H11-811-ENU 무료 덤프문제 온라인 액세스

Which of the following statements are CORRECT about the PRA protocol? (Multiple Choice)

• A.The protocol is used for link multiplexing and error detection at the physical layer.
• B.The protocol consists of the physical layer, data link layer, and network layer.
• C.The standard protocol used at the data link layer is Q.921.
• D.The standard protocol used at the network layer is Q.931.

Which of the following is NOT a SIP protocol feature?

• A.Responsible for creating, modifying, and terminating sessions
• B.A transmission-layer protocol
• C.A text-based protocol
• D.Based on IP network

Which of the following statements are CORRECT about the instant conference service in U1900? (Multiple Choice)

• A.Users with Normal or higher privilege has the instant conference service enabled by default.
• B.Users with Advanced or higher privilege has the instant conference service enabled by default.
• C.The instant conference service is enabled for all uses by default.
• D.All the internal users can be invited.

Which of the following statements is INCORRECT about the QoS requirements for a VoIP network?

• A.The one-way delay should not exceed 300 ms.
• B.The average jitter should not exceed 30 ms.
• C.The packet loss rate should be less than 1%.
• D.Each call requires at least 21 kbit/s to 106 kbit/s bandwidth to ensure the voice quality.

How many timeslots are available for calls in PRA signaling?

• A.30
• B.31
• C.29
• D.32