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1. Which of the following signaling does the gatekeeper use to reject access authentication and address resolution requests and provide the resolution results?

2. Assume that T1 and T2 are two terminals registered in the same SC node area (with signaling routing enabled on the SC). T1 calls T2's number via the H.323 protocol, and then T1 and T2 communicate. Which of the following descriptions of the calling process is correct?

3. In the SC-SIP proxy registration scenario, in addition to opening the registered SC's SIP proxy through the SMC webpage, which of the following commands can also be used to open it?

4. In a unilateral scheduling scenario using point-based scheduling, after scheduling a venue through the VDC Client, which of the following descriptions of the venue status is wrong?

5. In a network with a built-in MCU terminal and an RSE, which of the following functions can be independently implemented on the terminal without the SMC?

6. Which of the following steps should be followed to recover SMC data in a dual-host scenario?

7. Which of the following descriptions of the SIP protocol is wrong?

8. The figure shows the main menu displayed on a TE30 terminal. What measures can be taken to restore the display to normal?

9. What type of RTCP message does the following diagram show?

10. The figure shows the status of a TE30 terminal. Which of the following operations cannot be performed on this terminal?

11. In a multi-channel cascade, how are the multi-channel usage priorities of the upstream and downstream MCUs allocated?

12. Which of the following is a disadvantage of NAPT?

13. When "PT=200" is in an RCTP message, which type of message does it represent?

14. In the SIP protocol, the response message "1xx" indicates which of the following options?

15. If a video conferencing terminal successfully registers with the SC via the SIP protocol, which of the following messages will the terminal periodically send to the SC to maintain the SIP registration?

16. The following figure shows the board slot information for the VP9660. Which of the following boards should be installed in slot 1?

17. The SMC system administrator can configure the automatic end time of a meeting on the Meeting Policy tab. Which of the following ranges does this meeting end time fall within?

18. Based on the information shown in the figure below, we can infer which color sampling method is used in this video stream?

19. Regarding the issue of lip sync during meetings, which of the following descriptions is wrong?

20. Which of the following is not a commonly used audio encoding method?

21. When an SMC conference administrator attempts to initiate a meeting, the message "Insufficient access numbers" appears, causing the meeting to fail. Which of the following reasons could be the cause?

22. When using static NAT to achieve public-private network traversal, when a public network terminal calls a private network terminal, which of the following statements is wrong?

23. Before compression encoding, a single frame of a 1080P image takes up 95MB of storage space. What is its color bit depth?

24. In a dual-SC H.460 public-private network traversal scenario, assuming SC1 is in the Trust zone and SC2 is in the DKZ zone, which of the following descriptions of the SC service IP and management IP configurations is wrong?

25. Mr Wang found that the SC's IP address was not configured. Which of the following commands can be used to configure the IP address of the LAN1 port of the independent SC? (Where X is the normal IP address)

26. Which of the following conference types does the Huawei SMC video conferencing system not support?

27. In a public-private network traffic traversal solution, if you want both public and private network users to be able to view the live video conference, which of the following recording server deployment methods offers the highest security?

28. In a Huawei video conferencing system with a bare metal SMC and SC configuration, what is the maximum number of concurrent calls supported by the network?

29. Which of the following codecs can be used for wideband voice?

30. Which of the following protocols does SIP call use to ensure media transmission security?

31. Before encoding and compression, if a 4K image uses a 48-bit color depth, which of the following is the storage space required for one original frame?

32. Which of the following RAS messages can be used to deregister a terminal from a gatekeeper?

33. Which of the following is not part of Huawei's video conferencing anti-packet loss design?

34. The SMC system administrator enabled the sc forced media routing policy on the SMC. Conference administrator John successfully booked a conference, but all parties were unable to join. Which of the following reasons could not be the cause of this failure?

35. When analyzing Wireshark packets, if you want to filter out SIP protocol packets between terminals T1 (IP address 192.168.1.100) and SC (IP address 192.168.1.212), which filter expression can be used?

36. Which of the following protocols is used to control conference media channels?

37. John wants to configure two NAT mappings for SC on the firewall, referring to the figure below. Which of the following address translation methods should he use?

38. 1. If a VP9660 is configured with four media boards (operation slots 2, 3, 8, and 9), which of the following media boards will the system select by default as the media board?

39. Which of the following statements is correct?

40. Which of the following is the correct ranking of the voice quality of different voice codec protocols?

41. The capability set of the T1 terminal includes two combined capabilities: one is {H.261, H.263}/{G.711, G.723, G.728}, and the other is {H.264}/{G.711}.

If T2's capabilities are combined into which of the following options, T2 will not be able to successfully hold a point-to-point conference with T1?

42. If NAT is not enabled on the private network terminal, calls from the public network terminal to the private network terminal behind the firewall will fail. Which of the following is the root cause?

43. Which of the following statements about Huawei's IdeaHub S2 series products is wrong?

44. Which of the following messages indicates that the request cannot be fulfilled on the SIP server?

45. John, an SMC system maintenance engineer, wants to start or stop an SC database running a version later than V600R019C10SPCb20. Which user should he switch to to perform database operations?

46. Which of the following is not a feature of Huawei's collaboration solution?

47. H.264 video divides images into three types of frames: l, P, and B. Among them, a frame uses inter-frame coding and b frame uses intra-frame coding. Which of the following options is correct regarding the types of a and b?

48. After lossless encoding, the bitrate of sound and images is very high. For example, if a 4CIF analog TV signal uses a 48-bit color depth, which of the following is closest to the bitrate transmission rate before compression?

49. Which of the following options is the color space used by H.264 encoded image data?

50. The SMC system administrator wants to log in to the SC remotely via SSH. Which of the following is the default port for the admin user to log in to the SC?