Classify twelve real services by what the customer still has to patch

short · 40 min · Objective 4.2

Task

Apply the identifying question to services you actually use, and find the ones where your answer changes depending on which part of the service you consider.

Steps

  1. List twelve services you or your organisation use in lab/models/services.txt, one per line, from at least three different providers.
  2. Classify each in lab/models/classified.csv with header service,model,customer_patches,customer_configures,evidence.
  3. Record in lab/models/responsibility.csv with header model,provider_owns,customer_owns the split for each of the three models, listing at least four items on each side.
  4. Identify at least two services whose classification is arguable, and write lab/models/arguable.md stating both readings and which part of the service each applies to.
  5. Write lab/models/never-transfers.md listing the responsibilities that stay with the customer in every model, with one real incident shape for each.

Verify

grep -c . lab/models/services.txt
awk -F, 'NR>1 && NF>=5 {n++} END {print n" service(s) classified"}' lab/models/classified.csv
awk -F, 'NR>1 {print $2}' lab/models/classified.csv | sort -u | wc -l
awk -F, 'NR>1 && NF>=3 {n++} END {print n" model(s) split"}' lab/models/responsibility.csv
grep -c . lab/models/arguable.md
grep -Eic 'identity|access|data|configuration' lab/models/never-transfers.md

Twelve services, twelve classifications across at least two distinct models, three responsibility splits, an arguable note, and the never-transfers list naming identity, access, data and configuration. If every service classified as the same model, the list was drawn from one provider.

Notes

The arguable cases are the valuable ones. A managed database inside a wider platform is platform as a service from one angle and infrastructure from another, and being able to say which part you mean is the skill.

This is an independent study companion for CompTIA A+ Core 1 220-1201 and is not produced by or endorsed by CompTIA.