CompTIA Network+ 2009: Network Protocols

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


In the late 1970s, those people working in the computer networking field felt that there was a need for a set of standards that could be used by anyone designing and developing applications and services that would need to communicate across a network. The Open Systems Interconnection (OSI) model was designed to meet this need. The OSI model is a set of communication standards, or protocols, that enable devices and applications to communicate with each other, regardless of their origin. These protocols are sets of formal rules that govern communication and allow developers to design applications or devices that can communicate with other designer’s products without the need for direct collaboration between them. In this course, the OSI model is explained as is a wide range of protocols, including those that are part of the TCP/IP suite of protocols. The protocols are the foundation of networking and without them there would be no network and no Internet.
This course maps to CompTIA’s Network+ (2009) exam objective explain the function of each layer of the OSI model and for explaining the function of common networking protocols and identifying commonly used TCP and UDP default ports.

Target Audience

The audience for CompTIA Network+ 2009 training will comprise IT personnel with at least 9 months IT networking experience. Good computer literacy along with a sound technical acumen should be present. Students looking to acquire job skills, and to be trained specifically to pass the associated CompTIA Network+ (2009 Edition) certification exam will want to study this learning path.


CompTIA’s A+ credential is a recommended, although not mandatory, prerequisite.

Expected Duration

180 min.

Course Objectives

The OSI Model

  • recognize the difference between the OSI model and the four-layer DoD model
  • distinguish between the layers in the OSI model
  • recognize the basics of encapsulation and de-encapsulation
  • The TCP/IP Suite

  • recognize the key factors of the TCP/IP suite’s success
  • recognize the functions of the TCP/IP services
  • TCP and IP

  • recognize the key functions of IP
  • recognize the functions and key characteristics of TCP
  • recognize the TCP standards
  • Common TCP and UDP Port Numbers

  • distinguish between TCP and UDP
  • recognize the key features of UDP
  • recognize the most common TCP and UDP ports
  • The TCP/IP Suite of Protocols

    Data Link and Network Layer Protocols

  • distinguish between Data Link layer and Network layer protocols
  • recognize the functions of the ARP, ICMP, and IGMP Network layer protocols
  • recognize the functions of the RIP, OSPF, EIGRP, and BGP routing protocols
  • recognize the functions of the HDLC, PPP, and Frame Relay Data Link layer protocols
  • Transport Layer Protocols

  • distinguish between the Transport layer protocols
  • recognize the characteristics of UDP protocols
  • recognize the characteristics of RTP
  • recognize the characteristics of TLS
  • Session and Presentation Layer Protocols

  • distinguish between the session and presentation layer protocols
  • Application Layer Protocols

  • recognize Application layer protocol functions
  • Recognizing Protocols at the Host Layers