An engineer is tuning a Wi-Fi network in a factory with heavy machinery that causes intermittent RF interference. The engineer notices that the AP is using a coding rate of 5/6. To improve reliability without changing the modulation scheme, what should the engineer do?

Disable FEC entirely to reduce overhead.

Increase the coding rate to 7/8 to send more data bits.

Change the coding rate to 3/4 or 1/2 to add more redundancy.

Keep the coding rate at 5/6 but increase the AP's transmit power.

What is the primary purpose of modulation in a Wi-Fi transmission?

To filter out interference from other wireless devices

To convert the RF signal into a digital bit stream at the receiver

To amplify the signal power so it can reach farther distances

To encode data bits onto an RF carrier wave so the information can travel through the air

What does an MCS (Modulation and Coding Scheme) index represent in Wi-Fi?

The number of spatial streams used in a transmission

The channel bandwidth selected for the transmission

The signal strength required to maintain a connection

A specific combination of modulation type and coding rate that determines a data rate

Juniper NetworksCertified Specialist, Mist AI Wireless (JNCIS-MistAI)

Domain 1Objective 4

Modulation and Coding JN0-452 Practice Questions (Page 3)

Part of the Wi-Fi Fundamentals domain, which makes up ~20% of our current practice bank. Juniper Networks does not publish an official question count, but from its 90-minute exam (~35–60 total, ~7–12 in this domain), expect 1–2 from this objective — we provide 25 practice questions to prepare you well beyond it. (estimate)

25questions here

5free pages

7concepts

Questions 11–15

11application · medium
An engineer is tuning a Wi-Fi network in a factory with heavy machinery that causes intermittent RF interference. The engineer notices that the AP is using a coding rate of 5/6. To improve reliability without changing the modulation scheme, what should the engineer do?
Select an answer first
12application · medium
An engineer is analyzing a packet capture from a Wi-Fi 5 (802.11ac) client. The client is using an 80 MHz channel with 2 spatial streams. The MCS index in the capture is 7. What is the approximate data rate the client is achieving?
Select an answer first
13foundation · easy
Which Wi-Fi modulation scheme transmits the fewest bits per symbol?
Select an answer first
14foundation · easy
What is the primary purpose of modulation in a Wi-Fi transmission?
Select an answer first
15foundation · easy
What does an MCS (Modulation and Coding Scheme) index represent in Wi-Fi?
Select an answer first

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Modulation and Coding JN0-452 Practice Questions (Page 3)

Questions 11–15

An engineer is tuning a Wi-Fi network in a factory with heavy machinery that causes intermittent RF interference. The engineer notices that the AP is using a coding rate of 5/6. To improve reliability without changing the modulation scheme, what should the engineer do?

An engineer is analyzing a packet capture from a Wi-Fi 5 (802.11ac) client. The client is using an 80 MHz channel with 2 spatial streams. The MCS index in the capture is 7. What is the approximate data rate the client is achieving?

Which Wi-Fi modulation scheme transmits the fewest bits per symbol?

What is the primary purpose of modulation in a Wi-Fi transmission?

What does an MCS (Modulation and Coding Scheme) index represent in Wi-Fi?

Keep studying — Wi-Fi Fundamentals