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This lesson introduces computer network standards.
Objectives and Skills
Objectives and skills for the standards portion of Network+ certification include:
- Analyze a scenario and determine the corresponding OSI layer
- Layer 1 – Physical
- Layer 2 – Data link
- Layer 3 – Network
- Layer 4 – Transport
- Layer 5 – Session
- Layer 6 – Presentation
- Layer 7 – Application
- Explain the basics of network theory and concepts
- Modulation techniques
- Analog and digital techniques
- TCP/IP suite
- YouTube: Understanding the OSI Model - CompTIA Network+ N10-006 - 5.1
- YouTube: Network Fundamentals - CompTIA Network+ N10-006 - 5.2
- YouTube: The TCP/IP Suite - CompTIA Network+ N10-006 - 5.2
- Review StudyTonight: Comparison of OSI Reference Model and TCP/IP Reference Model. Draw your own personal reference chart comparing the Internet protocol suite four-layer model to the OSI seven-layer model.
- Review the information boxes on the top right of Wikipedia: OSI model and Wikipedia: Internet protocol suite. Identify protocols you recognize from both information boxes and add them to your reference chart. At a minimum, you should include Ethernet, IP, TCP, UDP, DHCP, DNS, HTTP, IMAP, POP, and SMTP.
- Observe network layers in operating system software.
- Review PluralSight: Windows 7 Advanced Network Configuration.
- Examine network connection properties on your system. Identify which OSI and Internet protocol suite layers each of the connection items represents. Add these to your reference chart.
- Consider why the OSI seven layer model is sometimes referred to as a theoretical model while the Internet protocol suite might be referred to as an operational model.
- Use a protocol analyzer to observe protocol layering and encapsulation.