ethernet is not standard that was developed by the
Department of Defense.

Harris, Shon, All In One CISSP Exam Guide, 6th Edition, McGraw-Hill, New York, 2013, p. 549


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