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Exam SC-300 topic 2 question 23 discussion

Actual exam question from Microsoft's SC-300

Question #: 23
Topic #: 2

You have a Microsoft 365 tenant.
All users have mobile phones and laptops.
The users frequently work from remote locations that do not have Wi-Fi access or mobile phone connectivity. While working from the remote locations, the users connect their laptop to a wired network that has internet access.
You plan to implement multi-factor authentication (MFA).
Which MFA authentication method can the users use from the remote location?

A. a verification code from the Microsoft Authenticator app
B. security questions
C. voice
D. SMS

Show Suggested Answer

Suggested Answer: A 🗳️

by clouddemohk at May 2, 2021, 2:21 p.m.

Comments

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bobicos

Highly Voted 3 years, 7 months ago

Security questions is not an option for MFA. Using the Authenticator app does not need network connectivity, thus the correct value

upvoted 45 times

sezza_blunt

3 years, 5 months ago

The default behaviour of the Authenticator app is to send a notification to your phone, which does require mobile connectivity. However, the user can choose "Sign in another way" and then "Use a verification code from my mobile app" - this method does not require mobile connectivity. So yes, the correct answer is A "a verification code from the Microsoft Authenticator app"

upvoted 18 times

melatocaroca

3 years, 5 months ago

WRONG do not have Wi-Fi access or mobile phone connectivity.

upvoted 2 times

Acbrownit

2 years, 7 months ago

The Authenticator app's verification codes are synced using an algorithm and seed that are shared between offline and the app, so the app will continue to generate valid numbers regardless of connectivity. The notification method requires connectivity, though. Voice is invalid, because it should be assigned to a land-line and even if assigned to a cell number, it wouldn't work without connectivity.

upvoted 8 times

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ReffG

2 years, 10 months ago

no it is correct. TOTP also works offline.

upvoted 3 times

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J4U

3 years, 1 month ago

Yes, it Authenticator app don't need phone connectivty. https://support.microsoft.com/en-us/account-billing/common-problems-with-the-microsoft-authenticator-app-12d283d1-bcef-4875-9ae5-ac360e2945dd

upvoted 9 times

BluMoon

2 years, 5 months ago

Thanks for the link. This is correct, it specifically says that no data connection is needed under the heading "Verification codes when connected".

upvoted 1 times

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lime568

2 years, 8 months ago

but need internet. no Wifi no mobile phone

upvoted 1 times

tinhnd

1 year, 2 months ago

All OTP apps or FIDO2 don't need internet connection to work.

upvoted 1 times

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Benkyoujin

2 years, 6 months ago

Incorrect and you can test this.

upvoted 1 times

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Cheif

3 years, 7 months ago

But they don't have mobile phones? how will they access the mobile authenticator app?

upvoted 1 times

tinhnd

1 year, 2 months ago

Reading the requirements carefully is an essential skill to take the test. "All users have mobile phones & laptop". Which they don't have is Wi-fi and mobile connectivity.

upvoted 1 times

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B0

3 years, 6 months ago

but they do :) All users have mobile phones and laptops.

upvoted 4 times

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Cheif

3 years, 7 months ago

Scratch that A is the correct answer, doesn't need internet IMO

upvoted 7 times

Ed2learn

3 years, 5 months ago

doesn't need internet but the question states "no connectivity" which to me means no signal to receive. Not sure the right answer is here.

upvoted 2 times

Ed2learn

1 year, 1 month ago

years later I understand the question. They do have connectivity to the internet. Its wired not wifi. P.S. don't forget to renew your certifications or you too will comment on your comment.

upvoted 4 times

G5kawde

8 months, 2 weeks ago

hahaha

upvoted 1 times

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melatocaroca

3 years, 5 months ago

WRONG do not have Wi-Fi access or mobile phone connectivity.

upvoted 1 times

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leeuw86

Highly Voted 3 years, 5 months ago

Had this question in exam today. Option C) voice was replaced by Windows Hello for Business. Also Option a) was notification from Authenticator App

upvoted 18 times

Ed2learn

3 years, 5 months ago

Windows Hello solves the mobile phone connectivity issue. The biometric info is stored on the local machine so this will work. It doesn't require internet or mobile connectivity. Looks like Microsoft corrected the answer choices.

upvoted 4 times

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sezza_blunt

3 years, 5 months ago

That changes it a bit. The notification requires mobile connectivity. Did you choose WHFB as the correct answer?

upvoted 2 times

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easypeacy

Most Recent 1 year, 2 months ago

maybe they are considering that you set the laptop as hotspot for your mobile and then use auth app ....

upvoted 1 times

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EmnCours

1 year, 4 months ago

Selected Answer: A

Correct Answer: A

upvoted 1 times

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dule27

1 year, 5 months ago

Selected Answer: A

A. a verification code from the Microsoft Authenticator app

upvoted 1 times

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LeTrinh

1 year, 9 months ago

https://drake.teamdynamix.com/TDClient/2025/Portal/KB/ArticleDet?ID=50929

upvoted 2 times

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[Removed]

1 year, 12 months ago

Selected Answer: A

Correct answer.

upvoted 2 times

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PadyLoki

2 years, 4 months ago

Answer would be A, since all users have a mobile and laptop, whilst they may not have mobile connectivity, they can still use the Authenticator App for a OTP

upvoted 1 times

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HenryVo

2 years, 5 months ago

A is the correct answer. Authentication app no need Internet. We can change by input One-time Password Code in App auto random in 30s.

upvoted 1 times

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Tokiki

2 years, 5 months ago

A is correct

upvoted 1 times

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sapien45

2 years, 5 months ago

Verification codes when connected Q: Do I need to be connected to the Internet or my network to get and use the verification codes? A: The codes don't require you to be on the Internet or connected to data, so you don't need phone service to sign in. Additionally, because the app stops running as soon as you close it, it won't drain your battery.

upvoted 1 times

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shine98

2 years, 5 months ago

On the exam - June 12, 2022

upvoted 1 times

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YetiSpaghetti

2 years, 6 months ago

Selected Answer: A

A is obviously the answer. Voice needs mobile connectivity. MFA authenticators do not.

upvoted 1 times

RandomNickname

2 years, 5 months ago

Voice doesn't necessary need to be do a mobile phone, and could be to a landline, since the criteria required to enter on O365 is a phone number, irrespective of what type. This is something I've implemented before.

upvoted 1 times

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RandomNickname

2 years, 6 months ago

Question needs more information since it can be both A or C. See below for accept MFA methods; https://docs.microsoft.com/en-us/azure/active-directory/authentication/concept-authentication-methods Reading the question, it could be C, since there is no “WIFI or mobile phone connectivity” to download the authenticator app to then be able to scan the QR code and register, so answer logically should be C, see comment from user “SnottyPudding”. However if answer C: has changed in the exam to “Windows Hello” this is likely correct, or if question area is reworded, referencing apps exist or some such similar rewording, answer could be A. Essentially, be careful on test day and read carefully.

upvoted 1 times

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jasonga

2 years, 6 months ago

you can put your phone into airplane mode and test this A is correct you can still use the code,

upvoted 1 times

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sunilkms

2 years, 6 months ago

Selected Answer: A

the question says it clearly that no wifi access to mobile phone connectivity, hence, voice, and SMS is not an option, hence authenticator app is the correct option.

upvoted 1 times

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Nilz76

2 years, 7 months ago

This question was in the exam 28/April/2022

upvoted 1 times

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