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Let us be honest: the 31861X exam is hard, and the material you choose matters more than the hours you log. In 2026, the Lead2PassExam package gives you 61 practice questions designed by experts and professors who know this exam well.

Avaya 31861X Exam Overview:

Certification Vendor:Avaya
Exam Name:Avaya OneCloud™ UCaaS Design Certified Exam 31861X
Exam Number:31861X
Exam Format:Scenario-based questions, Multiple choice
Available Languages:English
Sample Questions: DOWNLOAD DEMO
Exam Way:Online proctored or test center delivery (commonly via Pearson VUE)

Avaya 31861X Exam Syllabus Topics:

SectionObjectives
Topic 1: Solution Design Principles- Customer requirements analysis
  • 1. Designing UCaaS solutions based on business needs
    • 2. Scalability and availability considerations
      Topic 2: Avaya OneCloud UCaaS Architecture- Core platform components and services
      • 1. OneCloud UCaaS deployment models
        • 2. Core architecture and service layers
          Topic 3: Network and QoS Design- Enterprise network considerations
          • 1. Latency, jitter, and packet loss management
            • 2. QoS policies for voice and video traffic
              Topic 4: Security and Identity Management- Secure UCaaS deployment
              • 1. Authentication and access control
                • 2. Encryption and secure signaling/media transport
                  Topic 5: SIP and VoIP Fundamentals- Voice over IP protocols
                  • 1. Media handling and codecs
                    • 2. SIP call flows and signaling basics
                      Topic 6: Migration and Integration- Enterprise transition to UCaaS
                      • 1. Legacy PBX migration strategies
                        • 2. Integration with CRM and enterprise applications

                          Avaya OneCloud™ UCaaS Design Certified Exam: Decide With Evidence

                          Avaya recommends these training resources for the Avaya OneCloud™ UCaaS Design Certified exam:

                          Follow the training with steady self-testing — the 61 practice questions from Lead2PassExam help you apply theory and fill any gaps the training leaves.

                          The 31861X exam is a Avaya certification exam validating the Avaya OneCloud™ UCaaS Design Certified syllabus shown above. Candidates in 2026 start with Lead2PassExam's 61 practice questions, available as a printable PDF, a Windows Desktop Test Engine, and an Online Test Engine — three versions of the same materials.

                          Lead2PassExam issues a full refund if you take the Avaya OneCloud™ UCaaS Design Certified exam within 60 days of purchase and do not pass. The policy does not apply if the exam is taken within 3 days of purchase, if the exam was never actually taken, or to free materials or expired orders, and the candidate name must match the payer name. Submit a scan of your enrollment slip and the official Score Report PDF within 2 days of the exam; claims are processed within 7 days. Alternatively, exchange for two free exam products of equal value and keep your original update service. Orders arrive by email within 1 minute — contact support if nothing arrives within 2 hours.

                          The official Avaya OneCloud™ UCaaS Design Certified outline defines 6 domains. The leading three are Security and Identity Management, Avaya OneCloud UCaaS Architecture, and Network and QoS Design. The full list is in the topics section above, and Lead2PassExam's 61 practice questions cover each one.

                          The official Avaya page publishes the current question count and duration; review it before your test date.

                          The Avaya OneCloud™ UCaaS Design Certified exam welcomes candidates from different ages and fields; Avaya sets any formal requirements. Verify the current rules on the official Avaya exam page before registering.

                          Three versions of the same study materials: a printable, expert-prepared PDF with free demo download and instant access; a Desktop Test Engine for Windows with customizable simulation and timed modes that works offline; and an Online Test Engine for any browser on Windows, Mac, Android, and iOS with test history and performance review. All 61 practice questions are identical across versions. Every purchase includes 365 days of free updates, a 50% renewal discount afterward, and unlimited computer installations.

                          Scoring and fees are published by Avaya and may change; verify the current figures on the official site.

                          Online proctored or test center delivery (commonly via Pearson VUE) Register for the Avaya OneCloud™ UCaaS Design Certified exam through these official channels:

                          After booking, Lead2PassExam delivers your practice questions within 1 minute — preparation starts the same day.

                          Avaya OneCloud™ UCaaS Design Certified Sample Questions:

                          The following endpoints are being requested for an Avaya Aura solution:
                          * 300 9611G telephones running H.323
                          * 100 9641GS telephones running SIP
                          * 50 J129 telephones
                          * 50 Analog telephones
                          * 20 DCP telephones
                          * 75 Avaya Equinox clients
                          How many registrations will Session Manager have to support?

                          • A. 225
                          • B. 75
                          • C. 175
                          • D. 100
                          Reveal Solution  Discussion  0

                          Correct Answer: B  🗳️

                          Yourare designing an addition to a customer's existing Avaya Aura system. The addition will include 575 IP sets, of which 200 will also use Avaya Equinox for the Desktop, 175 will use Desktop P2P Video, and 25 of them will also need Extension to Cellular (EC500). There are 75 other new users who will use Avaya Equinox for iOS as their only UC Client or endpoint. The customer does not want a la carte licensing for applications not covered by Core Suite, and will purchase other Avaya Aura Suites as required.
                          How many Core Suite licenses are needed for the addition?

                          • A. 650
                          • B. 575
                          • C. 675
                          • D. 625
                          Reveal Solution  Discussion  0

                          Correct Answer: B  🗳️

                          A customer is interested in deploying geo-redundant System Managers.
                          Which two requirements would they need to know? (Choose two.)

                          • A. Both servers must be on the same IP subnet.
                          • B. The two servers must have the same version of software,
                          • C. The two servers can reach each other on the network.
                          • D. Both servers must have the same IP address.
                          Reveal Solution  Discussion  0

                          Correct Answer: A,C  🗳️

                          You are working on a solution design for an Avaya Aura 8.1 solution and estimating how many Digital Signaling Processor (DSP) resources will be needed.
                          Which two types of calls require DSP resources? (Choose two.)

                          • A. SIP to H.323 station calls
                          • B. H.323 to H.323 calls
                          • C. SIP to SIP calls
                          • D. ad hoc conference calls
                          Reveal Solution  Discussion  0

                          Correct Answer: A,C  🗳️

                          A customer has provided the following requirements for a basic telephone user:
                          * Two line appearances
                          * Basic telephony
                          * "3 rings then cover to voice mail"
                          * No shared line appearances
                          * Cheapest telephone
                          * Possible low power requirements
                          Which telephone type would be a good choice for the basic user?

                          • A. J129
                          • B. 9641
                          • C. J179
                          • D. 9611G
                          Reveal Solution  Discussion  0

                          Correct Answer: C  🗳️

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