Leveraging Serverless Technologies for Cloud Native Development

1Z0-1084-26 · 99 questions

• A parks department wants small event-driven handlers that run only when invoked, without managing worker shapes or patching guest OS. Which OCI approach matches that model?
• OCI Functions documentation names the open-source, container-native serverless engine that powers the service and shares the fn CLI and func.yaml model. Which engine is that?
• A civic tech team wants to iterate on a function on a workstation and later deploy the same unit to OCI Functions with one toolchain. What workflow does OCI document?
• When creating OCI Functions for a utility billing notifier, where must network attachment and shared configuration be defined so every function in the group inherits them?
• In OCI Functions, which statement correctly distinguishes the function from its application?
• A library IT team will implement an OCI Function using the documented Fn Development Kit. Which statement matches official runtime guidance?
• A county analytics function needs GraalVM packaging that the standard FDK runtime images do not cover. What advanced OCI Functions packaging path is documented?
• After changing memory and timeout in a function’s func.yaml for a city alerts handler, what must the developer do before the running OCI Function uses those values?
• A developer runs fn init --runtime python water-quality-check for a new OCI Function. What does that command produce?
• What does the professional default command fn deploy --app <app-name> accomplish for an OCI Function?
• A developer’s fn deploy cannot find the municipal Functions application even though the app exists in OCI. Which Fn CLI configuration most directly explains targeting the wrong place?
• When creating an OCI Functions application for a permits webhook, which documented subnet pairing applies?
• For high availability of OCI Functions executions across availability domains, what subnet choice does official guidance prefer when available?
• After fn deploy, where does OCI Functions obtain the container image it runs for a function?
• Which set lists documented ways to invoke an OCI Function?
• A citizen portal must wait for a function’s response body before rendering the next page. Which OCI Functions invoke type should the portal use?
• What are the documented default and maximum durations for a synchronous OCI Functions invocation?
• For a detached OCI Functions invocation that should not block the caller, what is the documented upper bound for detachedModeTimeoutInSeconds?
• A county permit office deploys an Oracle Function that validates uploaded site plans. The handler sometimes spikes above its configured memory and the invoke fails mid-run. Which statement correctly describes how Oracle Functions treats memory?
• A city clerk wants an Oracle Function to accept a full multi-megabyte zoning PDF in the invoke body and return a similarly large annotated copy. What is the correct design constraint?
• After overnight idle time, the first call to a parks-department Oracle Function takes several seconds, while immediate follow-up calls return much faster. What explains the slow first invoke?
• A 311-call triage function must keep sub-second starts during morning peaks; cold starts are unacceptable. Which Oracle Functions capability should the team configure?
• A water-utility team needs every Oracle Function in one application to read the same Object Storage bucket name without rebuilding images when the name changes. Where should that value live?
• A municipal Functions application sets REGION=us-ashburn-1 for all handlers, but the GIS export function must use a different region key. How should that override be applied?
• A library catalog function must list objects in an Object Storage bucket at runtime without embedding long-lived user API keys in configuration. What is the correct authentication approach for the running function?
• Public works receives occasional Object Storage uploads of inspection photos and needs a short, stateless transform with scale-to-zero between jobs. Which runtime choice best fits?
• A transit agency needs a long-running HTTP fare API with custom sidecars and readiness probes, plus a worker that keeps a Streaming cursor open. Where should those processes run?
• A planning department wants official OCI services to invoke a zoning-check Oracle Function. Which set correctly reflects documented invokers for this exam’s common choices?
• A developer copies a local Fn Project func.yaml that includes a triggers HTTP section into an OCI Functions deploy for a city payments helper. The deploy fails. What is the fix?
• A records-office function usually finishes in under 20 seconds, but the team set timeout to 300 seconds “just in case.” What is the recommended timeout practice?
• After adding a heavier library, a Java Oracle Function for tax-roll transforms begins returning FunctionInvokeTimeout / 504 even though wall-clock work used to finish. What should the team check first among Functions settings?
• A county automation lead asks whether Oracle Functions only consume events or also produce them. What is accurate?
• A municipality wants one HTTPS hostname for clients that reaches load-balanced microservices and several Oracle Functions without handing out raw function invoke URLs. Which component should sit in front?
• An internal HR API for city employees must not be reachable from the public internet, while a second citizen portal API must be. How do API Gateway front-end types differ?
• A network-aware developer is placing an API Gateway for a permits API. Which placement rule is correct?
• After creating an empty API Gateway appliance for a licensing portal, clients still receive nothing useful. Which object must exist before the API accepts requests?
• On a parks recreation API, GET /permits should invoke one Oracle Function and POST /permits should invoke another. What is the correct unit in the deployment specification?
• A citizen-services team wants HTTPS clients to call an Oracle Function through a normal API path without exposing the signed invoke endpoint or adding a func.yaml triggers block. Which API Gateway back-end type fits?
• A long-running permitting microservice already listens behind a load balancer on OKE. The team wants API Gateway to forward /v1/applications there. Which back-end choice is appropriate?
• Before wiring live back ends, a developer wants /health on a new municipal API deployment to always return a fixed 200 body from the gateway itself. Which back-end type should they use?
• Three city departments want separate API path prefixes and policies but one shared public hostname. When is a second API Gateway unnecessary?
• Securing a unified permitting API, the team must decide where authentication is declared on API Gateway. Which statement is correct?
• On the same API deployment, /health should allow anonymous clients while /admin must require a specific access scope after authentication. How is that modeled?
• A city’s building-permit portal must reject callers unless a custom combination of API key header, department code, and an internal lookup succeeds. Standard JWT validation alone is not enough. Which API Gateway authentication approach should the developer choose?
• A municipal 311 API needs new custom authentication that inspects several request headers and a query parameter. The team is wiring an OCI Functions authorizer to API Gateway. Which authorizer shape should they choose for a new implementation?
• A county library API uses an OCI Functions authorizer in front of HTTP back ends. After authentication succeeds, routes must enforce which operations the patron may perform, and one back-end URL needs a library-branch id injected from the authorizer. What should the authorizer return?
• A city’s open-data single-page app in the browser must call an OCI API Gateway deployment. Developers need the gateway to answer CORS preflight and attach the configured CORS headers on actual responses. How should CORS be implemented?
• A parking-citation API behind one OCI API Gateway deployment is overwhelmed by a noisy public client. Operators want a simple ceiling that protects every back end on that deployment. Per-partner paid tiers will come later. Which control matches that need?
• A water-utility billing API exposes a public JSON field named accountId, but the stable HTTP back end still expects customerNumber. The team wants the public contract to evolve without forking the Function. Which gateway capability should they use?
• A building-department API receives incomplete permit payloads that waste Function invocations. The team wants malformed requests rejected at the front door before any back end runs. Which API Gateway feature fits?
• A regional transit agency sells partner access to a real-time arrival API on OCI API Gateway. Product wants per-second rates, monthly quotas, and a list of which deployments each subscriber may call, using a client token only for metering. What does a usage plan provide in this model?
• A parks-and-recreation team has an OpenAPI 3.0 description for a new reservations API and wants OCI API Gateway routes pre-populated from that file. Creating an API resource is optional. What happens when they upload the OpenAPI description?
• A city’s sanitation department is shipping a mobile app for bulky-item pickup. Developers considered giving every phone a direct Oracle Functions invoke URL and an API-signing key. Why should external clients call OCI API Gateway over HTTPS instead?
• An economic-development office created an OCI API Gateway and defined routes on paper, but callers still receive nothing useful. What must exist before the gateway can serve the API?
• A transit authority continuously publishes ridership pings, vehicle telemetry, and lifecycle events that several analytics services must read at their own pace in order. Which OCI service model fits this pattern?
• A metro government wants several related OCI Streaming streams—permits, inspections, and payments—to share Kafka compatibility settings, encryption, and an optional private endpoint. Which construct owns those shared settings?
• A 911 computer-aided dispatch feed on OCI Streaming must let several consumers process messages in parallel. What is the unit that determines that parallelism?
• A permit-tracking service publishes status updates on OCI Streaming. All updates for the same permit number must be processed in order, while different permits may run in parallel. How should messages be keyed?
• After a restart, a city’s smart-meter consumer must resume reading an OCI Streaming partition without replaying the entire retention window. Which concept marks the consumer’s place in that partition?
• A public-works telemetry reader needs to start at a specific time in an OCI Streaming partition without deleting messages when they are read. Which construct points at that location?
• Several inspector-app instances must jointly consume a multi-partition work-order stream on OCI Streaming so each partition is handled by only one instance at a time. Which feature coordinates that assignment?
• Streetlight controllers publish events to OCI Streaming. A flaky consumer may see the same message again after a failed commit, and another team may replay within the retention window after a bug fix. What delivery and retention behavior should handlers assume?
• A parking-enforcement feed uses multiple OCI Streaming partitions for throughput. Stakeholders ask whether the entire stream preserves a single global order of every citation. What is the correct order guarantee?
• A city-council meeting chat pipeline creates a new OCI Streaming stream for live reactions. Operators need the valid retention window, the default, and whether retention can be changed later. Which statement is correct?
• Parking-sensor producers already speak Kafka APIs. The city wants those clients to publish into OCI Streaming without running a self-managed Apache Kafka cluster. What capability should they rely on?
• A records office wants first-party and third-party systems to exchange data with OCI Streaming without writing a custom pump for every product. Which documented integration path fits?
• A health department publishes sensitive lab-result events to OCI Streaming and must keep producers and consumers off the public internet while still using IAM to control who may produce or consume. Which stream-pool option supports that attachment model?
• A court-records analytics stream on OCI Streaming must use a customer-managed encryption key instead of relying only on Oracle-managed keys. Where is that customer-managed key sourced?
• A city permits bureau streams inspection updates into OCI Streaming and must transform each partition’s messages with an Oracle Function before writing results to Object Storage, preserving order. Which documented path wires the stream through the function?
• A municipal transit dashboard has many producers continually appending vehicle telemetry, and several independent analytics consumers must read—and sometimes replay—the same data with per-partition order and Kafka-shaped clients. Which OCI service should carry that bus?
• A parks department developer is designing subscriptions for bucket and database lifecycle changes. What envelope do OCI services use when they emit those resource-state messages through the Events service?
• A city open-data team wants OCI to react when certain resource changes occur. In the Events service model, what developer object combines the match criteria with the destinations that receive a match?
• A wastewater SCADA modernization project needs an Events rule to deliver matching OCI resource changes somewhere useful. Which set lists the documented Events action destinations?
• A library IT developer creates an Events rule so Object Storage object creates can start processing. What should be the primary filter condition in the official create-rule flow?
• A city’s Events rule already matches Object Storage create-object events, but every bucket in the tenancy would fire it. How should the developer narrow matches to one bucket’s family of resources?
• Operations tags databases that need automated follow-up. Which Events capability aims a rule at only those labeled resources without listing every OCID?
• A planning department keeps emitting Object Storage and database resources in a nested compartment tree. Where should the Events rule live so it sees those emissions, and must the Function action live in the same compartment?
• A records office writes a perfect Events rule for com.oraclecloud.objectstorage.createobject, yet uploads never trigger the Function. What Object Storage requirement is most likely missing?
• A building-permits office wants each new scan that lands in a bucket to be converted by serverless code. Which Events pattern implements that event-driven conversion?
• When a municipal database backup completes, on-call staff should get an email or pager alert. If instead the match must resize or convert a resource, which Events actions fit those two intents?
• Several downstream municipal services—and a short replay window—must all see the same OCI resource-state change that an Events rule matches. Which action destination fits that fan-out?
• A civic apps team debates where to put continuous click-stream telemetry versus reactions to OCI bucket and database state changes. Which distinction correctly separates Events from Streaming?
• Microservice A in a city payments mesh must ask microservice B to process a refund job. Separately, a bucket change should start automation. Which producer distinction guides Events versus Queue?
• Before enabling an Events rule that should invoke a Function and also notify a topic, what must already be true about those destinations?
• After an Events rule matches, what is the service’s responsibility versus the destination’s, and how should multi-step follow-up be designed?
• A licensing microservice must hand independently processed transactional jobs to worker services without treating the traffic as an analytics log or as OCI resource automation. Which OCI service fits that consume-and-complete inbox?
• Workers for a city citation processor use OCI Queue. Which sequence reflects the official message lifecycle principles after a producer publishes work?
• Two worker pods poll the same municipal Queue. What does the visibility timeout provide after one consumer receives a message?
• A GIS export worker pulled a Queue message but processing will exceed the remaining visibility window. What should the consumer do so the message does not return mid-work?
• A utility billing worker crashes after consuming a Queue message but before deleting it. What happens when visibility ends, and what design duty follows?
• Poison messages keep failing a city inspections worker. After repeated unsuccessful gets without a successful update or delete, where do those messages go on OCI Queue?
• Capacity planners ask how long undeleted OCI Queue messages can remain compared with Streaming retention. Which statement matches official Queue retention?
• A 311 request-reply API and fair work distribution across producers share one OCI Queue. Which Queue feature provides ephemeral destinations for fairness and caller-specific replies?
• A city inspection desk polls OCI Queue with GetMessages for new site-visit jobs. Empty replies keep the worker chatty. Which setting lets a single GetMessages wait up to thirty seconds for a message instead of returning empty right away?
• A parking-citation microservice must pull work from OCI Queue. Which client approaches does Oracle document for Queue access?
• A public-works app must hand each repair ticket to exactly one worker, hide it while in flight, and remove it after success—with no need for a second team to replay yesterday’s tickets. Which OCI messaging choice fits?
• The permitting service must ask a separate provisioning service to create a field tablet record, while Object Storage createobject events should invoke a Function. Which pairing is correct?
• Tax-notice producers spike overnight while consumers process steadily by day. Where should the backlog live, and what still must run the business logic?
• Building-permit review and fee-collection microservices must scale independently, keep each task until success or dead-letter, and avoid losing work if one side slows. Which Domain 3 service best fits that decoupling?