CCENT/CCNA ICND1 100-105 Official Cert Guide
Cisco Press
978-1-58720-580-4 (ISBN)
Trust the best-selling Official Cert Guide series from Cisco Press to help you learn, prepare, and practice for exam success. They are built with the objective of providing assessment, review, and practice to help ensure you are fully prepared for your certification exam.
CCENT/CCNA ICND1 100-105 Official Cert Guide presents you with an organized test-preparation routine through the use of proven series elements and techniques. “Do I Know This Already?” quizzes open each chapter and enable you to decide how much time you need to spend on each section. Exam topic lists make referencing easy. Chapter-ending Exam Preparation Tasks help you drill on key concepts you must know thoroughly.
· Master Cisco CCENT/CCNA ICND1 100-105 exam topics
· Assess your knowledge with chapter-opening quizzes
· Review key concepts with exam preparation tasks
· Practice with realistic exam questions on the CD-ROM
CCENT/CCNA ICND1 100-105 Official Cert Guide from Cisco Press enables you to succeed on the exam the first time and is the only self-study resource approved by Cisco.
Best-selling author and expert instructor Wendell Odom shares preparation hints and test-taking tips, helping you identify areas of weakness and improve both your conceptual knowledge and hands-on skills.
This complete study package includes
· A test-preparation routine proven to help you pass the exams
· Do I Know This Already? quizzes, which enable you to decide how much time you need to spend on each section
· Chapter-ending and part-ending exercises, which help you drill on key concepts you must know thoroughly
· Troubleshooting sections, which help you master the complex scenarios you will face on the exam
· The powerful Pearson IT Certification Practice Test software, complete with hundreds of well-reviewed, exam-realistic questions, customization options, and detailed performance reports
· A free copy of the CCENT ICND1 100-105 Network Simulator Lite software, complete with meaningful lab exercises that help you hone your hands-on skills with the command-line interface for routers and switches
· Links to a series of hands-on config labs developed by the author
· Online, interactive practice exercises that help you hone your knowledge
· More than 90 minutes of video mentoring from the author
· A final preparation chapter, which guides you through tools and resources to help you craft your review and test-taking strategies
· &
Wendell Odom, CCIE No. 1624 (Emeritus), has been in the networking industry since 1981. He has worked as a network engineer, consultant, systems engineer, instructor, and course developer; he currently works writing and creating certification study tools. This book is his 27th edition of some product for Pearson, and he is the author of all editions of the CCNA R&S and CCENT Cert Guides from Cisco Press. He has written books about topics from networking basics, certification guides throughout the years for CCENT, CCNA R&S, CCNA DC, CCNP ROUTE, CCNP QoS, and CCIE R&S.
Introduction xxxiv
Your Study Plan 2
Part I Networking Fundamentals 13
Chapter 1 Introduction to TCP/IP Networking 14
“Do I Know This Already?” Quiz 14
Foundation Topics 17
Perspectives on Networking 17
TCP/IP Networking Model 18
History Leading to TCP/IP 19
Overview of the TCP/IP Networking Model 20
TCP/IP Application Layer 22
TCP/IP Transport Layer 23
TCP/IP Network Layer 25
TCP/IP Link Layer (Data Link Plus Physical) 28
TCP/IP Model and Terminology 30
OSI Networking Model 32
Comparing OSI and TCP/IP 32
Describing Protocols by Referencing the OSI Layers 33
OSI Layers and Their Functions 33
OSI Layering Concepts and Benefits 35
OSI Encapsulation Terminology 35
Chapter 2 Fundamentals of Ethernet LANs 38
“Do I Know This Already?” Quiz 38
Foundation Topics 40
An Overview of LANs 40
Typical SOHO LANs 41
Typical Enterprise LANs 42
The Variety of Ethernet Physical Layer Standards 43
Consistent Behavior over All Links Using the Ethernet Data Link Layer 44
Building Physical Ethernet Networks with UTP 45
Transmitting Data Using Twisted Pairs 45
Breaking Down a UTP Ethernet Link 46
UTP Cabling Pinouts for 10BASE-T and 100BASE-T 48
UTP Cabling Pinouts for 1000BASE-T 51
Sending Data in Ethernet Networks 51
Ethernet Data-Link Protocols 51
Sending Ethernet Frames with Switches and Hubs 55
Chapter 3 Fundamentals of WANs 60
“Do I Know This Already?” Quiz 60
Foundation Topics 62
Leased-Line WANs 62
Positioning Leased Lines with LANs and Routers 62
Physical Details of Leased Lines 63
Data-Link Details of Leased Lines 66
Ethernet as a WAN Technology 69
Ethernet WANs that Create a Layer 2 Service 70
How Routers Route IP Packets Using Ethernet Emulation 71
Accessing the Internet 72
The Internet as a Large WAN 72
Internet Access (WAN) Links 73
Digital Subscriber Line 74
Cable Internet 76
Chapter 4 Fundamentals of IPv4 Addressing and Routing 78
“Do I Know This Already?” Quiz 78
Foundation Topics 81
Overview of Network Layer Functions 81
Network Layer Routing (Forwarding) Logic 81
How Network Layer Routing Uses LANs and WANs 83
IP Addressing and How Addressing Helps IP Routing 84
Routing Protocols 85
IPv4 Addressing 86
Rules for IP Addresses 86
Rules for Grouping IP Addresses 87
IP Subnetting 91
IPv4 Routing 93
IPv4 Host Routing 93
Router Forwarding Decisions and the IP Routing Table 94
IPv4 Routing Protocols 96
Other Network Layer Features 98
Using Names and the Domain Name System 98
The Address Resolution Protocol 99
ICMP Echo and the ping Command 100
Chapter 5 Fundamentals of TCP/IP Transport and Applications 102
“Do I Know This Already?” Quiz 102
Foundation Topics 104
TCP/IP Layer 4 Protocols: TCP and UDP 104
Transmission Control Protocol 105
User Datagram Protocol 113
TCP/IP Applications 114
Uniform Resource Identifiers 114
Finding the Web Server Using DNS 115
Transferring Files with HTTP 117
How the Receiving Host Identifies the Correct Receiving Application 118
Part I Review 120
Part II Implementing Basic Ethernet LANs 125
Chapter 6 Using the Command-Line Interface 126
“Do I Know This Already?” Quiz 126
Foundation Topics 128
Accessing the Cisco Catalyst Switch CLI 128
Cisco Catalyst Switches 128
Accessing the Cisco IOS CLI 129
CLI Help Features 136
The debug and show Commands 137
Configuring Cisco IOS Software 138
Configuration Submodes and Contexts 139
Storing Switch Configuration Files 141
Copying and Erasing Configuration Files 143
Chapter 7 Analyzing Ethernet LAN Switching 146
“Do I Know This Already?” Quiz 146
Foundation Topics 148
LAN Switching Concepts 148
Overview of Switching Logic 149
Forwarding Known Unicast Frames 150
Learning MAC Addresses 153
Flooding Unknown Unicast and Broadcast Frames 154
Avoiding Loops Using Spanning Tree Protocol 154
LAN Switching Summary 155
Verifying and Analyzing Ethernet Switching 156
Demonstrating MAC Learning 156
Switch Interfaces 158
Finding Entries in the MAC Address Table 159
Managing the MAC Address Table (Aging, Clearing) 161
MAC Address Tables with Multiple Switches 162
Chapter 8 Configuring Basic Switch Management 166
“Do I Know This Already?” Quiz 166
Foundation Topics 168
Securing the Switch CLI 168
Securing User Mode and Privileged Mode with Simple Passwords 169
Securing User Mode Access with Local Usernames and Passwords 173
Securing User Mode Access with External Authentication Servers 175
Securing Remote Access with Secure Shell 176
Enabling IPv4 for Remote Access 179
Host and Switch IP Settings 179
Configuring IPv4 on a Switch 181
Configuring a Switch to Learn Its IP Address with DHCP 182
Verifying IPv4 on a Switch 183
Miscellaneous Settings Useful in Lab 184
History Buffer Commands 184
The logging synchronous, exec-timeout, and no ip domain-lookup Commands 184
Chapter 9 Configuring Switch Interfaces 190
“Do I Know This Already?” Quiz 190
Foundation Topics 192
Configuring Switch Interfaces 192
Configuring Speed, Duplex, and Description 193
Configuring Multiple Interfaces with the interface range Command 195
Administratively Controlling Interface State with shutdown 195
Removing Configuration with the no Command 197
Autonegotiation 198
Port Security 202
Configuring Port Security 203
Verifying Port Security 205
Port Security Violation Actions 207
Port Security MAC Addresses as Static and Secure but Not Dynamic 207
Part II Review 212
Part III Ethernet LANs: Design, VLANs, and Troubleshooting 217
Chapter 10 Analyzing Ethernet LAN Designs 218
“Do I Know This Already?” Quiz 218
Foundation Topics 220
Analyzing Collision Domains and Broadcast Domains 220
Ethernet Collision Domains 220
Ethernet Broadcast Domains 224
Analyzing Campus LAN Topologies 227
Two-Tier Campus Design (Collapsed Core) 227
Three-Tier Campus Design (Core) 230
Topology Design Terminology 232
Analyzing LAN Physical Standard Choices 233
Ethernet Standards 234
Choosing the Right Ethernet Standard for Each Link 235
Wireless LANs Combined with Wired Ethernet 236
Chapter 11 Implementing Ethernet Virtual LANs 242
“Do I Know This Already?” Quiz 242
Foundation Topics 244
Virtual LAN Concepts 244
Creating Multiswitch VLANs Using Trunking 246
Forwarding Data Between VLANs 249
VLAN and VLAN Trunking Configuration and Verification 252
Creating VLANs and Assigning Access VLANs to an Interface 252
VLAN Trunking Protocol 257
VLAN Trunking Configuration 258
Implementing Interfaces Connected to Phones 262
Chapter 12 Troubleshooting Ethernet LANs 270
“Do I Know This Already?” Quiz 271
Foundation Topics 274
Perspectives on Applying Troubleshooting Methodologies 274
Troubleshooting on the Exams 275
A Deeper Look at Problem Isolation 275
Troubleshooting as Covered in This Book 277
Analyzing Switch Interface Status and Statistics 278
Interface Status Codes and Reasons for Nonworking States 278
Interface Speed and Duplex Issues 279
Common Layer 1 Problems on Working Interfaces 282
Predicting Where Switches Will Forward Frames 284
Predicting the Contents of the MAC Address Table 284
Analyzing the Forwarding Path 286
Analyzing Port Security Operations on an Interface 287
Troubleshooting Shutdown Mode and Err-disabled Recovery 288
Troubleshooting Restrict and Protect Modes 289
Analyzing VLANs and VLAN Trunks 292
Ensuring That the Right Access Interfaces Are in the Right VLANs 292
Access VLANs Not Being Defined 293
Access VLANs Being Disabled 294
Mismatched Trunking Operational States 294
Part III Review 298
Part IV IP Version 4 Addressing and Subnetting 301
Chapter 13 Perspectives on IPv4 Subnetting 302
“Do I Know This Already?” Quiz 302
Foundation Topics 304
Introduction to Subnetting 304
Subnetting Defined Through a Simple Example 305
Operational View Versus Design View of Subnetting 306
Analyze Subnetting and Addressing Needs 306
Rules About Which Hosts Are in Which Subnet 306
Determining the Number of Subnets 308
Determining the Number of Hosts per Subnet 309
One Size Subnet Fits All–Or Not 310
Make Design Choices 313
Choose a Classful Network 313
Choose the Mask 316
Build a List of All Subnets 320
Plan the Implementation 321
Assigning Subnets to Different Locations 322
Choose Static and Dynamic Ranges per Subnet 323
Chapter 14 Analyzing Classful IPv4 Networks 326
“Do I Know This Already?” Quiz 326
Foundation Topics 328
Classful Network Concepts 328
IPv4 Network Classes and Related Facts 328
Number of Hosts per Network 331
Deriving the Network ID and Related Numbers 332
Unusual Network IDs and Network Broadcast Addresses 334
Practice with Classful Networks 334
Practice Deriving Key Facts Based on an IP Address 335
Practice Remembering the Details of Address Classes 335
Additional Practice for This Chapter’s Processes 337
Answers to Earlier Practice Problems 337
Chapter 15 Analyzing Subnet Masks 340
“Do I Know This Already?” Quiz 340
Foundation Topics 342
Subnet Mask Conversion 342
Three Mask Formats 342
Converting Between Binary and Prefix Masks 343
Converting Between Binary and DDN Masks 344
Converting Between Prefix and DDN Masks 346
Practice Converting Subnet Masks 346
Identifying Subnet Design Choices Using Masks 347
Masks Divide the Subnet’s Addresses into Two Parts 348
Masks and Class Divide Addresses into Three Parts 349
Classless and Classful Addressing 350
Calculations Based on the IPv4 Address Format 350
Practice Analyzing Subnet Masks 352
Additional Practice for This Chapter’s Processes 354
Answers to Earlier Practice Problems 354
Chapter 16 Analyzing Existing Subnets 356
“Do I Know This Already?” Quiz 356
Foundation Topics 358
Defining a Subnet 358
An Example with Network 172.16.0.0 and Four Subnets 358
Subnet ID Concepts 360
Subnet Broadcast Address 361
Range of Usable Addresses 361
Analyzing Existing Subnets: Binary 362
Finding the Subnet ID: Binary 362
Finding the Subnet Broadcast Address: Binary 364
Binary Practice Problems 364
Shortcut for the Binary Process 366
Brief Note About Boolean Math 367
Finding the Range of Addresses 367
Analyzing Existing Subnets: Decimal 368
Analysis with Easy Masks 368
Predictability in the Interesting Octet 369
Finding the Subnet ID: Difficult Masks 370
Finding the Subnet Broadcast Address: Difficult Masks 372
Practice Analyzing Existing Subnets 374
A Choice: Memorize or Calculate 374
Additional Practice for This Chapter’s Processes 375
Answers to Earlier Practice Problems 376
Part IV Review 378
Part V Implementing IPv4 383
Chapter 17 Operating Cisco Routers 384
“Do I Know This Already?” Quiz 384
Foundation Topics 386
Installing Cisco Routers 386
Installing Enterprise Routers 386
Installing Internet Access Routers 389
Enabling IPv4 Support on Cisco Router Interfaces 390
Accessing the Router CLI 390
Router Interfaces 391
Interface Status Codes 393
Router Interface IP Addresses 394
Bandwidth and Clock Rate on Serial Interfaces 396
Router Auxiliary Port 398
Chapter 18 Configuring IPv4 Addresses and Static Routes 402
“Do I Know This Already?” Quiz 403
Foundation Topics 405
IP Routing 405
IPv4 Routing Process Reference 405
An Example of IP Routing 408
Configuring IP Addresses and Connected Routes 412
Connected Routes and the ip address Command 413
The ARP Table on a Cisco Router 415
Routing Between Subnets on VLANs 415
Configuring Static Routes 422
Static Route Configuration 422
Static Host Routes 424
Static Routes with No Competing Routes 425
Static Routes with Competing Routes 425
Static Default Routes 427
Troubleshooting Static Routes 428
Chapter 19 Learning IPv4 Routes with RIPv2 434
“Do I Know This Already?” Quiz 435
Foundation Topics 437
RIP and Routing Protocol Concepts 437
History of Interior Gateway Protocols 437
Comparing IGPs 438
Distance Vector Basics 439
Summarizing RIPv2 Features 442
Core RIPv2 Configuration and Verification 443
Configuring Core RIPv2 Features 443
RIPv2 Verification 447
Optional RIPv2 Configuration and Verification 452
Controlling RIP Updates with the passive-interface Command 452
Supporting Multiple Equal-Cost Routes with Maximum Paths 453
Understanding Autosummarization and Discontiguous Classful Networks 454
Verifying Optional RIP Features 456
RIPv2 Default Routes 458
Troubleshooting RIPv2 461
Symptoms with Missing and Incorrect network Commands 463
Issues Related to Passive Interfaces 464
Issues Related to auto-summary 465
RIP Issues Caused by Other Router Features 466
Summary of RIP Troubleshooting Issues 466
Chapter 20 DHCP and IP Networking on Hosts 470
“Do I Know This Already?” Quiz 471
Foundation Topics 473
Implementing and Troubleshooting DHCP 473
DHCP Concepts 473
DHCP Server Configuration on Routers 478
IOS DHCP Server Verification 480
Troubleshooting DHCP Services 481
Verifying Host IPv4 Settings 486
IP Address and Mask Configuration 487
Name Resolution with DNS 488
Default Routers 489
IPv4 Address Types 490
Review of Unicast (Class A, B, and C) IP Addresses 491
IP Broadcast Addresses 491
IPv4 Multicast Addresses (Class D Addresses) 492
Comparing and Contrasting IP Address Types 494
Part V Review 498
Part VI IPv4 Design and Troubleshooting 503
Chapter 21 Subnet Design 504
“Do I Know This Already?” Quiz 504
Foundation Topics 506
Choosing the Mask(s) to Meet Requirements 506
Review: Choosing the Minimum Number of Subnet and Host Bits 507
No Masks Meet Requirements 508
One Mask Meets Requirements 509
Multiple Masks Meet Requirements 510
The Formal Process 512
Practice Choosing Subnet Masks 513
Finding All Subnet IDs 513
First Subnet ID: The Zero Subnet 514
Finding the Pattern Using the Magic Number 515
A Formal Process with Less Than 8 Subnet Bits 515
Finding All Subnets with Exactly 8 Subnet Bits 519
Finding All Subnets with More Than 8 Subnet Bits 520
Practice Finding All Subnet IDs 523
Additional Practice for This Chapter’s Processes 524
Answers to Earlier Practice Problems 524
Chapter 22 Variable-Length Subnet Masks 528
“Do I Know This Already?” Quiz 528
Foundation Topics 530
VLSM Concepts and Configuration 530
Classless and Classful Routing Protocols 530
VLSM Configuration and Verification 531
Finding VLSM Overlaps 532
Designing Subnetting Plans with VLSM 533
An Example of Finding a VLSM Overlap 534
Practice Finding VLSM Overlaps 536
Adding a New Subnet to an Existing VLSM Design 536
An Example of Adding a New VLSM Subnet 537
Additional Practice for This Chapter’s Processes 539
Answers to Earlier Practice Problems 539
Chapter 23 IPv4 Troubleshooting Tools 542
“Do I Know This Already?” Quiz 543
Foundation Topics 543
Problem Isolation Using the ping Command 543
Ping Command Basics 543
Strategies and Results When Testing with the ping Command 544
Using Ping with Names and with IP Addresses 552
Problem Isolation Using the traceroute Command 553
traceroute Basics 553
Using traceroute to Isolate the Problem to Two Routers 557
Telnet and SSH 559
Common Reasons to Use the IOS Telnet and SSH Client 559
IOS Telnet and SSH Examples 560
Chapter 24 Troubleshooting IPv4 Routing 564
“Do I Know This Already?” Quiz 565
Foundation Topics 565
Problems Between the Host and the Default Router 565
Root Causes Based on a Host’s IPv4 Settings 566
Root Causes Based on the Default Router’s Configuration 570
Problems with Routing Packets Between Routers 574
IP Forwarding by Matching the Most Specific Route 575
Routing Problems Caused by Incorrect Addressing Plans 579
Pointers to Related Troubleshooting Topics 583
Part VI Review 586
Part VII IPv4 Services: ACLs and NAT 591
Chapter 25 Basic IPv4 Access Control Lists 592
“Do I Know This Already?” Quiz 592
Foundation Topics 594
IPv4 Access Control List Basics 594
ACL Location and Direction 594
Matching Packets 595
Taking Action When a Match Occurs 596
Types of IP ACLs 596
Standard Numbered IPv4 ACLs 597
List Logic with IP ACLs 598
Matching Logic and Command Syntax 599
Implementing Standard IP ACLs 602
Troubleshooting and Verification Tips 606
Practice Applying Standard IP ACLs 607
Practice Building access-list Commands 608
Reverse Engineering from ACL to Address Range 608
Additional Practice for This Chapter’s Processes 611
Answers to Earlier Practice Problems 612
Chapter 26 Advanced IPv4 Access Control Lists 614
“Do I Know This Already?” Quiz 615
Foundation Topics 616
Extended Numbered IP Access Control Lists 616
Matching the Protocol, Source IP, and Destination IP 617
Matching TCP and UDP Port Numbers 618
Extended IP ACL Configuration 621
Practice Building access-list Commands 624
Named ACLs and ACL Editing 625
Named IP Access Lists 625
Editing ACLs Using Sequence Numbers 627
Numbered ACL Configuration Versus Named ACL Configuration 629
ACL Implementation Considerations 630
Troubleshooting with IPv4 ACLs 631
Analyzing ACL Behavior in a Network 631
ACL Interactions with Router-Generated Packets 637
Answers to Earlier Practice Problems 641
Chapter 27 Network Address Translation 642
“Do I Know This Already?” Quiz 642
Foundation Topics 645
Perspectives on IPv4 Address Scalability 645
CIDR 645
Private Addressing 646
Network Address Translation Concepts 647
Static NAT 648
Dynamic NAT 650
Overloading NAT with Port Address Translation 652
NAT Configuration and Troubleshooting 653
Static NAT Configuration 653
Dynamic NAT Configuration 655
Dynamic NAT Verification 657
NAT Overload (PAT) Configuration 660
NAT Troubleshooting 662
Part VII Review 666
Part VIII IP Version 6 671
Chapter 28 Fundamentals of IP Version 6 672
“Do I Know This Already?” Quiz 672
Foundation Topics 674
Introduction to IPv6 674
IPv6 Addressing Formats and Conventions 680
Additional Practice for This Chapter’s Processes 686
Answers to Earlier Practice Problems 687
Chapter 29 IPv6 Addressing and Subnetting 688
“Do I Know This Already?” Quiz 688
Foundation Topics 690
Global Unicast Addressing Concepts 690
A Brief Review of Public and Private IPv4 Addresses 690
The IPv6 Global Routing Prefix 693
Address Ranges for Global Unicast Addresses 695
IPv6 Subnetting Using Global Unicast Addresses 696
Assigning Addresses to Hosts in a Subnet 700
Unique Local Unicast Addresses 701
Subnetting with Unique Local IPv6 Addresses 701
The Need for Globally Unique Local Addresses 702
Chapter 30 Implementing IPv6 Addressing on Routers 704
“Do I Know This Already?” Quiz 705
Foundation Topics 706
Implementing Unicast IPv6 Addresses on Routers 706
Static Unicast Address Configuration 707
Dynamic Unicast Address Configuration 715
Special Addresses Used by Routers 715
Link-Local Addresses 716
IPv6 Multicast Addresses 719
Miscellaneous IPv6 Addresses 723
IPv6 Addressing Configuration Summary 723
Additional Practice for This Chapter’s Processes 725
Answers to Earlier Practice Problems 726
Chapter 31 Implementing IPv6 Addressing on Hosts 728
“Do I Know This Already?” Quiz 728
Foundation Topics 730
The Neighbor Discovery Protocol 730
Discovering Routers with NDP RS and RA 731
Discovering Addressing Info for SLAAC with NDP RS and RA 732
Discovering Neighbor Link Addresses with NDP NS and NA 733
Discovering Duplicate Addresses Using NDP NS and NA 734
NDP Summary 735
Dynamic Configuration of Host IPv6 Settings 735
Dynamic Configuration Using Stateful DHCP and NDP 736
Using Stateless Address Auto Configuration 739
Troubleshooting IPv6 Addressing 741
Verifying Host IPv6 Connectivity from Hosts 741
Verifying Host Connectivity from Nearby Routers 744
Chapter 32 Implementing IPv6 Routing 750
“Do I Know This Already?” Quiz 750
Foundation Topics 752
Connected and Local IPv6 Routes 752
Rules for Connected and Local Routes 753
Example of Connected IPv6 Routes 753
Examples of Local IPv6 Routes 755
Static IPv6 Routes 756
Static Routes Using the Outgoing Interface 756
Static Routes Using Next-Hop IPv6 Address 758
Static Default Routes 760
Static IPv6 Host Routes 761
Floating Static IPv6 Routes 762
Default Routes with SLAAC on Router Interfaces 763
Troubleshooting Static IPv6 Routes 765
Part VIII Review 772
Part IX Network Device Management 777
Chapter 33 Device Management Protocols 778
“Do I Know This Already?” Quiz 779
Foundation Topics 780
System Message Logging (Syslog) 780
Sending Messages in Real Time to Current Users 780
Storing Log Messages for Later Review 781
Log Message Format 782
Log Message Severity Levels 783
Configuring and Verifying System Logging 784
The debug Command and Log Messages 786
Network Time Protocol (NTP) 787
Setting the Time and Timezone 788
Implementing NTP Clients, Servers, and Client/Server Mode 789
NTP Using a Loopback Interface for Better Availability 791
Analyzing Topology Using CDP and LLDP 793
Examining Information Learned by CDP 793
Configuring and Verifying CDP Itself 796
Implementing Link Layer Discovery Protocol 797
Chapter 34 Device Security Features 802
“Do I Know This Already?” Quiz 802
Foundation Topics 804
Securing IOS Passwords 804
Encrypting Older IOS Passwords with service password-encryption 805
Encoding the Enable Passwords with Hashes 806
Hiding the Passwords for Local Usernames 810
Cisco Device Hardening 810
Configuring Login Banners 810
Securing Unused Switch Interfaces 812
Controlling Telnet and SSH Access with ACLs 813
Firewalls 814
Chapter 35 Managing IOS Files 820
“Do I Know This Already?” Quiz 820
Foundation Topics 822
Managing Cisco IOS Images and Upgrades 822
The IOS File System 822
Upgrading IOS Images 824
The Cisco IOS Software Boot Sequence 830
Password Recovery 835
The General Ideas Behind Cisco Password Recovery/Reset 836
A Specific Password Reset Example 837
Managing Configuration Files 839
Copying and Erasing Configuration Files 839
Initial Configuration (Setup Mode) 843
Chapter 36 IOS License Management 848
“Do I Know This Already?” Quiz 848
Foundation Topics 850
IOS Packaging 850
IOS Images per Model, Series, and per Software Version/Release 850
Original Packaging: One IOS Image per Feature Set Combination 851
New IOS Packaging: One Universal Image with All Feature Sets 851
IOS Software Activation with Universal Images 852
The Future: Cisco ONE Licensing 854
Managing Software Activation with Cisco License Manager 854
Manually Activating Software Using Licenses 855
Example of Manually Activating a License 857
Right-to-Use Licenses 861
Part IX Review 864
Part X Final Review 867
Chapter 37 Final Review 868
Advice About the Exam Event 868
Learn the Question Types Using the Cisco Certification Exam Tutorial 868
Think About Your Time Budget Versus Number of Questions 869
A Suggested Time-Check Method 870
Miscellaneous Pre-Exam Suggestions 870
Exam-Day Advice 871
Reserve the Hour After the Exam in Case You Fail 871
Exam Review 872
Practice Subnetting and Other Math-Related Skills 873
Take Practice Exams 874
Find Knowledge Gaps Through Question Review 877
Practice Hands-On CLI Skills 879
Assess Whether You Are Ready to Pass (and the Fallacy of Exam Scores) 881
Study Suggestions After Failing to Pass 882
Other Study Tasks 883
Final Thoughts 884
Part XI Appendixes 887
Appendix A Numeric Reference Tables 889
Appendix B CCENT/CCNA ICND1 100-105 Exam Updates 895
Glossary 897
DVD Appendixes
Appendix C Answers to the “Do I Know This Already?” Quizzes
Appendix D Practice for Chapter 14: Analyzing Classful IPv4 Networks
Appendix E Practice for Chapter 15: Analyzing Subnet Masks
Appendix F Practice for Chapter 16: Analyzing Existing Subnets
Appendix G Practice for Chapter 21: Subnet Design
Appendix H Practice for Chapter 22: Variable-Length Subnet Masks
Appendix I Practice for Chapter 25: Basic IPv4 Access Control Lists
Appendix J Practice for Chapter 28: Fundamentals of IP Version 6
Appendix K Practice for Chapter 30: Implementing IPv6 Addressing on Routers
Appendix L Mind Map Solutions
Appendix M Study Planner
Appendix N Classless Inter-domain Routing
Appendix O Route Summarization
Appendix P Implementing Point-to-Point WANs
Appendix Q Topics from Previous Editions
Appendix R Exam Topics Cross Reference
9781587205804 TOC 5/13/2016
| Erscheint lt. Verlag | 2.6.2016 |
|---|---|
| Reihe/Serie | Official Cert Guide |
| Verlagsort | Indianapolis |
| Sprache | englisch |
| Maße | 200 x 240 mm |
| Gewicht | 1760 g |
| Themenwelt | Informatik ► Weitere Themen ► Zertifizierung |
| ISBN-10 | 1-58720-580-7 / 1587205807 |
| ISBN-13 | 978-1-58720-580-4 / 9781587205804 |
| Zustand | Neuware |
| Haben Sie eine Frage zum Produkt? |
aus dem Bereich
