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Exam 300-425 topic 1 question 215 discussion

Actual exam question from Cisco's 300-425
Question #: 215
Topic #: 1
[All 300-425 Questions]

An engineer has deployed Cisco Aironet 3800 Series APs with switches that support 802.11bz on existing CAT-5e cabling. Which value is the maximum distance supported to achieve up to 5 Gb speed?

  • A. 30 m
  • B. 40 m
  • C. 70 m
  • D. 90 m
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Suggested Answer: C 🗳️

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55f2ace
3 weeks, 4 days ago
Selected Answer: D
IEEE 802.3bz (mGig or N-BASET) can be used on CAT5e cabling up to 100 meters long. This standard allows for speeds of 2.5 Gbps and 5 Gbps on existing twisted-pair copper cabling According to Ethernet standards, the maximum length of a Cat5e cable run is 100 meters (or 328 feet). It is possible to go further by using a POE repeater.
upvoted 1 times
55f2ace
3 weeks, 4 days ago
C is correct according with Cisco pdf link
upvoted 1 times
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grivanoj
3 months, 1 week ago
Selected Answer: B
An engineer has deployed Cisco Aironet 3800 Series APs with switches that support 802.11bz on existing CAT-5e cabling. Which value is the maximum distance supported to achieve up to 5 Gb speed? When deploying Cisco Aironet 3800 Series APs with switches that support 802.11bz on existing CAT-5e cabling, the maximum distance supported to achieve up to 5 Gb speed is 30-50 meters
upvoted 1 times
grivanoj
3 months, 1 week ago
Keep lengths of CAT-5e between 30-50m or below when using dense cable bundles; for example, cables in a dense area like a pipe or places where five or more cables are tied in a bundle. https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_cisco_aironet_series_2800_3800_access_point_deployment_guide/b_cisco_aironet_series_2800_3800_access_point_deployment_guide_chapter_0101.pdf
upvoted 1 times
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AlmightKas
5 months, 1 week ago
On the third page in the table at the bottom, it says the cable length should be between 30-70m. https://www.cisco.com/c/en/us/td/docs/wireless/controller/technotes/8-3/b_cisco_aironet_series_2800_3800_access_point_deployment_guide/b_cisco_aironet_series_2800_3800_access_point_deployment_guide_chapter_0101.pdf
upvoted 3 times
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