Cloud technology and services
Objective 3 of AWS Certified Cloud Practitioner (CLF-C02), worth 34% of the exam.
- Share of the exam
- 34%
- Questions in a real sitting
- roughly 22 of 65
- Questions in this bank
- 44
- Signed for by a person
- 0
- Machine-checked only
- 44
Partly checked. None of the 44 questions here has been read against the cited source by a person. 44 questions have been checked against their cited clause by an automated pass — which is not the same thing, and is not a signature.
Only questions a person has signed for are used in mock exams here. That is the whole difference between the two kinds of checking above.
What this objective covers
The 44 questions written for this objective cite 8 AWS exam guide task statements (3.1, 3.2, 3.3, 3.4, 3.5, 3.6, 3.7, 3.8).
They break down as 39 single-answer questions and 5 choose-several questions.
Questions on this objective (page 1 of 3)
- A team builds the same stack — a load balancer, three EC2 instances and a database — by clicking through the console once for dev, once for test and once for production. The three environments have quietly drifted apart and a bug that only appears in production took a week to trace to a missing setting. They want the stack described once, reviewed in a pull request, and applied identically to each environment. Which service does that? machine-checked
- A Python reporting job runs unattended every night. Inside its own logic it needs to list objects in an S3 bucket, read a few of them, and write a summary object back, handling failures with the program's existing retry and logging code. What is the appropriate way for that program to call AWS? machine-checked
- A small team has a Java web application and no operations staff. They want to hand AWS the application package and have it provision the instances, the load balancer and the scaling policy, while keeping the ability to inspect and adjust those resources later if they need to. Which service fits? machine-checked
- A manufacturer keeps its plant-floor control application on servers inside the factory, because production must continue when the internet link drops. Its reporting and analytics run in AWS and read the same production data. Which TWO statements about this arrangement are accurate? machine-checked
- An internal application runs on a single EC2 instance in one Availability Zone. During a power event in that Availability Zone the application was unreachable for four hours. The team wants the cheapest change that keeps it serving through the same kind of event, without moving to another Region. What should they do? machine-checked
- A German insurer is told by its regulator that customer records must remain within the European Union. Four candidate Regions can all run every service the workload needs, and one of them is noticeably cheaper per instance-hour. Which consideration settles the choice of Region first? machine-checked
- A training company stores its video files in an S3 bucket in one Region. Learners in Australia and Brazil report several seconds of delay before playback starts, while learners near the Region are happy. Every learner watches the same files. What is the standard fix? machine-checked
- An application already runs across three Availability Zones in one Region, with its data in S3 and its EBS volumes snapshotted nightly. The board now asks what would happen if that entire Region became unavailable. Which TWO changes actually address that risk? machine-checked
- A genomics team runs an analysis that loads a 400 GB reference dataset entirely into memory and then makes many small passes over it. Processor usage stays moderate throughout and there is very little disk activity once the data is loaded. Which EC2 instance family should they start from? machine-checked
- Every new web server in a fleet needs the same operating system hardening, monitoring agent and application runtime. Today an engineer launches a plain Amazon Linux instance and runs a 40-minute setup script by hand, and no two servers end up quite alike. They want a new server ready in about a minute, identical to its siblings. What should they do? machine-checked
- An application writes uploaded customer files to a local NVMe instance store volume on its EC2 instance, alongside its temporary scratch data. The instance was stopped for a maintenance change and started again an hour later. The uploaded files are gone; the operating system and the application, which live on the root EBS volume, are intact. What explains this? machine-checked
- A team is sizing an EC2 instance for a small internal wiki. It is idle for most of the working day and gets short bursts of use when someone searches it. Which TWO statements should guide the decision? machine-checked
- Whenever a user uploads a photo, a three-second job must produce three thumbnails from it. Uploads are wildly uneven: nothing for an hour, then five thousand in a minute. The team does not want to run, patch or scale servers, and wants to pay only when photos actually arrive. What should they use? machine-checked
- One hostname must serve two different back ends: requests whose path starts with /api go to a container service, and everything else goes to a static web tier. The decision has to be made by reading the HTTP path of each request. Which service does this? machine-checked
- A team has containerised its application and wants to keep the container image as its unit of deployment. It does not want to choose, patch, scale or pay for EC2 instances to host those containers. What should it use? machine-checked
- A payroll application is idle overnight and is hammered every weekday between 08:00 and 10:00. The pattern has been the same for three years. The team wants the extra capacity in place before the users arrive, not several minutes after a processor alarm has fired. Which Auto Scaling approach fits best? machine-checked
- A company runs PostgreSQL on a server in its office. The database administrator spends most of her week on backups, minor-version patching and failover rehearsals. The business wants those chores handled by AWS, and the application's existing SQL to keep working unchanged. What should they move to? machine-checked
- An Amazon RDS for MySQL database is deployed Multi-AZ. Heavy reporting queries from the analytics team are now slowing down customer transactions. A manager says: 'We are already paying for a second copy in another Availability Zone — just point the reports at that one.' What is the correct response? machine-checked
- A mobile game stores one profile document per player and looks it up by player id on every session. It needs single-digit millisecond responses, the player count may go from a hundred to two million in a week after a marketing push, and there are no joins or reporting queries. Which database fits? machine-checked
- A product page runs the same expensive aggregate query for every visitor. The underlying data changes a handful of times a day. The database is at 90% processor utilisation and pages take 800 ms to render. Which change removes most of that work? machine-checked
Drill this objective
The trainer can run a practice set drawn from this objective alone, which is what the weight column above is for: revise the heavy objectives first.
Practise Cloud technology and services
The other objectives in AWS Certified Cloud Practitioner (CLF-C02)
- 1. Cloud concepts — 24% of the exam
- 2. Security and compliance — 30% of the exam
- 4. Billing, pricing and support — 12% of the exam