LITMIR.BIZ

Скачать книгу

the jack.Strip a small amount of insulation off each wire.Separate the twisted wire pairs at the ends.

      122 Which of the following cable connector types is not used with fiber-optic cable?Straight Tip (ST)Subscriber Connector (SC)Mechanical Transfer–Registered Jack (MT-RJ)F-typeFiber Local Connector (LC)

      123 Which of the following twisted pair cable types can you use to construct a 10GBase-T network with 100-meter segments? (Choose all that apply.)CAT5CAT5eCAT6CAT6aCAT7CAT8

      124 Which of the following cable connector types have been rendered nearly obsolete by Universal Serial Bus (USB) connections? (Choose all that apply.)BNCRJ-11DB-9DB-25

      125 Which of the following twisted pair cable types is rated for both a 10-megabit-per-second (Mbps) data rate (using two pairs) and a 100 Mbps data rate (using four pairs)?Category 3 (CAT3)Category 5 (CAT5)Category 5e (CAT5e)Category 6 (CAT6)

      126 Ed has been hired to install network cabling for a small private company with 15 employees who need to share files and printers. All of the employees are physically located within the same building in two separate office spaces directly adjacent to each other, sharing a common wall and door for access. Both offices have drop ceilings. The client wants a simple Gigabit Ethernet installation that is easy to troubleshoot. In addition, Ed's client wants to keep installation costs to a minimum. Which of the following combinations of topology, cable type, and installation method would best meet the needs of Ed's client?Star topology, fiber-optic cabling, and internal installationBus topology, coaxial cabling, and external installationBus topology, twisted pair cabling, and internal installationStar topology, coaxial cabling, and external installationStar topology, twisted pair cabling, and external installation

      127 Which of the following cable types are typically used in newly constructed Local Area Network (LAN) installations? (Choose all that apply.)Single-mode fiber opticMultimode fiber opticCoaxialUnshielded twisted pair

      128 Which of the following statements are true about coaxial cable? (Choose all that apply.)Coaxial cable has three conductors within the same sheath.Coaxial cable has two conductors within the same sheath.Coaxial cable has a copper core that carries light pulse signals.Coaxial cable has a copper core that carries electrical signals.Coaxial cable has an insulating outer sheath made of braided strands.Coaxial cable has an insulating sheath made of either PVC or Teflon.

      129 Which of the following twisted pair cable types are rated for 1000 megabit-per-second (Mbps) Gigabit Ethernet using two wire pairs? (Choose all that apply.)Category 3 (CAT3)Category 5 (CAT5)Category 5e (CAT5e)Category 6 (CAT6)Category 6a (CAT6a)None of the above

      130 Which of the following twisted pair cable types support both 10-megabit-per-second (Mbps) and 100 Mbps data rates, using only two pairs? (Choose all that apply.)Category 3 (CAT3)Category 5 (CAT5)Category 5e (CAT5e)Category 6 (CAT6)

      131 Which of the following statements about fiber-optic cabling are true? (Choose all that apply.)There are two main fiber-optic cable types: single-mode and multimode.Fiber-optic cable is typically used to span long distances.Fiber-optic cables use IBM Data Connector (IDC) connectors.Fiber-optic cables often use Straight Tip (ST) and Subscriber Connector (SC) connectors.Single-mode fiber-optic cable uses a laser light source and a glass core.Multimode fiber-optic cable uses a Light-Emitting Diode (LED) light source.

      132 Which of the following are characteristics of an internal cable installation? (Choose all that apply.)An internal cable installation uses bulk spools of cabling with no connectors attached for most cable runs.An internal cable installation uses only prefabricated cables with connectors attached for all cable runs.An internal cable installation uses solid wire conductors for all cable runs, regardless of distance.An internal cable installation uses stranded wire conductors for short cable runs and solid core for longer cable runs.In an internal cable installation, cables are typically not run through walls or ceilings.In an internal cable installation, cables are typically run through walls or ceilings.

      133 Which of the following Ethernet specifications calls for CAT8 UTP cable exclusively?10GBase-T40GBase-T100Base-TX1000Base-SX

      134 Ralph has been hired to connect three Local Area Networks (LANs) together with redundant paths that form a fault-tolerant backbone. The LANs reside on different floors in the same building and are approximately 600 meters apart. Each LAN is currently configured in a star topology using twisted pair cabling. Each LAN includes wall plates and rack-mounted patch panels and switches. Building and fire codes allow cables to run through existing risers, ceilings, and walls, but a 50,000-watt radio station occupies one of the floors between the LANs. Which topology, cable type, and installation method are best suited for this network?Star topology, fiber-optic cabling, and internal installationStar topology, coaxial cabling, and external installationMesh topology, fiber-optic cabling, and external installationBus topology, twisted pair cabling, and internal installationMesh topology, fiber-optic cabling, and internal installationStar topology, twisted pair cabling, and external installation

      135 Alice is a network consultant who has been contracted to evaluate a network design created many years ago, to determine if the design is still viable. The network will support 20 workstations, scattered throughout the building, to run an inventory database application. The two most distant computers are 150 meters apart. The primary goal for the network design is to connect all 20 workstations to a single LAN running at 10 megabits per second (Mbps). The two secondary goals are to provide sufficient fault tolerance for a single cable break to occur without affecting the entire network and to provide resistance to the electromagnetic interference (EMI) generated by machinery in the building. The earlier design calls for a Thin Ethernet LAN with all of the computers connected to a single coaxial cable segment. Which of the following statements about the proposal is true?The solution achieves neither the primary goal nor either of the secondary goals.The solution achieves the primary goal but neither of the secondary goals.The solution achieves the primary goal and one of the secondary goals.The solution achieves the primary goal and both of the secondary goals.

      136 Ed is a network consultant who has been contracted to design the network for a new manufacturing plant. The plant consists of two buildings 150 meters apart: an office with 20 computers and a manufacturing facility that has 30 computers. The two most distant computers at the site are 225 meters apart. Ed's design calls for a Gigabit Ethernet network using fiber-optic cable. On receiving the proposal, the client asks Ed to justify the additional labor and expense of installing fiber-optic cable instead of Unshielded Twisted Pair (UTP). Which of the following is not a valid reason for choosing fiber optic over UTP for this project?The 225-meter distance between the two most distant computers exceeds Ethernet's maximum cable segment length for UTP.Only fiber-optic cable can keep the two buildings electrically isolated.Fiber-optic cable is completely resistant to any electromagnetic interference generated by the equipment in the manufacturing plant.Fiber-optic cable provides a greater degree of tolerance to cable breaks than UTP.

      137 In the 100Base-TX specification, which of the following are the functions of the Fast Link Pulse (FLP) signals exchanged by switches and network interface adapters? (Choose all that apply.)The FLP signals verify the integrity of the connection (or link) between the devices.The FLP signals enable the devices to negotiate the speed of the link between them.The FLP signals indicate when a collision has occurred.The devices use FLP signals to detect bad frames.

      138 Which of the following 10 Gigabit Ethernet specifications calls for the use of copper cable?10GBase-LR10GBase-CX410GBase-ER10GBase-LX410GBase-SR

      139 Alice is a network consultant who has been contracted to upgrade an existing Ethernet network to Gigabit Ethernet. The network consists of 20 workstations with integrated 10Base-T/100Base-TX/1000Base-T network interface adapters. The network cabling is Category 5 (CAT5) Unshielded Twisted Pair (UTP), installed when the building was constructed. All of the workstations are connected to a single 100Base-TX switch. Which of the following options would Alice find to be a valid upgrade path to Gigabit Ethernet?Replace the CAT5 cable with at least Category 5e (CAT5e) or Category 6 (CAT6), and leave the existing network interface adapters and switch in place.Install a 1000Base-T network interface card in each computer, and leave the existing cables and switch in place.Replace the CAT5 cable with at least CAT5e or CAT6, and replace the 100Base-T switch with a 1000Base-T switch.Replace the 100Base-TX switch with a 1000Base-T switch, and leave the existing cables and network

Скачать книгу