Cisco ICND1 1.1: Network Connections and Communications

This course is included in our On-demand training solution.


Data networks, including the Internet, are responsible for supplying reliable, transparent communication for people and applications. Data from applications such as e-mail, web browsers and instant messaging is packaged, transported and delivered to its destination continually. The OSI model’s Transport layer handles most of the addressing functions for data transmission and is responsible for end-to-end transfer of application data. This course introduces some of the main protocols that operate at the Transport layer, such as TCP, UDP, and ARP and describes the process of packet delivery.

Target Audience

Network administrators, network engineers, network managers, network designers, and project managers; individuals seeking the Cisco Certified Entry Network Technician (CCNET) certification and those individuals targeting the Cisco Certified Network Associate (CCNA) certification



Expected Duration

120 min.

Course Objectives

Introduction to the Transport Layer

  • describe the basic functions of the Transport layer
  • UDP and TCP

  • recognize the major characteristics of the UDP transport protocol
  • recognize the major characteristics of the TCP transport protocol
  • TCP Connections and Data Transfer

  • recognize how TCP establishes a connection with a peer system
  • recognize how TCP transfers data between a two-peer system
  • Observing the Three-Way Handshake

    Exploring the Packet Delivery Process

  • recognize layer devices and their functions
  • describe how to map physical addressing to network addressing
  • recognize parameters of host-based tools
  • Observing ARP Resolutions

    Understanding Ethernet

  • describe the functionality of Ethernet LANs
  • recognize the basic components of LANs
  • Connecting to the Ethernet LAN

  • recognize connection requirements and media for Ethernet LAN
  • recognize cable connections for an Ethernet LAN