ITPEC IP April 2026 Question 33
ITPEC IP April 2026 — Question 33 of 100
TCP/IP — the protocol suite provides lower-layer transport and internetworking services used by application protocols.
HTTP, FTP, POP, and SMTP perform application-specific tasks above TCP/IP. TCP provides end-to-end transport, while IP addresses and routes packets between networks.
Answer (d)
Why not others: (a) FTP is an application-layer file-transfer protocol; (b) POP retrieves e-mail; (c) SMTP sends and relays e-mail. All three depend on lower TCP/IP functions.
Key rule: Application protocols define a service; TCP/IP supplies the common transport and network foundation underneath them.
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