Free MS-721: Collaboration Communications Systems Engineer Exam Questions and Answers
Collaboration Communications Systems Engineer is exam MS-721, part of Microsoft Certifications. Microsoft exam codes name the solution area rather than the level — AZ for Azure, DP for data, MS for Microsoft 365, PL for Power Platform, SC for security, AI for Azure AI — with one reliable rule: any exam numbered 900 or 901 is Fundamentals. Every technical exam is scored from 1 to 1000 with 700 to pass, a scaled score Microsoft notes is explicitly not 70% of the marks.
The first 10 questions on this page are free to read, answers included — no account and no card. A plan opens the rest of the bank, the full timed practice test and your weak-topic reporting.
Last updated: September 10, 2026
- Exam code
- MS-721
- Provider
- Microsoft
- Questions in our bank
- 1000+
- Free to read
- First 10, with answers
- Official page
- Official Exam website
- Our test mode duration & pass mark
- 130 mins · 70%
Recommended: Switch to Test Mode to start a practice test that simulates the real exam experience.
Question #1
What protocol is primarily used for signaling in VoIP communications?
Please select an optionIncorrectCorrect answer: A
SIP (Session Initiation Protocol) is used to establish and manage communication sessions.
Was this answer correct?Question #2
How does Quality of Service (QoS) benefit VoIP communications?
Please select an optionIncorrectCorrect answer: A
QoS ensures that VoIP traffic is prioritized on the network to maintain call quality.
Was this answer correct?Question #3
What is the maximum number of participants allowed in a Teams live event?
Please select an optionIncorrectCorrect answer: C
Teams live events can support up to 10,000 participants.
Was this answer correct?Question #4
Which component of Microsoft Teams is responsible for real-time collaboration?
Please select an optionIncorrectCorrect answer: A
Channels in Microsoft Teams are dedicated spaces for conversation and collaboration among team members.
Was this answer correct?Question #5
What does Direct Routing in Teams allow?
Please select an optionIncorrectCorrect answer: C
Direct Routing allows Microsoft Teams to connect calls to the Public Switched Telephone Network (PSTN).
Was this answer correct?Question #6
What is the function of a Session Border Controller (SBC) in VoIP?
Please select an optionIncorrectCorrect answer: D
SBCs ensure secure communication between different networks and devices in VoIP systems.
Was this answer correct?Question #7
In Microsoft Teams, what feature helps manage call queues?
Please select an optionIncorrectCorrect answer: B
Call Queues in Microsoft Teams allow for effective management of incoming calls to a coordinated response.
Was this answer correct?Question #8
Which Microsoft tool provides insights into call quality and reliability?
Please select an optionIncorrectCorrect answer: D
The Microsoft Call Quality Dashboard helps analyze and understand call performance metrics.
Was this answer correct?Question #9
How can you secure communications in Microsoft Teams?
Please select an optionIncorrectCorrect answer: C
Enabling encryption ensures that data transmitted over Teams is secure from potential eavesdropping.
Was this answer correct?Question #10
What is a benefit of using Microsoft Teams for collaboration?
Please select an optionIncorrectCorrect answer: A
Microsoft Teams allows team members to collaborate in real-time using various tools integrated into the platform.
Was this answer correct?
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FAQ
Learn More: https://learn.microsoft.com/en-us/credentials/
- Q1: What is the MS-721: Collaboration Communications Systems Engineer exam?
- A: MS-721: Collaboration Communications Systems Engineer is a Microsoft certification exam. Judging by the questions in our bank, it concentrates on microsoft, chat, voip, meeting and communications.
- Q2: What topics does the MS-721: Collaboration Communications Systems Engineer exam cover?
- A: Questions in our MS-721: Collaboration Communications Systems Engineer bank cluster around microsoft, chat, voip, meeting, communications, direct, calls and routing. Working through the full set is the quickest way to find which of these you are weakest on.
- Q3: How should I prepare for MS-721: Collaboration Communications Systems Engineer?
- A: Work through the MS-721: Collaboration Communications Systems Engineer practice questions here, checking your answer on each one, then sit the practice test to rehearse the exam under timed conditions before the real thing.
- Q4: Are these real MS-721: Collaboration Communications Systems Engineer exam questions?
- A: They are drawn from officially released past questions and from community members who have sat MS-721: Collaboration Communications Systems Engineer. Answers are verified and updated weekly.
- Q5: Where do I register for the MS-721: Collaboration Communications Systems Engineer exam?
- A: Register through Microsoft directly at https://learn.microsoft.com/en-us/credentials/. Exampractice is not affiliated with Microsoft and does not administer the exam.
- Q6: Is there a free MS-721: Collaboration Communications Systems Engineer sample?
- A: Yes. Every MS-721: Collaboration Communications Systems Engineer page shows a free sample of real questions. Upgrading opens the full bank and the practice test.
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- A: Microsoft Certification Exams validate your expertise in using and managing Microsoft’s technologies and solutions, including Azure, Office 365, Windows, and more. These certifications demonstrate your proficiency in deploying, configuring, and optimizing Microsoft products to support business operations and IT infrastructure.
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