5 exercises — practise distinguishing "as soon as" and "once" in technical sequencing.
0 / 5 completed
1 / 5
Which sentence correctly uses "as soon as" to stress that an action happens immediately after a trigger?
"As soon as the health check passes, the load balancer starts routing traffic to the new instance" correctly uses the present simple in the "as soon as" clause to refer to a future trigger, matching standard time-clause rules. Option B incorrectly uses "will pass" inside the time clause. Option C incorrectly combines "will" with the past participle "started". Option D is missing the required "as" after "soon", breaking the fixed phrase.
2 / 5
Which sentence correctly uses "once" to describe a more general sequencing step, without implying the same strict immediacy as "as soon as"?
"Once the schema migration finishes, the reporting jobs can be re-enabled" correctly uses "once" with the present simple to introduce a completed prerequisite, without the strict same-instant emphasis that "as soon as" would add. Option B incorrectly combines "once" with "as". Option C incorrectly uses "will finish" in the time clause. Option D incorrectly follows "can be" with a gerund instead of the past participle "re-enabled".
3 / 5
Which sentence correctly chooses "as soon as" over "once" because the reaction must be immediate, in an alerting policy?
"As soon as CPU usage crosses 90%, the autoscaler must provision an additional node" correctly signals that provisioning must happen the instant the threshold is crossed, which is exactly what an alerting policy requires. Option B uses "once...eventually", which contradicts the urgency an alerting policy demands. Option C drops "as" after "soon". Option D incorrectly uses "will cross" inside the time clause.
4 / 5
Which sentence correctly uses "once" in the past tense to describe a one-time historical sequencing event in a postmortem?
"Once the failover completed, traffic returned to normal within thirty seconds" correctly uses the simple past in both clauses to describe a completed historical sequence. Option B incorrectly mixes a future form into a past narrative. Option C incorrectly mixes a future form in the main clause of a past narrative. Option D incorrectly inserts "as" after "once".
5 / 5
Which sentence correctly negates the condition in an "as soon as" clause to describe an escalation policy?
"As soon as the retry count exceeds three without success, the job escalates to a human operator" correctly uses the present simple in both the time clause and the main clause to describe a standing escalation rule. Option B drops "as" after "soon". Option C incorrectly uses "will exceed" in the time clause. Option D incorrectly combines "will" with the past participle "escalated" instead of the bare verb.