Mike Meyers' CompTIA Network+ Certification Passport by Meyers, Michael -- Read -- Imperial Library of Trantor

Index

Cover Title Copyright Dedication Acknowledgments About the Authors CompTIA® Contents Check-In 1. Network Fundamentals

Objective 1.01: Overview of How Networks Work

Servers and Clients Network Components

Ethernet Hubs and Switches Software Applications Connecting LANs

Objective 1.02: The OSI Seven-Layer Model

The Layers and What They Represent

Layer 1: Physical Layer Layer 2: Data Link Layer Layer 3: Network Layer Layer 4: Transport Layer Layer 5: Session Layer Layer 6: Presentation Layer Layer 7: Application Layer

Using the Seven-Layer Model

Objective 1.03: The TCP/IP Model

The Link Layer The Internet Layer The Transport Layer

Connection-oriented vs. Connectionless Communication Segments Within Packets and Datagrams Within Packets

The Application Layer

Checkpoint

Review Questions Review Answers

2. Network Media

Objective 2.01: Coaxial Cabling

Coaxial Cable Types Coaxial Connectors

Objective 2.02: Twisted-Pair Cabling

UTP Cable Types

Variations in Core Wires and Sheath Materials

UTP Connectors UTP Wiring Standards

T568A and T568B Wiring Standards Straight-through and Crossover Cables Rollover and Loopback

Wiring Distribution

Patch Panel Cross-connects, MDF, and IDF

UTP Testing

Objective 2.03: Optical Fiber

Optical Fiber Connectors Uses for Fiber Implementing Multiple Types of Ethernet

Objective 2.04: Wireless Media Types

802.11 Wireless Networks Wireless Basics

BSSID, SSID, and ESSID Wireless Standards Wireless Frequency Ranges

Laser Links Bluetooth Infrared Wireless Networking

Checkpoint

Review Questions Review Answers

3. Network Topologies and Standards

Objective 3.01: The Bus Topology and Ethernet

Ethernet Overview How Ethernet Works

CSMA/CD Collisions Termination Cable Breaks Broadcast Bonding

Ethernet Standards Ethernet on the Bus

Objective 3.02: The Star Bus Topology

10BaseT and 100BaseT Gigabit Ethernet

10/100/1000BaseT Summary

10 Gigabit Ethernet (10 GbE)

Objective 3.03: Ring Topologies Objective 3.04: Other Topologies

Mesh Topology Point-to-point and Point-to-multipoint

CSMA/CA

Checkpoint

Review Questions Review Answers

4. Network Hardware

Objective 4.01: Network Interfaces

MAC Address Organizing the Data: Ethernet Frames

Preamble Destination and Source MAC Addresses Type Data Frame Check Sequence

Objective 4.02: Repeaters, Hubs, and Bridges Objective 4.03: Switched Ethernet

The Trouble with Hubs Switches to the Rescue Spanning Tree Protocol

Objective 4.04: Connecting Ethernet Segments

Uplink Ports Crossover Cables

Objective 4.05: Routers Objective 4.06: Wireless Access Points Checkpoint

Review Questions Review Answers

5. TCP/IP

Objective 5.01: The TCP/IP Protocol Suite

Application Protocols

Port Numbers Sockets List of Application Protocols Compound Application Protocols

Transport Protocols

TCP UDP

Internet Protocols

Internet Protocol Internet Control Message Protocol (ICMP)

Objective 5.02: IPv4 Addressing

IP Addresses IP Addresses in Action

Network IDs Interconnecting Subnet Mask

Class IDs Private vs Public IP Addresses

Need for Changes

Objective 5.03: CIDR and Subnetting

Subnetting

Calculating Hosts Your First Subnet Calculating Subnets

Objective 5.04: IPv6 Addressing

IPv6 Addresses IPv6 Protocols

ICMPv6

Objective 5.05: Domain Name System

DNS Records DHCP

Living with DHCP

Checkpoint

Review Questions Review Answers

6. Routing

Objective 6.01: Routing Tables

Freedom from Layer 2

Objective 6.02: Network Address Translation

The Setup Port Address Translation Port Forwarding Configuring NAT

Objective 6.03: Dynamic Routing

Routing Metrics Distance Vector

RIPv1 RIPv2 BGP

Link State

OSPF IS-IS

EIGRP—The Lone Hybrid Dynamic Routing Makes the Internet

Checkpoint

Review Questions Review Answers

7. Virtualization

Objective 7.01: Virtual LANs

Trunking Configuring a VLAN-capable Switch VLAN Trunking Protocol InterVLAN Routing

Objective 7.02: Virtual Computing

Meet the Hypervisor Why Do We Virtualize?

Power Saving Hardware Consolidation System Recovery System Duplication Research

Objective 7.03: Virtualization in Modern Networks

VMMs and Hypervisors Virtual Machine Managers

VMware Workstation Virtual PC Parallels KVM

Hypervisors

ESX HyperV

Virtual Switches Virtual PBX Network as a Service

Checkpoint

Review Questions Review Answers

8. Wide Area Networking

Objective 8.01: Telephony and Beyond

The Dawn of Long Distance Digital Telephony

It All Starts with DS0

Copper Carriers: T1 and T3 Fiber Carriers: SONET/SDH and OC Packet Switching

Frame Relay ATM MPLS

Real-World WAN Alternative to Telephony WAN

Objective 8.02: The Last Mile

Dial-up

Public Switched Telephone Network ISDN

DSL

SDSL ADSL VDSL DSL Features Installing DSL

Cable Modems Satellite Cellular WAN

Mobile Data Services 802.16 LTE

Fiber BPL Which Connection?

Going Connection Shopping

Objective 8.03: Using Remote Access

Dial-up to the Internet Private Dial-Up Dedicated Connection

DSL and Cable Cable Issues

Remote Terminal

VoIP RTP SIP and H.323 Skype Streaming Media with RSTP

Checkpoint

Review Questions Review Answers

9. Network Security

Objective 9.01: Common Threats

System Crash/Hardware Failure Administrative Access Control Malware

Virus Worm Macro Virus Trojan Rootkit Adware/Spyware Dealing with Malware Antimalware Programs

Social Engineering

Phishing

Man in the Middle Denial of Service Physical Intrusion Attacks on Wireless Connections

Leeching Cracking Wireless Encryption Rogue Access Points Evil Twin

Objective 9.02: Securing User Accounts

Authentication

Authentication Principles Authentication Protocols

Authorization Logon and Access Security

Implementing Share-Level Security Implementing User-Level Security Using Passwords

Objective 9.03: Firewalls

Hiding the IPs Port Filtering Packet Filtering MAC Filtering Personal Firewalls Network Zones Vulnerability Scanners

Objective 9.04: Securing Remote Connections

IPsec Virtual Private Networks

PPTP VPNs L2TP VPNs SSL VPNs

Checkpoint

Review Questions Review Answers

10. The Complete Network

Objective 10.01: Designing and Implementing a SOHO Network

Define the Network Needs Network Design Compatibility Issues Internal Connections External Connections Peripherals Security

Objective 10.02: Implementing a Wireless Network

Installing the Access Point

Set the Admin Password Change Wireless Settings Implement MAC Filtering Implement Encryption Upgrade the Antenna Security Concerns with Signaling

Installing the Client Troubleshooting Wireless Networking

Objective 10.03: Specialized Network Devices Objective 10.04: Network Configuration Management

Configuration Management Documentation

Network Connectivity Baselines Policies, Procedures, and Configurations Regulations

Change Management Documentation

Checkpoint

Review Questions Review Answers

11. Troubleshooting Networks

Objective 11.01: The Troubleshooting Process

Identify the Problem

Gather Information, Identify Symptoms, and Question Users Determine If Anything Has Changed

Establish a Theory of Probable Cause Test the Theory to Determine Cause Establish a Plan of Action and Identify Potential Effects Implement and Test the Solution or Escalate as Necessary Verify Full System Functionality and Implement Preventative Measures Document Findings, Actions, and Outcomes

Objective 11.02: Troubleshooting Network Hardware

Power Issues Network Media Visual Indications of Problems Check the NIC Bad Modules Troubleshooting Other Physical Network Issues

Issues That Need To Be Escalated

Objective 11.03: Testing Equipment

Multimeters Tone Locators and Toner Probes Cable Testers

Checkpoint

Review Questions Review Answers

12. Network Utilities and Optimization

Objective 12.01: TCP/IP Utilities

ipconfig and ifconfig

ipconfig ifconfig

tracert arp netstat nbtstat nslookup arping dig mtr route

Objective 12.02: Troubleshooting Network Performance

Protocol Analyzers Throughput Testers Network Performance Optimization

Caching Controlling Data Throughput

ISPs and MTUs

Objective 12.03: Monitoring Networks

Establishing a Baseline Performance Monitor Network Monitor Checking System Logs Logs and Network Traffic SNMP

Checkpoint

Review Questions Review Answers

A. Career Flight Path

CompTIA Server+ Certification CompTIA Security+ Certification Microsoft Certified Technology Specialist (MCTS) Certifications Cisco Certifications

B. About the Download

System Requirements Installing and Running Total Tester About Total Tester Playing Mike’s Intro Video Mike’s Cool Tools Boson’s NetSim Network Simulator Technical Support Boson Technical Support

Glossary Index

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