Craig Zacker - CompTIA Network+ Practice Tests

256 Alice is the administrator of a subnet for which she has been allotted 100 IP addresses. She has installed a DHCP server with a scope containing all 100 available addresses for lease. There are currently 99 clients configured to use the DHCP server, many of which are mobile devices, and Alice fears that systems frequently leaving and rejoining the network might cause the scope of available leases to be exhausted. Which of the following adjustments can help to prevent this from happening?Increase the lease time for the scope.Decrease the lease time for the scope.Install a second DHCP server.Create a second scope for the subnet.

257 DHCP clients use broadcast messages to contact a DHCP server on the local subnet. Which of the following are mechanisms by which DHCP broadcast messages can be forwarded to a DHCP server on another subnet when there is none on the local subnet? (Choose all that apply.)DHCP relayUDP forwardingZone transferIP helper

258 Which of the following mechanisms enables administrators to maintain current DNS database information on multiple name servers, for fault tolerance and load balancing purposes?Multi-master replicationUDP forwardingIterative queryZone transfer

259 Which of the following Storage Area Network (SAN) protocols are capable of sharing a network medium with standard Local Area Network (LAN) traffic? (Choose all that apply.)iSCSIFibre ChannelFCoEInfiniBand

260 Which of the following protocols is not used for Storage Area Networks (SANs)?iSCSIFCoEVoIPFibre Channel

261 Which of the following technologies do iSCSI initiators use to locate iSCSI targets on the network?Active DirectoryICMPDNSiWINSiSNS

262 What is the highest possible data transfer rate on a Storage Area Network (SAN) using Fibre Channel?8 Gbps16 Gbps32 Gbps128 Gbps256 Gbps

263 In its primary functionality, a network attached storage (NAS) device is most closely associated with which of the following devices?Failover clusterFile serverJBODRAID

264 Which of the following statements about the differences between Network Attached Storage (NAS) and Storage Area Networks (SANs) are true? (Choose all that apply.)NAS provides file-level storage access, whereas SAN provides block-level storage access.NAS devices typically contain integrated iSCSI targets.SAN devices have an operating system, whereas NAS devices do not.NAS devices typically provide a filesystem, whereas SAN devices do not.

265 Which of the following statements specify advantages of FCoE over the original Fibre Channel standard? (Choose all that apply.)FCoE is less expensive to implement than Fibre Channel.FCoE can share a network with standard IP traffic, whereas Fibre Channel cannot.FCoE is routable over IP networks, whereas Fibre Channel is not.FCoE uses standard Ethernet networking hardware.

266 Which of the following are application layer protocols that Network Attached Storage (NAS) devices can use to serve shared files to clients on the network? (Choose all that apply.)CIFSNFSRDMAHTTP

267 Which of the following is not one of the advantages of iSCSI over Fibre Channel? (Choose all that apply.)iSCSI is routable, whereas Fibre Channel is not.iSCSI is less expensive to implement than Fibre Channel.iSCSI includes its own internal flow control mechanism, whereas Fibre Channel does not.iSCSI can share the same network as standard local area network traffic, whereas Fibre Channel cannot.

268 Which of the following Storage Area Network (SAN) technologies is primarily used by supercomputers as a high-speed, low-latency connection between Central Processing Units (CPUs) and storage systems?InfiniBandFibre ChanneliSCSIFCoE

269 Which of the following is the term for the client that accesses an iSCSI device on a storage area network?InitiatorTargetControllerAdapter

270 Which of the following protocols are included in an iSCSI packet? (Choose all that apply.)EthernetIPTCPUDPNone of the above

271 Which of the following protocols are included in a Fibre Channel packet?EthernetIPTCPUDPNone of the above

272 Which of the following protocol standards defines a layered implementation that does not correspond to the layers of the Open Systems Interconnection (OSI) model?iSCSIFibre ChannelPPPRDMA

273 Which of the following protocols are included in an FCoE packet?EthernetIPTCPUDPNone of the above

274 Which of the following protocols uses jumbo frames to increase performance levels on storage area networks?EthernetIPFibre ChanneliSCSI

275 Which of the following is not the name of one of the layers in the three-tier datacenter architecture?CoreIntermediateDistributionAccess

276 Which of the following is not a reason why the leaf and spine datacenter topology is superior to the standard three-tier topology?The leaf and spine arrangement uses a full mesh switching topology.In a leaf and spine topology, all data flows require the same number of hops.The leaf and spine topology is less expensive to implement than the three-tier topology.The leaf and spine topology uses software-defined networking to direct traffic, rather than blocking ports using the spanning tree protocol.

277 Which of the following best describes the difference between east-west and north-south traffic in a datacenter?East-west describes traffic between devices at the same layer of the OSI model, while north-south describes traffic between OSI model layers.East-west is switch-to-switch traffic, while north-south is switch-to-router traffic.East-west traffic stays within the datacenter, while north-south traffic does not.East-west is backbone traffic among switches and routers, while north-south is traffic to end systems, such as servers.

278 Top-of-rack switches most commonly form which layer of the datacenter topology?LeafBackboneSpineCore

279 Which of the following layers in a Software-Defined Network (SDN) architecture consists of hardware devices?ApplicationControlInfrastructureCore

280 In a Software Defined Network (SDN), as defined in the RFC 7426 specification, a plane is a set of resources related to a particular function. Which of the following is not one of the five planes defined in the SDN architecture?ForwardingOperationalControlManagementInfrastructureApplication

281 Ralph is designing the datacenter for his company's new branch office. He is considering various options, including building a new datacenter at the branch office facility, using a colocated datacenter, and creating a virtual datacenter using a public cloud provider. Which of the following statements about the differences between these options are true? (Choose all that apply.)A colocated datacenter would be less expensive to implement than a branch office or public cloud datacenter.In a branch office or colocated datacenter, Ralph's company would own the hardware.In all three datacenter options, the administrators in Ralph's company would be responsible for setting up and managing the hardware.In a branch office or colocated datacenter, Ralph's company would be responsible for all utility costs, including heating, cooling, and power.A public cloud datacenter would have greater physical security than the other two options.A public cloud datacenter is easier to expand than a colocated or branch office datacenter

282 Which of the following cloud service models enables you to perform a new installation of an operating system of your choice?IaaSPaaSSaaSDaaSAll of the above

283 When you contract with a provider to obtain email services for your company using their servers in the public cloud, which of the following service models are you using?IaaSPaaSSaaSDaaSNone of the above

284 Which of the following cloud service models provides the consumer with the most control over the cloud resources?IaaSPaaSSaaSDaaSIaaS, PaaS, SaaS, and DaaS all provide the same degree of control.

285 Alice has just created a new Windows Server 2016 virtual machine using remote controls provided by a cloud service provider on the Internet. Which of the following cloud architectures is she using? (Choose all that apply.)IaaSPaaSSaaSPublic cloudPrivate cloudHybrid cloudCommunity cloud