𝗔𝗽𝗿𝗮𝘁𝗶𝗺* - 𝘚𝘳𝘫𝘢𝘯 𝘒𝘶𝘮𝘣𝘩 𝘏𝘢𝘤𝘬𝘢𝘵𝘩𝘰𝘯

Front

In C++, which of the following correctly describes what happens during template instantiation?

Back

Templates are compiled into specific code for each type when the template is actually used.

Front

Which statement about the volatile qualifier in C/C++ is correct? It makes a variable thread-safe by ensuring atomic operations, It prevents the compiler from optimizing out operations on the variable, It stores the variable in CPU registers for faster access, It stores the variable in CPU registers for faster access

Back

It prevents the compiler from optimizing out operations on the variable

Front

Which of these CSS selectors has the highest specificity? #header .navbar ul li a:hover, body header nav ul li a.active, header nav ul li a[href^="https"], li:nth-child(2n) a.external.link

Back

#header .navbar ul li a:hover

Front

When implementing a Service Worker for a Progressive Web App, which strategy is most appropriate for an online-first application that needs to work offline occasionally? Options: Cache only, Network only, Network first, falling back to cache, Stale-while-revalidate

Back

Network first, falling back to cache

Front

What will the following JavaScript code output to the console? (Single Correct)
Promise.resolve()
.then(() => {
console.log('A');
setTimeout(() => console.log('B'), 0);
})
.then(() => console.log('C'));
setTimeout(() => console.log('D'), 0);
console.log('E');
Options:
E, A, C, D, B
,
E, A, C, B, D
,
A, C, E, B, D
,
E, A, B, C, D

Back

E, A, C, D, B

Front

Which technology pairs would be most appropriate for implementing a decentralized application (dApp) with smart contracts? Options: MongoDB, Express.js, React, Node.js; Ethereum, IPFS, MetaMask, Web3.js; PostgreSQL, Django, Redux, Docker; Hyperledger Fabric, GraphQL, Angular, Kubernetes

Back

Ethereum, IPFS, MetaMask, Web3.js

Front

What is the primary difference between HTTP/2 and HTTP/3?

Back

HTTP/3 is based on QUIC protocol, which uses UDP instead of TCP

Front

Which of the following statements about Rust's ownership system are correct? (Multiple Correct)
Variables can have multiple mutable references simultaneously,
Data can have either one mutable reference or multiple immutable references,
Variables are automatically garbage collected when they go out of scope,
Ownership can be transferred (moved) from one variable to another

Back

Variables are automatically garbage collected when they go out of scope

Front

What is the time and space complexity of this algorithm?

Back

O(n) time, O(1) space

Front

What is an accurate description of the metaverse concept as understood in 2024?

Back

A set of interconnected virtual spaces that blend physical and digital realms