Every question of this course

Q1.1 What does 3GPP's founding study say powers an Ambient IoT device?

• A very small rechargeable battery
• Energy harvesting, with either no battery or a capacitor
• A power cable shared with the sensor it sits on

The study defines it as an IoT service with a device powered by energy harvesting, being either battery-less or with limited energy storage capability, using a capacitor. what an Ambient IoT device is, in the founding study

Q1.2 Which three gaps did the founding study say existing technologies did not cover?

• Extreme conditions, millimetre-thin maintenance-free devices, and places where a normal battery cannot be used
• Latency, positioning accuracy and battery life
• Cost, coverage and roaming

Those are the three numbered cases in section 3 of the work item description, word for word. the gap the founding study named

Q1.3 What peak power figure does the radio solutions study name for the smaller of its two device targets?

• About 1 watt
• About 1 microwatt
• About 1 milliwatt

The scope of TR 38.769 names roughly 1 microwatt peak power consumption with energy storage as the first of the two devices it set out to enable. the scope of the RAN solutions study report

Q1.4 What does the architecture specification say the Ambient IoT system is, in this release?

• A public network feature available to any subscriber
• An isolated private network that does not interact with a public network
• A roaming-only service between two operators

The scope of TS 23.369 says the AIoT system is defined as an isolated private network, such as SNPN, that does not interact with a public network. the scope of the architecture specification

Q1.5 What is the earliest date on any Ambient IoT document in this record?

• 2024-01-11
• 2019-03-07
• 2022-04-29

The earliest upload date over every Ambient IoT document in the data is 29 April 2022, soon after the founding study started. the first Ambient IoT document was filed 2022-04-29

Q2.1 What does a work item short name starting `FS_` tell you?

• It is a frozen specification
• It is a fast-track item
• It is a feasibility study, which writes a report and no binding text

FS_ marks a feasibility study. Ten of the area's 37 items carry it. 10 of them are studies

Q2.2 How many work items and study items does the register hold for this area?

• 37
• 53
• 24

Thirty-seven, of which ten are studies. The 24 in the acronym table are the ones with their own line; the other 13 are umbrella rows and sibling parts. 37 Ambient IoT work items and study items

Q2.3 What is the difference between a CR and a pCR?

• A CR is approved, a pCR is rejected
• A CR comes from a company, a pCR from a working group
• A CR edits a published specification, a pCR edits a report still being written

A change request edits published binding text; a pCR is the same kind of edit aimed at a draft report. The area filed 1538 of the first kind. 1538 Ambient IoT documents of type CR

Q2.4 Which kind of document is the most common in this area?

• Change requests
• Letters between groups
• Discussion papers

3973 discussion papers, ahead of 3620 pCRs and 1538 CRs. Arguing costs more paper than editing. 3973 Ambient IoT documents of type discussion

Q2.5 Why is a RAN work item often split into a "Core" part and a "Perf" part?

• One carries the mechanism, the other the radio performance requirements, and they finish at different times
• One is Rel-19 and the other Rel-20
• One is for the device and one for the network

The core part under RAN1 finished 2025-09-09; the performance part under RAN4 finished 2026-03-03. Same parent, different groups, different dates. Ambient_IoT_Solutions-Perf

Q3.1 How many groups have actually filed an Ambient IoT document?

• 17
• 37
• 16

Sixteen groups filed documents. The register holds seventeen entries, because CT6 leads a work item and has filed nothing. 16 groups filed Ambient IoT documents

Q3.2 Which group filed the most Ambient IoT documents?

• RAN1, the physical layer group
• SA3, the security group
• SA2, the architecture group

RAN1 filed 2421, ahead of SA2's 2125 and SA3's 1349. RAN1

Q3.3 Which group sent by far the most letters to other groups?

• RAN1, with 36
• CT4, with 25
• SA2, with 139

SA2 sent 139 of the area's 351 letters. The next two, SA3 and RAN2, sent 38 each. SA2

Q3.4 What is odd about CT6 in this record?

• It filed documents but leads nothing
• It leads a work item and has filed no document at all
• It is not a real 3GPP group

CT6 leads the CT6 part of the phase 2 protocol work and has zero documents, zero meetings and no owned specification in this data. CT6

Q3.5 Which group arrived last, and when?

• SA6, on 2025-08-17
• CT1, on 2025-04-24
• RAN5, on 2026-01-30

RAN5, the conformance testing group, filed its first Ambient IoT document on 30 January 2026 — testing comes after there is something to test. RAN5

Q3.6 Which group stopped filing first?

• SA5, whose last document is from 2026-07-01
• SA1, whose last document is from 2025-05-09
• RAN3, whose last document is from 2026-07-30

SA1 writes requirements. Once the requirements were written its work was done, and it has filed nothing since May 2025. SA1

Q4.1 Which single item carries more documents than any other in this area?

• The CT protocol work
• The SA2 architecture study
• The RAN solutions study, `FS_Ambient_IoT_solutions`

2357 documents against one study item. The radio question took more paper than anything else in the area. FS_Ambient_IoT_solutions

Q4.2 What does the solutions study's scope say the first device does with its answer?

• It generates its own carrier and transmits
• It backscatters on a carrier wave provided externally
• It stores the answer until a reader collects it by contact

The scope of TR 38.769 says the device's transmission back to the network is backscattered on a carrier wave provided externally, and that this device amplifies in neither direction. the scope of the RAN solutions study report

Q4.3 Which specification is RAN1's own new one for this work?

• TS 38.300, the overall NR description
• TS 38.291, the Ambient IoT physical layer
• TS 38.391, the Ambient IoT medium access control protocol

TS 38.291 is the physical layer and is owned by RAN1. TS 38.391 and TS 38.300 belong to RAN2. TS 38.291

Q4.4 Why must you never quote the outdoor active-device study's start date?

• It is confidential
• It reads 2019-03-07, which is a leftover from a template and predates the subject
• The study was cancelled and restarted

The work plan row carries 2019-03-07, years before Ambient IoT existed as a subject. Its finish date, 2026-03-03, is real. FS_Ambient_IoT_Outdoor_Active

Q4.5 What does the phase 2 RAN work item say about 6G?

• That Ambient IoT will be folded into 6G
• That the features of 6G relevant to IoT are excluded from its scope
• Nothing at all

The scope clause excludes them, and that single clause is everything the register carries on the subject — not enough to build a sentence on. what the phase 2 RAN work set out to do

Q5.1 Which group owns the new Ambient IoT medium access control protocol?

• RAN3
• RAN1
• RAN2

TS 38.391 is owned by RAN2, along with TS 38.300, the overall description of the NR radio network. TS 38.391

Q5.2 RAN3 leads no Ambient IoT work item. What does it do instead?

• Nothing — it only receives letters
• It owns five of the affected specifications and edits them, 805 documents' worth
• It reviews the other groups' work before the plenary

RAN3 leads no item but owns TS 38.401, TS 38.410, TS 38.412, TS 38.413 and TS 38.423, and filed 805 documents against them. RAN3

Q5.3 Which existing specification took the most Ambient IoT change requests of any in the radio area?

• TS 38.300, the overall NR description, with 58
• TS 38.401, how the radio network is built, with 9
• TS 38.413, the protocol between the radio network and the core, with 77

77 change requests against TS 38.413. Letting a new kind of device in means teaching the radio-to-core protocol about it. TS 38.413

Q5.4 What are TS 38.191 and TS 38.194 for?

• Stage 1 requirements and stage 2 architecture
• Charging and management
• The device's radio, and the base station and carrier-wave node's radio

TS 38.191 covers what the device must transmit and receive, TS 38.194 the same for the base station and the carrier-wave node. Both are RAN4's. TS 38.194

Q5.5 RAN5's two conformance specifications, TS 38.591-1 and TS 38.591-2, carry how many change requests between them?

• 28
• 150
• None at all

TS 38.591-1 and TS 38.591-2 show zero change requests each. They are still being written, not yet being corrected. TS 38.591-1

Q6.1 What is TS 22.369?

• The architecture of the Ambient IoT system
• The service requirements for Ambient power-enabled IoT
• The signalling a device exchanges with the network

TS 22.369 is SA1's new specification of service requirements — what the system must do, before anybody says how. TS 22.369

Q6.2 Which existing specification did SA1's normative work declare it would change?

• TS 22.261, the service requirements of the whole 5G system
• TS 23.501, the architecture of the 5G system
• TS 38.300, the overall NR description

The work item description names 22.261 as impacted, and 9 Ambient IoT change requests were filed against it. TS 22.261

Q6.3 Why has SA1 filed no Ambient IoT document since May 2025?

• It was merged into SA2
• Its work was suspended
• Requirements are written once, and its two items are both complete

SA1's study and its normative work both stand at 100 per cent, and its last document is dated 2025-05-09. A requirements group leaves when the requirements are written. SA1

Q6.4 How many documents were filed against SA1's study report, TR 22.840?

• 18
• 497
• 1379

497 against the report itself. The 1379 figure belongs to the short name `FS_AmbientIoT`, which two different study items share. TR 22.840

Q6.5 What can this school not tell you about TS 22.369?

• How many change requests it has taken
• Which group owns it
• What its own scope clause says

The parsed copy on this machine starts at clause 2, so the requirements specification cannot be quoted from its own scope. TS 22.369

Q7.1 Which specification did SA2's Ambient IoT work create from nothing?

• TS 23.369
• TS 23.502
• TS 23.501

TS 23.369, architecture support for Ambient power-enabled IoT, stage 2. TS 23.501 and TS 23.502 already existed and were amended. TS 23.369

Q7.2 How many Ambient IoT change requests has TS 23.369 taken?

• 14
• 150
• 524

524, out of 816 documents. It is the busiest specification in the whole area by a wide margin. TS 23.369

Q7.3 What does the phase 1 architecture work item say it focuses on?

• Device 1 in Topology 1
• Outdoor scenarios only
• Every device type in every topology

The work item description says it specifies architecture support as per the conclusions in TR 23.700-13 clause 8, focusing on Device 1 in Topology 1. what the architecture normative work set out to do

Q7.4 What does the phase 2 architecture study set out to widen?

• The number of supported operators
• Support for AIoT services in Topology 2
• The frequency bands

Work task one of the study is to study the support of AIoT services in Topology 2. what the phase 2 architecture study set out to do

Q7.5 SA2 sent 139 letters to other groups. What was the next highest?

• 38, sent by SA3 and by RAN2
• 77, sent by RAN3
• 100, sent by CT4

SA3 and RAN2 sent 38 each, the next highest after SA2's 139. 351 Ambient IoT documents of type LS out

Q8.1 What does SA3's study say it set out to identify?

• Potential threats and security requirements for AIoT services
• The best encryption algorithm for tags
• How much power a signature costs

The objectives are to identify potential threats and security requirements, and to study mechanisms given the energy and complexity constraints of the devices. what the security study set out to do

Q8.2 What is TS 33.369 about, by its own title?

• Security of Ambient IoT services for isolated private networks
• Security of the whole 5G system
• Charging for Ambient IoT

The catalogue title is "Security aspects of Ambient Internet of Things (AIoT) services for isolated private networks" — which matches the architecture scope's isolated private network boundary. TS 33.369

Q8.3 SA3's Rel-19 normative work stands at 95 per cent against a target finish that has passed. What does that mean?

• The work is 95 per cent finished today
• The work plan row says 95 per cent as of its last edit, and nothing more
• The work failed

A completion figure is as fresh as its last edit. It records a target's progress at the moment somebody typed it, not an outcome and not today's state. AmbientIoT-SEC

Q8.4 Which two reports hold SA3's thinking?

• TR 23.700-13 and TR 23.700-30
• TR 38.848 and TR 38.769
• TR 33.713 for phase 1 and TR 33.714 for phase 2

TR 33.713 carries 708 documents on phase 1 security, TR 33.714 carries 216 on phase 2. TR 33.713

Q8.5 The phase 2 security work item names TS 33.340 as impacted. What can this course say about that document?

• Only that it is named — the specification catalogue on this machine holds no title, group or status for it
• That it does not exist
• What it is for and who owns it

Two declared specifications, TS 29.568 and TS 33.340, are absent from the catalogue here. Never state what they are for. 33.340

Q9.1 How many separate work items share the short name `AmbientIoT-CT`?

• One
• Two
• Four, one each for CT1, CT3, CT4 and an umbrella row

Four rows carry the name, and every one of them shows the same 959 documents. Adding them gives a number four times too large. AmbientIoT-CT

Q9.2 What is TS 24.369?

• The Ambient IoT data management service
• The Ambient IoT signalling protocol between device and network, stage 3
• The Ambient IoT architecture

Its catalogue title is "Ambient IoT Non-Access-Stratum (AIoT NAS) protocol for 5G System (5GS); Stage 3" and it is owned by CT1. TS 24.369

Q9.3 Which group owns the most affected specifications in this area?

• SA5, with seven
• SA2, with five
• CT4, with nine

CT4 owns nine, ahead of SA5's seven. Most of them are existing core network service specifications that had to be amended. CT4

Q9.4 The CT work item description says stage 3 work may start only when what is true?

• The radio work is complete
• The plenary has approved a test plan
• The applicable normative stage 2 work is available

The objective's second sentence says stage 3 work shall be started only after the applicable normative stage 2 work is available. That sentence sets the order of the whole area. what the protocol work set out to do

Q9.5 What did CT3's phase 2 application work item declare as impacted?

• TS 29.568, a number the catalogue on this machine holds no title for
• TS 24.501
• TS 29.522

CP-261295 opened that work and named 29.568. The catalogue here has no title, group or status for it, so this course says nothing about what it is. 29.568

Q10.1 What are the three work items SA5 leads?

• Charging, management, and a phase 2 charging study
• Security, charging, and testing
• Architecture, management, and requirements

AmbientIoT-CH for charging, AmbientIoT_Ph2-OAM for management, and FS_AmbientIoT_Ph2_CH, the phase 2 charging study. SA5

Q10.2 SA5 filed only 36 documents. How many specifications does it own in this area?

• Three
• Seven
• One

Seven — the second most of any group, after CT4's nine. Few documents, many documents touched. SA5

Q10.3 Why can this course not quote an objective for the phase 2 management work?

• It has not been approved yet
• It is confidential
• Its work item description jumps from section 3 to section 5, so there is no objective section

The document has no section 4. There is nothing to quote, and inventing one would be the exact mistake this school avoids. AmbientIoT_Ph2-OAM

Q10.4 What is TS 23.370?

• The Ambient IoT charging service
• The Ambient IoT architecture
• Application enablement for Ambient IoT services

SA6's new specification, the application layer that sits on top of the service. 70 documents and no change requests yet. TS 23.370

Q10.5 What does SA6's phase 2 study say it builds on?

• The requirements from SA1 and the architecture and functions from SA2 of Rel-19
• The RAN solutions study alone
• Nothing — it starts from scratch

The study description says exactly that. It is why SA6 arrives late — it needs both earlier layers to exist first. what the application enablement study set out to do

Q11.1 How does a specification get into this register?

• It is owned by one of the seventeen groups
• Somebody mentions it once
• A work item description declares it impacted, or at least ten Ambient IoT documents name it

Those are the two tests. Fifty-three specifications pass one or the other. 53 specifications are touched by Ambient IoT

Q11.2 How many specifications exist only because of this area of work?

• Fifteen
• Fifty-three
• Eight

Fifteen carry Ambient IoT in their catalogue title and were written for this work. Eight more are study reports; the rest already existed. 53 specifications are touched by Ambient IoT

Q11.3 Which report carries the most documents?

• TR 33.713, the phase 1 security study, with 708
• TR 22.840, the founding study, with 497
• TR 23.700-13, the phase 1 architecture study, with 746

746 against the architecture study, just ahead of the security study's 708. TR 23.700-13

Q11.4 What happens to a technical report after it is published?

• It is published once and closed; the thinking stays, nobody has to obey it
• It is deleted
• It becomes binding text

A report records a study. TR 22.840, TR 38.848 and the rest are where the reasoning lives, and none of them binds a product. TR 22.840

Q11.5 Two declared specifications carry no title in the catalogue on this machine. Which?

• TS 29.568 and TS 33.340
• TS 23.434 and TS 23.436
• TS 29.503 and TS 29.505

Both are named as impacted by phase 2 work item descriptions, and the catalogue here holds no title, group or status for either. 29.568

Q12.1 How many of the 37 work items stand at 100 per cent?

• 19
• 24
• 37

Nineteen. The figure comes from the completion field of each item's row in the 3GPP Work Plan. 19 of the 37 work items stand at 100%

Q12.2 A work item shows 20 per cent complete. What does that tell you?

• One fifth of the work is done today
• The row said 20 per cent when somebody last edited it, and nothing about since
• The work is behind schedule

A completion figure is as fresh as its last edit. The row records when it was modified; it does not record whether anything has moved since. AmbientIoT_Ph2-OAM

Q12.3 The umbrella item `Ambient_IoT_Solutions` stands at 80 per cent while both its parts stand at 100. Which is right?

• The data does not say
• The umbrella
• The parts

Core and performance both read 100, the parent reads 80, and nothing in the data settles the disagreement. Ambient_IoT_Solutions

Q12.4 Which year carries the most Ambient IoT documents?

• 2025, with 4457
• 2026, with 2090
• 2024, with 3384

4457 in 2025. 2026 is a part year — the newest document in the data is from 30 July 2026. 4457 Ambient IoT documents filed in 2025

Q12.5 Which piece of Rel-19 work is clearly still running?

• The charging work
• The architecture work
• Conformance testing, at 37 per cent against a target of 2026-12-11

RAN5's conformance testing started 2025-12-12 and is about a third done. Everything else in Rel-19 reads 95 or 100. Ambient_IoT_Solutions_plus_CT1_SA3-ConTest

Q12.6 Can this course say whether Rel-20 phase 2 is finished?

• Yes, it has failed
• No — the finish dates are targets in the work plan, not recorded outcomes
• Yes, it is finished

Eleven phase 2 items sit between 0 and 70 per cent, and nothing in the data records an outcome. Neither claim may be made. AmbientIoT_Ph2-ARC

Q13.1 What do you type into a 3GPP document search to find the radio solutions study's papers?

• `FS_Ambient_IoT_solutions`, the work item acronym
• TR 38.769
• Ambient IoT

Documents are filed against a work item acronym, not against a subject. The acronym is the search key; the report number finds far less. FS_Ambient_IoT_solutions

Q13.2 Which single document opened the whole area?

• SP-250377, at plenary SP-107
• SP-220085, at plenary SP-95-e
• RP-232404, at plenary RP-101

A new study item description from SA WG1, approved March 2022. Everything in this course is downstream of it. SP-220085

Q13.3 Where do you find a working group's own documents?

• In that group's document folder on 3gpp.org, whose address the register carries
• They are not published
• Only through the 3GPP portal search

Every group entry in the register carries the address of its folder, plus its first and last Ambient IoT meeting. SA2

Q13.4 If you want the reasoning rather than the settlement, which kind of document do you open?

• The TS
• The TR
• The CR

A report records the study. TR 38.769 for the radio, TR 33.713 for security, TR 23.700-13 for architecture. TR 38.769

Q13.5 Why is searching for the acronym `AmbientIoT-CT` not the same as searching for one work item?

• Because CT work is not published
• Because four work items share that name
• Because it is spelled differently in different files

CT1, CT3, CT4 and an umbrella row all carry it, and a search returns all of their documents together — 959 of them. AmbientIoT-CT

Q14.1 Does the data say why a group decided something?

• Yes, the minutes are held
• No — it holds an outcome word and nothing about the reasoning
• Only for plenary decisions

Approved, agreed, revised, noted, merged, withdrawn. That is the whole of it. No attendance, no votes, no debate. SP-220085

Q14.2 Does this data say whether anybody has built an Ambient IoT device?

• Yes, there is a product list
• No — the data is 3GPP's own paperwork and stops at the specification
• Only for trial deployments

Nothing here says whether a device has been built, sold, or run in a network. No products, no chips, no market. 10771 Ambient IoT documents

Q14.3 Four letters between groups are named in this course. What do we know about their contents?

• Only the number, title, sender and meeting — the text is not held here
• A summary written by the sender
• The full text of each

The register carries the number, the title, the sender, the meeting and the address. What any of them said is not on this machine. S2-2605244

Q14.4 What should you do with an abbreviation this course has not explained?

• Ignore it
• Assume the obvious meaning
• Take it from a specification's own text, not from this school

The register carries names exactly as written. Where a definition is needed it has to come from the document that defines it. what the phase 2 security study set out to do

Q14.5 Why does every count on this site say what it counts?

• Because 3GPP requires it
• To fill space
• Because a number whose origin nobody can restate is a number nobody should trust

Each count entry in the register carries the exact question that produced it and the day it was asked. 53 specifications are touched by Ambient IoT