[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-467007-105":3,"detail-sidebar-cat-0-en-105":81,"doc-detail-467007-en":130},{"code":4,"msg":5,"data":6},0,"ok",{"site_id":7,"language":8,"slug":9,"title":10,"keywords":11,"description":12,"schema_data":13,"social_meta":74,"head_meta":76,"extra_data":78,"updated_unix":80},105,"en","ccna-cram-sheet-networking-fundamentals-ccna-exam-cram","CCNA Cram Sheet - Networking Fundamentals - CCNA Exam Cram","","CCNA Cram Sheet for exam review focusing on core networking fundamentals and study recall. Summarizes OSI and TCP/IP model layer functions, the PDUs for lower layers, and key UDP versus TCP behavioral differences including overhead, connection orientation, ordering, reliability, and multiplexing via port numbers. Includes common protocols mapped to OSI layers, a well-known port numbers reference table, and a detailed exam-oriented table of contents covering network components, topology, cabling, IPv4/IPv6, wireless, virtualization, switching, VLANs, discovery protocols, and spanning tree concepts.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/exam/","Exam",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/ccna-cram-sheet-networking-fundamentals-ccna-exam-cram/467007/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/ccna-cram-sheet-networking-fundamentals-ccna-exam-cram/467007.png","ImageObject",300,407,{"name":42,"@type":43},"asba","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-02","2026-09-30",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",9,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What are the OSI and TCP/IP model layers covered in the cram sheet?","Question",{"text":63,"@type":64},"The document lists OSI layers as Application, Presentation, Session, Transport, Network, Data Link, and Physical, and TCP/IP layers as Application, Transport, Internet, and Network Interface.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How does UDP differ from TCP according to this reference?",{"text":68,"@type":64},"UDP is connectionless with very little overhead and is often used for voice and video traffic; it can multiplex with port numbers. TCP is connection-oriented, has more overhead, and uses flow control, sequencing, and acknowledgements to ensure reliable, ordered delivery while also multiplexing with port numbers.",{"name":70,"@type":61,"acceptedAnswer":71},"Which protocol-to-layer and port number references are included for quick study?",{"text":72,"@type":64},"The cram sheet provides a mapping of common protocols to OSI layers (e.g., FTP, HTTP, SMTP, TCP/UDP-based examples) and a table of well-known port numbers showing which transport (TCP or UDP) and protocol use each port.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},467007,1790820207,{"code":4,"msg":82,"data":83},"success",[84,88,92,95,100,105,110,115,119,122,126],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":93,"slug":94},70,"exam",{"id":96,"doc_module":4,"doc_module_name":25,"category_name":97,"show_sort_weight":98,"slug":99},5,"Comic",60,"comic",{"id":101,"doc_module":4,"doc_module_name":25,"category_name":102,"show_sort_weight":103,"slug":104},6,"Technology",50,"technology",{"id":106,"doc_module":4,"doc_module_name":25,"category_name":107,"show_sort_weight":108,"slug":109},7,"Healthcare",40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":55,"doc_module":4,"doc_module_name":25,"category_name":116,"show_sort_weight":117,"slug":118},"Religion & Spirituality",20,"religion-spirituality",{"id":117,"doc_module":4,"doc_module_name":25,"category_name":120,"show_sort_weight":117,"slug":121},"World Cup","world-cup",{"id":123,"doc_module":4,"doc_module_name":25,"category_name":124,"show_sort_weight":123,"slug":125},10,"Lifestyle","lifestyle",{"id":127,"doc_module":4,"doc_module_name":25,"category_name":128,"show_sort_weight":96,"slug":129},19,"General","general",{"code":4,"msg":82,"data":131},{"doc_id":79,"user_id":132,"nickname":42,"user_avatar":133,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":134,"file_id":135,"file_url":136,"file_type":137,"file_size":138,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":139,"language":140,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":141,"faqs":142,"seo_title":143,"seo_description":12,"update_tm":144,"read_time":145},3985747872567,"https://ap-avatar.wpscdn.com/davatar_276721f389ce27ea32af1340a28f341c","The CCNA Cram Sheet  \nThis Cram Sheet contains key information as a final preparation tool for the CCNA exam. Review this information as the last thing you do before you enter the testing center, paying special attention to those areas in which you think that you need the most review. Enjoy this additional study aid! Networking Fundamentals   \nThe OSI and TCP/IP Models  \nOSI—the layers are Application, Presentation, Session, Transport, Network, Data Link, Physical; TCP/IP—the layers are Application, Transport, Internet, Network Interface.  \nThe PDUs of the Bottom Four Layers  \nSegments, Packets, Frames, Bits  \n\n| \u003Cbr>Protocols at Various Layers of the OSI Model\u003Cbr>Layer Examples |  |\n| --- | --- |\n| Application | FTP, [HTTP](HTTP), SMTP |\n| Presentation | JPEG, MPEG |\n| Session | NetBIOS, PPTP |\n| Transport | TCP, UDP |\n| Network | IP, ICMP |\n| Data link | PPP, ATM |\n| Physical | Ethernet, USB |\n\nUDP is connectionless; UDP has very little overhead; UDP is often used for voice and  \nvideo traffic forms; UDP can multiplex using port numbers to work with multiple applications.  \nTCP is connection-oriented; TCP has more overhead than UDP; TCP uses features like flow control, sequencing and acknowledgements to ensure reliable and ordered delivery of segments; TCP can multiplex using port numbers to work with multiple applications.  \n\n| APPLICATIONS | THAT | USE | TC | P/UDP |  |\n| --- | --- | --- | --- | --- | --- |\n| TCP |  |  |  | UDP |  |\n| [HTTP](HTTP) |  |  |  | DHCP |  |\n| FTP |  |  |  | RIP |  |\n| Telnet |  |  |  | SNMP |  |\n| SSH |  |  |  | TFTP |  |\n| SMTP |  |  |  | *DNS |  |\n\n\n| \u003Cbr>Well-Known Port Numbers\u003Cbr>Port Number (s) TCP or UDP? Protocol |  |  |\n| --- | --- | --- |\n| 20 | TCP | FTP data |\n| 21 | TCP | FTP control |\n| 22 | TCP | SSH |\n| 23 | TCP | Telnet |\n| 25 | TCP | SMTP |\n| 53 | UDP | DNS |\n| 67, 68 | UDP | DHCP |\n| 69 | UDP | TFTP |\n| 80 | TCP | [HTTP](HTTP) |\n| 110 | TCP | POP3 |\n| 161 | UDP | SNMP |\n| 443 | TCP | SSL/TLS |\n| 514 | UDP | Syslog |\n| 520 | UDP | RIP |\n\nCCNA 200-301 Exam Cram  \nTable of Contents  \nCover  \nTitle Page Copyright Page Credits  \nContents at a Glance Table of Contents Preface  \nAbout the Author Dedication Acknowledgments  \nAbout the Technical Reviewer Introduction  \nPart I: Network Fundamentals  \nCHAPTER 1: The Role and Function of Network Components  \nTopic: Explain the role and function of network components  \nTopic: Next-generation firewalls and IPS  \nTopic: Controllers (Cisco DNA Center and WLC) Cisco DNA Center  \nWireless LAN Controllers (WLCs)  \nReview Questions  \nTable of Contents  \nAnswers to Review Questions  \nAdditional Resources  \nCHAPTER 2: The Characteristics of Network Topology Architectures  \nTopic: 2-tier architectures and 2-tier spine-leaf  \nThe 2-Tier Spine-Leaf Topic: WANs and SOHOs  \nWANs  \nSOHOs  \nTopic: On-premises and cloud  \nOn-Premises  \nCloud  \nReview Questions  \nAnswers to Review Questions  \nAdditional Resources  \nCHAPTER 3: Physical Interfaces and Cabling Types Topic: Single-mode fiber, multimode fiber, copper  \nMultimode Versus Single-Mode Fiber  \nEthernet Shared Media Versus Point-to-Point  \nPower over Ethernet (PoE)  \nSerial Connections  \nTopic: Troubleshoot interface and cable issues (collisions, errors, duplex, speed)  \nReview Questions  \nAnswers to Review Questions  \nAdditional Resources  \nCHAPTER 4: Describe TCP and UDP  \nTopic: Compare and contrast the OSI and TCP/IP models  \nTopic: Compare and contrast TCP and UDP  \nTable of Contents  \nReview Questions  \nAnswers to Review Questions  \nAdditional Resources  \nCHAPTER 5: Configure and Verify IPv4 Addressing and Subnetting  \nTopic: Configure, verify, and troubleshoot IPv4 addressing and subnetting  \nTopic: Compare and contrast IPv4 address types  \nTopic: Describe the need for private IPv4 addressing  \nTopic: Verify IP parameters for client OS (Windows, Mac OS, Linux)  \nReview Questions  \nAnswers to Review Questions  \nHands-On Lab Practice Assignment  \nConfigure and Verify IPv4 Addressing  \nAdditional R","cbCaiucuKiTtO3Cv","https://ap.wps.com/l/cbCaiucuKiTtO3Cv","pdf",455296,13,"English","# Networking Fundamentals\n## The OSI and TCP/IP Models\n## The PDUs of the Bottom Four Layers\n## UDP vs TCP\n## Protocols at Various Layers of the OSI Model\n## Well-Known Port Numbers\n# CCNA 200-301 Exam Cram\n## Part I: Network Fundamentals\n### Chapter 1: The Role and Function of Network Components\n### Chapter 2: The Characteristics of Network Topology Architectures\n### Chapter 3: Physical Interfaces and Cabling Types\n### Chapter 4: Describe TCP and UDP\n### Chapter 5: Configure and Verify IPv4 Addressing and Subnetting\n### Chapter 6: Configure IPv6\n### Chapter 7: Describe Wireless Principles\n### Chapter 8: Explain Virtualization Fundamentals\n### Chapter 9: Describe Switching Concepts\n## Part II: Network Access\n### Chapter 10: Configure and Verify VLANs and Interswitch Connectivity\n### Chapter 11: Configure and Verify Layer 2 Discovery\n### Chapter 12: Describe Rapid PVST+ Spanning Tree Protocol\n### Chapter 13: Compare Cisco Wireless Architectures and AP Modes","[{\"question\":\"What are the OSI and TCP/IP model layers covered in the cram sheet?\",\"answer\":\"The document lists OSI layers as Application, Presentation, Session, Transport, Network, Data Link, and Physical, and TCP/IP layers as Application, Transport, Internet, and Network Interface.\"},{\"question\":\"How does UDP differ from TCP according to this reference?\",\"answer\":\"UDP is connectionless with very little overhead and is often used for voice and video traffic; it can multiplex with port numbers. TCP is connection-oriented, has more overhead, and uses flow control, sequencing, and acknowledgements to ensure reliable, ordered delivery while also multiplexing with port numbers.\"},{\"question\":\"Which protocol-to-layer and port number references are included for quick study?\",\"answer\":\"The cram sheet provides a mapping of common protocols to OSI layers (e.g., FTP, HTTP, SMTP, TCP/UDP-based examples) and a table of well-known port numbers showing which transport (TCP or UDP) and protocol use each port.\"}]","CCNA Cram Sheet - Networking Fundamentals - CCNA Exam Cram | PDF",1790772187,33]