CompTIA Network+ Practice Tests. Craig Zacker

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СКАЧАТЬ which of the following Internet connection types does a specification called DOCSIS apply?Dial-up modemDSLCable broadbandISDN

      76 Which of the following are types of circuits offered by frame relay services? (Choose all that apply.)SRVPVCSVCUPC

      77 Which of the following types of Wide Area Network (WAN) connections commonly use Point-to-Point Protocol over Ethernet (PPPoE)? (Choose all that apply.)Leased linesSONETCable broadbandDigital Subscriber Line (DSL)

      78 Which of the following devices often provides diagnostic testing capabilities at the demarcation point of a leased line Wide Area Network (WAN) service?SIP trunkMedia converterSmartjackAAAA server

      79 Which of the following Wide Area Network (WAN) services typically uses a switched fabric that was called a cloud long before the term came into general use?ATMFractional T-1SONETFrame relay

      80 Ralph has been contracted to consult for a company that wants to update its legacy Ethernet network to Gigabit Ethernet. On examining the site, he discovers that the network is still using coaxial-based Thin Ethernet. What change in network topology must occur to upgrade the existing network to Gigabit Ethernet using Unshielded Twisted Pair (UTP) cable?Bus to RingRing to StarStar to BusBus to StarStar to Ring

      81 Which of the following best describes the function of a vSwitch (or virtual switch)?A vSwitch is a software product that enables a computer with multiple network adapters to function as a switch.A vSwitch is a feature in layer 3 switches that enables VLANs on the same switch to communicate with each other.A vSwitch is a feature in layer 3 switches that enables VLANs on different switches to communicate with each other.A vSwitch enables virtual machines (VMs) running on the same hypervisor to communicate with each other internally.

      82 Which of the following statements best describes the difference between Type I and Type II virtualization?Type II virtualization requires the host computer to have a processor that supports hardware virtualization assistance; Type I virtualization does not.In Type I virtualization, the hypervisor runs directly on the physical computer hardware, whereas in Type II virtualization, a host operating system runs on the computer hardware and the hypervisor runs on top of the host OS.Type I virtualization supports up to 256 virtual machines, whereas Type II virtualization supports only 8.Type I virtualization requires a separate processor for each virtual machine, whereas in Type II virtualization, the VMs all share a single processor.

      83 On which of the following virtual networking components can you create VLANs?Virtual NICVirtual switchVirtual routerVirtual firewall

      84 On an unmanaged network, which of the following virtual networking components have media access control (MAC) addresses assigned to them?Virtual switchesVirtual NICsHypervisorsVirtual firewalls

      85 Which of the following components is responsible for providing a virtualized hardware environment and running virtual machines?HypervisorVirtual servervSwitch (virtual switch)VPN concentrator

      86 Which of the following is the proper term for a computer with a hypervisor on which you can create virtual machines and other virtual components?GuestNASHostSAN

      87 In which of the following ways does a vSwitch (virtual switch) differ from a physical switch?Virtual switches have an unlimited number of ports, whereas physical switches have a specific number.Physical switches typically support the creation of VLANs, whereas virtual switches do not.Virtual switches cannot forward traffic to the host server running them, whereas physical switches can forward traffic to all connected computers.Physical switches always include layer 3 functionality, whereas virtual switches do not.

      88 In which of the following components can a virtual firewall be implemented?On a host operating systemOn a guest operating systemIn a dedicated virtual machineIn a virtual switchAll of the above

      89 Which of the following technologies can replace leased lines, such as T-1s, by multiplexing signals as packets switched through virtual circuits in a cloud?E-1sFrame relayATMPPP

      90 Which of the following is not a protocol that uses tunneling to establish secured links between TCP/IP systems?L2TPIPsecMGRENAT

      91 Which of the following is not one of the primary components of the Network Function Virtualization (NFV) framework?VNFNFV ISGNFVINFV-MANO

      92 Which of the following best describes the function of the network medium?The network medium provides the physical connection between networked computers.The network medium provides the protocol used to transmit data between end systems.The network medium passes data packets between two routers.The network medium processes electrical or light signals and converts them to data.

      93 Which of the following signal types is carried by copper cable?Fiber opticMicrowaveInfraredElectrical

      94 Identify the organizations that developed the general cable type standards for voice and data communications that are currently in use and identify the document name.ANSI/TVA, document C568TWA/ANSI/EIA, document T530-AEIA/ANSI/TWA, document 802.2TDA/EIA/TIA, document 802.11ANSI/TIA/EIA, document T568b

      95 Which of the following cable types and connectors are used to attach a television set to a cable television (CATV) network?A fiber-optic cable and a Straight Tip (ST) connectorA coaxial cable and a Bayonet-Neill-Concelman (BNC) connectorA twisted pair cable and an RJ-45 connectorA coaxial cable and an F-type connectorAn AUI cable and a vampire tap connectorA twinaxial cable and a Bayonet-Neill-Concelman (BNC) connector

      96 Which of the following cable types is used for Thick Ethernet network segments?RG-8RG-58RJ-45RJ-11

      97 Which of the following cable types is used for Thin Ethernet network segments?RG-8RG-58RJ-45RJ-11

      98 Which of the following telecommunications components is all but obsolete and is found only in old, analog telephone installations?66 block110 blockPatch panelSmartjack

      99 Which of the following is a common European alternative to the 110 punchdown block used in U.S. telecommunications installations?66 blockmGREKrone LSA-PlusBIX

      100 Which of the following coaxial cable types are still in general use? (Choose all that apply.)RG-6RG-8RG-58RG-59

      101 Which of the following statements about the differences between fiber-optic Angled Physical Contact (APC) and Ultra-Physical Contact (UPC) connectors are true? (Choose all that apply.)APCs should only be joined to other APCs.APCs generate more insertion loss that UPCs.UPCs generate more return loss than APCs.UPCs use a green connector boot or body.

      102 Which of the following is not a type of fiber-optic connector?SCMTRJSTBNC

      103 Which of the following physical layer transceiver module standards is the oldest and therefore the most obsolete?SFPSFP+GBICQSFPQSFP+

      104 Which of the following cable types is typically configured in a star topology, uses eight copper conductors arranged in four pairs, and uses RJ-45 connectors?RG-8Twisted pairRG-58Fiber optic

      105 Which of the following statements explains the purpose of the twists in twisted pair cabling?The twists prevent collisions.The twists completely eliminate crosstalk and electromagnetic interference (EMI) in adjacent wire pairs.The twists prevent crosstalk in adjacent wire pairs and limit the effects of EMI on the signals carried over the cable.The twists extend the bend radius allowance of the cable.

      106 Which of the following tools do cable installers use to add connectors such as RJ-45 and RJ-11 to twisted pair cabling?A crimperA splicerA pigtailA patch

      107 Which of the following combinations of attributes describes the cable used for a Thin Ethernet network?RJ-45, 50-ohm, 0.270-inch, coaxial cable with BNC connectorsRG-59, 75-ohm, 0.242-inch, СКАЧАТЬ