1. Question 1

Three components of Amazon EC2 Auto Scaling

• ❌ Scaling policies, security group, Auto Scaling group

• ✅ Launch template, scaling policies, Auto Scaling group

• ❌ Security group, instance type, key pair

• ❌ AMI ID, instance type, storage

Explanation:
Auto Scaling needs Launch Template, Scaling Policies, and the Auto Scaling Group.

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2. Question 2

Features included in Elastic Load Balancing

• ❌ Automatic scaling

• ❌ RDS integration

• ❌ Integration with Auto Scaling

• ❌ A and B

• ✅ A and C

Explanation:
ELB integrates with EC2 Auto Scaling and supports automatic scaling of traffic handling, not RDS.

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3. Question 3

Do we need to manually register EC2 instances when using ELB + Auto Scaling?

• ✅ True

• ❌ False

Explanation:
Auto Scaling automatically registers and deregisters instances with the load balancer.

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4. Question 4

Choose target groups based on URL path → which ELB?

• ❌ Classic Load Balancer

• ✅ Application Load Balancer

• ❌ Network Load Balancer

• ❌ Target Load Balancer

Explanation:
ALB supports HTTP/HTTPS rules, including path-based routing.

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5. Question 5

Two ways to scale an application

• ✅ Vertically and horizontally

• ❌ Diagonally and vertically

• ❌ Horizontally and diagonally

• ❌ Independently and vertically

Explanation:
Vertical = bigger instance
Horizontal = more instances

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6. Question 6

CloudWatch dashboards use what to view metrics?

• ✅ Widgets

• ❌ Metrics

• ❌ Icons

• ❌ Components

Explanation:
CloudWatch dashboards display graphs, numbers, and logs via widgets.

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7. Question 7

Possible states of a CloudWatch alarm

• ❌ OK, ALARM, NOT_AVAILABLE

• ❌ OK, ALERT, INSUFFICIENT_DATA

• ✅ OK, ALARM, INSUFFICIENT_DATA

• ❌ OK, ALERT, NOT_AVAILABLE

Explanation:
These are the three valid alarm states.

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8. Question 8

What does VPC Flow Logs collect?

• ✅ Data about network traffic in/out of a VPC

• ❌ Malicious activity (use GuardDuty)

• ❌ Configurations (use Config)

• ❌ Compliance info

Explanation:
VPC Flow Logs capture network traffic metadata, not packet content.

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9. Question 9

Benefit of monitoring

• ❌ Monitoring creates overhead

• ❌ Monitoring decreases performance

• ❌ Monitoring increases speed/agility

• ✅ Monitoring recognizes security threats and events

Explanation:
Monitoring helps detect issues, threats, and unusual behavior.

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10. Question 10

Serverless apps may not require VPC networking

• ✅ True

• ❌ False

Explanation:
Many serverless services (Lambda, S3, DynamoDB) don’t require VPC unless accessing private resources.

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🧾 Summary Table

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