October 2021
Intermediate to advanced
752 pages
19h 43m
English
Content preview from CompTIA Network+ N10-008 Cert Guide
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Chapter 1
The OSI Model and Encapsulation
This chapter covers the following topics related to Objective 1.1 (Compare and contrast the Open Systems Interconnection [OSI] model layers and encapsulation concepts) of the CompTIA Network+ N10-008 certification exam:
OSI model
Layer 1—Physical
Layer 2—Data link
Layer 3—Network
Layer 4—Transport
Layer 5—Session
Layer 6—Presentation
Layer 7—Application
Data encapsulation and decapsulation within the OSI model context
Ethernet header
Internet Protocol (IP) header
Transmission Control Protocol (TCP)/User Datagram Protocol (UDP) headers
TCP flags
Payload
Maximum transmission unit (MTU)
Way back in 1977, the International Organization for Standardization (ISO) developed a subcommittee to focus on ...
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I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.