220-1201 Cloud Computing Concepts Practice Question
This 220-1201 practice question tests your understanding of cloud computing concepts. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
A marketing department wants to access a shared calendar and document editing tools without installing any software on their local machines. Which cloud service model would best meet this requirement?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "best"
Why it matters: Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Software as a Service (SaaS)
This question tests understanding of cloud service models. Software as a Service (SaaS) provides ready-to-use applications over the internet, eliminating the need for local installation. The scenario specifically requires access to calendar and document editing tools, which are typical SaaS offerings.
Key principle: NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✗
Infrastructure as a Service (IaaS)
Why it's wrong here
IaaS provides virtualized computing resources like servers and storage, not pre-built applications.
✗
Platform as a Service (PaaS)
Why it's wrong here
PaaS offers a development platform for building and deploying custom applications, not ready-to-use software.
✓
Software as a Service (SaaS)
Why this is correct
SaaS delivers fully managed applications over the internet, accessed via a web browser, matching the need for calendar and document tools.
Clue confirmation
The clue word "best" in the question point toward this answer.
Related concept
Static NAT maps one inside address to one outside address.
✗
Function as a Service (FaaS)
Why it's wrong here
FaaS allows running individual functions in response to events, typically for serverless computing, not end-user applications.
Common exam traps
Common exam trap: NAT rules depend on direction and matching traffic
NAT is not only about the public address. The inside/outside interface roles and the ACL or rule that matches traffic are just as important.
Detailed technical explanation
How to think about this question
NAT questions usually test address translation, overload/PAT behaviour, static mappings and whether the right traffic is being translated. Read the interface direction and address terms carefully.
KKey Concepts to Remember
Static NAT maps one inside address to one outside address.
PAT allows many inside hosts to share one public address using ports.
Inside local and inside global describe the private and translated addresses.
NAT ACLs identify traffic for translation, not always security filtering.
TExam Day Tips
→Identify inside and outside interfaces first.
→Check whether the scenario needs static NAT, dynamic NAT or PAT.
→Do not confuse NAT matching ACLs with normal packet-filtering intent.
Key takeaway
NAT direction and interface roles matter as much as the IP address mapping. Inside/outside designation controls which traffic is translated.
Real-world example
How this comes up in practice
A small business has 20 workstations on the 192.168.1.0/24 network and one public IP from its ISP. The router uses PAT (NAT overload) so all 20 devices share one public address using different source ports. NAT questions test whether you understand the four address terms and which direction each translation applies.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this 220-1201 question in full detail.
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Cloud Computing Concepts — This question tests Cloud Computing Concepts — Static NAT maps one inside address to one outside address..
What is the correct answer to this question?
The correct answer is: Software as a Service (SaaS) — This question tests understanding of cloud service models. Software as a Service (SaaS) provides ready-to-use applications over the internet, eliminating the need for local installation. The scenario specifically requires access to calendar and document editing tools, which are typical SaaS offerings.
What should I do if I get this 220-1201 question wrong?
Review the four NAT address types (inside local, inside global, outside local, outside global), PAT port overload, and static vs dynamic NAT use cases. Then practise related 220-1201 NAT questions on configuration and troubleshooting.
Are there clue words in this question I should notice?
Yes — watch for: "best". Signals that multiple options may be partially correct. Choose the option that most directly solves the exact problem described, not the one that sounds most complete.
What is the key concept behind this question?
Static NAT maps one inside address to one outside address.
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Question Discussion
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