what is EC2?
Amazon EC2 (Elastic Compute Cloud) is a cloud service that provides on‑demand, scalable virtual servers—called EC2 instances—allowing you to run applications without buying physical hardware. It offers hundreds of instance types, flexible pricing (On‑Demand, Spot, Savings Plans), and full control over compute, storage, and networking resources
Explain about AMI.
An Amazon Machine Image (AMI) is a template containing the software configuration (operating system, application server, and applications) required to launch an Amazon EC2 instance. You cannot launch an EC2 instance without specifying one.
- Every EC2 instance, whether one or thousands, starts as a clone of the selected AMI.
- Every AMI packages a root volume template, launch permissions, and a block device mapping.
- AMIs exist in a single AWS Region and must be explicitly copied to be used in another.
- AMIs are created, registered, copied, and deregistered. Deregistering does not automatically delete the underlying EBS snapshot.
- AMIs come from Amazon, the AWS Marketplace, the community, or your own custom build
Define Instance type.
IDefine Instance types refer to the various configurations of virtual servers available in Amazon EC2 (Elastic Compute Cloud). These instance types are designed with different resource combinations to optimize performance for various applications.
- General Purpose Instances: Suitable for web servers, code repositories, and small-to-medium databases.
- Compute Optimized Instances: Ideal for compute-bound applications like batch processing and media transcoding.
- Memory Optimized Instances: Designed for workloads that process large datasets in memory, such as in-memory databases and data analytics.
- Storage Optimized Instances: Best for high-throughput databases and data processing.
- Accelerated Computing Instances: Utilize hardware accelerators for tasks like floating-point calculations and graphics processing.
For more detailed specifications and naming conventions, you can refer to the official AWS documentation here.
Is it necessary to enhance key pair? How?
Enhancing key pairs is necessary to protect against potential threats and vulnerabilities. Here are some key practices to enhance key pairs:
What is security group?
A security group is a collection of rules or accounts used to manage access and permissions, either for network traffic in cloud environments or for user and resource permissions in IT systems.
تحميل المزيد من الأسئلة