Eleven hides her powers inside private variables but allows Mike to use them through getter methods. What OOP principle is this?

If Dustin writes multiple methods called signal() with different parameters to detect Upside Down creatures, this is an example of:

Vecna creates an abstract class Curse that defines haunt(). Which statement is true?

If Eleven overrides the attack() method of Human class with her own psychic powers, what concept is shown?

Hawkins Lab’s OS allows multiple kids to use arcade machines at the same time. What concept is this?

If Will’s process is waiting for I/O (like the lights to blink), which state is it in?

Dustin explains to Lucas that context switching happens when:

Eleven uses semaphores to control gate entry to the Upside Down. What problem do semaphores help solve?

Hopper finds that multiple tasks are stuck waiting forever for resources. What is this condition?

Dustin compares IP addresses to Hawkins house addresses. What layer of OSI uses IP?

Hopper uses TCP instead of UDP to call Joyce. Why?

If Vecna’s curse spreads like a broadcast in Hawkins, which layer does this happen in?

Eleven uses DNS to find Mike’s server. Which record maps a hostname to an IPv4 address?

Will sends a distress signal over email from the Upside Down. Which protocol is mainly used for email sending?

Each VictimID in Vecna’s curse table is unique. Which key is this?

Dustin notices redundant data in Hawkins DB, causing anomalies. Which process removes redundancy?

If Monsters table references Victims table using VictimID, what type of key is in Monsters

Eleven runs ROLLBACK after a failed experiment update. Which property of transactions is applied?

Which SQL command is used by Hopper to remove the Demogorgon table permanently?

Dustin saves his Stranger Things project with a snapshot. Which Git command is used?

Eleven wants to work on a new feature telekinesis. Which command creates a new branch?

Hopper uploads Hawkins Lab’s repo to GitHub. Which command is used?

Vecna downloads Eleven’s repo copy to his own system. Which Git command does this?

If Joyce checks recent changes in the repo, which command does she use?

Eleven stacks boxes to block Demogorgons. Removing boxes from the top follows which principle?

Will sends a signal from the Upside Down, and Hopper finds the shortest path to him. Which algorithm fits?

Dustin arranges Hawkins kids in sorted order and looks for Mike using Binary Search. What is the time complexity in worst case?

If Vecna’s curse spreads in levels outward (like BFS), which data structure is used internally?

Hopper stores unique victim names using a HashSet. What is the average time complexity of search?