Quizzes

Five or six questions each, one at a time, with an explanation after every answer. Your best score is kept in this browser, so you can see what you have covered and come back to beat it.

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APIs and testing

6 questionsWhat is an API?→6 questionsHTTP basics→6 questionsJSON basics→6 questionsYour first API call→6 questionsYour first mock server→6 questionsHow APIs know who you are→

Networking and SSH

6 questionsNetworks, addresses and ports→6 questionsSSH: sign in to another computer→6 questionsSSH keys→6 questionsSSH tunnels→6 questionsSecure your SSH server→6 questionsLab: your own SSH server→

Git and version control

6 questionsWhat Git is→6 questionsCommits→6 questionsBranches and merging→6 questionsRemotes→6 questionsConflicts and rebase→6 questionsUndo and stay safe→6 questionsGit lab→

Databases

6 questionsWhat is a database?→6 questionsSQL basics→6 questionsJoins and keys→6 questionsTransactions→6 questionsSafety and backups→6 questionsLab: explore a shop database→

Android and ADB

6 questionsWhat is ADB?→6 questionsADB essentials→5 questionsWireless debugging→6 questionsLogcat and crashes→6 questionsPermissions and safety→6 questionsDroidDeck lab→

AI and local models

6 questionsHow language models work→6 questionsRun models on your own computer→6 questionsAnswers from your documents (RAG)→6 questionsGateways and AI APIs→6 questionsTools and MCP→6 questionsUse AI safely→6 questionsAsk questions about your own documents→

Security and safe habits

6 questionsThreats in plain words→6 questionsPasswords and secrets→6 questionsSafe networks→6 questionsSafe installs→6 questionsScanning your code→6 questionsResponsible testing→6 questionsLab: Find the secrets→

Linux and the terminal

6 questionsShell basics→6 questionsWorking with files→6 questionsPermissions→6 questionsProcesses and ports→6 questionsLogs and pipes→6 questionsInstalling software→6 questionsLab: log detective→

Files, backups and recovery

6 questionsHow storage works→6 questionsBackups that work→6 questionsRecovering lost files→6 questionsMoving and sharing files→6 questionsArchives and discs→6 questionsPractise a recovery and a restore→

Images and media

6 questionsImages: pixels and formats→6 questionsCompression and quality→6 questionsVideo and audio→6 questionsDocuments and PDFs→6 questionsSharing on the web→6 questionsLab: make one photo fit everywhere→

Crypto wallets

6 questionsWhat is a wallet?→6 questionsTransactions and blocks→6 questionsNodes and privacy→6 questionsNetworks and practice→6 questionsBackups and safety→6 questionsLab: your first wallet, safely→

API testing guides

6 questionsAPI testing fundamentals→6 questionsWrite test cases→6 questionsFunctional testing→6 questionsNegative testing→6 questionsTesting authentication→6 questionsWorkflow testing→6 questionsData-driven testing→6 questionsTesting with mocks→6 questionsResilience testing→6 questionsLoad testing→6 questionsAutomating in CI→

API labs

6 questionsTodo API lab→6 questionsShop API lab→6 questionsFlaky Payments lab→6 questionsRecipes lab→

ApiWorkbench

6 questionsSend your first request→6 questionsVariables and environments→6 questionsTests without code→6 questionsCaptures: chain requests→6 questionsScripts→

Mock Studio

6 questionsYour first mock API→6 questionsEndpoints and paths→6 questionsResponse strategies→6 questionsDynamic templating→6 questionsLatency and faults→