In case the address space of IPv4 is using up, objects in the IoT will ( ).
A. Use virtual address.
B. Share IPv4 address with existed devices.
C. Use IPv6 address.
D. Objects in IoT will not occupy any internet address.
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These descriptions of technologies are relative with short range wireless, which one is correct? ( )
A. Near-field communication enabling two electronic devices to communicate within a 4-meter range.
B. QR codes and barcodes is machine-readable optical tags that store information about the item to which they are embedded.
C. Wi-Fi Direct is the same with Wi-Fi standard but more easy to connect.
D. Radio-frequency identification use electromagnetic to read data stored in tags embedded in other items
Which description of LTE-Advance is incorrect? ( )
A. LTE-Advance is high-speed communication specification for mobile networks.
B. LTE-Advance provides enhancements to the LTE standard with extended coverage.
C. LTE-Advance provides enhancements to the LTE standard with higher throughput.
D. LTE-Advance provides enhancements to the LTE standard with higher latency.
The application of IoT may involve with some wired technologies except ( ).
A. BUS
B. Ethernet
C. MoCA
D. PLC
颗粒剂根据其溶解性能与状态不同可分为( )
A. 水溶性颗粒剂
B. 酒溶性颗粒剂
C. 混悬型颗粒剂
D. 泡腾性颗粒剂
E. 复合型颗粒剂
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