The AWS Certified Solutions Architect – Associate (SAA-C03) exam tests your ability to design distributed systems on AWS. It is one of the most sought-after certifications in the cloud domain.
You are configuring an EC2 instance with a security group. What happens when you allow inbound traffic on port 80?
AAllows HTTP traffic
BAllows HTTPS traffic
CBlocks all traffic
DDisables the instance
Explanation
Allowing inbound traffic on port 80 opens the instance to HTTP traffic, while the other options misinterpret the function of security groups.
Q142
Which AWS service provides a fully managed NoSQL database?
AAmazon DynamoDB
BAmazon RDS
CAmazon Aurora
DAWS Snowflake
Explanation
DynamoDB is a key-value and document database.
Q143
A company needs to analyze large amounts of data in real-time. Which AWS service should they use?
AAmazon Redshift
BAmazon EMR
CAWS Lambda
DAmazon Kinesis
Explanation
Amazon Kinesis streams data for real-time analytics.
Q144
You are configuring an AWS security group. What happens when you specify a rule to allow traffic on a specific port?
AAll inbound traffic is allowed
BOutbound traffic is blocked
COnly specified traffic is allowed
DTraffic on any port is allowed
Explanation
Only specified traffic is allowed through that port.
Q145
Which service is best for managing serverless applications?
AAWS Lambda
BAmazon EC2
CAmazon RDS
DAWS CloudFormation
Explanation
AWS Lambda is designed for serverless applications; the others require provisioning servers.
Q146
A company needs to securely share data across AWS accounts. What is the best solution?
AAWS S3 Cross-Account Access
BAmazon RDS Read Replicas
CEC2 Security Groups
DVPC Peering
Explanation
S3 Cross-Account Access allows controlled data sharing; others do not focus on secure sharing.
Q147
What happens when an EC2 instance is stopped and restarted?
AIt loses its private IP
BIt retains EBS volumes
CIt changes its security group
DIt loses attached EBS data
Explanation
Stopped EC2 instances lose their private IP unless they are elastic; EBS volumes remain attached.
Q148
Which AWS service provides private connectivity to VPCs?
AAWS Direct Connect
BAWS VPN
CAWS CloudFront
DAWS ELB
Explanation
AWS Direct Connect offers dedicated, private connection, unlike others that provide secured public access or load balancing.
Q149
A company needs to orchestrate complex workflows with multiple steps. Which service should they use?
AAWS Lambda
BAmazon SQS
CAWS Step Functions
DAmazon SNS
Explanation
AWS Step Functions is designed for orchestrating multi-step workflows, while the others serve different messaging or function-based purposes.
Q150
What happens when an Auto Scaling group scales in below the minimum size setting?
AScaling operation is stopped
BInstances are forcibly terminated
CGroup maintains minimum instances
DNew instances are launched
Explanation
An Auto Scaling group will maintain at least the minimum set instances by preventing additional removals rather than forcibly terminating instances or launching new ones.