The final test

E1 What powers an Ambient IoT device?

• A cable from the reader
• A coin cell that is replaced once a year
• Energy harvested from radio waves, light, movement or heat

E2 Which part terminates the signalling with the tag, picks the base station and the readers, and allocates the identifier that ties one request together?

• The AMF
• The NEF
• The AIOTF

E3 What has the network done by the time the application is told its inventory request was accepted?

• Read the first tag
• Nothing over the air — no tag has been touched yet
• Counted every tag in the area

E4 Which of these must a conforming Ambient IoT deployment always do?

• Encrypt every command
• Check the integrity of every command
• Give every device a temporary identifier

E5 What does the cheapest kind of tag do instead of transmitting?

• It reflects a plain tone another node is already sending
• It waits for a satellite pass
• It stores its answer until a reader is plugged into it

E6 Where does the architecture document put a tag's credentials?

• In the ADM
• In the AIOTF
• In the base station serving the tag

E7 How does one tag win the right to send its report?

• The network hands it a slot in advance
• It sends whenever it has power and repeats until something answers
• It picks a slot at random, makes up a number, and hears that number echoed back

E8 During an inventory, what proves to the device who is paging it?

• A signature the network puts in the paging message
• A certificate the credential store holds for the reader
• Nothing — it answers whoever paged it

E9 Clause 4.3 of TS 22.369 names four jobs. Which one is sending a tag a command so that something happens?

• Asset tracking
• Actuator control
• Inventory

E10 How does application data reach an Ambient IoT tag?

• In a PDU session with its own quality settings
• Inside signalling messages, sitting on top of AIoT NAS
• Over an IP connection opened straight to the device