SG0-001 · Question #81
The technician has been told to install a cable between buildings for a new4Gbps link. The distance between the buildings is approximate^ 500 meters (1640 feet). Which of the following cable options s
The correct answer is A. Single-mode. For a 4Gbps link spanning 500 meters between buildings, single-mode fiber optic cable is the most appropriate choice due to its superior distance and bandwidth capabilities.
Question
The technician has been told to install a cable between buildings for a new4Gbps link. The distance between the buildings is approximate^ 500 meters (1640 feet). Which of the following cable options should be used?
Options
- ASingle-mode
- BCAT6
- CMultimode
- DTwin AX
How the community answered
(65 responses)- A91% (59)
- B6% (4)
- C2% (1)
- D2% (1)
Why each option
For a 4Gbps link spanning 500 meters between buildings, single-mode fiber optic cable is the most appropriate choice due to its superior distance and bandwidth capabilities.
Single-mode fiber optic cable is designed to transmit data over much longer distances and at higher bandwidths compared to multimode fiber or copper cabling, making it ideal for a 500-meter, 4Gbps link between buildings. Its smaller core allows for less signal dispersion, enabling greater reach.
CAT6 copper cable is limited to significantly shorter distances, typically 100 meters or less for high-speed Ethernet, making it unsuitable for a 500-meter run.
While multimode fiber supports high bandwidth, its effective transmission distance is less than single-mode fiber, especially at higher speeds, making single-mode a more robust choice for 500 meters.
Twinax cables are a type of Direct Attach Copper used for very short-range, high-speed connections, typically within racks, and cannot span 500 meters.
Concept tested: Fiber optic cable types and distance limitations
Source: https://www.cisco.com/c/en/us/products/collateral/interfaces-modules/gigabit-ethernet-gbic-sfp-modules/product_data_sheet0900aecd8033f885.html
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