All questions of Computer Abbreviations for SSC CGL Exam

Operating System commonly used in ATMs
ATMs (Automated Teller Machines) typically run on specialized operating systems to ensure security, reliability, and stability. One of the most commonly used operating systems in ATMs is Microsoft Windows XP.

Reasons for using Microsoft Windows XP in ATMs
- **Compatibility**: Windows XP is compatible with a wide range of hardware and software, making it easier for ATM manufacturers to integrate various components.
- **Security**: Despite being an older operating system, Windows XP can still receive security updates from Microsoft for a fee, which is crucial for protecting sensitive financial data.
- **Reliability**: Windows XP is known for its stability and performance, which is essential for ATMs to function smoothly without any downtime.
- **Familiarity**: Many ATM software developers are already familiar with Windows XP, making it easier to develop and maintain ATM software.
In conclusion, while newer operating systems like Windows 10 are becoming more popular in modern ATMs, Windows XP remains a common choice due to its compatibility, security, reliability, and familiarity in the industry.

Primary Purpose of an ATM
The primary purpose of an Automated Teller Machine (ATM) is encapsulated in option 'B': it enables customers to access their bank accounts and perform transactions without visiting a bank branch.
Key Functions of ATMs:
- Account Access: ATMs allow customers to check their account balances, which provides them with real-time information about their financial status.
- Cash Withdrawal: One of the most common uses of ATMs is for cash withdrawals. Customers can withdraw cash at their convenience, making banking more accessible.
- Deposit Handling: Many ATMs now accept deposits, allowing customers to add funds to their accounts without needing to enter a bank branch.
- Fund Transfers: Customers can transfer money between their accounts or to other accounts, facilitating quick and easy transactions.
- Bill Payments: Some ATMs offer the option to pay bills, providing a one-stop solution for various financial needs.
Benefits of Using ATMs:
- Convenience: ATMs are available 24/7, giving customers the flexibility to manage their finances at any time.
- Reduced Wait Times: By using an ATM, customers can avoid long queues at bank branches, saving time.
- Widespread Availability: ATMs are located in numerous places, including shopping centers, airports, and gas stations, making banking services more accessible.
In summary, ATMs serve as a crucial bridge between traditional banking and modern convenience, offering various services that empower customers to manage their finances efficiently without the need to visit a physical bank.

The PIN (Personal Identification Number) is used in ATM transactions to authenticate the customer and ensure the security of financial transactions. It acts as a security measure to prevent unauthorized access to the customer's bank account.

The security feature in ATMs known as "Timeout" cancels a transaction if the customer fails to enter the PIN within a stipulated time. This feature helps prevent unauthorized access to the ATM in case the user abandons the transaction.

The Secure Crypto Processor in a modern ATM is used to ensure the secure transmission and reception of data between the ATM and the bank's computer network. It enhances the security of ATM transactions.

The Web Camera in an ATM is used to capture pictures and videos for security purposes. These images and videos are recorded and can be used to monitor and deter fraudulent activities at the ATM.

If a customer fails to enter the correct PIN within 3 attempts at an ATM, the customer's card will be disabled for the next 24 hours. This is a security feature designed to prevent unauthorized usage of ATM cards.

The Receipt Printer in an ATM is responsible for providing a printed record of the transaction, which includes details such as the transaction amount, date, and time. This receipt serves as proof of the transaction for the customer.

The Card Reader is responsible for identifying the customer when using an ATM. It reads the information encoded in the magnetic strip or chip of the ATM card, which contains all the necessary customer details for processing transactions.

The encryption algorithm commonly used to secure PIN numbers entered by customers at ATMs is DES 3 (Data Encryption Standard 3). This ensures that the PIN remains confidential and cannot be easily intercepted by unauthorized individuals.