Network Cabling Practice Questions

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Questions and Answers

Which technology is best for powering IP cameras and wireless access points using existing Ethernet infrastructure?

  • Power Line Communication (PLC)
  • Power over WiFi (PoWiFi)
  • Power over Ethernet (PoE) (correct)
  • Power over Cable (PoC)

What could likely cause an increasing number of input/output errors on router interfaces?

  • Incorrect subnet mask
  • IP address conflict
  • Incorrect VLAN configuration
  • Duplex mismatch (correct)

For optimal performance in connecting a television to a cable modem, which coaxial cable should be selected?

  • RG-6 (correct)
  • RG-59
  • RG-8/U
  • RG-58

In an office with significant electromagnetic interference (EMI), which type of twisted pair cabling provides the best protection?

<p>STP (Shielded Twisted Pair) (B)</p> Signup and view all the answers

Which aspect differentiates RG-6 from RG-58 and RG-8/U in cable type applications?

<p>Impedance rating (C)</p> Signup and view all the answers

Which category of twisted pair cabling should be used to support 1 gigabit per second data transmission over 100 meters while keeping costs low?

<p>Category 5e (A)</p> Signup and view all the answers

What type of Ethernet cable is necessary for connecting two PCs directly to allow file transfer without any intermediary device?

<p>Crossover cable (B)</p> Signup and view all the answers

When selecting a fiber optic cabling for long distances to minimize data corruption due to modal dispersion, which type should be chosen?

<p>Single Mode Fiber (SMF) (B)</p> Signup and view all the answers

Which type of twisted pair cabling is not recommended for 1 gigabit per second speeds due to its electrical characteristics?

<p>Category 5 (C)</p> Signup and view all the answers

Which fiber optic cabling option is specifically designed to carry light directly down the fiber without multiple modes of propagation?

<p>Single Mode Fiber (SMF) (B)</p> Signup and view all the answers

Which coaxial cable type should be used for optimal performance when connecting a television and a cable modem?

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

What type of twisted pair cabling should be chosen to minimize electromagnetic interference (EMI) in an office environment?

<p>STP (Shielded Twisted Pair) (A)</p> Signup and view all the answers

Which category of twisted pair cabling is most cost-effective for supporting 1 gigabit per second data transmission over 100 meters?

<p>Category 5e (D)</p> Signup and view all the answers

What type of Ethernet cable should be used to enable effective communication between two directly connected PCs without using a switch or router?

<p>Crossover cable (A)</p> Signup and view all the answers

What type of fiber optic cabling should be selected to reduce data corruption from multimode delay distortion over long distances?

<p>Single Mode Fiber (SMF) (A)</p> Signup and view all the answers

Flashcards

1000BASE-T

A networking standard for transmitting data at 1 gigabit per second over twisted-pair cabling.

Category 5e Cabling

Type of twisted-pair cabling that supports 1000BASE-T standard for 1 gigabit per second data transmission over distances up to 100 meters.

Crossover Cable

Ethernet cable specifically designed to connect two devices with identical pinouts (like two PCs) directly, without a switch or router.

Direct Connection

Connecting two devices directly together, bypassing network infrastructure like switches or routers.

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Single Mode Fiber (SMF)

Type of fiber optic cabling that transmits light in a single mode, preventing modal dispersion and ensuring data integrity over long distances.

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Power over Ethernet (PoE)

A technology that allows electrical power to be transmitted along with data over Ethernet cables, simplifying device deployment and reducing the need for extra power outlets.

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Input/Output Errors

These errors occur when data packets are not transmitted or received correctly on network interfaces, potentially indicating faulty hardware, configuration issues, or network congestion.

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Duplex Mismatch

A situation where devices on a link have different transmission modes, such as half-duplex (one device transmits at a time) and full-duplex (both devices transmit simultaneously), leading to data collisions and errors

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RG-6 Cable

A coaxial cable type commonly used in home entertainment systems and for connections to cable modems due to its increased bandwidth and resistance to interference, making it suitable for high-definition signals and cable TV.

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Shielded Twisted Pair (STP)

A type of twisted pair cable that includes an extra layer of shielding, either foil or braided metal, providing superior protection against electromagnetic interference (EMI) compared to unshielded twisted pair (UTP).

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What cable type should you use for maximum data transfer speed in a home entertainment system?

RG-6 coaxial cable offers optimal performance for home entertainment systems due to its low signal loss and high bandwidth capacity, making it ideal for delivering HD video and audio signals.

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Which twisted-pair cable type offers the best EMI protection?

Shielded Twisted Pair (STP) cabling provides superior EMI protection compared to Unshielded Twisted Pair (UTP). It features a metallic shield that surrounds the wires, effectively blocking electromagnetic interference.

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What category cable is needed for 1 Gbps data transfer over 100 meters?

Category 5e twisted-pair cabling meets the 1000BASE-T standard for gigabit Ethernet data transfer over a 100-meter distance, providing a cost-effective solution for network upgrades.

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Which type of cable connects two PCs directly?

A crossover cable is specifically designed to connect two PCs directly without the need for a switch or router, ensuring proper signal flow.

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What kind of fiber optic cable minimizes data loss over long distances?

Single Mode Fiber (SMF) minimizes signal degradation over long distances by transmitting light in a single mode, preventing multimode delay distortion.

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Study Notes

Network Cabling - Practice Questions

  • Q1: For a home entertainment system connecting to a TV and cable modem, RG-6 coaxial cable is recommended for optimal performance, given electrical characteristics.

  • Q2: In office environments with high electromagnetic interference (EMI), Shielded Twisted Pair (STP) cabling is best for protection, as Unshielded Twisted Pair (UTP) is less effective. Plenum-rated cabling is not specifically for EMI protection, but instead for fire safety from toxic fumes.

  • Q3: To support 1 gigabit per second data transmission over 100 meters, minimizing cost, Category 5e twisted pair cabling is recommended for compatibility with the 1000BASE-T standard.

  • Q4: To connect two PCs directly for file transfer without a switch, use a crossover cable to allow effective communication.

  • Q5: For long-distance fiber optic networks minimizing data corruption from multimode delay distortion, Single Mode Fiber (SMF) is the preferable choice over Multimode Fiber (MMF).

  • Q6: In high-density fiber network panels, the MTRJ connector is best for maximizing port density, compared to ST, LC, and SC connectors.

  • Q7: For a campus fiber optic network, supporting 1 gigabit per second with distances not exceeding 220 meters, 1000BASE-SX with multimode fiber is financially and practically optimal

  • Q8: PoE (Power over Ethernet) is the ideal technology to power devices like IP cameras and wireless access points, reducing reliance on extra power outlets in a new office building.

  • Q9: A potential cause for high input/output errors on router interfaces is a duplex mismatch (one end of the connection is half-duplex, the other is full-duplex), which decreases performance and increases errors.

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CCNA 200-301 Network Cabling Practice Questions PDF

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