(The following figure shows a policy control matrix on a virtualized network deployed using iMaster NCE- Campus. Which of the following statements about the policy control matrix are true?Choose all that apply.)

• A.Users in Guest_Group cannot communicate with those in Research_Group.
• B.Users within Sales_Group can communicate with each other.
• C.If a user is not within Guest Group, Research Group, or Sales Group, that user cannot access any network resources.
• D.Users in Research_Group cannot communicate with those in Guest_Group.

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(Which of the following rate limiting modes are supported by the Huawei CloudCampus Solution in small- and medium-sized campus scenarios?)

• A.Radio-based rate limiting
• B.ACL-based rate limiting
• C.SSID-based rate limiting
• D.User-based rate limiting

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In the wide area network IPv6 transition scenario, which of the following technologies can achieve
"smooth interoperability between IPv4 and IPv6 services" and ensure service continuity? (Multiple choice)

• A.Dual-stack technology (the device runs both IPv4 and IPv6 protocol stacks simultaneously)
• B.NAT64 (enabling IPv6 terminals to access IPv4 resources)
• C.IPv6 over IPv4 tunnels (such as GRE tunnels, which encapsulate IPv6 packets for transmission over IPv4 networks)
• D.Without transition technology, IPv4 and IPv6 terminals cannot communicate with each other .
• E.Directly disable the IPv4 protocol and force all services to switch to IPv6.

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In the wide area network IPv6 transition scenario, if it is necessary to "allow terminals that only support IPv4 to access IPv6 network resources", which of the following technologies should be used?

• A.IPv4/IPv6 dual-stack technology
• B.IPv4 over IPv6 tunnel
• C.DNS64+NAT64
• D.NAT444 (Carrier-grade NAT)

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In the OSPF protocol for wide area networks, what is the propagation range of Type 3 LSA (Network Summary LSA)?

• A.Propagates in the region where the LSA was generated and its adjacent regions.
• B.Spreads only within the core area (Area 0)
• C.Propagate throughout the entire OSPF autonomous system (except NSSA areas)
• D.Propagates only within the region where the LSA was generated.

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