Oracle 1Z0-1109-26 Certification Sample Questions and Answers

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Oracle 1Z0-1109-26 Sample Questions:

01. A Dockerfile ends with an instruction that names the program the container runs. The team wants the container to always run that program, while allowing the arguments passed to it to be supplied when the container is started.
How should the final instructions be written?
a) Use CMD for the program, since a command supplied at start time is appended to it as arguments
b) Use RUN for the program, establishing it during the build where it cannot be overridden later
c) Use ENTRYPOINT for the program and CMD for the default arguments
d) Use ENTRYPOINT for the program and ENV for the default arguments
 
02. An OCI DevOps project mirrors an application repository hosted on an external Git provider, and build pipelines run from the mirrored copy. A developer clones the mirrored repository in OCI, commits a fix directly to it, and reports that the change has not appeared for their colleagues working on the external provider.
What explains this?
a) Mirroring copies the external repository into OCI in one direction, so the external provider remains the source of truth
b) The mirror synchronizes on a schedule, so the colleagues will see the commit once the next synchronization runs
c) The developer committed to a branch that is excluded from the mirror, so only the tracked branches are shared
d) The commit must be delivered as an artifact before the external provider will accept it into its history
 
03. An organization runs a large monolithic application that cannot be taken out of service for an extended rewrite. The team wants to move to microservices while keeping the system running, releasing value along the way, and limiting the risk carried by any single change.
Which approach meets these constraints?
a) Rewrite the application as microservices in parallel, and switch over once the replacement reaches feature parity
b) Replace capabilities one at a time behind the existing entry point, routing each to its new service as it is ready
c) Deploy the existing monolith as a container and scale out additional copies as demand requires
d) Split the monolith's database first, then divide the application code along the resulting data boundaries
 
04. A payments API runs on an OKE cluster and is consumed only by other pods in the same cluster. The team wants a stable address and load balancing across its replicas, and the service must not be reachable from outside the cluster.
Which Service type meets this requirement?
a) NodePort, which reserves the same port on every worker node and forwards connections arriving there to the service's pods
b) LoadBalancer, which asks the platform to provision an external load balancer in front of the service's pods
c) ClusterIP, which allocates a virtual address reachable only from inside the cluster and balances across its pods
d) ExternalName, which maps the service to an external DNS name so that in-cluster clients resolve it transparently
 
05. A deployment pipeline delivers a Kubernetes manifest artifact to an OKE environment. The manifest's image field is written with a parameter placeholder so that each release can supply its own tag. The stage completes, but the cluster reports that it cannot pull an image whose tag is the placeholder text itself.
What went wrong?
a) The artifact was registered as a generic artifact rather than a Kubernetes manifest, so its contents were delivered unprocessed
b) The placeholder syntax is only supported in build specifications, so a manifest artifact cannot carry one
c) The cluster lacks an image pull secret for the registry, so the tag in the error is incidental to the real failure
d) No value was supplied for that parameter, so the placeholder was passed through to the cluster unresolved
 
06. Two teams share one OKE cluster. Each needs its own copy of objects that carry the same names, such as a Deployment called api and a ConfigMap called settings, and each team's access is to be granted separately.
Which Kubernetes mechanism provides this separation?
a) Give each team its own namespace, which scopes object names and is the boundary access is granted against
b) Give each team its own node pool, so each team's objects are placed on separate workers
c) Give each team its own cluster, since object names are unique across a whole cluster
d) Give each team its own label selector, so each team's objects are filtered from the other's view
 
07. An application running on a group of compute instances writes structured log files to disk. A log group has been created in OCI Logging and the team has searched it for the application's entries, but the search returns nothing. Service logs from other OCI resources in the same compartment appear normally.
What is the most likely cause?
a) The log group was created in the wrong compartment, so the application's entries are being written elsewhere
b) No custom log and agent configuration has been set up to collect the application's files from the instances
c) The search query is missing a time range, so Logging Search returns no results by default
d) A service connector must be configured before any log becomes searchable within the Logging service
 
08. Before applying a change to a production network configuration, an engineer wants a reviewable statement of exactly which resources will be created, changed or destroyed, without anything being altered.
Which Terraform operation produces this?
a) terraform init, which prepares the working directory and reports what the configuration requires
b) terraform apply with the changes reviewed in its output before they are confirmed
c) terraform plan, which compares the configuration against the recorded state and lists the actions needed
d) terraform validate, which checks the configuration and reports the resources it defines
 
09. An OKE cluster hosts several microservices that must be published on one hostname, with requests routed to different backend Services by URL path. The team wants to avoid provisioning a separate load balancer for each microservice, and needs to terminate HTTP traffic centrally.
Which approach satisfies this?
a) Deploy the microservices into separate namespaces, and rely on the cluster's DNS to resolve each path to the right namespace
b) Give each microservice its own Service of type LoadBalancer, and place the resulting addresses behind a shared DNS name
c) Expose the microservices through NodePort Services, and have clients select a path by choosing the matching node port
d) Define an Ingress resource whose rules map each path to its backend Service, and run an ingress controller in the cluster so that they are enforced
 
10. A team runs a web service on an OKE cluster backed by a single managed node pool. During a traffic peak the Deployment's replica count rises as expected, but several of the new pods stay in Pending and never start. Describing one of them shows that no node has enough allocatable CPU to place it.
Which action resolves the pending pods?
a) Raise the Horizontal Pod Autoscaler's maximum replica count, so the Deployment is permitted to create the additional pods the load requires
b) Enable the Cluster Autoscaler on the node pool, so that unschedulable pods cause more worker nodes to be added
c) Enable the Vertical Pod Autoscaler on the Deployment, so each replica receives a larger CPU request and is scheduled sooner
d) Add a readiness probe to the Deployment, which withholds inbound traffic from each replica until it reports itself ready

Answers:

Question: 01

Answer: c

Question: 02

Answer: a

Question: 03

Answer: b

Question: 04

Answer: c

Question: 05

Answer: d

Question: 06

Answer: a

Question: 07

Answer: b

Question: 08

Answer: c

Question: 09

Answer: d

Question: 10

Answer: b

 

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