AWS Questions and Answers 41-50

Q41) What are the types of queues in SQS?

Answer: There are 2 types of queues in SQS.
    • Standard queue
    • FIFO (First In First Out)

Q42) What is multi-AZ RDS?

Answer: Multi-AZ (Availability Zone) RDS allows you to have a replica of your production database in another availability zone. Multi-AZ (Availability Zone) database is used for disaster recovery. You will have an exact copy of your database. So when your primary database goes down, your application will automatically failover to the standby database.

Q43) What are the types of backups in RDS database?

Answer: There are 2 types of backups in RDS database.
    • Automated backups
    • Manual backups which are known as snapshots.

Q44) What is the difference between security groups and network access control list?

    • Security Groups Network access control list
    • Can control the access at the instance level
    • Can control access at the subnet level
    • Can add rules for “allow” only
    • Can add rules for both “allow” and “deny”
    • Evaluates all rules before allowing the traffic Rules are processed in order number when allowing traffic.
    • Can assign unlimited number of security groups
    • Can assign upto 5 security groups.
    • Statefull filtering Stateless filtering

Q45) What are the types of load balancers in EC2?

Answer: There are 3 types of load balancers,
  • Application load balancer
  • Network load balancer
  • Classic load balancer

Q46) What is and ELB?

Answer: ELB stands for Elastic Load balancing. ELB automatically distributes the incoming application traffic or network traffic across multiple targets like EC2, containers, IP addresses.

Q47) What are the two types of access that you can provide when you are creating users?

Answer: Following are the two types of access that you can create.
  • Programmatic access
  • Console access

Q48) What are the benefits of auto scaling?

Answer: Following are the benefits of auto scaling
  • Better fault tolerance
  • Better availability
  • Better cost management

Q49) What are security groups?

Answer: Security groups acts as a firewall that contains the traffic for one or more instances. You can associate one or more security groups to your instances when you launch then. You can add rules to each security group that allow traffic to and from its associated instances. You can modify the rules of a security group at any time, the new rules are automatically and immediately applied to all the instances that are associated with the security group

Q50) What are shared AMI’s?

Answer: Shared AMI’s are the AMI that are created by other developed and made available for other developed to use. 

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