Answer: 443
Explanation:
Port 443 will need to be enabled for secure transactions to go through because it is the default port for HTTPS which is the transfer protocol for secure communication.
This way your credit card transactions will be encrypted to ensure protection from those who would seek to steal your data and your money.
Explanation:
A centralized database (sometimes abbreviated CDB) is a database that is located, stored, and maintained in a single location.
Color could be use as a advantage visually representing something ,For example its help identify whats being presented through color depending on the object also if helps reveal its characteristics. The disadvantages are using color to visually representing info could be deceiving and also color has to works efficiently with your other senses to be 100% correct . Hope this helps