CompTIA Network+ Practice Tests. Craig Zacker
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configure a subnet and use appropriate IP addressing schemes.Public vs. privateRFC1918Network address translation (NAT)Port address translation (PAT)IPv4 vs. IPv6Automatic Private IP Addressing (APIPA)Extended unique identifier (EUI-64)MulticastUnicastAnycastBroadcastLink localLoopbackDefault gatewayIPv4 subnettingClassless (variable-length subnet mask)ClassfulABCDEClassless Inter-Domain Routing (CIDR) notationIPv6 conceptsTunnelingDual stackShorthand notationRouter advertisementStateless address autoconfiguration (SLAAC)Virtual IP (VIP)Subinterfaces
1.5 Explain common ports and protocols, their application, and encrypted alternatives.ProtocolsPortsFile Transfer Protocol (FTP)20/21Secure Shell (SS)22Secure File Transfer Protocol (SFT)22Telnet23Simple Mail Transfer Protocol (SMTP)25Domain Name System (DNS)53Dynamic Host Configuration Protocol (DHCP)67/68Trivial File Transfer Protocol (TFTP)69Hypertext Transfer Protocol (HTTP)80Post Office Protocol v3 (POP3)110Network Time Protocol (NTP)123Internet Message Access Protocol (IMAP)143Simple Network Management Protocol (SNMP)161/162Lightweight Directory Access Protocol (LDAP)389Hypertext Transfer Protocol Secure (HTTPS) [Secure Sockets Layer (SSL)]443HTTPS [Transport Layer Security (TLS)]443Server Message Block (SMB)445Syslog514SMTP TLS587Lightweight Directory Access Protocol (over SSL) (LDAPS)636IMAP over SSL993POP3 over SSL995Structured Query Language (SQL) Server1433SQLnet1521MySQL3306Remote Desktop Protocol (RDP)3389Session Initiation Protocol (SIP)5060/5061IP protocol typesInternet Control Message Protocol (ICMP)TCPUDPGeneric Routing Encapsulation (GRE)Internet Protocol Security (IPSec)Authentication Header (AH)/Encapsulating Security Payload (ESP)Connectionless vs. connection-oriented
1.6 Explain the use and purpose of network services.DHCPScopeExclusion rangesReservationDynamic assignmentStatic assignmentLease timeScope optionsAvailable leasesDHCP relayIP helper/UDP forwardingDNSRecord typesAddress (A)Canonical name (CNAME)Mail exchange (MX)Authentication, authorization, accounting, auditing (AAAA)Start of authority (SOA)Pointer (PTR)Text (TXT)Service (SRV)Name server (NS)Global hierarchyRoot DNS serversInternal vs. externalZone transfersAuthoritative name serversTime to live (TTL)DNS cachingReverse DNS/reverse lookup/forward lookupRecursive lookup/iterative lookupNTPStratumClientsServers
1.7 Explain basic corporate and datacenter network architecture.Three-tieredCoreDistribution/aggregation layerAccess/edgeSoftware-defined networkingApplication layerControl layerInfrastructure layerManagement planeSpine and leafSoftware-defined networkTop-of-rack switchingBackbone Traffic flowsNorth-SouthEast-WestBranch office vs. on-premises datacenter vs. colocationStorage area networksConnection typesFibre Channel over Ethernet (FCoE)Fibre ChannelInternet Small Computer Systems Interface (iSCSI)
1.8 Summarize cloud concepts and connectivity options.Deployment modelsPublicPrivateHybridCommunityService modelsSoftware as a service (SaaS)Infrastructure as a service (IaaS)Platform as a service (PaaS)Desktop as a service (DaaS)Infrastructure as codeAutomation/orchestrationConnectivity optionsVirtual private network (VPN)Private-direct connection to cloud providerMultitenancyElasticityScalabilitySecurity implications
1 At which of the following layers of the Open Systems Interconnection (OSI) model do the protocols on a typical local area network (LAN) use media access control (MAC) addresses to identify other computers on the network?PhysicalData linkNetworkTransport
2 Which of the following organizations developed the Open Systems Interconnection (OSI) model?International Telecommunication Union (ITU-T)Comité Consultatif International Télégraphique et Téléphonique (CCITT)American National Standards Institute (ANSI)Institute of Electrical and Electronics Engineers (IEEE)International Organization for Standardization (ISO)
3 Which layer of the Open Systems Interconnection (OSI) model is responsible for the logical addressing of end systems and the routing of datagrams on a network?PhysicalData linkNetworkTransportSessionPresentationApplication
4 On a TCP/IP network, which layers of the Open Systems Interconnection (OSI) model contain protocols that are responsible for encapsulating the data generated by an application, creating the payload for a packet that will be transmitted over a network? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
5 What layer of the Open Systems Interconnection (OSI) model is responsible for translating and formatting information?PhysicalData linkNetworkTransportSessionPresentationApplication
6 Which of the following devices typically operates at the network layer of the Open Systems Interconnection (OSI) model?Proxy serverHubNetwork interface adapterRouter
7 Which layer of the Open Systems Interconnection (OSI) model provides an entrance point to the protocol stack for applications?PhysicalData linkNetworkTransportSessionPresentationApplication
8 Which layer of the Open Systems Interconnection (OSI) model is responsible for dialogue control between two communicating end systems?PhysicalData linkNetworkTransportSessionPresentationApplication
9 Some switches can perform functions associated with two layers of the Open Systems Interconnection (OSI) model. Which two of the following layers are often associated with network switching? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
10 At which layer of the Open Systems Interconnection (OSI) model are there TCP/IP protocols than can provide either connectionless or connection-oriented services to applications?PhysicalData linkNetworkTransportSessionPresentationApplication
11 Which of the following layers of the Open Systems Interconnection (OSI) model typically have dedicated physical hardware devices associated with them? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
12 At which layer of the Open Systems Interconnection (OSI) model is there a protocol that adds both a header and footer to the information that is passed down from an upper layer, thus creating a frame?PhysicalData linkNetworkTransportSessionPresentationApplication
13 Identify the layer of the Open Systems Interconnection (OSI) model that controls the addressing, transmission, and reception of Ethernet frames, and also identify the media access control method that Ethernet uses.Physical layer; Carrier Sense Multiple Access with Collision Detection (CSMA/CD)Physical layer; Carrier Sense Multiple Access with Collision Avoidance (CSMA/CA)Data link layer; CSMA/CDData link layer; CSMA/CA
14 At which layer of the OSI model do you find the protocol responsible for the delivery of data to its ultimate destination on an internetwork?Data linkNetworkSessionApplication
15 Which of the following is not a protocol operating at the network layer of the OSI model?IPICMPIGMPIMAP
16 Ed is a software developer who has been given the task of creating an application that requires guaranteed delivery of information between end systems. At which layer of the Open Systems Interconnection (OSI) model does the protocol that provides the guaranteed delivery run, and what type of protocol must Ed use?Data link layer; connectionlessNetwork layer; connection-orientedTransport layer; connection-orientedApplication layer; connectionless
17 Which of the following devices operates only at the physical layer of the Open Systems Interconnection (OSI) model?HubBridgeSwitchRouter
18 Alice is a network administrator designing a new Local Area Network (LAN). She needs to determine the type of cabling and the network topology to implement. Which layers of the Open Systems Interconnection (OSI) model apply to cabling and topology elements?Physical and data link layersData link and network layersNetwork and transport layersTransport and application layers
19 Which layers of the Open Systems Interconnection (OSI) model do not have protocols in the TCP/IP suite exclusively dedicated to them? (Choose all that apply.)PhysicalData linkNetworkTransportSessionPresentationApplication
20 The protocols at which layer of the Open Systems Interconnection (OSI) model use port numbers to identify the applications that are the source and the destination of the data in the packets?ApplicationPresentationTransportNetwork
21 Which of the following is a correct listing of the Open Systems Interconnection (OSI) model layers, in order, from top to bottom?Physical, data link, transport, network, session presentation, applicationApplication, session, presentation, transport, network, data link, physicalPresentation, application, transport, session, network, physical, data linkSession, application, presentation, transport, data