10+ AWS Cloud Engineer Interview Questions and Answers for Freshers

There are 3 availability zones in Mumbai and 2 in Hyderabad regions.

• Mumbai region has 3 availability zones named ap-south-1a, ap-south-1b, and ap-south-1c.

• Hyderabad region has 2 availability zones named ap-south-2a and ap-south-2b.

• Availability zones are distinct locations within a region that are engineered to be isolated from failures in other availability zones.

I am familiar with various AWS services including compute, storage, databases, and networking solutions.

• EC2 (Elastic Compute Cloud) for scalable virtual servers.

• S3 (Simple Storage Service) for object storage and data backup.

• RDS (Relational Database Service) for managed relational databases like MySQL and PostgreSQL.

• Lambda for serverless computing and event-driven applications.

• VPC (Virtual Private Cloud) for creating isolated network environments.

No, files cannot be directly stored in S3 Glacier

• S3 Glacier is designed for long-term archival storage of data

• Files must first be stored in S3 Standard or S3 Infrequent Access before transitioning to Glacier

• Transitioning to Glacier incurs additional costs and retrieval times

Public IP is accessible from the internet while private IP is only accessible within a private network.

• Public IP is assigned by the internet service provider and is unique globally.

• Private IP is assigned by the network administrator and is unique within the private network.

• Public IP is used to communicate with devices outside the private network.

• Private IP is used to communicate within the private network.

• Examples of public IP include the IP address of a website or a server a...read more

Program to sort a list without using built-in functions

• Iterate through the list and compare each element with the rest to find the smallest element

• Swap the smallest element with the first element in the list

• Repeat the process for the remaining elements until the list is sorted

EC2 can access the network through Elastic Network Interfaces (ENIs) and Security Groups.

• EC2 instances are launched in a VPC and can be assigned one or more ENIs.

• ENIs provide a virtual network interface, including a private IP address, security groups, and MAC address.

• Security Groups act as a virtual firewall, controlling inbound and outbound traffic to the EC2 instance.

• EC2 instances can also be assigned Elastic IP addresses for static public IP addresses.

Active Directory can be installed using the Server Manager or PowerShell.

• Open Server Manager and select Add Roles and Features

• Select Active Directory Domain Services and follow the wizard

• Alternatively, use PowerShell command Install-WindowsFeature AD-Domain-Services

• Configure the domain and add users and groups as needed

Domain is a logical group of computers while forest is a collection of domains.

• Domain is a security boundary within which users, computers, and other resources are managed.

• Forest is a collection of one or more domains that share a common schema, configuration, and global catalog.

• Domains can be organized into a hierarchy, while forests cannot.

• Domains can have different security policies, while forests have a common security policy.

• Example: A company may have multiple domains f...read more

SSL (Secure Sockets Layer) and SSH (Secure Shell) are cryptographic protocols used to secure communication over a network.

• SSL is used to secure communication between a client and a server, commonly used for securing websites with HTTPS.

• SSH is used for secure remote access to servers, allowing users to securely log in and execute commands.

• Both SSL and SSH use encryption to protect data in transit, ensuring confidentiality and integrity of communication.

• SSL certificates are use...read more

Object-oriented programming concepts that help in organizing and structuring code for better reusability and maintainability.

• Encapsulation: Bundling data and methods that operate on the data into a single unit (class).

• Inheritance: Allowing a class to inherit properties and behavior from another class.

• Polymorphism: Ability to present the same interface for different data types.

• Abstraction: Hiding the complex implementation details and showing only the necessary features to the...read more