CompTIA Network+ N10-009 Cert Guide [Paperback]

Anthony Sequeira (CCIE No. 15626) began his IT career in 1994 with IBM in Tampa, Florida. He quickly formed his own computer consultancy, Computer Solutions, and then discovered his true passion: teaching and writing about networking technologies. Anthony lectured to massive audiences around the world while working for Mastering Computers. Anthony has never been happier in his career than he is now, as a senior technical instructor for ACI Learning. ACI is a leader in audit, cybersecurity, and IT pro training in self-paced and instructor-led formats.

Introduction xxxv
Part I: Networking Concepts
Chapter 1 The OSI Model and Encapsulation 3
Foundation Topics 4
The Purpose of Reference Models 4
The OSI Model 6
Layer 1: The Physical Layer 7
Layer 2: The Data Link Layer 11
Media Access Control 12
Logical Link Control 13
Layer 3: The Network Layer 14
Layer 4: The Transport Layer 17
Layer 5: The Session Layer 19
Layer 6: The Presentation Layer 20
Layer 7: The Application Layer 21
The TCP/IP Stack 22
Layers of the TCP/IP Stack 22
Common Application Protocols in the TCP/IP Stack 26
Real-World Case Study 27
Summary 28
Exam Preparation Tasks 28
Chapter 2 Networking Appliances, Applications, and Functions 35
Foundation Topics 36
Physical and Virtual Appliances 36
Routers 36
Switches 36
Firewalls 45
Intrusion Detection System (IDS)/Intrusion Prevention System (IPS) 46
IDS Versus IPS 46
IDS and IPS Device Categories 47
Signature-Based Detection 48
Policy-Based Detection 48
Anomaly-Based Detection 48
Load Balancer 49
Proxy Servers 49&ll3#