A Q&A platform built a strong network effect over a decade, becoming the default place programmers went for help. Yet a generative AI tool displaced much of its usage within about two years. Which analysis best explains why a strong network effect did not fully protect the platform?

A spreadsheet uses VLOOKUP to find a student’s name in a grade table, but the table is not sorted alphabetically. What is the most likely result?

What term does the lecture use for when a generative AI presents an incorrect answer as if it were correct?

A finance team wants to know how much a $15,000 loan would cost per month, given an interest rate and a loan term in years. Which Excel function’s core purpose is to compute a periodic loan payment amount?

Why do network effects create a barrier to entry for competitors?

How does a network effect differ from a congestion effect?

A spreadsheet designer needs to classify products into five price tiers instead of two, and finds that nesting IF functions inside each other is becoming hard to read. Which function is presented in lecture as a more readable alternative to deeply nested IFs?

The lecture uses the Target data breach to illustrate that security failures are often not purely technical. What was the deeper lesson drawn from that case?

In Linux, the top of the filesystem hierarchy is called the _______ directory.

Security policies and training are examples of ________ controls.