AWS EC2 Numerical Questions ❓

• What is the maximum number of EC2 instances you can launch by default in a single region?
  Answer: 20
• How many minutes does AWS guarantee for EC2 spot instance interruption notice?
  Answer: 2 minutes
• What is the minimum number of subnets required in different Availability Zones for a multi-AZ deployment?
  Answer: 2
• How many Elastic IP addresses can you have per region by default?
  Answer: 5
• What is the maximum number of security groups that can be attached to an EC2 instance?
  Answer: 5
• What is the minimum size (in GiB) of an EBS General Purpose (gp3) volume?
  Answer: 1 GiB
• What is the maximum number of EC2 instances you can have in an Auto Scaling group?
  Answer: 1000
• What is the maximum number of IOPS supported by an io2 EBS volume?
  Answer: 256,000 IOPS
• How many different instance types are offered in the EC2 Free Tier?
  Answer: 1 (t2.micro or t3.micro depending on the region)
• How many secondary private IP addresses can be assigned to an EC2 instance in a VPC?
  Answer: 249
• What is the maximum lifetime (in days) of a Spot Fleet request?
  Answer: 90 days
• What is the default VPC CIDR block size for a new AWS region?
  Answer: /16 (65536 IP addresses)
• How many instances can you reserve with a single Reserved Instance purchase?
  Answer: 1
• How long can an EC2 instance run as part of the EC2 Free Tier?
  Answer: 750 hours per month
• What is the maximum volume size (in TiB) of an EBS General Purpose (gp3) volume?
  Answer: 16 TiB
• What is the minimum interval (in seconds) for CloudWatch monitoring of EC2 instances?
  Answer: 1 second (for detailed monitoring)
• What is the maximum bandwidth (in Gbps) supported by a c5n.18xlarge instance?
  Answer: 100 Gbps
• How many Launch Configurations can you create for an Auto Scaling group?
  Answer: 1 (per Auto Scaling group)
• What is the maximum number of IAM roles that can be attached to an EC2 instance at a time?
  Answer: 1
• How many minutes does it typically take to create an Amazon Machine Image (AMI) from an EC2 instance?
  Answer: 5–10 minutes
• What is the maximum number of instances that an EC2 Auto Scaling Group can scale out at one time?
  Answer: 1000
• What is the maximum number of Elastic Network Interfaces (ENIs) an m5.large EC2 instance can support?
  Answer: 3
• What is the maximum volume size (in GiB) of an EBS provisioned IOPS (io1/io2) volume?
  Answer: 64 TiB
• How many Availability Zones can an EC2 instance be launched in a region by default?
  Answer: 3 or more (depending on the region)
• How many Dedicated Hosts can you allocate in a region by default?
  Answer: 2 per instance family

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