book

CCNA 200-301 Official Cert Guide Library, 2nd Edition

by Wendell Odom, Jason Gooley, David Hucaby

July 2024

Intermediate to advanced

1854 pages

63h 6m

English

Cisco Press

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Cover Page

Cisco Certifications and the CCNABook FeaturesBook Organization, Chapters, and AppendicesAbout Building Hands-On SkillsAbout IP SubnettingFor More Information
A Brief Perspective on Cisco Certification ExamsFive Study Plan StepsThings to Do Before Starting the First ChapterGetting Started: Now
“Do I Know This Already?” QuizFoundation TopicsPerspectives on NetworkingTCP/IP Networking ModelData Encapsulation TerminologyChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsAn Overview of LANsBuilding Physical Ethernet LANs with UTPBuilding Physical Ethernet LANs with FiberSending Data in Ethernet NetworksChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsWide-Area NetworksIP RoutingOther Network Layer FeaturesChapter ReviewReview All the Key TopicsKey Terms You Should Know
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsUse Per-Chapter Interactive Review Elements
“Do I Know This Already?” QuizFoundation TopicsAccessing the Cisco Catalyst Switch CLIConfiguring Cisco IOS SoftwareChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsLAN Switching ConceptsVerifying and Analyzing Ethernet SwitchingChapter ReviewReview All the Key TopicsDo LabsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsSecuring the Switch CLIEnabling IPv4 for Remote AccessMiscellaneous Settings Useful in the LabChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo LabsCommand References
“Do I Know This Already?” QuizFoundation TopicsConfiguring Switch Interface Speed and DuplexManaging Switch Interface ConfigurationAnalyzing Switch Interface Status and StatisticsChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo LabsCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsLabsReview Appendix L on the Companion WebsiteWatch VideosUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsVirtual LAN ConceptsVLAN and VLAN Trunking Configuration and VerificationTroubleshooting VLANs and VLAN TrunksChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo LabsCommand References
“Do I Know This Already?” QuizFoundation TopicsSTP and RSTP BasicsDetails Specific to STP (and Not RSTP)Rapid STP ConceptsOptional STP FeaturesChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsUnderstanding RSTP Through ConfigurationIdentifying Optional STP FeaturesConfiguring Layer 2 EtherChannelChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsDig Deeper with Appendices on the Companion WebsiteWatch VideoUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsIntroduction to SubnettingAnalyze Subnetting and Addressing NeedsMake Design ChoicesPlan the ImplementationChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsClassful Network ConceptsPractice with Classful NetworksChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesAnswers to Earlier Practice ProblemsAnswers to Practice Problem 7 (from Table 12-5)Answers to Practice Problem 8 (from Table 12-5)Answers to Practice Problem 9 (from Table 12-5)
“Do I Know This Already?” QuizFoundation TopicsSubnet Mask ConversionIdentifying Subnet Design Choices Using MasksChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsDefining a SubnetAnalyzing Existing Subnets: BinaryAnalyzing Existing Subnets: DecimalPractice Analyzing Existing SubnetsChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsChoosing the Mask(s) to Meet RequirementsFinding All Subnet IDsChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesAnswers to Earlier Practice Problems
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsWatch VideoSubnetting Exercises
“Do I Know This Already?” QuizFoundation TopicsInstalling Cisco RoutersEnabling IPv4 Support on Cisco Router InterfacesChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsIP RoutingConfiguring IP Addresses and Connected RoutesConfiguring Static RoutesChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsVLAN Routing with Router 802.1Q TrunksVLAN Routing with Layer 3 Switch SVIsVLAN Routing with Layer 3 Switch Routed PortsVLAN Routing on a Router’s LAN Switch PortsChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsDynamic Host Configuration ProtocolIdentifying Host IPv4 SettingsChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsProblem Isolation Using the ping CommandProblem Isolation Using the traceroute CommandTelnet and SSHChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsWatch Video
“Do I Know This Already?” QuizFoundation TopicsComparing Dynamic Routing Protocol FeaturesOSPF Concepts and OperationOSPF Areas and LSAsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsImplementing OSPFv2 Using network CommandsImplementing OSPFv2 Using Interface SubcommandsChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsOSPF Network TypesAdditional Optional OSPFv2 FeaturesChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsOSPF Neighbor RelationshipsRoute SelectionChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsWatch Video
“Do I Know This Already?” QuizFoundation TopicsIntroduction to IPv6IPv6 Addressing Formats and ConventionsChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsGlobal Unicast Addressing ConceptsUnique Local Unicast AddressesChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsImplementing Unicast IPv6 Addresses on RoutersSpecial Addresses Used by RoutersChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesCommand ReferencesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsThe Neighbor Discovery ProtocolDynamic Configuration of Host IPv6 SettingsTroubleshooting Host IPv6 AddressingChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsConnected and Local IPv6 RoutesStatic IPv6 Network RoutesStatic Default, Host, and Floating Static IPv6 RoutesTroubleshooting Static IPv6 RoutesChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsWatch Video
The Purpose of This ChapterNews about the Next CCNA Exam ReleaseUpdated Technical Content
CCNA 200-301 Exam Topic OrderBook Chapter Order Versus CCNA 200-301 Exam Topics
Practice ProblemsAnswers
Mask Conversion ProblemsAnswers to Mask Conversion ProblemsMask Analysis ProblemsAnswers to Mask Analysis Problems
Practice ProblemsAnswers
Mask Design Practice ProblemsMask Design AnswersPractice Finding All Subnet IDs
Address Abbreviating and Expanding ProblemsCalculating the IPv6 Prefix ProblemsAnswers to Address Abbreviating and Expanding ProblemsAnswers to Calculating IPv6 Prefix Problems
EUI-64 and Solicited Node Multicast ProblemsAnswers to EUI-64 and Solicited Node Multicast Problems
IPv4 Address TypesBandwidth and Clock Rate on Serial InterfacesImplementing DHCPUsing traceroute to Isolate the Problem to Two RoutersDefault Routes with SLAAC on Router Interfaces
Foundation TopicsTroubleshooting STPTroubleshooting Layer 2 EtherChannelAnalyzing the Switch Data Plane Forwarding
Foundation TopicsVLSM Concepts and ConfigurationFinding VLSM OverlapsAdding a New Subnet to an Existing VLSM DesignAnswers to Earlier Practice ProblemsAnswers to Practice Finding VLSM Overlaps
Cover Page
Cisco Certifications and the CCNABook FeaturesBook Organization, Chapters, and AppendixesAbout Building Hands-On SkillsFor More Information
“Do I Know This Already?” QuizFoundation TopicsComparing Wired and Wireless NetworksWireless LAN TopologiesOther Wireless TopologiesWireless Bands and ChannelsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsAutonomous AP ArchitectureCloud-based AP ArchitectureSplit-MAC ArchitecturesComparing Cisco Wireless LAN Controller DeploymentsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsAnatomy of a Secure ConnectionWireless Client Authentication MethodsWireless Privacy and Integrity MethodsWPA, WPA2, and WPA3Chapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsConnecting a Cisco APAccessing a Cisco WLCConnecting a Cisco WLCConfiguring a WLANChapter ReviewReview All the Key Topics
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsWatch VideoUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsTCP/IP Layer 4 Protocols: TCP and UDPTCP/IP ApplicationsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsIPv4 Access Control List BasicsStandard Numbered IPv4 ACLsChapter ReviewReview All the Key TopicsKey Terms You Should KnowAdditional Practice for This Chapter’s ProcessesCommand ReferencesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsNamed ACLs and ACL EditingExtended IP Access Control ListsChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand ReferencesAnswers to Earlier Practice Problems
“Do I Know This Already?” QuizFoundation TopicsACLs and Network Infrastructure ProtocolsComparing ACLs in IOS and IOS XEChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsSecurity TerminologyCommon Security ThreatsControlling and Monitoring User AccessDeveloping a Security Program to Educate UsersChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsSecuring IOS PasswordsFirewalls and Intrusion Prevention SystemsChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo LabsCommand References
“Do I Know This Already?” QuizFoundation TopicsPort Security Concepts and ConfigurationPort Security Violation ModesChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo LabsCommand References
“Do I Know This Already?” QuizFoundation TopicsDHCP SnoopingDynamic ARP InspectionChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsDo LabsWatch VideosUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsSystem Message Logging (Syslog)Network Time Protocol (NTP)Analyzing Topology Using CDP and LLDPChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsNetwork Address Translation ConceptsNAT Configuration and TroubleshootingChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
“Do I Know This Already?” QuizFoundation TopicsIntroduction to QoSClassification and MarkingQueuingShaping and PolicingCongestion AvoidanceChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsFirst Hop Redundancy ProtocolsHot Standby Router ProtocolVRRP and GLBP ConceptsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsSimple Network Management ProtocolFTP and TFTPChapter ReviewReview All the Key TopicsKey Terms You Should KnowCommand References
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsLabsWatch VideoUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsAnalyzing Campus LAN TopologiesEthernet Physical Media and StandardsSmall Office/Home OfficePower over Ethernet (PoE)Chapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsMetro EthernetMultiprotocol Label Switching (MPLS)Internet VPNsChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsServer VirtualizationCloud Computing ServicesWAN Traffic Paths to Reach Cloud ServicesUnderstanding Cloud ManagementChapter ReviewReview All the Key TopicsKey Terms You Should Know
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsUse Per-Chapter Interactive Review
“Do I Know This Already?” QuizFoundation TopicsSDN and Controller-Based NetworksExamples of Network Programmability and SDNComparing Traditional Versus Controller-Based NetworksChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsCisco SD-Access Fabric, Underlay, and OverlayCisco Catalyst Center and Cisco SD-Access OperationCisco Catalyst Center as a Network Management PlatformArtificial Intelligence (AI), Machine Learning (ML), and Operational ManagementChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsREST-Based APIsData Serialization and JSONChapter ReviewReview All the Key TopicsKey Terms You Should Know
“Do I Know This Already?” QuizFoundation TopicsDevice Configuration Challenges and SolutionsAnsible and Terraform BasicsChapter ReviewReview All the Key TopicsKey Terms You Should KnowDo DevNet Labs
Repeat All DIKTA QuestionsAnswer Part Review QuestionsReview Key TopicsWatch videoUse Per-Chapter Interactive Review
The Purpose of This ChapterNews About the Next CCNA Exam ReleaseUpdated Technical Content
Advice About the Exam EventExam Review
CCNA 200-301 Exam Topic OrderBook Chapters, with Exam Topics Covered in Each
Troubleshooting with IPv4 ACLsImplementing HSRPNTP AddendumMetro EthernetMPLS VPNs
Practice ProblemsAnswers to Earlier Practice Problems

Content preview from CCNA 200-301 Official Cert Guide Library, 2nd Edition

Chapter 13 Analyzing Subnet Masks

This chapter covers the following exam topics:

1.0 Network Fundamentals

1.6 Configure and verify IPv4 addressing and subnetting

The subnet mask used in one or many subnets in an IP internetwork says a lot about the intent of the subnet design. First, the mask divides addresses into two parts: prefix and host, with the host part defining the size of the subnet (that is, the number of hosts in the subnet). Then, the class (A, B, or C) further divides the structure of addresses in a subnet, breaking the prefix part into the network and subnet parts. The subnet part defines the number of subnets that could exist inside one classful IP network, assuming that one mask is used throughout the classful network.

The subnet ...