Ccna routing and Switching Complete Study Guide

Identify Host-to-Host layer protocols.    Transmission Control Protocol (TCP) is a connec-

tion-oriented protocol that provides reliable network service by using acknowledgments 

and flow control. User Datagram Protocol (UDP) is a connectionless protocol that provides 

low overhead and is considered unreliable.

Identify Internet layer protocols.    Internet Protocol (IP) is a connectionless protocol 

that provides network address and routing through an internetwork. Address Resolution 

Protocol (ARP) finds a hardware address from a known IP address. Reverse ARP (RARP) 

finds an IP address from a known hardware address. Internet Control Message Protocol 

(ICMP) provides diagnostics and destination unreachable messages.

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Chapter 3 

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  Introduction to TCP/IP