| Chapter 1 | 1C · 2A · 3D (1) The table gives Mode 5 the agent's own identity with permissions of its own, which is why the chapter calls such an agent a privileged machine insider; Modes 1 to 3 act with a person's identity. (2) AI in observability and incident assistance is observable, delegation of routine reversible classes is expected, and unattended operation of whole estates is speculation on the evidence of the sources in Chapters 6, 7 and 27. (3) The definition of done requires an explicit unset or not tested wherever the answer is missing, and the chapter warns that a record with no blanks has probably been written from the vendor's brochure. |
| Chapter 2 | 1A · 2C · 3D (1) The survey reported the 2.6 times association and no evidence of lower change fail rates, and recommended peer review supported by automation. The chapter adds that this is an association from survey responses, not an experiment. (2) Because the change type was standard, nobody reviewed the content of this change and the test-evidence field was empty; the approval belonged to the template and not to the change, which the incident INC-HM-2027-0833 made costly. (3) The side-by-side table gives reliability engineering skill for SRE, with the SLO, error budget, toil cap and blameless review as its characteristic artefacts. The other three answers belong to the sysadmin, DevOps and platform engineering. |
| Chapter 3 | 1C · 2B · 3D (1) The chapter calls this its own conclusion, argued and not measured: it follows from premises about how review and authoring scale, and is only as strong as those premises. (2) The chapter cites an average of 5 days for the 2023 sample, down from 32 days in 2021 and 2022 and 63 days in 2018 and 2019, as the most direct expression of adversary pressure on O3 Change. (3) RST-NR-2027-002 measured 5 hours 20 minutes against 2 hours, and RST-HM-2027-004 measured 5 hours 40 minutes against 4 hours; both failed and neither has been re-tested, so the claim cannot be made. |
| Chapter 4 | 1D · 2A · 3B (1) Restore-overwrite is irreversible for what is overwritten, so the table caps it at Level 1: a named person executes after a restore into a separate target has been compared. (2) A refused attempt is one of the four conditions of an autonomy error and counts once. Only a customer-visible or regulator-visible effect consumes the whole tolerance, and the observer counts the errors, not the agent. (3) The dependence test asks whether the observer can still report when the platform it watches has failed; a monitoring stack on the cluster it monitors goes silent, and silence reads as health. The other options describe the independence test, the stop test and evidence expiry. |
| Chapter 5 | 1C · 2A · 3D (1) In a 30-day window of 720 hours, 2 per cent of the budget consumed in one hour is 0.02 times 720, a burn rate of 14.4. The rate of 6 belongs to the six-hour window and 1 to the three-day ticket. (2) A deadline objective is binary per run day. With perhaps twenty run days in a month the budget allows no missed run at all, so the ratio method gives nothing to burn and another form of alert is needed. (3) The record states the promised objective and shows the evidence beside it. Because the test of 2027-10-12 failed and no re-test exists, the claim that the portal is recoverable within two hours is not made. |
| Chapter 6 | 1B · 2D · 3A (1) The third rule of a correlation policy is that stop conditions are numbers. A phrase such as reduce if quality falls is not a stop condition; thresholds on the seed catch rate can be enforced by a policy decision point the correlator cannot reach. (2) These are held-out conditions: a system tuned on its own test set passes it. The set is kept out of the tuning data and the retrieval index, and every replay is logged. (3) The record shows recall of 1.00 on 14 customer-facing episodes and zero suppressed by AI. The miss, SEED-HM-07, was in the dependency-health class, and median pages per shift fell from 31 to 19. |
| Chapter 7 | 1D · 2B · 3A (1) Acceptance of a hypothesis is held by the operations lead with the commander, with the assistant at Level 0 Advisory. Level 2 Supervised is its ceiling only for opening a candidate incident and for declaration, which a person confirms. (2) The studies differ in task, data and setting, so they give a map of difficulty and not a rate. The figure that transfers is the one measured on the organisation's own incidents, repeated when model, prompt or corpus changes. (3) The table gives the reason: a candidate is inert until confirmed in one action, so a false candidate costs little. Declaration starts roles, clocks and records and is the commander's decision. |
| Chapter 8 | 1C · 2A · 3D (1) Prune belongs to the delete action class. The sync-policy table requires a named person for stateful kinds and never Level 4 where data would be deleted, in line with the prohibition on irreversible actions on production data. (2) The first control is a named reviewer who is neither requester nor drafter. A machine reviewing a machine's change is acceptable only if independent, and the engineer who requested the draft is not independent of it. (3) The default is at most 5 open drafts; above it the agent's drafting is paused for that queue. The chapter treats this as protecting both the control and the people, since an overloaded reviewer approves more than they can check. |
| Chapter 9 | 1B · 2D · 3A (1) Code is usually protected by the longest pipeline and configuration by the shortest. In the CrowdStrike, Google and Cloudflare cases the change reached its entire population by a distribution path before anything independent had judged it. (2) The agent can reach cell 1 and no further. Widening is a decision of the pipeline controller, conditioned on a verifier whose identity and age the agent does not write, so the widening decision stays outside the agent. (3) The controller's own analysis is a fast first gate. The verdict that permits widening comes from the independent verifier, and the analysis template and thresholds are stop conditions the releaser cannot edit. |
| Chapter 10 | 1D · 2C · 3B (1) Such an action removes the means by which the other safeguards are checked. It heads the list of actions an agent may not take and is not delegated at any level. (2) Bounded remediation of narrow reversible classes is observable, widening to reconfigure, roll back and perhaps failover is expected where evidence is recorded, and unattended recovery of whole estates is speculation. (3) The engine has a cancel signal, but the rule is that an engine may enforce only a control that its operators alone can edit. The stop is backed outside the platform by revoking the credential and a deny entry. |
| Chapter 11 | 1A · 2C · 3B (1) The duty falls on the owner or operator of the data centre at or above 500 kW. An organisation that rents capacity obtains the figures from its provider; attributing energy to services is its own work. (2) Delete is irreversible except from backup, so the agent only advises and a person deletes after a quarantine period. Level 4 is never used for data that cannot be restored. (3) The standby floor ties the size of the recovery site to a restore test. Availability measures stay green while no failover is happening, so only a dated passing test at the reduced size supports the reduction. |
| Chapter 12 | 1D · 2B · 3A (1) Implemented, unverified is one of the five states and is reported as open. Implemented is a statement about the change; only a passed re-test with evidence and a signature says something about the condition. (2) A timeline may be drafted at Level 1 Assisted with evidence links and kinds. AI may not fill gaps, assign the cause or close an action: a gap is a finding, the review is a diagnosis people own, and a named person signs closure. (3) When an agent was part of the incident and the same platform drafts the account, the account is not independent. The group keeps the log out of the agent's reach and has a person verify every entry about it. |
| Chapter 13 | 1C · 2D · 3A (1) A moving alias is an unrecorded change, while a snapshot is a claim that can be checked. Pinning makes a change of model the organisation's own act with a record. (2) Each retrain is a change request in ServiceFlow with the Region's evaluation set, a shadow period and a decision by the Head of Benefits Unit and the platform lead, with date-order ranking as the manual fallback. (3) A model that grades its own outputs, or a sibling's, shares blind spots with it. The grader, the sentinel set and the data path of the objective are kept independent of what they measure. |
| Chapter 14 | 1B · 2A · 3D (1) The stop question precedes diagnosis for class B because diagnosing a running agent means diagnosing a system that is still acting. The record keeps the identity, action, mandate manifest and stop time. (2) Article 26(5) has the deployer inform the provider first, immediately for a serious incident. The serious-incident report to the authority under Article 73 sits with the provider; the other options belong to NIS 2 and the GDPR. (3) The chapter comments that the stop was held at the Region's own gateway and not inside the provider's application, which is the small team's strength: a stop path outside the system it stops. |
| Chapter 15 | 1B · 2A · 3C (1) With on-demand capacity nothing is fixed but the price per token; the bill and the granted quota vary, so the first failure is a refusal at a peak. The evidence to ask for is the quota in the contract and a test of the limit. (2) A cascade saves cost only when the cheap stage answers, so its risk is wrong answers that are accepted without escalation. The evidence required is the escalation rate, the pass rate and a review of accepted answers. (3) A spending limit is a control and must not depend on the agent's compliance. The gateway enforces the caps, and revoking the credential at the gateway's identity service stops the agent from outside. |
| Chapter 16 | 1D · 2B · 3A (1) The runner never writes or edits runbooks, widens its own scope or verifies its own result. Verification belongs to something independent of the actor, which is the observer principle applied to the team. (2) The chapter permits this one reconfiguration at Level 3 because it is narrow and reversible: the old certificate remains valid and can be reinstalled. The ceiling follows reversibility, as Chapter 4 requires. (3) The chapter calls this the most important distinction: a skill is instruction and never authority. Authority and its limits come from the mandate manifest that a policy decision point outside the agent enforces. |
| Chapter 17 | 1C · 2A · 3D (1) The validator evaluated the template on the same expectation as the code it tested, so the check shared its failure mode with the thing checked: a failure of test 1, independence of verification. (2) The agent's own check said the restart had worked while a probe the agent could not alter said otherwise. AIDR-0960 then kept restart at Level 3 Bounded only on condition of the observer manifest OBS-HM-0001. (3) At Level 3 the stop needs no approval, runs outside the control plane and is drilled each quarter within its target. A stop that depends on the system under stress is a stop in name. |
| Chapter 18 | 1B · 2D · 3A (1) The inheritance rule closes the route in which outside text gains authority by being summarised. A ticket body is WC-3, so its summary informs and carries no authority for an action above notify. (2) The route must work when the identity provider or platform is down, needs two named people, is time-boxed and recorded, and is exercised. Agents never hold it or request it, and a route never used is a claim without evidence. (3) The route is local to the management plane, without federation to the identity provider, and the test gave 9 minutes against 15. The result is valid until 2029-05-07 or a change in the management plane, so the evidence has an age. |
| Chapter 19 | 1D · 2B · 3A (1) A passing test stops counting when its clock ends. The 180-day default clock ended on 2028-04-02 with no re-test, so the status is expired and the claim does not count as recoverable. (2) The test proves that data can be recovered within the RPO and the service starts on it. It leaves unproven that the production target at production scale and concurrency can be restored over. (3) AI plans, executes bounded steps under a mandate in a segregated environment, analyses and maintains records. It does not attest, failover and restore-overwrite in production stay at Level 1, and status is derived by rule. |
| Chapter 20 | 1C · 2A · 3D (1) The mean moved by 9 minutes, and the committee later saw that the report had not mentioned the outage. AIDR-0921 replaced the mean with the median, the 90th percentile and a named list beyond the RTO. (2) An outage from a storage controller, an expired certificate or a provider's DNS is outside failed deployment recovery time, and changes made outside the pipeline are not counted. The metrics come from the research programme, not from the Regulation. (3) Rates need denominators large enough to bear them. The gaming-check table says to report counts under 100 deployments a quarter, and the Region reports 62 deployments and three failures as counts. |
| Chapter 21 | 1B · 2C · 3A (1) A managed provider answers the scarcity of night, weekend and specialist cover and trades visibility and control. Its strain is that the provider's AI acts under its own rules and exit is hard; the other strains belong to SRE, follow-the-sun and embedded teams. (2) The agent owner holds the mandate of the agent, its identity and credentials, its evaluation and its budget, and cannot delegate the mandate and the stop. The other answers belong to the objective, service and runbook owners. (3) The operating model gives the first answer: per service and per window, with a cap at Level 2 wherever fewer than two evidenced conductors hold the window, and the provider's AI brought under the six terms before its scope widens. |
| Chapter 22 | 1D · 2A · 3C (1) For an expired or implemented but unverified claim the commander decides with the status stated and concurrence from the head of SRE or deputy, recorded with a time-boxed acceptance that ends with the incident. (2) Breaking a freeze is held by the commander and the head of SRE with a recorded exception. AI only reads and flags the conflict at Level 0 Advisory, in line with the Level 4 prohibition on acting inside a freeze. (3) An emergency change is declared by a person and approved by the commander, and the requester does not approve. An agent may draft the change at Level 2 but never chooses emergency or approves it. |
| Chapter 23 | 1B · 2D · 3A (1) The instruments do not set levels of autonomy for operations actions, with the exceptions of AI Act Article 14 and GDPR Article 22. The budget is the book's design for showing the outcomes the instruments ask for. (2) Point (f) asks for policies and procedures to assess the effectiveness of the measures. A restore-test record is that assessment for point (c), which is the thesis that resilience is a claim needing evidence. (3) The staff-rights table cites AI Act Annex III point 4(b) with Article 26(7) and GDPR Article 22 for this measure. Hansa Mutual keeps it at Level 0 or 1 with agreement first, and Nordvik Region with negotiation first. |
| Chapter 24 | 1C · 2B · 3D (1) The Google Cloud and Cloudflare cases of 2025 were global changes that reached every region. For that class a second provider as a tested recovery target helps, provided it is not behind the same dependency. (2) The two regimes compose: DORA requires a tested exit plan and the Data Act supplies switching mechanics. Neither makes the exit work; the test with a date, a result and an expiry is the evidence. (3) The table anchors this in the Level 4 prohibitions of Chapter 4: an action that disables the observation or the stop path is never delegated. The customer holds credential revocation and shows it works with a timed drill. |
| Chapter 25 | 1B · 2D · 3A (1) The noise budget is a property of a rota and a service, reported for the team. A breach is a finding on the alert rules and the correlation policy, which is the chapter's claim that load is a design property. (2) The table of usage modes marks the effect on load as direction not measured. The chapter says the question is open and that the design of the charter, team by team, decides which way it goes. (3) The chapter reads a response-time target as a working-time parameter: the constraints on stand-by, including response time and frequency of call-outs, are factors in the Court's test, so the question is live and goes to counsel. |
| Chapter 26 | 1C · 2A · 3D (1) The run is by an evidenced holder and not by the author, because an author knows what the manual form leaves out. The agent is switched off and every missing step is recorded as a change. (2) The consequence falls on the delegation, not on a person: ROLE-HM-OPS-001 requires two evidenced holders per window, and a window that fails the rule drops the Level 3 classes of HM-OPS-001 to Level 2. (3) Decay of unaided performance is observable in other domains and expected in the cognitive part of manual recovery; a thinning entry route is expected where organisations let it; wholesale loss of the craft is speculation. None of the studies measured operators. |
| Chapter 27 | 1B · 2A · 3C (1) Agent products and rising change volume are observable, and widening of Level 3 on evidence is expected. A provider-run loop with no customer-side observer for a critical function is plausible but unsupported by present evidence. (2) The table of futures gives Future B a customer-owned probe together with the provider's evidence. Agents of one family verifying each other belongs to Future C, the unattended estate. (3) The verdict separates the questions: a named person answering for each Tier 1 service is expected, the form the role takes is speculation, and whether the organisation can still operate by hand is decided now. |
| Chapter 28 | 1C · 2A · 3D (1) The recovery cases failed at a client version, a scale and a location: dimensions the claims never named. The first two options describe the provider outages and the change cases. (2) Anti-pattern 6 breaks O1 Observe when the alarm path shares the platform or nobody reads its messages. The control is a heartbeat received outside the platform and a rule that silence raises an alarm. (3) The validator and the sensor code both assumed the same number of inputs, so the check shared its failure mode with what it checked. The other options describe GitLab, Meta and Google Cloud. |
| Chapter 29 | 1B · 2D · 3A (1) The table of delegation shows every class unchanged. The chapter counts this as a result: the three kinds of evidence a raise needs were assembled for the first time and were not satisfied together. (2) RST-NR-2029-002 failed again in April and RST-NR-2029-003 passed in June, both with the provider's participation. The Region ended the year with a verified portal failover it had been unable to claim for 20 months. (3) The seeded silent failure kept the health endpoint reporting ready, and the agent verified its restart by reading that endpoint under its own identity. OBS-HM-0001 then made the independent probe the condition for keeping restart at Level 3. |
| Chapter 30 | 1C · 2A · 3D (1) The answer to AIDR-0900 says that what the Region can prove about recovery is, today, nothing at Tier 1. The indicator baseline is 0 of 4 verified, and no sentence about recovery goes into a board paper that the register does not support. (2) The conditional answer sets the trigger of trend T05: four quarters of catch rate at 0.90 from OBS-HM-0001, the stop drill inside its 5-minute target and a budget not exhausted, so the decision cannot be taken before the review after 2029-09-30. (3) D4 is to hold providers to operational terms: notice of change, visibility of the provider's AI, a right to test and a stop. The board sets the rule that a level rises only on evidence and does not approve each level. |
| Chapter 31 | 1B · 2D · 3A (1) Matching delegation to reversibility is observable in practice and in the cases. No source reports an organisation that counted autonomy errors against a budget, so the budget remains a design proposed by the book. (2) The observable core of part 4 is the shared-fate failures in the public reports. Its open edge is the speculation that a second model as verifier would suffice, which the evidence on correlated model errors does not support. (3) Each action answers one part: the loop on a page for part 1, ceilings and the stop for part 2, identities for part 3, the verification of the last automatic repair for part 4, and the oldest recoverable claim with a manual drill for part 5. |