I.1 module quiz
Ten questions. 80% to pass (8 of 10). Open book, unlimited retakes.
Answers are collapsed under each question. Answer first, then check.
Q1
A data centre is:
A. A spreadsheet that lists every cloud charge
B. The website you use to manage cloud resources
C. A type of discount for using one provider for several years
D. A building full of computers with its own power and cooling
Show answer
Correct: D. The cloud runs in data centres: large buildings of ordinary computers with their own power, cooling and security. B describes the console, a website you use to manage what you rent.
Q2
A rented cloud machine costs an illustrative $0.10 per hour and is left on for a whole month (about 730 hours). Roughly what does it cost?
A. About $73
B. About $7
C. About $730
D. About $10
Show answer
Correct: A. Rate times hours: $0.10 x 730 = $73. This is the most important sum in cloud cost, and the hours are the part you control.
Q3
Buying servers up front is an example of:
A. Operating expenditure, paid month by month
B. A pay-as-you-go cloud subscription, billed every month
C. Capital expenditure, paid before the servers are used
D. A free tier
Show answer
Correct: C. Buying hardware up front is capital expenditure (capex). Renting from the cloud is operating expenditure (opex), paid month by month.
Q4
For which kind of demand does renting from the cloud usually save the most?
A. Demand that is flat and predictable for many years
B. Demand that rises and falls, with busy and quiet periods
C. Demand that only exists on machines you already own
D. Demand that is impossible to measure in any way
Show answer
Correct: B. Renting lets you pay for extra machines only in the busy periods. For flat, predictable demand, owning can be competitive.
Q5
Under the shared responsibility model, which stays your job when you rent from the cloud?
A. Choosing what to run and switching off what is not needed
B. Repairing the provider’s physical servers when they fail
C. Cooling the provider’s data centre
D. Paying the provider’s electricity supplier
Show answer
Correct: A. The provider looks after buildings, power and hardware. What you rent and how long you keep it running are your decisions.
Q6
What does Google Cloud call its rented virtual machine service?
A. EC2
B. Azure Blob Storage
C. Lambda
D. Compute Engine
Show answer
Correct: D. Compute Engine is Google Cloud’s virtual machine service. EC2 is the AWS equivalent. Blob Storage is Azure’s file storage, and Lambda is AWS’s service for running code on demand.
Q7
A virtual machine is:
A. A computer that only exists on paper in a project’s test plan
B. A machine that runs without electricity
C. A slice of a physical computer that behaves like its own computer
D. A video recording of a server
Show answer
Correct: C. When you rent “a server” in the cloud, you usually get a virtual machine: part of a big physical computer that acts like a separate one.
Q8
What is an availability zone?
A. A country where the cloud is legally allowed
B. One or more data centres in a region, with their own power and network
C. The hours of the day when cloud machines are cheapest
D. A list of the services that are available to you on the free tier
Show answer
Correct: B. A region holds several zones. Each zone has its own power, cooling and network, so one failure does not take down the whole region.
Q9
The same machine is listed at different prices in two regions. Which is the most likely reason?
A. One of the two prices is a mistake by the provider
B. Prices change randomly every hour
C. Only one region charges for compute
D. Land, power, tax and demand differ between places
Show answer
Correct: D. Location is part of the price because the provider’s own costs differ from place to place. Prices are published and stable, not random.
Q10
A company runs some systems on Google Cloud and others on Azure. Why does this make cost harder to read?
A. Each provider’s bill uses different names and layouts
B. Using two providers is not allowed by either provider
C. Neither provider sends a bill when you use the other
D. Both providers charge double for multi-cloud customers
Show answer
Correct: A. Multi-cloud is common and allowed. The difficulty is that each bill names the same ideas differently, so you have to translate before you can compare.
What’s next
Back to What the cloud actually is.