Digital Wallets and Database Systems Quiz

What event significantly accelerated the use of digital wallets?

• Rise of cryptocurrencies

• Introduction of blockchain

• COVID-19 pandemic

• Launch of MetaMask

What does a digital wallet primarily store for blockchain transactions?

• Debit card numbers

• Encrypted private keys

• Passwords

• User IDs

Which app is provided by Globe Telecom and widely used in the Philippines?

• Coins.ph

• PayMaya

• GCash

• Maya

What feature distinguishes Coins.ph from other e-wallets?

• Physical card support

• Focus on crypto and traditional wallet services

• Exclusive local money transfer

• Cashback on purchases

What is the primary need for high-performance and scalable databases in e-wallet systems?

• To create advertisements

• To support simultaneous large-volume transactions

• To store passwords securely

• To manage offline wallet access

What database feature is essential for maintaining user balance accuracy?

• Blockchain mining

• Horizontal partitioning

• ACID compliance

• JSON storage

Which combination ensures instant processing of digital wallet transactions?

• Google Sheets + SQL

• File-based system + batch processing

• In-memory databases + streaming platforms like Apache Kafka

• Blockchain + cold storage

Which feature of advanced databases helps in regulatory compliance like GDPR or PCI DSS?

• Predictive modeling

• Data compression

• Audit logging and encryption

• Load balancing

Why is global availability important in e-wallet systems?

• To attract more investors

• To support multiple operating systems

• To ensure services are accessible 24/7 globally

• To provide free Wi-Fi access

What database technologies are useful for analytics and personalized services in e-wallets?

• Amazon Redshift and BigQuery

• Redis and MySQL

• Excel and Access

• Oracle Forms and Reports