(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 interface adapters in place.
140 Ralph is a network consultant with a client who wants him to design the Local Area Network (LAN) for his company's new branch office. The site consists of a building with Unshielded Twisted Pair (UTP) cable already installed, which the client considered a major selling point when selecting the property. He wants Ralph to install the fastest possible LAN using the existing cable. After examining the site, Ralph notes that the cable is Category 5 (CAT5), installed using a star topology, and that the individual cable runs are all less than 100 meters long. Which of the following Ethernet physical layer specifications can Ralph use for the new network to provide the fastest transmission speeds without replacing the cable?10GBase-T100Base-TX1000Base-T1000Base-LX1000Base-SX
141 Which Institute of Electrical and Electronics Engineers (IEEE) standards for Ethernet support 10-megabit-per-second (Mbps) communications, and what are the correct segment limitations for each standard? (Choose all that apply.)10Base2; segment maximum is 100 meters10Base2; segment maximum is 185 meters10Base5; segment maximum is 500 meters100Base5; segment maximum is 500 meters10Base-T; segment maximum is 100 meters10Base-T segment maximum is 328 meters
142 Which of the following are Ethernet cable types that must be configured in a bus topology? (Choose all that apply.)RG-8RG-10RG-14RG-58
143 Ed has been hired by a company to upgrade its network infrastructure. The current network is 10 Mbps Ethernet running on Category 5 (CAT5) twisted pair cable. There are 100 computers on the network, all of which have 10/100/1000 multispeed network interface adapters. The computers are all connected to hubs. Users are complaining that the network is too slow, and connections are sometimes dropped. Management wants to upgrade to the fastest Ethernet standard possible, using the existing cabling, and still keep costs to a minimum. Which of the following implementations should Ed recommend to the client?Upgrade to 100Base-TX and keep the existing hubs.Upgrade to 1000Base-T and keep the existing hubs.Upgrade to 100Base-FX and replace all of the hubs with switches.Upgrade to 1000Base-T and replace all of the hubs with switches.Upgrade to 100Base-SX and replace all of the hubs with switches.
144 Ralph has been asked to create some new patch cables that will be used to connect patch panel ports to the network switches. He has been told to use the T568B pinout standard for all of the cable connectors. Ralph gathers the materials and the tools needed to complete the task, but he is not sure about the T568B pinout. Which of the following pinouts must Ralph use when creating
