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what type of data is contained within the IP datagram?

The IP header contains a protocol field. If this field contains the value of 2, what type of data is contained within
the IP datagram?

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A.
TCP.

B.
ICMP.

C.
UDP.

D.
IGMP.

Explanation:
The IP header protocol field value for IGMP is 2.
Incorrect Answers:
A: The IP header protocol field value for TCP is 6, not 2.
B: The IP header protocol field value for ICMP is 1, not 2.
C: IP header protocol field value for UDP is 17, not 2.

Stewart, James M., Ed Tittel, and Mike Chapple, CISSP: Certified Information Systems Security Professional
Study Guide, 5th Edition, Sybex, Indianapolis, 2011, p. 123


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