3.3.8 Practice Questions

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Dec 6, 2023

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3.3.8 Practice Questions Date: 11/4/2023 4:43:25 pm • Time Spent: 07:47 Score: 100% Passing Score: 80% You need to terminate a Cat6 UTP cable with an RJ45 connector. Your organization's IT policy states that all cable connectors must be wired according to TIA568B standards. Drag the UTP wire on the left to the correct pin on the RJ45 connector on the right. Pin 1 selected correct answer: White with orange stripe correct answer: Pin 2 selected correct answer: Solid orange correct answer: Pin 3 selected correct answer: White with green stripe correct answer:

Pin 4 selected correct answer: Solid blue correct answer: Pin 5 selected correct answer: White with blue stripe correct answer: Pin 6 selected correct answer: Solid green correct answer: Pin 7 selected correct answer: White with brown stripe correct answer: Pin 8 selected correct answer: Solid brown correct answer:

Explanation The T568B wiring standard specifies the following pinout for RJ45 connectors: Pin 1: White with orange stripe Pin 2: Solid orange Pin 3: White with green stripe Pin 4: Solid blue Pin 5: White with blue stripe Pin 6: Solid green Pin 7: White with brown stripe Pin 8: Solid brown References q_twisted_pair_cons_568b_01_np6.question.fex Which of the following describes the point where the service provider's responsibility to install and maintain wiring and equipment ends and the customer's begins? Answer Vertical cross connect IDF Correct Answer: Demarc Punch down block

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Explanation When you contract with a local exchange carrier (LEC) for data or telephone services, they install a physical cable and a termination jack on your premises. The demarcation point (demarc) is the line that marks the boundary between the Telco equipment and the private network or telephone system. Typically, the LEC is responsible for all the equipment on one side of the demarc, and the customer is responsible for all the equipment on the other side of the demarc. A punch down block is a block used to connect individual copper wires together. While the demarc might terminate in a punch down block, punchdown blocks are used within other locations at the customer site. An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the main distribution frame (MDF), although additional IDFs can be added on each floor as necessary. A vertical cross connect connects the IDF to the MDF on a different floor. References q_twisted_pair_cons_demarc_np6.question.fex You have a network that occupies all three floors of a building. The WAN service provider has installed the line in a wiring closet on the main floor. You have a wiring closet on the two remaining floors directly above the wiring closet on the main floor. What would you use to connect the wiring closets together? Answer Horizontal cross connect Smart jack Demarc extension Correct Answer:

Vertical cross connect Explanation A vertical cross connect joins the main distribution frame (MDF) on the main floor to intermediate distribution frames (IDFs) on upper floors. Cabling runs vertically (up and down) between the MDF and the IDFs. A horizontal cross connect joins IDFs on the same floor. Cabling runs horizontally (sideways) between the IDFs. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. A demarc extension extends the demarcation point from its original location to another location within the building. The demarc extension typically consists of a single wire bundle that attaches to the existing demarc and supplies a termination point to a different location. You might need a demarc extension if your network occupies an upper floor of a building. The LEC typically installs the demarc on the MDF on the bottom floor, and you'll need to install an extension to place the demarc on the IDF on your floor. References q_twisted_pair_cons_vertical_np6.question.fex Which recommendation should you follow while using 110 blocks for connecting Cat5 and higher data cables? Answer Correct Answer: Keep wire pairs twisted up to within one half of an inch of the connector. Connect wires using the T568A standard. Use C-5 connectors.

Connect wires using the T568B standard. Explanation When you use Cat5 (or higher) wiring, preserve the twists in each wire pair to within one half of an inch of the connecting block. Use C-4 connectors to connect four pairs of wires. When connecting data wires on a 110 block, you typically connect wires in the following order: White wire with a blue stripe followed by the solid blue wire. White wire with an orange stripe followed by the solid orange wire. White wire with a green stripe followed by the solid green wire. White wire with a brown stripe followed by the solid brown wire. T568A and T568B are used to connect wires within an RJ45 connector when making drop cables. References q_wire_distribution_110_01_np6.question.fex Which of the following uses metal clips placed over plastic slots to connect individual copper wires? Answer Correct Answer: 110 block 66 block 100 pair

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25 pair Explanation A 110 block is a punch down block that uses metal clips fitted over plastic pins. To connect wires using a 110 block, place the wires in the plastic slots, attach the metal clip, and then punch down the connecting cable on the top of the clip. A 66 block uses metal pins to connect wires. Wires are placed in the pins, and pins within a row are electrically connected. 25 pair and 100 pair are cable bundles that include multiple pairs of copper wires (either 25 pairs of wires or 100 pairs of wires). References q_wire_distribution_110_02_np6.question.fex You are preparing to attach wires in a 110 block. You want to connect the wires and trim off the excess at the same time. Which of the following should you do? (Select two.) Answer Use the end without a cutting blade. Correct Answer: Point the cut side of the tool towards the wire end. Point the cut side of the tool toward the connected end of the wire.

Use a punch down tool with a straight blade. Correct Answer: Use a punch down tool with a notched blade. Explanation Use a punch down tool to connect wires to a 110 or 66 block. When using a punch down tool, choose the right blade for the job: Use a notched blade for a 110 block. Use a straight blade for a 66 block. For both blade types, you can use the end without a cutting blade if you want to punch down without cutting the wire. When using the cutting blade, point the cut side of the punch down tool toward the wire's end that you want to trim. References q_wire_distribution_110_03_np6.question.fex Which of the following terms identifies the wiring closet in the basement or ground floor that typically includes the demarcation point? Answer Horizontal cross connect Correct Answer: MDF

110 block IDF Explanation The main distribution frame (MDF) is the main wiring point for a building. The MDF is typically located on the bottom floor or basement. The LEC typically installs the demarc to the MDF. An intermediate distribution frame (IDF) is a smaller wiring distribution point within a building. IDFs are typically located on each floor directly above the MDF, but you can place additional IDFs on each floor as necessary. A horizontal cross connect joins wiring closets on the same floor. A smart jack is a special loopback plug installed at the demarcation point for a WAN service. Technicians at the central office can send diagnostic commands to the smart plug to test connectivity between the central office and the demarc. Use 66 and 110 blocks to connect individual wires within a wiring closet. References q_wire_distribution_mdf_np6.question.fex Which of the following terminates individual wires from a 25-pair or 100-pair cable using female RJ45 ports? Answer 110 block 66 block Horizontal cross connect Correct Answer:

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Patch panel Explanation A patch panel is a device that typically connects individual stranded wires into female RJ45 connectors. For example, you might connect four pairs of wires from a punch down block to a port on the patch panel. On the patch panel, you then connect drop cables (cables with RJ45 connectors) to the patch panel on one end and a computer on the other end. Use 66 and 110 blocks to connect individual wires within a wiring closet. These punch down blocks connect the individual wires together, but they do not terminate in RJ45 connectors. A horizontal cross connect connects IDFs on the same floor. References q_wire_distribution_patch_np6.question.fex Which tool should you use to extend network services beyond the demarc? Answer Patch panel Tone generator Correct Answer: Punch down tool Crimper Explanation

A demarc is the location where the local network ends and the telephone company's network begins. This location is usually at a punchdown block in a wiring closet. You use a punch down tool to attach wires to the punchdown block. A tone generator sends a signal on the wire. A crimping tool is used to attach connectors to wires. Patch panels permit circuits to be arranged and rearranged by plugging and unplugging respective patch cords on a mounted hardware assembly. References q_wire_distribution_punch_down_01_np6.question.fex You are making Ethernet drop cables using Cat5e cables and RJ45 connectors. You need to remove the plastic coating over the cable to expose the individual wires. Which tool should you use? Answer Snips Punch down tool Crimping tool Correct Answer: Cable stripper Explanation

Use a cable stripper to remove a cable's plastic jacket or sheath. When you make drop cables or use punch down blocks, do not remove the plastic covering for individual wires. Use snips to cut cables. Use a punchdown tool to push wires into 66 or 110 blocks and cut the wires at the same time. A crimping tool is designed for RJ45 connectors to attach connectors to UTP cables. References q_wire_distribution_stripper_np6.question.fex

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