CompTIA Network+ Practice Tests. Craig Zacker

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      1 Which of the following technologies associated with the Internet of Things (IoT) is often used to identify pets using embedded chips?Z-waveBluetoothNFCRFID

      2 Which of the following is typically not an example of the Internet of Things (IoT)?A key fob that unlocks your carA smartphone home automation appA remotely monitored cardiac pacemakerA seismic early warning system

      3 A Wireless Access Point (WAP) enables computers equipped with wireless network interface adapters to function in which of the following topologies?StarAd hocBusInfrastructure

      4 Ralph has been hired by a company to redesign its Local Area Network (LAN). Right now, it has a single 100 Mbps Ethernet LAN with 40 users and 2 shared servers, all connected through 3 hubs. The users on the network must be able to share files with one another and also access the shared servers. The users are complaining that the network is too slow. Management states that cost is a factor that must be considered. Which of the following upgrade scenarios should Ralph recommend in this situation?Split the network into smaller segments with dedicated hubs as opposed to shared hubs.Split the network into two routed LANs with 20 users each.Replace the hubs with switches to define separate collision domains and filter unnecessary traffic from each segment.Replace the hubs with a layer 3 switch and define two Virtual LANs (VLANs) with 20 users each.

      5 Which of the following devices can split a single network into two collision domains while maintaining a single broadcast domain?HubBridgeSwitchRouterRepeater

      6 Which two of the following functions is the multifunction device on a home or small office network known as a broadband router least likely to provide? (Choose two.)Wireless Access Point (WAP)SwitchProxy serverDHCP serverVPN headend

      7 Which of the following devices run exclusively at the physical layer of the Open Systems Interconnection (OSI) model? (Choose all that apply.)RoutersHubsRepeatersSwitches

      8 Which of the following is the true definition of the term modem?A device that connects a computer to the Public Switched Telephone Network (PSTN)A device that connects a Local Area Network (LAN) to the InternetA device that converts analog signals to digital signals and back againA device that connects a Local Area Network (LAN) to a Wide Area Network (WAN)

      9 Which of the following devices is used to physically connect computers in the same Virtual Local Area Network (VLAN)?A bridgeA hubA switchA router

      10 Which of the following best describes the function of a firewall?A device located between two networks that enables administrators to restrict incoming and outgoing trafficA device that connects two networks together, forwarding traffic between them as neededA device that enables Internet network clients with private IP addresses to access the InternetA device that caches Internet data for subsequent use by internal network clients

      11 Which of the following terms is used to describe the method by which a firewall examines the port numbers in transport layer protocol headers?IP address filteringService-dependent filteringDeep Packet Inspection (DPI)Next-Generation Firewall (NGFW)

      12 Which of the following devices can also be described as a multiport repeater?HubBridgeSwitchRouter

      13 Which of the following bridging types has never been used on Ethernet Local Area Networks (LANs)?Store and forwardTransparentSource routeMultiport

      14 Which of the following physical network devices can conceivably be implemented as software in a computer's operating system? (Choose all that apply.)HubSwitchRouterFirewall

      15 Which of the following criteria does a firewall capable of service-dependent filtering use to block traffic?Hardware addressesProtocol identifiersIP addressesPort numbers

      16 Ralph is a freelance network consultant installing a three-node small business network. The computers are all in the same room and use wired Ethernet to connect to the switched ports of a multifunction device. The device also functions as a Network Address Translation (NAT) router for a cable modem connection to the Internet. NAT provides a measure of security, but Ralph wants to be sure that the network is protected from unauthorized Internet traffic and attacks against open ports. Which of the following solutions would enable Ralph to accomplish this goal with the minimum cost to the client?Install a hardware firewall between the multifunction device and the cable modem.Install an Intrusion Prevention System (IPS) between the multifunction device and the cable modem.Install a personal firewall on each of the computers.Connect an Intrusion Detection System (IDS) to one of the switched ports in the multifunction device.Use a port scanner to monitor the traffic entering the open ports on the computers.

      17 Which of the following statements about hubs and switches are true? (Choose all that apply.)Hubs operate at the physical layer, whereas switches operate at the network layer.All of the devices connected to a hub are part of a single collision domain, whereas each device connected to a switch has its own collision domain.There are switches available with network layer functionality, but there are no hubs with that capability.Switches create a separate broadcast domain for each connected device, whereas hubs create a single broadcast domain for all of the connected devices.

      18 Which of the following problems is the Spanning Tree Protocol (STP) intended to prevent? (Choose all that apply.)Broadcast stormsLate collisionsBridging loopsCrosstalk

      19 Which of the following devices perform essentially the same function? (Choose two.)HubsBridgesSwitchesRouters

      20 Which of the following is not one of the five functional levels associated with a distributed control system such СКАЧАТЬ