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8 Top AWS services before you learn read today

AWS provides various services. This post gives clear understanding on AWS top services. Not only for traditional services, it also offer services for Mobile  IoS and Android Os.


Aws Service catalog helps organizations to manage their IT services.
List of Top AWS  ServicesEC2LambdaS3DynamoDBIAMAmazon CognitioDevice FarmMobile analyticsSNS AWS EC2 Instance EC2: Amazon Elastic Compute Cloud (EC2) provides secure, scalable, on-demand hardware virtualization in the cloud.
Using Amazon EC2 eliminates the need to invest in server hardware up front so that users can focus on, develop, and deploy applications faster. 
EC2 instances come in various hardware configurations and include an operating system.

Lambda Function in AWS AWS Lambda lets users run snippets of code without provisioning an infrastructure. 
This service is billed on a pay-as-you-go model, with users only paying for the execution time of their lambda code. 
There is no charge when code is not running. Lambda code can be set up to…

Different Types Of Payment Cards awesome list people being used

The bank or plastic cards are many in the financial transactions people are using. This post tells you about all the payment cards being used in the financial world with some brief description. The below is the list of credit or payment cards of different types.
different credit cards

Top plastic cards being used in payments

  • The purpose o this card is to buy any item within the limit prescribed by banks to the cardholder. These cards can have both Magnetic stripe and Chip cards.
  • Nowadays all banks are issuing credit cards with CHIP and PIN. After entering the PIN by the cardholder, then transaction starts for further processing.

Types of Credit cards

  • Secure credit cards: Cardholder deposits a certain amount of money. When the cardholder goes unpaid, then the card issuer pay from it. Credit Union Cards: 
  • The private Credit Union owners issue credit cards. They usually charge less than what banks will charge Pre-paid cards: They technically equal to Debit cards. They pre-loaded with a certain amount, that amount, you can use your cards 

Debit (ATM, Cash) card

  • It is a relatively new method of payment. It is different from a credit card because the debit cardholder pays with the money available in their bank account, which is debited immediately in real time. 
  • A debit card seems to be more dangerous compared to a credit card because the debit card is directly linked to the bank checking account and usually allows ATM cash withdrawals. 
  • On the other hand, it is more protected by the required two-factor authentication (PIN number plus card itself). The real dangerous element of many branded debit cards is that they can be processed as credit cards, without entering the PIN.

Offline-Debit Cards

They do not require a PIN. Also, these cards differ from normal Debit Cards.

The Gift card. 

  1. It is similar to a debit card but usually does not have the protection provided by a PIN. The gift card is not linked to a bank account and normally "contains" fixed amounts of funds. 
  2. The card itself does not hold any financial information—the point-of-sale (POS) terminal communicates with the gift card provider during payment transactions in order to get authorization. 
  3. Gift cards are less dangerous than credit and debit cards because only fixed, often very limited, amounts of money can be stolen. 
Also read: Credit cards domain knowledge

The fleet (or proprietary)

  • This card is similar to a credit card but can be used only at particular locations (usually gas stations and convenience stores) and for purchasing only limited types of merchandise (such as fuel and other automobile items). 
  • Fleet cards, even though often issued by major card brands, are less interesting to "bad guys" because they cannot be used for ATM withdrawal, online shopping, or purchases in department or grocery stores.

Co-brand cards

  • A co-branded card is a retail merchant credit card that is issued in partnership with a specific network processor. 
  • Co-branded cards are branded with the logo of the network processor and retailer. 

A private label credit card

It is a store-branded credit card that is intended for use at a specific store.
A private label credit card is a type of revolving credit plan managed by a bank or commercial finance company for either retail or wholesale manufacturers, such as department and specialty stores

Cash Cards

These are Debit cards, Payroll cards, Gift cards, and Pre-paid cards. The credit cards do not come under Cash Cards.

Closed Loop Cards

These cards have imprinted particular company logo. You can only utilize these cards only in that company. These cards do not contain Master or Visa cards logos

References:

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Hyperledger Fabric Real Interview Questions Read Today

I am practicing Hyperledger. This is one of the top listed blockchains. This architecture follows R3 Corda specifications. Sharing the interview questions with you that I have prepared for my interview.

Though Ethereum leads in the real-time applications. The latest Hyperledger version is now ready for production applications. It has now become stable for production applications.
The Hyperledger now backed by IBM. But, it is still an open source. These interview questions help you to read quickly. The below set of interview questions help you like a tutorial on Hyperledger fabric. Hyperledger Fabric Interview Questions1). What are Nodes?
In Hyperledger the communication entities are called Nodes.

2). What are the three different types of Nodes?
- Client Node
- Peer Node
- Order Node
The Client node initiates transactions. The peer node commits the transaction. The order node guarantees the delivery.

3). What is Channel?
A channel in Hyperledger is the subnet of the main blockchain. You c…