- ホーム
- > 洋書
- > 英文書
- > Computer / General
Full Description
Prepare for CompTIA Network+ N10-005 exam success with this CompTIA Authorized Exam Cram from Pearson IT Certification, a leader in IT Certification learning and a CompTIA Authorized Platinum Partner. Limited Time Offer: Buy CompTIA Network+ N10-005 Authorized Exam Cram and receive a 10% off discount code for the CompTIA Network+ N10-005 exam. To receive your 10% off discount code: * Register your product at pearsonITcertification.com/register* Follow the instructions * Go to your Account page and click on "Access Bonus Content" CompTIA(R) Network+ N10-005 Authorized Exam Cram, Fourth Edition is the perfect study guide to help you pass CompTIA's new Network+ N10-005 exam. It provides coverage and practice questions for every exam topic, including substantial new coverage of security, wireless, and voice networking. The book contains an extensive set of preparation tools, such as quizzes, Exam Alerts, and a practice exam, while the CD's state-of-the-art test engine provides real-time practice and feedback. Covers the critical information you'll need to know to score higher on your Network+ (N10-005) exam!* Understand modern network topologies, protocols, and models* Work effectively with DNS and DHCP* Monitor and analyze network traffic* Understand IP addressing, routing, and switching* Perform basic router/switch installation and configuration* Manage networks and utilize basic optimization techniques* Plan and implement a small office/home office network* Master essential LAN, WAN, and wireless technologies* Install, configure, secure, and troubleshoot wireless networks* Safeguard networks with VPNs, authentication, firewalls, and security appliances* Troubleshoot common problems with routers, switches, and physical connectivity Companion CD The companion CD contains a digital edition of the Cram Sheet and the powerful Pearson IT Certification Practice Test engine, complete with hundreds of exam-realistic questions and two complete practice exams. The assessment engine offers you a wealth of customization options and reporting features, laying out a complete assessment of your knowledge to help you focus your study where it is needed most. Pearson IT Certifcation Practice Test Minimum System Requirements * Windows XP (SP3), WIndows Vista (SP2), or Windows 7 * Microsoft .NET Framework 4.0 Client * Pentium-class 1 GHz processor (or equivalent) * 512 MB RAM * 650 MB disk space plus 50 MB for each downloaded practice exam EMMETT DULANEY (Network+, A+, Security+) is a columnist for CertCites, an associate professor at Anderson University, and the author of numerous certification guides including CompTIA A+ Complete Study Guide and CompTIA Security+ Study Guide. MICHAEL HARWOOD (MCSE, A+, Network+, Server+, Linux+) has more than 14 years of IT experience in roles including network administrator, instructor, technical writer, website designer, consultant, and online marketing strategist. He regularly discusses technology topics on Canada's CBC Radio.
Contents
Introduction ... 1 About Network+ Exam Cram... 1 About the Network+ Exam ... 2 CompTIA Network+ Exam Topics ... 2 Booking and Taking the Network+ Certification Exam ... 4 What to Expect from the Exam ... 5 A Few Exam Day Details... 5 After the Test ... 6 Last-Minute Exam Tips ... 6 CHAPTER 1: Introduction to Networking ... 9 LANs, WANs, and Network Models ... 10 LANs ... 10 WANs ... 11 Network Models ... 12 Centralized Computing versus Distributed Computing ... 14 Cram Quiz Answers ... 15 Network Topologies ... 16 Bus Topology ... 16 Ring Topology... 18 Star Topology ... 19 Mesh Topology ... 20 Wireless Topologies ... 22 Point-to-Point, Point-to-Multipoint, and Wireless Mesh Topologies ... 24 Hybrid Topologies ... 27 Cram Quiz Answers ... 31 Going Virtual ... 32 Virtual Private Networks (VPNs) ... 32 Virtual Local Area Networks (VLANs) ... 35 Cram Quiz Answers ... 40 What Next? ... 41 CHAPTER 2: OSI and TCP/IP Models and Network Protocols ... 43 The Networking Models ... 44 The OSI Seven-Layer Model ... 44 The TCP/IP Four-Layer Model ... 49 Identifying the OSI Layers at Which Various Network Components Operate ... 50 Cram Quiz Answers ... 51 Protocols ... 53 Connection-Oriented Protocols Versus Connectionless Protocols ...54 Internet Protocol (IP) ... 55 Transmission Control Protocol (TCP) ... 55 User Datagram Protocol (UDP) ... 56 File Transfer Protocol (FTP) ... 57 Secure File Transfer Protocol (SFTP)... 58 Trivial File Transfer Protocol (TFTP) ... 59 Simple Mail Transfer Protocol (SMTP) ... 59 Hypertext Transfer Protocol (HTTP) ... 60 Hypertext Transfer Protocol Secure (HTTPS) ... 60 Post Office Protocol Version 3/Internet Message Access Protocol Version 4 (POP3/IMAP4) ... 61 Telnet ... 62 Secure Shell (SSH) ... 62 Internet Control Message Protocol (ICMP)... 63 Address Resolution Protocol (ARP)/Reverse Address Resolution Protocol (RARP) ... 63 Network Time Protocol (NTP) ... 65 Network News Transfer Protocol (NNTP) ... 66 Secure Copy Protocol (SCP) ... 66 Lightweight Directory Access Protocol (LDAP) ... 66 Internet Group Management Protocol (IGMP) ... 67 Transport Layer Security ... 67 Session Initiation Protocol (SIP)/Real-Time Transport Protocol (RTP) ... 68 TCP/IP Protocol Suite Summary ... 69 Cram Quiz Answers ... 73 Domain Name Service (DNS) ... 74 The DNS Namespace ... 76 Types of DNS Entries... 78 DNS Records ... 78 CompTIA Network+ N10-005 Authorized Exam Cram DNS in a Practical Implementation ... 79 Cram Quiz Answers ... 81 Simple Network Management Protocol (SNMP) ... 82 Components of SNMP ... 83 SNMP Management Systems ... 83 SNMP Agents ... 84 Management Information Bases (MIBs) ... 85 SNMP Communities ... 85 SNMPv3 ... 86 Cram Quiz Answers ... 87 Dynamic Host Configuration Protocol (DHCP) ... 88 The DHCP Process ... 89 DHCP and DNS Suffixes ... 90 Cram Quiz Answers ... 91 What Next? ... 92 CHAPTER 3: Addressing and Routing ... 93 IP Addressing ... 94 IPv4 ... 95 IP Address Classes ... 95 Subnet Mask Assignment ... 96 Subnetting ... 97 Identifying the Differences Between IPv4 Public and Private Networks ... 98 Classless Interdomain Routing (CIDR) ... 100 Default Gateways ... 100 IPv4 Address Types... 102 IPv6 Addressing ... 102 Comparing IPv4 and IPv6 Addressing... 106 Assigning IP Addresses ... 107 Identifying MAC Addresses ... 110 Network Address Translation (NAT) and Port Address Translation (PAT) ... 112 Cram Quiz Answers ... 116 Understanding TCP/UDP Port Functions ... 117 Cram Quiz Answers ... 119 Managing TCP/IP Routing ... 120 The Default Gateway ... 120 Routing Tables... 121 Static Routing ... 122 Dynamic Routing ... 123 Routing Metrics ... 127 Cram Quiz Answers ... 128 Configuring Routers and Switches ... 129 Power over Ethernet (PoE)... 129 The Spanning Tree Protocol (STP) ... 130 Trunking... 131 Port Mirroring... 132 Port Authentication... 132 Cram Quiz Answers ... 133 What Next? ... 134 CHAPTER 4: Components and Devices ... 135 Common Network Devices ... 136 Bridges... 136 DHCP Server ... 138 Firewalls ... 139 Hubs ... 140 Media Converters... 141 Modems ... 142 Network Cards ... 142 Routers... 145 Switches ... 146 Wireless Access Points... 149 Encryption Devices... 150 Cram Quiz Answers ... 152 Specialized Network Devices ... 153 Bandwidth Shaper... 154 Content Filter ... 155 Load Balancer ... 155 Multilayer and Content Switches ... 155 Proxy Server ... 156 VPN Concentrator ... 158 Network Devices Summary ... 159 Cram Quiz Answers ... 161 Virtual Network Components... 162 Virtual Desktops... 162 Virtual Servers ... 163 Virtual Switches ... 163 Virtual PBX... 164 Onsite Versus Offsite... 164 Network as a Service (NaaS) ... 165 Cram Quiz Answers ... 166 What Next? ... 166 CHAPTER 5: Installation and Configuration... 167 Creating a SOHO Network ... 168 Cram Quiz Answers ... 174 WAN Technologies... 175 Switching Methods ... 175 Integrated Services Digital Network (ISDN) ... 178 T-carrier Lines... 180 SONET/OCx Levels... 182 X.25 and Frame Relay ... 183 Asynchronous Transfer Mode (ATM) ... 186 Summary of WAN Technologies ... 187 Cram Quiz Answers ... 189 Internet Access Technologies ... 191 DSL Internet Access ... 192 Cable Internet Access ... 195 Broadband Security Considerations ... 197 POTS Internet Access ... 198 The Public Switched Telephone Network (PSTN) ... 200 Satellite Internet Access ... 201 Wireless Internet Access ... 202 Cellular ... 204 Cram Quiz Answers ... 206 What Next? ... 207 CHAPTER 6: Cabling and Wiring ... 209 General Media Considerations ... 210 Broadband Versus Baseband Transmissions ... 211 Simplex, Half Duplex, and Full Duplex Modes ... 212 Media Interference ... 212 Attenuation ... 213 Data Transmission Rates ... 213 Types of Network Media ... 214 Types of Media Connectors ... 221 Media Converters... 226 568A and 568B Wiring Standards ... 227 Straight-Through Versus Crossover Cables ... 228 Rollover and Loopback Cables ... 230 Components of Wiring Distribution... 231 Cram Quiz Answers ... 243 Comparing and Contrasting LAN Technologies ... 244 IEEE 802.2 Standard... 245 802.3 Ethernet Standards ... 249 Cram Quiz Answers ... 257 What Next? ... 258 CHAPTER 7: Wireless ... 259 Understanding Wireless Basics ... 260 Wireless Access Points (APs)... 261 Wireless Antennas ... 264 Wireless Radio Channels ... 268 Data Rate Versus Throughput... 271 Beacon Management Frame ... 272 Spread-Spectrum Technology ... 273 Orthogonal Frequency Division Multiplexing... 274 Infrared Wireless Networking... 274 Establishing Communications Between Wireless Devices ... 275 Configuring the Wireless Connection... 278 Cram Quiz Answers ... 283 802.11 Wireless Standards ... 284 The Magic Behind 802.11n ... 285 A Summary of 802.11 Wireless Standards ... 286 Cram Quiz Answers ... 288 Securing Wireless Networks... 289 Wired Equivalent Privacy (WEP) ... 290 Wi-Fi Protected Access (WPA) ... 292 WPA2 ... 293 WPA Enterprise... 294 Cram Quiz Answers ... 296 Wireless Troubleshooting Checklist ... 298 Factors Affecting Wireless Signals ... 300 Cram Quiz Answers ... 302 What Next? ... 302 CHAPTER 8: Network Management ... 303 Documentation Management ... 305 Wiring Schematics ... 307 Physical and Logical Network Diagrams ... 310 Baselines... 313 Policies, Procedures, Configurations, and Regulations ... 314 Cram Quiz Answers ... 321 Monitoring Network Performance... 322 Common Reasons to Monitor Networks ... 323 Packet Sniffers ... 324 Throughput Testing ... 325 Port Scanners ... 327 Network Performance, Load, and Stress Testing ... 329 Tracking Event Logs ... 331 Cram Quiz Answers ... 337 Networking Tools... 338 Wire Crimpers, Strippers, and Snips... 339 Voltage Event Recorder ... 340 Environmental Monitors ... 341 Toner Probes ... 342 Protocol Analyzer... 343 Media/Cable Testers ... 344 TDR and OTDR ... 344 Multimeter ... 345 Network Qualification Tester ... 346 Butt Set ... 346 Wireless Detection ... 347 Cram Quiz Answers ... 349 Working with Command-Line Utilities ... 350 The Trace Route Utility (tracert/traceroute) ... 352 ping ... 355 ARP... 360 The netstat Command... 363 nbtstat ... 369 The ipconfig Command... 370 ifconfig... 372 nslookup... 373 dig... 375 The host Command ... 376 The route Utility ... 376 Cram Quiz Answers ... 379 What Next? ... 380 CHAPTER 9: Network Optimization ... 381 Uptime and Fault Tolerance ... 382 Types of Fault Tolerance ... 384 Link Redundancy ... 392 Common Address Redundancy Protocol (CARP) ... 393 Using Uninterruptible Power Supplies (UPSs) ... 393 Cram Quiz Answers ... 396 Disaster Recovery... 397 Full Backups ... 398 Differential Backups ... 398 Incremental Backups ... 399 Tape Rotations... 400 Backup Best Practices ... 401 Hot and Cold Spares... 401 Hot, Warm, and Cold Sites ... 403 Cram Quiz Answers ... 406 Network Optimization Strategies... 407 Quality of Service (QoS) ... 407 Traffic Shaping... 408 Caching Engines ... 409 Cram Quiz Answers ... 411 What Next? ... 412 CHAPTER 10: Network Security ... 413 Tunneling, Encryption, and Access Control ... 414 Internet Security Association and Key Management Protocol (ISAKMP)... 415 Point-to-Point Tunneling Protocol (PPTP) ... 415 Layer 2 Tunneling Protocol (L2TP)... 416 IPSec ... 417 Site-to-Site and Client-to-Site... 418 Overview of Access Control ... 418 Remote-Access Protocols and Services ... 421 Remote-Control Protocols ... 424 MAC Filtering ... 425 TCP/IP Filtering ... 426 Cram Quiz Answers ... 427 Authentication, Authorization, and Accounting (AAA) ... 429 Passwords and Password Policies ... 431 Kerberos Authentication ... 433 Public Key Infrastructure ... 436 RADIUS and TACACS+ ... 439 Remote Authentication Protocols... 440 Secured Versus Unsecured Protocols ... 442 Adding Physical Security to the Mix ... 443 Two-factor and Multifactor Authentication ... 445 Cram Quiz Answers ... 448 Managing Common Security Threats ... 449 Viruses ... 450 Worms and Trojan Horses ... 451 Denial of Service and Distributed Denial of Service Attacks ... 452 Other Common Attacks... 454 An Ounce of Prevention ... 456 Cram Quiz Answers ... 459 Firewalls and Other Appliances ... 460 Stateful and Stateless Firewalls ... 462 Packet-Filtering Firewalls... 463 Circuit-Level Firewalls ... 465 Application Layer Firewalls ... 465 Comparing Firewall Types ... 465 Firewall Wrap-Up ... 466 Demilitarized Zones (Perimeter Network) ... 466 Other Security Devices ... 467 Cram Quiz Answers ... 473 What Next? ... 474 CHAPTER 11: Network Troubleshooting ... 475 Troubleshooting Steps and Procedures ... 476 Identify the Problem ... 477 Establish a Theory of Probable Cause... 478 Test the Theory to Determine Cause ... 479 Establish a Plan of Action... 479 Implement the Solution or Escalate ... 480 Verify Full System Functionality ... 481 Document the Findings, Actions, and Outcomes... 482 Cram Quiz Answers ... 484 Troubleshooting the Network ... 485 Common Problems to Be Aware Of ... 485 Troubleshooting Wiring ... 490 Wiring Issues... 492 Troubleshooting Infrastructure Hardware ... 496 Configuring and Troubleshooting Client Connectivity ... 498 Troubleshooting an Incorrect VLAN ... 503 Topology Errors... 504 Cram Quiz Answers ... 510 What Next? ... 511 Practice Exam 1 ... 513 Exam Questions ... 513 Answers to Practice Exam 1... 537 Answers at a Glance ... 537 Answers and Explanations ... 538 Practice Exam 2 ... 561 Exam Questions ... 561 Answers to Practice Exam 2... 585 Answers at a Glance ... 585 Answers and Explanations ... 586 Glossary ... 607
