CompTIA Network+ Practice Tests. Craig ZackerЧитать онлайн книгу.
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, coaxial cable with F connectorsRG-58, 50-ohm, 0.195-inch, coaxial cable with BNC connectorsRG-8, 50-ohm, 0.405-inch, coaxial cable with N connectorsRJ-6, 75-ohm, 0.242-inch, coaxial cable with BNC connectors
108 Which of the following connector types are typically associated with Ethernet networks? (Choose all that apply.)F-typeBNCRJ-45DB-9N-type
109 Which of the following connector types was typically associated with a T-connector attached to the computer?RJ45MT-RJ8P8CBNCF
110 Which of the following connector types are associated with fiber-optic cables? (Choose all that apply.)RJ11STFLCMT-RJ
111 Which of the following types of cable, when installed, sometimes employed a device called a vampire tap?Unshielded twisted pairShielded twisted pairMultimode fiber opticSingle-mode fiber opticCoaxial
112 In an internal UTP cable installation, each horizontal cable run connects a wall plate in the work area to a centralized cabling nexus in a telecommunications room. Which of the following is the correct term for this cabling nexus?TelepoleDemarcBackbonePatch panelFiber distribution panel
113 Which of the following statements about single-mode and multimode fiber-optic cables are true?Single-mode cables can span longer distances than multimode cables.Single-mode cables are more resistant to electromagnetic interference than multimode cables.Single-mode cables are more difficult to install than multimode cables.Single-mode cables have a much larger core diameter than multimode cables.
114 Which of the following components are typically used only for telephone cable installations, and not for data networking? (Choose all that apply.)66 blocks110 blocks25 pair UTP cables100 pair UTP cables
115 Which of the following statements about single-mode fiber-optic cable are true? (Choose all that apply.)Single-mode cables use an LED light source, whereas multimode cables use a laser.Single-mode cables can span longer distances than multimode cables.Single-mode cables have a smaller core filament than multimode cables.Single-mode cables have a smaller bend radius than multimode, making them easier to install.Single-mode fiber-optic cables require a ground, whereas multimode cables do not.
116 Which of the following tools do cable installers use to connect bulk cable runs to wall plates and patch panels?A crimperA splicerA pigtailA punchdown block tool
117 Ralph has been hired by a client to install cabling to connect two existing networks. The two networks are in different buildings approximately 1000 feet apart. The cable type must support Gigabit Ethernet data rates of 1000 megabits per second (Mbps) and provide a high level of resistance to electromagnetic interference (EMI). Your client wants the most economical cabling solution that meets their needs. Which of the following cable types best meets the needs of this client?Multimode fiber-optic cableShielded Twisted Pair (STP) cableUnshielded Twisted Pair (UTP) cableThin coaxial cableSingle-mode fiber-optic cable
118 Which of the following are connector types used with coaxial cables? (Choose all that apply.)BNCF-typeN-typeSTRJ-11
119 Alice has been hired by a corporation to design the cabling for their network. The corporation just moved into two different floors of an older building: a retail space on the ground floor and an office space on the 43rd floor. The building has existing Category 5 (CAT5) Unshielded Twisted Pair (UTP) cable. Alice's client wants two separate Local Area Networks (LANs), one on each of the two floors, with a backbone network connecting them. They want a 1 gigabit-per-second (Gbps) data rate for each LAN but plan on migrating to 10 Gbps in the future. The two networks are approximately 200 meters apart. Which of the following solutions best meets the client's needs?Install Category 6 (CAT6) or Category 6a (CAT6a) UTP cable for the LANs. These cables run at 1 Gbps and provide a migration path to 10 Gbps. Use twisted pair cable for the backbone network.Use the existing CAT5 cabling for the LANs, since CAT5 runs at 1 Gbps. Use thick coaxial cable for the backbone network.Install CAT6 or CAT6a UTP cable for the LANs. These cables run at 1 Gbps and provide a migration path to 10 Gbps. Use multimode fiber-optic cable for the backbone network.Install CAT6 or CAT6a UTP cable for the LANs. These cables run at 1 Gbps and provide a migration path to 10 Gbps. Use the existing CAT5 cable for the backbone network.
120 A maintenance worker, while replacing a light fixture in an office building, accidentally severs a network cable in the drop ceiling. The tenants use a variety of Local Area Network (LAN) technologies throughout the structure, but on that particular floor, there are three separate LANs: a 10-node Thin Ethernet LAN using coaxial cable in a bus topology, a 25-node Gigabit Ethernet LAN using twisted pair cable in a star topology, and a 5-node Fiber Distributed Data Interface (FDDI) LAN using multimode fiber-optic cable in a double ring topology. Without knowing which of the LANs the severed cable belongs to, what is the maximum number of computers that could be directly affected by the cable break?015102540
121 In the punchdown process for Unshielded Twisted Pair (UTP) cable, which of the following is the last step that you perform when connecting bulk cables to jacks in wall plates and patch panels?Cut off the excess wire that protrudes past the contacts.Press the bare wire down between the two metal contacts that hold it in place.Strip some of the insulating sheath off the cable end to expose the wires.Insert the wires into the appropriate