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You are here: Home / CompTIA / Network+ / Section I: Networking Concepts / Chapter 5: Common Network Protocols / Summary

Summary

The most common protocols, organized by the TCP/IP layer they operate at, are presented in Table 5.2 below:

 

Table 5.2 – TCP/IP Layers and Their Protocols

TCP/IP Layer

Protocol

Application
HTTP

HTTPS/TLS

FTP

TFTP

POP3

SMTP

IMAP

SIP

RTP

DHCP

DNS

Telnet

SSH

SNMP

NTP

Transport
TCP

UDP

Internet
IPv4

IPv6

ICMP

IGMP

Network Access
ARP

 

Port numbers are assigned to different protocols and services so that a user will know how and what to access at the other end and to identify specific applications . . .

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