ISQS 2340 Exam 2 Review TTU- Mitchell Questions and Answers 100% Solved correctly

Blockchain security (Is it unbreakable?) - ️️Blockchain is protected by businessgrade cryptography, but no technology is 100% secure. And when large sums of money are involved, hackers will try to follow. So security concerns could also slow blockchain adoption. 51% rule Blockchains lineage (where it came from/ first used)? - ️️A block consists of multiple timestamped transactions • Multiple blocks are joined together in a chain • Nodes are connected devices that have a copy of the entire blockchain • The nodes are periodically synchronized to ensure consensus Examples of Google using data and analytics? - ️️At Google. decisions are based on data, analytics and scientific experimentation. Tried to answer the question of: Do managers matter?Determine the data to use (see what's available and what might be needed) • Performance reviews (top-down) and employee surveys (bottom-up) of managers • Looking for variability: Top and bottom quartiles • Analyze the data using statistical methods The abundance of data, and its implications and the potential benefits from analytics for businesses? - ️️Big Data - The sheer volume of data • Increased efficiency • Improved operations • Enhanced customer retention Purpose and usef What is a data-driven culture? - ️️A data-driven culture uses data-driven decision making ulness of Tableau and data visualization in general? - ️️Data visualization is not a personal preference, to be done "just in case some people are more visual." It is a necessity! • The previous slide is a classic example of how some insights can only be found through visualization. Remember the picture superiority effect: pictures are retained at much higher rates than words.A good visualization reduces the time to insight. Value creation with data analytics (think exchange transactions and uncertainties)? - ️️NO pie charts! Yes to scatterplots for exploring relationships. Yes to treemaps for relative proportions. Orient data so people can read it (better to have a horizontal bar chart than a vertical bar chart). Filled maps with only one measure, dash boarding what is blockchain technology? - ️️A blockchain is a distributed ledger of transactionsWhat are the main parts of blockchain technology? - ️️1. Users initiate transactions using their Digital Signatures. 2. Users Broadcast transactions to Nodes. 3. One or more Nodes begin validating each transaction. 4.Nodes aggregate validated transactions into Blocks. 5. Nodes broadcast blocks to each other. 6. Consensus protocol used. 7. Block reflecting "true state" is chained to prior Block.