3.1.1 Network Cables
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Questions and Answers

What are the two main categories of network media?

  • Digital and Analog
  • Bound and Unbound (correct)
  • Wired and Wireless
  • Local and Wide Area

    • What is the primary component at the center of coaxial cable?

  • Outer jacket
  • Metallic shield
  • Inner conductor (correct)
  • Insulator

    • Why is RG-59 coaxial cable not commonly used anymore?

  • It has poor flexibility.
  • It cannot be used for video transmission.
  • It is too expensive to produce.
  • It loses signal quality over long distances. (correct)

    • What is one application that RG-59 coaxial cables were commonly used for?

    <p>Satellite and cable TV broadcasts</p> Signup and view all the answers

    What is typically found around the inner conductor of a coaxial cable?

    <p>An insulator</p> Signup and view all the answers

    Which of the following best describes coaxial cable construction?

    <p>Inner conductor surrounded by insulator and shield</p> Signup and view all the answers

    What type of cable is predominantly used in industries for video transmission today?

    <p>RG-6</p> Signup and view all the answers

    What can happen if different types of coaxial cables are mixed in a network?

    <p>Transmission errors</p> Signup and view all the answers

    What type of signals does fiber optic cabling use to transmit data?

    <p>Light pulses</p> Signup and view all the answers

    What is the main purpose of the cladding in a fiber optic cable?

    <p>To reflect stray light pulses</p> Signup and view all the answers

    Which type of fiber optic cable allows for very long cable lengths due to its small core?

    <p>Single-mode fiber</p> Signup and view all the answers

    What is a key advantage of fiber optic cabling compared to other network media?

    <p>Immune to electromagnetic interference (EMI)</p> Signup and view all the answers

    What is a disadvantage of fiber optic cables?

    <p>They are very expensive.</p> Signup and view all the answers

    In a plenum space, what type of cabling is required for fire safety?

    <p>Plenum rated cabling</p> Signup and view all the answers

    Which type of fiber optic cable transmits multiple light rays for multiple data channels?

    <p>Multi-mode fiber</p> Signup and view all the answers

    What happens when a fiber optic cable is bent too much?

    <p>The internal core can break.</p> Signup and view all the answers

    Why is twisted pair cabling considered a security risk?

    Signup and view all the answers

    What is the primary advantage of RG-6 coaxial cables over RG-59 cables?

    <p>RG-6 cables offer lower signal loss over long distances.</p> Signup and view all the answers

    Which type of connector is commonly associated with coaxial cables?

    <p>F-type connector</p> Signup and view all the answers

    What is one key disadvantage of using coaxial cables?

    <p>Requires splitters to connect multiple devices.</p> Signup and view all the answers

    What does UTP stand for in twisted pair cabling?

    <p>Unshielded Twisted Pair</p> Signup and view all the answers

    What is a major advantage of using STP over UTP cabling?

    <p>STP cabling protects against electromagnetic interference.</p> Signup and view all the answers

    Which twisted pair category supports transfer speeds of up to 1 Gbps?

    <p>Cat 5e</p> Signup and view all the answers

    How do twisted pair cables reduce cross-talk?

    <p>By twisting pairs of wires together.</p> Signup and view all the answers

    What is the characteristic feature of Cat 7 and Cat 8 cables?

    <p>They require shielded twisted pair.</p> Signup and view all the answers

    What type of connector is typically used with twisted pair cabling?

    <p>RJ45 connector</p> Signup and view all the answers

    Which of the following is a disadvantage of twisted pair cabling?

    <p>It has high susceptibility to EMI.</p> Signup and view all the answers

    How are RJ11 connectors different from RJ45 connectors?

    <p>RJ11 looks like a smaller RJ45 and has four pins.</p> Signup and view all the answers

    How does the frequency of twisting affect a twisted pair cable's performance?

    <p>Tighter twists reduce cross-talk and EMI.</p> Signup and view all the answers

    What is the primary use of RG-6 coaxial cables?

    <p>Connecting to cable televisions and satellite systems.</p> Signup and view all the answers

    What is the maximum speed supported by Cat 5 cables?

    <p>1 Gbps</p> Signup and view all the answers

    What is a disadvantage of fiber optic cabling compared to twisted pair and coaxial cables?

    <p>It requires special training for installation.</p> Signup and view all the answers

    What characteristic of single-mode fiber (SMF) allows it to achieve higher data transfer rates?

    <p>It has a very small core diameter.</p> Signup and view all the answers

    What role does the cladding serve in a fiber optic cable?

    <p>It reflects stray light pulses back into the core.</p> Signup and view all the answers

    What is a key advantage of fiber optic cables over twisted pair cables?

    <p>Greater immunity to electromagnetic interference.</p> Signup and view all the answers

    Why is wiretapping a concern with twisted pair cables?

    <p>They emit electromagnetic interference.</p> Signup and view all the answers

    What distinguishes multi-mode fiber cables from single-mode fiber cables?

    <p>They allow light to bounce, enabling multiple data channels.</p> Signup and view all the answers

    What is plenum rated cabling designed for?

    <p>Fire safety in concealed spaces.</p> Signup and view all the answers

    What can happen if a fiber optic cable is bent too much?

    <p>It can break the internal core.</p> Signup and view all the answers

    Which type of fiber optic cable uses a core diameter of about 10 microns?

    <p>Single-mode fiber.</p> Signup and view all the answers

    What is a common challenge associated with fiber optic cabling?

    <p>It has a higher installation cost.</p> Signup and view all the answers

    Study Notes

    Bound Media

    • Bound media is a category of network medium where communications are physically contained within a cable.
    • Bound media includes coaxial cable, twisted pair cable, and fiber optic cable.

    Coaxial Cable

    • Coaxial cable is composed of an inner conductor, insulator, metallic shield, and a plastic jacket.
    • Coaxial cables are used for video transmission in CCTV systems.
    • Coaxial cables are also used for cable televisions, satellite television, and cable modems.
    • RG-59 coaxial cables are used for video transmission and have higher signal loss than RG-6 cables.
    • RG-6 coaxial cables have lower signal loss than RG-59 cables and are becoming the standard choice for cable televisions, satellite television, and cable modems.
    • Coaxial cables use F-type connectors for connections.

    Twisted Pair Cable

    • Twisted pair cable is the most common network medium.
    • Twisted pair cable is composed of eight copper wires twisted into four pairs.
    • UTP stands for unshielded twisted pair cabling, it's cheap and does not shield against external electromagnetic interference (EMI).
    • STP stands for shielded twisted pair cabling, it's more expensive but provides shielding against external EMI.
    • Twisting the wires helps reduce cross-talk which is the interference generated between the twisted pairs by EMI.
    • Twisted pair cables use RJ-45 connectors for connections with 8 pins.
    • RJ-11 connectors for connections with 4 pins are used with Cat 1 twisted pair cabling for telephone systems.

    Fiber Optic Cable

    • Fiber optic cable uses light pulses to transmit data.
    • Fiber optic cables are composed of a glass or plastic central core surrounded by cladding, and one or two protective layers.
    • Single-Mode Fiber (SMF) uses a single light ray for data transmission and utilizes a small core. It supports longer cable lengths and high data transfer rates.
    • Multi-Mode Fiber (MMF) uses multiple light rays and a larger core, allowing multiple data channels. However, this also diffuses light which reduces the maximum cable length.

    Plenum Cable

    • Plenum rated cable is fire-resistant and can only be used in plenums which are spaces above false ceilings and below raised floors.
    • Plenum rated cable is essential because it prevents fires from spreading through the cable from room to room.
    • Using plenum rated cable is important for ensuring building codes and fire safety regulations are followed.

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    Description

    Test your knowledge on bound media in networking. This quiz covers various types of cable, including coaxial and twisted pair cables, their components, uses, and characteristics. Learn about the differences between RG-59 and RG-6 coaxial cables and more.

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