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Web developer

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18 questions · about 9 minutes · no timer

The test samples the available lessons in each path stage. Choose “Not sure yet” when you do not know an answer. You can go back and change choices before checking your result.

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Stage 1 · HTMLIn <h1>Hello!</h1>, which part is the closing tag?

Hello!<h1>The whole line</h1>Not sure yet

Stage 1 · HTMLA row holds one cell written as <td colspan="2">Hot only</td> in a table with two columns. What happens?

The browser adds an empty second cell next to itThe text Hot only is shown twiceThe table gets a third columnThe cell stretches across both columnsNot sure yet

Stage 1 · HTMLsizes="(max-width: 600px) 100vw, 50vw". The viewport is 1200 CSS pixels wide. What is the slot?

1200 CSS pixels600 CSS pixels50 CSS pixels100 CSS pixelsNot sure yet

Stage 2 · CSSWhich job does CSS do on a web page?

Styles its colours, sizes and spacingStores its files on a web serverHandles clicks and updates its contentDefines the page's content and structureNot sure yet

Stage 2 · CSSWhich rule applies at a viewport width of exactly 700px? @media (min-width: 700px) { … }

It does not apply: the width must be more than 700pxIt applies only after a reloadIt applies only on phonesIt applies: min-width means at least 700pxNot sure yet

Stage 2 · CSSOn a 60 Hz screen, about how long does the browser have to produce each frame?

16.7 ms1 second60 ms1 msNot sure yet

Stage 3 · JavaScriptWhere does JavaScript run?

In browsers and runtimes such as Node.jsIn browsers only, without server-side supportIn Chrome, but not in other browsersOn web servers, but not in browsersNot sure yet

Stage 3 · JavaScriptconst key = "color"; Which line reads the property whose name is stored in key?

cat["key"]cat.color()cat.keycat[key]Not sure yet

Stage 3 · JavaScriptWhat does fetch("/api/users/7") give back the moment it is called?

The user object, after waiting for the serverThe JSON text of the responseA promise that is still pendingNothing until the page reloadsNot sure yet

Stage 4 · TypeScriptWhat does TypeScript add to JavaScript?

Runtime checks on every inputA replacement JavaScript engineA type system for JavaScript valuesBrowser APIs for drawing interface elementsNot sure yet

Stage 4 · TypeScriptWhich of these can only be written with a type alias?

A name for the union number | stringA shape with an optional propertyA shape that extends another shapeA name for an object with a name propertyNot sure yet

Stage 4 · TypeScriptWhich setting sends the output to the dist folder?

"outDir": "dist""strict": true"target": "es2020""include": ["src"]Not sure yet

Stage 5 · Software engineeringWhich function will pytest collect and run as a test, if it sits in test_calc.py?

test_add()addTest()check_add()add()Not sure yet

Stage 5 · Software engineeringWhich request should a to-do app send to read the to-do with id 3, without changing anything?

POST /todos/3DELETE /todos/3PUT /todosGET /todos/3Not sure yet

Stage 5 · Software engineeringAda is logged in and tries to open Ben's inbox. The server refuses. Which check said no?

AuthenticationThe cookie's Secure flagHashingAuthorizationNot sure yet

Stage 6 · Databases and SQLWhat is a DBMS?

A spreadsheet format for cell valuesA disk controller that allocates physical storage sectorsSoftware that manages storage and access to dataOne table holding all an app's recordsNot sure yet

Stage 6 · Databases and SQLYou want only the drinks that took more than 5 in total. Which clause do you use?

HAVING SUM(price) > 5GROUP BY SUM(price) > 5ORDER BY SUM(price) > 5WHERE SUM(price) > 5Not sure yet

Stage 6 · Databases and SQLtenk1 has 345 pages and 10,000 rows. With the default settings (seq_page_cost 1.0, cpu_tuple_cost 0.01), what does EXPLAIN SELECT * FROM tenk1 print as the total cost?

445.008.30345.0010,345.00Not sure yet

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