The AR502E gateway only supports Zigbe and RF cashless communication interfaces, and does not support RS485 and Ethernet interfaces.

• A.False
• B.True

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In the following options, there are ()ways to reduce the threat of DDOS attacks. (Multiple choice)

• A.Interrupt strict authentication
• B.Break strict encryption
• C.Interrupt the use of tamper-evident housings
• D.Add firewall

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0eanConnect supports Developer Portal, but does not support Operator Portal.

• A.False
• B.True

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Among the following options, the process initiated by the loT device has ()? (Multiple choice)

• A.Business issuance process
• B.Control the message delivery process
• C.Southbound Registration Process
• D.Southbound message escalation process

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LiteOS open API interface does not have the following () functions?

• A.Friendly interface design
• B.is compatible with Linux
• C.Shield the bottom layer difference
• D.Easy to understand the kernel

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