Which protocol provides addressing and routing at the Internet layer in the TCP/IP suite?

Which protocol provides addressing and routing at the Internet layer in the TCP/IP suite?

• A. VLAN
• B. IP
• C. OAuth
• D. REST

Answer: (B)

The protocol that provides addressing and routing at the Internet layer is IP. In the TCP/IP model, the Internet layer is responsible for moving packets between different networks, and IP supplies the logical addresses (IPv4 or IPv6) used to identify devices across those networks. Each IP packet carries a source and destination address in its header, and routers use the destination address to determine the next hop toward the destination, enabling end-to-end delivery across diverse networks. Other options don’t fit: VLAN operates at the data-link layer to segment local networks, OAuth handles authorization, and REST is an architectural style for web services.

The protocol that provides addressing and routing at the Internet layer is IP. In the TCP/IP model, the Internet layer is responsible for moving packets between different networks, and IP supplies the logical addresses (IPv4 or IPv6) used to identify devices across those networks. Each IP packet carries a source and destination address in its header, and routers use the destination address to determine the next hop toward the destination, enabling end-to-end delivery across diverse networks. Other options don’t fit: VLAN operates at the data-link layer to segment local networks, OAuth handles authorization, and REST is an architectural style for web services.