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COF-C03 · Practice set 1 of 2

Platform Architecture and Cloud Services: 10 practice questions

10 questions · Untimed · Free

10 free COF-C03 practice questions on Platform Architecture and Cloud Services, with an explanation for every answer. Untimed. The full mock exam and the timed version are in the app.

Set 1 · Platform Architecture and Cloud Services · 10 questions Read the lesson
  1. Question 1 of 10

    Which three layers form the Snowflake architecture?

    1. ADatabase storage, compute, and cloud services
    2. BDatabase storage, networking, and client drivers
    3. CCompute, private hardware, and client software
    4. DCloud services, local storage, and user hardware
    Show the answer

    The architecture separates persisted data, workload execution, and platform coordination into database storage, compute, and cloud services.

    Next → 1 / 10
  2. Question 2 of 10

    What does Snowflake's self-managed service model remove from the customer?

    1. ASelecting which persisted tables a query should read
    2. BChoosing a warehouse for statements that require compute
    3. CSelecting, installing, configuring, and managing service hardware
    4. DSubmitting SQL statements to process stored data
    Show the answer

    Snowflake manages the underlying hardware, software, updates, infrastructure, and ongoing tuning; users still direct their own workloads.

    Next → 2 / 10
  3. Question 3 of 10

    How do two virtual warehouses relate at the compute-resource level?

    1. AThey share one compute cluster but keep separate storage copies
    2. BThey share compute nodes whenever they access the same table
    3. CThey are independent clusters that do not share compute resources
    4. DThey divide one fixed compute pool according to query priority
    Show the answer

    A warehouse owns an independent compute cluster, so another warehouse's workload does not consume its compute resources.

    Next → 3 / 10
  4. Question 4 of 10

    Why is Snowflake described as a hybrid of shared-disk and shared-nothing architectures?

    1. AIt combines central persisted storage with MPP compute clusters
    2. BIt assigns separate cloud-services layers to each storage object
    3. CIt duplicates all persisted data inside every compute cluster
    4. DIt combines local private storage with one shared compute server
    Show the answer

    The shared-disk characteristic is centrally accessible persisted data, while the shared-nothing characteristic is query processing by MPP clusters with local portions of data.

    Next → 4 / 10
  5. Question 5 of 10

    Which responsibility belongs to database storage for Snowflake tables?

    1. AAuthenticating users before they submit their requests
    2. BParsing SQL and dispatching each optimized query
    3. CManaging compressed columnar data and its storage metadata
    4. DProviding the independent cluster that executes each statement
    Show the answer

    The storage layer manages optimized table representation, organization, compression, metadata, statistics, and micro-partitions.

    Next → 5 / 10
  6. Keep the ones you got wrong

    In the app, every question you miss comes back exactly when you’re about to forget it.

  7. Question 6 of 10

    Which activity is coordinated by the cloud services layer?

    1. AExecuting SQL with an independent warehouse cluster
    2. BPersisting table rows in compressed columnar storage
    3. CAuthenticating a request and optimizing its query
    4. DKeeping a local persistent table copy on every node
    Show the answer

    Cloud services handles request coordination, including authentication, metadata, parsing, optimization, and dispatch.

    Next → 6 / 10
  8. Question 7 of 10

    Which deployment request conflicts with the Snowflake service model?

    1. AInstall Snowflake on hosted private-cloud infrastructure
    2. BUse public-cloud storage for persistent Snowflake table data
    3. CRun SQL on a Snowflake-managed virtual compute instance
    4. DLet Snowflake manage software updates and infrastructure
    Show the answer

    Snowflake runs as a self-managed service on public-cloud infrastructure and is not installable on either hosted or on-premises private clouds.

    Next → 7 / 10
  9. Question 8 of 10

    Two teams query the same persisted tables, but one team's heavy workload must not reduce the other's compute performance. Which architectural choice addresses this requirement?

    1. AAssign each team an independent virtual warehouse
    2. BPlace both teams on the same warehouse compute cluster
    3. CCreate a separate cloud-services layer for each team
    4. DCopy every table into each warehouse's persistent storage
    Show the answer

    Independent virtual warehouses isolate compute performance while retaining access to centrally persisted data.

    Next → 8 / 10
  10. Question 9 of 10

    A request is authenticated and parsed successfully, but no execution resources have yet run the SQL. Which handoff should occur next?

    1. AThe warehouse moves persisted data into private-cloud storage
    2. BDatabase storage authenticates the request on a compute node
    3. CCloud services dispatches the work to the selected warehouse
    4. DA client driver optimizes and executes the query without compute
    Show the answer

    Cloud services coordinates authentication, parsing, optimization, and dispatch; the selected warehouse then supplies execution compute.

    Next → 9 / 10
  11. Question 10 of 10

    A team wants to set the file size, compression, and internal organization of every Snowflake table manually. What should the architect explain?

    1. ASnowflake manages those storage details and table organization
    2. BEvery query must recreate those details before execution begins
    3. CEach virtual warehouse must configure those details independently
    4. DCloud services delegates those details to each client driver
    Show the answer

    Snowflake manages organization, file size, structure, compression, metadata, and statistics for data loaded into Snowflake tables.

    Next → 10 / 10
  12. You’ve finished this set

    That’s 10 questions on Platform Architecture and Cloud Services. In the app the ones you miss come back exactly when you’re about to forget them.

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