

𝗔𝗽𝗿𝗮𝘁𝗶𝗺* - 𝘚𝘳𝘫𝘢𝘯 𝘒𝘶𝘮𝘣𝘩 𝘏𝘢𝘤𝘬𝘢𝘵𝘩𝘰𝘯
Flashcard
•
Information Technology (IT)
•
University
•
Practice Problem
•
Hard
Wayground Content
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12 questions
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1.
FLASHCARD QUESTION
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.
2.
FLASHCARD QUESTION
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
3.
FLASHCARD QUESTION
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
4.
FLASHCARD QUESTION
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
5.
FLASHCARD QUESTION
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
6.
FLASHCARD QUESTION
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
7.
FLASHCARD QUESTION
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
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