01. A haulage operator tracks vehicles across rural routes and tunnels where the cellular backhaul drops for minutes at a time. Units buffer positions locally and flush them when coverage returns. The analytics team must reconstruct each journey as it was driven.
Which property of the telematics feed most directly protects that reconstruction?
a) The unit discards any position it could not transmit within the reporting interval, and later fixes then arrive in order
b) The collector stamps each record with the time it arrived, and the reconstruction reads records in the order they were written
c) The collector fills each gap by interpolating between the last position before it and the first after it, because a continuous track is expected
d) Each position carries the time it was observed on the vehicle, and the reconstruction orders on that value
02. Wind farm operators need to judge whether gearbox oil temperature on one turbine has been climbing across the shift, so they can raise a maintenance call before the alarm threshold is reached.
Which display serves that question best?
a) A line chart of the temperature across the shift
b) A bar chart ranking turbines by present temperature
c) A gauge showing the reading against its alarm limit
d) A numeric tile showing the most recent reading
03. A waste-water pumping network has an integration runbook written at handover and never revised since. Two of its five recovery procedures still name an API endpoint that was replaced a year ago. An on-call engineer follows one of them during an overflow event and the call fails.
What does this show about the documentation practice?
a) The runbook should be replaced by comments in the source, which cannot drift
b) Documents have a lifecycle, and a change is not finished until the affected pages are revised with it
c) The runbook remains fit for purpose, and the two stale procedures can wait for the next audit
d) The fault lies with version control, which should have refused the change without a documentation update
04. Halfway through delivery of an airport apron lighting integration, the client asks for photocell status to be added as a further feed. It is not in the agreed statement of work. The integration lead replies that the team runs a change process, so the request will go on the backlog.
Which distinction has the lead passed over?
a) Change management applies from handover onwards, so during delivery the backlog is the correct home
b) The request is a defect, since the original feed list should have included photocell status
c) The request enlarges what is delivered, so it needs scope re-agreement on cost and schedule before it is queued
d) Nothing is passed over, as a change process exists so that new work can be absorbed without renegotiation
05. A supermarket chain runs one dashboard for two audiences: an energy manager reading monthly cost per store, and the on-call integration engineer. An ingest stall in one region went unnoticed for four days because every tile continued to render plausible figures from the rows already loaded.
Which correction addresses what the engineer actually needs?
a) Alert the engineer when the monthly cost figure departs from its trend
b) Give the engineer a separate view of feed freshness and coverage
c) Shorten the reporting period to daily so a stall shows up sooner
d) Add an ingest row count as a further tile on the monthly report
06. In a glasshouse estate, the operations dashboard restarts nightly and shows blank tiles for every vent controller until that controller next publishes, which can be several minutes. Separately, operators cannot distinguish a controller that has gone silent from one that is reporting no vent movement.
Which two publisher-side design choices address these two problems?
(Select the two best answers.)
a) Register a last-will message the broker publishes if the client drops unexpectedly
b) Raise the publish rate so a restarted consumer waits less time for a fresh value
c) Publish each state value as a retained message on its topic
d) Subscribe with a wildcard at the top of the tree so no state topic is missed
07. A toll-road gantry platform exposes an API to a roadside maintenance partner. Using one signed token the partner reads the vehicle-pass endpoints without difficulty, while every call to the barrier-override endpoint is answered with 403.
What does this pattern indicate?
a) The token has expired and the partner needs to obtain a fresh one
b) A per-endpoint rate limit has been reached by the partner integration
c) The signature could not be verified, so the identity claim was rejected
d) The caller is identified, but the token scope omits that endpoint
08. During review of a glasshouse ingest repository, an engineer finds an API key written directly into a script. The log shows the line was pushed to the shared remote three weeks ago and has been cloned by four colleagues since. A developer deletes the line and commits the fix.
What is the correct assessment once that fix is committed?
a) The key must be treated as disclosed and rotated, because every existing clone still holds the commit that carried it
b) Rewriting the branch history and force-pushing it restores the secrecy of the key
c) No action is needed while the remote stays private, so rotation can wait for the next scheduled credential cycle
d) The exposure ended with the fix commit, and the remote now matches it, but the key must stay in configuration
09. A cold-chain logistics programme records this line during elicitation: each night, the temperature readings held in the three depot systems must be pulled, converted from the mix of scales those systems use into one scale, and written into the reporting store.
Which requirement class does this line belong to?
a) A business requirement, because the driver behind it is the food-safety regulator
b) An ETL requirement, because it states how data moves between the systems
c) A data requirement, because it fixes the volume the reporting store has to hold
d) An operational requirement, because it defines a nightly job the support team must watch
10. A rail depot review finds a service account token written into a configuration file that has been committed to the integration repository for eight months. Several engineers hold clones of that repository.
What is the correct response?
a) Rotate the token at the next scheduled rotation, since rotation and revocation reach the same end state
b) Rewrite the repository history so the file no longer appears, which returns the token to a private state
c) Restrict who may read the repository and leave the token in place, on the grounds that only named accounts can now open the file
d) Revoke the token, issue a replacement, then have the deployment read it from outside the repository