Question 1mediummultiple choice
Full question →mediummultiple choiceObjective-mapped
A company hosts a B2B file exchange site on EC2. Administrators must connect without opening SSH or RDP ports to the internet. What should the architect use?
Answer choices
Why each option matters
Good practice is not just finding the correct option. The wrong answers often show the exact trap the exam wants you to fall into.
A
Distractor review
A bastion host with SSH open to 0.0.0.0/0
Opening SSH broadly increases attack surface.
B
Best answer
AWS Systems Manager Session Manager with the required instance role
Session Manager provides audited shell access without inbound SSH/RDP exposure.
C
Distractor review
A public Elastic IP address on each instance
Public IPs do not provide secure administrative access by themselves.
D
Distractor review
An internet gateway attached to the private subnet
Internet gateways do not make private administration secure.
Common exam trap
Common exam trap: usable hosts are not the same as total addresses
Subnetting questions often tempt you into counting all addresses. In normal IPv4 subnets, the network and broadcast addresses are not usable host addresses.
Technical deep dive
How to think about this question
Subnetting questions test whether you can identify the network, broadcast address, usable range, mask and correct subnet. Slow down enough to calculate the block size correctly.
KKey Concepts to Remember
- CIDR notation defines the prefix length.
- Block size helps identify subnet boundaries.
- Network and broadcast addresses are not usable hosts in normal IPv4 subnets.
- The required host count determines the smallest suitable subnet.
TExam Day Tips
- Write the block size before choosing the subnet.
- Check whether the question asks for hosts, subnets or a specific address range.
- Do not confuse /24, /25, /26 and /27 host counts.
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More questions from this exam
Keep practising from the same exam bank, or move into a focused topic page if this question exposed a weak area.
Question 1
A team needs to distribute TCP traffic (not HTTP) across multiple services. The services must see the original client source IP for auditing. Which AWS load balancer is the best fit?
Question 2
A team wants to run containerized services with AWS-managed orchestration and autoscaling. They do NOT require Kubernetes compatibility. Which AWS service choice is most appropriate to meet these goals?
Question 3
A solutions architect is designing an S3 bucket for a IoT ingestion API. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure? The design must avoid adding custom operational scripts.
Question 4
A solutions architect is designing an S3 bucket for a claims portal. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
Question 5
A team wants to delegate IAM management to developers, but must ensure developers can never grant themselves permissions beyond a specific limit. Which AWS mechanism best matches this requirement?
Question 6
A solutions architect is designing an S3 bucket for a healthcare document service. The objects must never be publicly accessible, even if a developer later adds an overly broad bucket policy. What should the architect configure?
FAQ
Questions learners often ask
What does this SAA-C03 question test?
CIDR notation defines the prefix length.
What is the correct answer to this question?
The correct answer is: AWS Systems Manager Session Manager with the required instance role — Session Manager removes the need for inbound administrative ports and supports logging and IAM-based access control.
What should I do if I get this SAA-C03 question wrong?
Then try more questions from the same exam bank and focus on understanding why the wrong options are tempting.
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