Which of the following protocols resides in the Internet TCP/IP Architecture layer?
(A) SMTP
(B) TCP
(C) Ethernet
(D) IP
(A) SMTP
(B) TCP
(C) Ethernet
(D) IP
IP is the correct answer. The TCP/IP Internet layer includes a small number of protocols, but only one major protocol: the Internet Protocol (IP) and the Internet Control Message Protocol (ICMP). IP provides several features, most importantly, addressing and routing.
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