Craig Zacker - CompTIA Network+ Practice Tests

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 as Supervisory Control and Data Acquisition (SCADA) systems?Field levelRemote accessDirect controlPlant supervisoryProduction controlProduction scheduling

21 Which of the following switch types immediately forwards frames after looking at only the destination address?Cut-throughSource routeStore-and-forwardDestination

22 Which of the following does a switch use to forward incoming packets out through the correct ports?IP addressesMAC addressesDNS namesMTU values

23 Which of the following statements about the Spanning Tree Protocol (STP) is not true?STP operates at the data link layer of the OSI model.STP is implemented in switches.STP prevents traffic from circulating endlessly around a network.STP compiles a database containing the IP addresses of connected devices.

24 Small Office Home Office (SOHO) networks typically use a multifunction connectivity device that can perform all but which one of the following functions?DHCPDNSSwitchRouterHubNAT routerAccess Point (AP)

25 Which of the following is the correct term for the process by which the Spanning Tree Protocol (STP) on a switch evaluates the paths through the network and places each port in the forwarding or blocking state?AssimilationConvergenceTree-buildingListening

26 A multilayer switch typically functions at which layers of the OSI reference model? (Choose two.)Data linkNetworkTransportApplication

27 Which of the following is something that only a firewall capable of stateful packet inspection can do?Filter traffic-based port numbersBlock traffic destined for specific IP addressesScan transport layer header fields for evidence of SYN floodsBlock all TCP traffic from entering a network

28 In local area networking, which of the following is not a type of bridge?Store and forwardRoutingTransparentMultiport

29 Which of the following are methods typically used by Intrusion Detection Systems (IDSs) to analyze incoming network traffic? (Choose all that apply.)Anomaly-based detectionBehavior-based detectionSignature-based detectionStatistic-based detection

30 Virtual Local Area Networks (VLANs) create the administrative boundaries on a switched network that are otherwise provided by which of the following devices?HubsRoutersFirewallsBridges

31 Which of the following devices can you use to connect two multimode fiber-optic Ethernet networks in different buildings 2000 meters apart using a single-mode fiber-optic cable segment running at the same speed, while maintaining a single collision domain?BridgeSwitchRouterMedia converter

32 Which of the following is another term for a multiport bridge?RouterSwitchHubGateway

33 Which of the following devices enables two computers to communicate when they are using different protocols at each layer of the Open Systems Interconnection (OSI) reference model?A routerA switchA hubA gateway

34 Review the following figure. How many collision domains and broadcast domains exist in the network diagram?There are three collision domains and three broadcast domains.There is one collision domain and three broadcast domains.There is one broadcast domain and three collision domains.There are no collision domains and only one broadcast domain.There are nine collision domains and three broadcast domains.

35 Which of the following statements about switches and routers are true? (Choose all that apply.)Routers operate at the network layer, whereas switches operate at the data link layer.All of the devices connected to a switch are part of a single broadcast domain, whereas the networks connected to a router form separate broadcast domains.Routers can communicate with each other and share information, but switches cannot.Switches forward packets based on their hardware addresses, whereas routers forward packets based on their IP addresses.

36 Ralph is installing an Ethernet Local Area Network (LAN) for a small business with two offices on opposite sides of a courtyard. Ralph plans to run a multimode fiber-optic cable across the courtyard, but the budget is limited, and he cannot use fiber for the whole network. Therefore, he installs Unshielded Twisted Pair (UTP) cable in the two offices, which have 10 and 12 workstations, respectively. Which of the following devices should Ralph use to join the two UTP installations together into one LAN using the fiber-optic run across the courtyard, while keeping the cost to a minimum?Media convertersHubsSwitchesRouters