Download Adobe 9A0-129 Exam PDF

9a0-129

9A0-129 Contents

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Security Threats . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 528 Denial of Service Man in the Middle Malware 9A0-129 9A0-129 exam dumps free Buffer Overflow Social Engineering Wireless Threats Mitigation Techniques 529 529 530 531 531 532 533

Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 534 Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 535 Chapter Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 536 Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 538 Exercise Chapter Review 538 538

chapter 12 Network management
Cable Diagrams Network Diagrams Network Maps Hardware Configurations Change Management Baselines Logs SNMP Protocol Analyzers Port Scanners Vulnerability Scanners

541
543 544 546 546 547 547 549 556 558 563 565

Network Documentation . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 542

Network Monitoring . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 549

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Virtualization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 566 Virtualization Architectures Desktop Virtualization Virtual Switching Presentation Virtualization Application Virtualization Virtual PBXes Caching Data Traffic Control Redundant Services 567 569 570 570 571 571 573 574 575

Performance Optimization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 572

Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 578 Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 579 Chapter Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 580 Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 581 Exercise Chapter Review 581 581

chapter 13 Network troubleshooting
The Ping Program Traceroute Ifconfig and Ipconfig.exe ARP Netstat Nbtstat.exe Nslookup Dig Route

583
585 586 588 589 590 594 595 596 597

Troubleshooting Tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 585

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Contents xvii

Troubleshooting Methodology . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 597 Identify the Problem Establish a Theory Test the Theory Establish a Plan of Action Implement the Solution Verify System Functionality Document Findings Troubleshooting Connectivity Issues Troubleshooting Wireless Problems Troubleshooting Router and Switch Problems Incident Administration Gathering Information Possible Cause: Internet Router Problem Possible Cause: Internet Communication Problem Possible Cause: DNS Failure Possible Cause: LAN Communications Problem Possible Cause: Computer Configuration Problem Possible Cause: User Error 598 601 601 602 603 603 604 605 606 607 612 613 614 616 617 622 626 630

Network Troubleshooting Scenario: “I Can’t Access a Website” . . . . . . . . 612

Exercise . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 631 Chapter Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 631 Chapter Review . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 632 Answers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 634 Exercise Chapter Review 634 634

Glossary

637

Index

655

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Contents

Introduction
This training kit is designed for information technology (IT) professionals who support or plan to support networks and who also plan to take the CompTIA Network+ exam. It is assumed that before you begin using this kit, you have a CompTIA A+ certification or the equivalent knowledge, as well as 9 to 12 months of work experience in IT networking. The material covered in this training kit and on the Network+ exam relates to the technologies in a network that support distributed access to web content, media, operating systems, and applications. The topics in this training kit cover what you need to know for the exam as described on the Certification Exam Objectives document for the exam, which is available at: http://certification.comptia.org/getCertified/certifications/network.aspx By using this training kit, you will learn how to do the following:

Use the Open Systems 9A0-129 exam 9A0-129 exam dumps Interconnection (OSI) reference model to understand network processes. Install and maintain the various cables and other media used to build networks. Understand the protocols that networked computers use to communicate. Understand how routers and switches connect network devices to each other and to other networks. Connect to distant networks by using wide area network (WAN) technologies. Secure a network by using firewalls and other tools. Use network monitoring and diagnostic tools. Troubleshoot network problems in a systematic and logical manner.