{dev}

How to install VirtualBox Guest additions on Centos7.x

Posted on April 2, 2021April 2, 2021 by Frederick Alvarez

As root execute the following code

Jenkins not working but the process is running

Posted on March 24, 2021March 24, 2021 by Frederick Alvarez

The service appears to be up but when you attempt to login you get Check out the log files Notice

Blockchain Basics & Cryptography

Posted on March 21, 2021March 21, 2021 by Frederick Alvarez

Bitcoin – Technical Features Cryptographic Hash Function Timestamped Append-only Logs (Blocks) Block Header & Merkle Tree Asymmetric Cryptography & Digital

Money, Ledgers, & Bitcoin

Posted on March 21, 2021March 21, 2021 by Frederick Alvarez

Fiat Currency Social & Economic Consensus. Represented by Central Bank Liabilities & Commercial Bank Deposits. Relies upon System of Ledgers

Difference between functional and non-functional requirements in software

Posted on March 14, 2021March 14, 2021 by Frederick Alvarez

Functional Requirements Functional requirements capture the intended behavior of the system. This behavior may be expressed asservices, tasks, or functions

UML Diagrams in Architectures

Posted on March 11, 2021March 11, 2021 by Frederick Alvarez

Solution Architecture Element UML Diagram Functional Requirement Use Case Diagram Structural Elements, Composition Class Diagram, Component Diagram Structural Elements, Collaboration