Craig Zacker - CompTIA Network+ Practice Tests

37 Five computers are connected to the same switch, but only four are able to communicate with each other. Assuming that all of the hardware is functioning properly, which of the following could be a reason for the fifth computer's communication problem?The switch has the fifth computer connected to a Virtual Local Area Network (VLAN) that's different from that of the other four.The network is experiencing a switching loop.The fifth computer is experiencing an MTU black hole, whereas the other four computers are not.There is a virtual router between the fifth computer and the other four.

38 Which of the following types of systems are frequently used to collect information from Intrusion Detection Systems (IDSs)?SIEMNGFWRADIUSVoIP

39 Which of the following network devices are “dumb”—that is, purely electrical devices with no electronic intelligence?HubsSwitchesRoutersBridges

40 Which of the following explains why splitting a large, switched Ethernet LAN into two LANs by adding a router can help to alleviate traffic congestion and improve performance? (Choose all that apply.)Adding a router reduces the amount of broadcast traffic on each of the two LANs.Adding a router reduces the amount of unicast traffic on each of the two LANs.Adding a router diverts traffic to an alternate path through the network.Adding a router prevents computers on one LAN from communicating with computers on another LAN.

41 A small business office currently has a 100Base-TX Ethernet network with a single 8-port hub. All of the hub ports are populated, and the business owner wants to expand the network further. However, the hub does not have an uplink port. The owner has purchased a new hub, also with eight ports, which does have an uplink port, but he does not know how to connect them together. What must the owner do to install the new hub on the network?Use a standard patch cable to connect a standard port on the existing hub to a standard port on the new hub.Use a standard patch cable to connect a standard port on the existing hub to the uplink port on the new hub.Purchase a crossover cable and use it to connect a standard port on the existing hub to the uplink port on the new hub.Purchase a second new hub with an uplink port to replace the old one and use a standard patch cable to connect the two uplink ports together.

42 Which of the following tasks can you perform to split a large, switched Local Area Network (LAN) into multiple broadcast domains? (Choose all that apply.)Replace one or more switches with hubs.Install a firewall to filter broadcast traffic.Enable the Spanning Tree Protocol (STP) on the switches.Create Virtual Local Area Networks (VLANs) in the switches.Install routers on the network.

43 Which of the following statements about bridges and switches is true?Bridges and switches are network layer devices that use logical addressing to forward frames.Bridges and switches are data link layer devices that use Media Access Control (MAC) addresses to forward frames.Bridges and switches build their internal tables based on destination addresses and forward packets based on source addresses.Bridges and switches must support the network layer protocol implemented on the Local Area Network (LAN).Each port on a bridge or switch defines a separate broadcast domain.

44 Which of the following is a correct term describing the function of a switch?Layer 2 routerEthernet hubMultiport bridgeLayer 3 repeater

45 Which of the following are available as Internet of Things (IoT) devices?RefrigeratorsDoorbellsThermostatsSpeakersAll of the above

46 Which of the following is the primary reason why replacing hubs with switches on an Ethernet Local Area Network (LAN) improves its performance?Switches forward packets faster than hubs.Switches do not forward broadcast transmissions.Switches reduce the number of collisions on the network.Switches read the IP addresses of packets, not the hardware addresses.

47 Which of the following is a correct definition of a collision domain?A group of Local Area Networks (LANs), connected by routers, that enables any node to transmit to any other nodeA group of computers connected so that a broadcast transmission by any one device reaches all of the other devicesA group of devices connected by cable segments that are longer than the maximum length stated in the physical layer specificationA group of devices connected so that when two devices transmit at exactly the same time, a data collision occurs

48 Which of the following terms are used to describe the device used to place calls on a Voice over Internet Protocol (VoIP) installation? (Choose all that apply.)TerminalGatewayEndpointPBX

49 Which of the following statements about hubs is not true?Hubs are data link layer devices that connect network devices in a star or ring topology.Hubs amplify and repeat signals received through one port out all other ports regardless of the destination.Hubs are physical layer devices that connect network devices in a star topology.Hubs provide internal crossover circuits and use uplink ports to form a hierarchical star.

50 Which of the following statements about routers are true? (Choose all that apply.)Routers are network layer devices that use IP addresses to forward frames.Routers are data link layer devices that use Media Access Control (MAC) addresses to forward frames.Routers build their internal tables based on destination MAC addresses and forward frames based on source MAC addresses.Routers must support the network layer protocol implemented on the Local Area Network (LAN).Each port on a router defines a separate broadcast domain.

51 Which of the following hub types are supported by the 100Base-TX physical layer specification? (Choose all that apply.)Class IClass IIClass IIIClass IV

52 Which of the following statements about routers is not true?Routers can connect two or more networks with dissimilar data link layer protocols and media.Routers can connect two or more networks with the same data link layer protocols and media.Routers store and maintain route information in a local text file.Servers with multiple network interfaces can be configured to function as software routers.Routers can learn and populate their routing tables through static and dynamic routing.

53 The network administrator for a small business is installing a computer to function as a firewall protecting their internetwork from Internet intrusion. At which of the following locations should the administrator install the firewall system?Anywhere on the private internetwork, as long as the Internet is accessibleBetween the Internet access router and the Internet Service Provider's (ISP's) networkAt the ISP's network siteBetween the Internet access router and the rest of the private internetwork

54 What must you do to configure a firewall to admit File Transfer Protocol (FTP) traffic to the internal network using its default port settings? (Choose all that apply.)Open port 20Open port 21Open port 22Open port 23Open port 24

55 Proxy servers operate at which layer of the OSI reference model?Data linkNetworkTransportApplication

56 Which of the following is a feature that is not found in a traditional firewall product, but which might be found in a Next-Generation Firewall (NGFW)?Stateful packet inspectionDeep Packet Inspection (DPI)Network Address Translation (NAT)Virtual Private Network (VPN) support

57 Which of the following statements about content filtering in firewalls is true?Content filters examine the source IP addresses of packets to locate potential threats.Content filters enable switches to direct packets out through the correct port.Content filters examine the data carried within packets for potentially objectionable materials.Content filters use frequently updated signatures to locate packets containing malware.

58 Which of the following is not one of the criteria typically used by load balancers to direct incoming traffic to one of a group of servers?Which server has the lightest loadWhich server has the fastest response timeWhich server is next in an even rotationWhich server has the fastest processor