JNCIA-DC: Juniper Networks Certified Associate – Data Center — Question 8

When designing for a multiple frequency deployment (5 GHz and 2.4 GHz), which statement is correct?

Answer options

• A. The coverage of the multiple bands at the same power will be identical.
• B. 5 GHz is a higher frequency and so will travel further and penetrate walls better.
• C. 5 GHz should generally be used for planning.
• D. 802. 11ac is available in both frequency bands so the design frequency is not important.

Correct answer: C

Explanation

The correct answer is C because 5 GHz is generally preferred for high-density environments due to its higher capacity and speed, despite having a shorter range. Option A is incorrect because the coverage differs between the bands; 2.4 GHz has better range but lower speeds. Option B is misleading as 5 GHz does not penetrate walls as effectively as 2.4 GHz. Option D is also wrong because while 802.11ac supports both bands, the design and deployment strategy can significantly impact performance.