[{"data":1,"prerenderedAt":-1},["ShallowReactive",2],{"doc-seo-289740-105":3,"doc-detail-289740-en":81,"detail-sidebar-cat-0-en-105":98},{"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","ccnaquestions-basic-questions","CCNAquestions - Basic Questions","","Set of CCNA basic review questions with multiple-choice answers and detailed explanations covering core Ethernet and Cisco networking concepts. Topics include MAC address structure and OUI meaning, broadcast and collision domain behavior across router and switch boundaries, IOS storage constraints in flash with system flash exhibit calculations, MTU interpretation at Layer 3, Ethernet duplex and CSMA/CD assumptions on shared vs switched media, shared-medium transmission scenarios, and MAC address purposes. Includes guidance for boot system IOS image sources via common storage and server options.",{"@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/ccnaquestions-basic-questions/289740/",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/ccnaquestions-basic-questions/289740.png","ImageObject",300,407,{"name":42,"@type":43},"Asher","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-11-04","2026-09-17",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",12,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What do the first 24 bits of a MAC address represent?","Question",{"text":63,"@type":64},"They are the OUI (Organizational Unique Identifier), assigned by IEEE, indicating the vendor/manufacturer for the network device.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How many broadcast and collision domains are formed in the described network?",{"text":68,"@type":64},"Broadcast domains are two (separated by the router). Collision domains are one on the left of the router and six on the right.",{"name":70,"@type":61,"acceptedAnswer":71},"What does MTU 1500 bytes mean in an Ethernet/L3 context?",{"text":72,"@type":64},"MTU defines the maximum Layer 3 packet size (in bytes) that can be transmitted onward; for MTU 1500 it is the maximum packet size of 1500 bytes.","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},289740,1790903857,{"code":4,"msg":82,"data":83},"success",{"doc_id":79,"user_id":84,"nickname":42,"user_avatar":85,"doc_module":4,"category_id":33,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":86,"file_id":87,"file_url":88,"file_type":89,"file_size":90,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":91,"language":92,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":93,"faqs":94,"seo_title":95,"seo_description":12,"update_tm":96,"read_time":97},687197207639,"https://ap-avatar.wpscdn.com/davatar_a8503ba1806abce46bf441b54a3ca4cd","CCNA– Basic Questions  \nQuestion 1  \nWhat is the first 24 bits in a MAC address called?  \nA. NIC  \nB. BIA  \nC. OUI  \nD. VAI  \nAnswer: C  \nExplanation  \nOrganizational Unique Identifier (OUI) is the first 24 bits ofa MAC address for a network device, which indicates the specific vendor for that device as assigned by the Institute of Electrical and Electronics Engineers, Incorporated (IEEE). This identifier uniquely identifies a vendor, manufacturer, or an organization.  \nQuestion 2  \nWhich of the following statements describe the network shown in the graphic? (Choose two)  \nA. There are two broadcast domains in the network.  \nB. There are four broadcast domains in the network.  \nC. There are six broadcast domains in the network.  \nD. There are four collision domains in the network.  \nE. There are five collision domains in the network.  \nF. There are seven collision domains in the network.  \nAnswer: A F  \nExplanation  \nOnly router can break up broadcast domains so in the exhibit there are 2 broadcast domains: from e0 interface to the left is a broadcast domain and from e1 interface to the right is another broadcast domain-> A is correct.  \nBoth router and switch can break up collision domains so there is only 1 collision domain on the left of the router (because hub doesn‘t break up collision domain) and there are 6 collision domains on the right of the router (1 collision domain from e1 interface to the switch + 5 collision domains for 5 PCs in Production) -> F is correct.  \nQuestion 3  \nRefer to the exhibit:  \nSystem flash director  \nFile Length Name/status  \n1 3802992 c827v-y6-mz.121-1.XB  \n[3803056 bytes used,4585552 available, 8388608 total] 8192K bytes of processor board System flash(Read/Write)  \nThe technician wants to upload a new IOS in the router while keeping the existing IOS. What is the maximum size of an IOS file that could be loaded if the original IOS is also kept in flash?  \nA. 3MB  \nB. 5MB  \nC. 7MB  \nD. 4MB  \nAnswer: D  \nExplanation  \nFrom the exhibit we learn there are 4585552 bytes (over 4MB) available so it is only enough space for an IOS file of 4MB. If bigger file is copied then the existing IOS file will be erased (overwritten) .  \nQuestion 4  \nRefer to the exhibit. What is the meaning of the output MTU 1500 bytes?  \nA. The maximum number of bytes that can traverse this interface per second is 1500.  \nB. The minimum segment size that can traverse this interface is 1500 bytes.  \nC. The minimum segment size that can traverse this interface is 1500 bytes.  \nD. The minimum packet size that can traverse this interface is 1500 bytes.  \nE. The maximum packet size that can traverse this interface is 1500 bytes.  \nF. The maximum frame size that can traverse this interface is 1500 bytes.  \nAnswer: E  \nExplanation  \nThe Maximum Transmission Unit (MTU) defines the maximum Layer 3 packet (in bytes) that the layer can pass onwards.  \nQuestion 5  \nA network interface port has collision detection and carrier sensing enabled on a shared twisted pair network. From this statement, what is known about the network interface port?  \nA. This is a 10 Mb/s switch port.  \nB. This is a 100 Mb/s switch port.  \nC. This is an Ethernet port operating at half duplex.  \nD. This is an Ethernet port operating at full duplex.  \nE. This is a port on a network interface card in a PC.  \nAnswer: C  \nExplanation  \nModern Ethernet networks built with switches and full-duplex connections no longer utilize  \nCSMA/CD. CSMA/CD is only used in obsolete shared media Ethernet (which uses repeater or hub) .  \nQuestion 6  \nIn an Ethernet network, under what two scenarios can devices transmit? (Choose two)  \nA. when they receive a special token  \nB. when there is a carrier  \nC. when they detect no other devices are sending  \nD. when the medium is idle  \nE. when the server grants access  \nAnswer: C D  \nExplanation  \nEthernet network is a shared environment so all devices have the right to access to the medium. If more than one device transmits simultaneous","cbCailyNaaDzVVHl","https://ap.wps.com/l/cbCailyNaaDzVVHl","pdf",7612564,262,"English","# CCNA - Basic Questions\n## Questions 1-8","[{\"question\":\"What do the first 24 bits of a MAC address represent?\",\"answer\":\"They are the OUI (Organizational Unique Identifier), assigned by IEEE, indicating the vendor/manufacturer for the network device.\"},{\"question\":\"How many broadcast and collision domains are formed in the described network?\",\"answer\":\"Broadcast domains are two (separated by the router). 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