|
| 1 | +{ |
| 2 | + "title": "Quiz: Lesson 3", |
| 3 | + "questions": [ |
| 4 | + { |
| 5 | + "question": "As well as console, which of the following are also known as a CLI?", |
| 6 | + "options": [ |
| 7 | + { |
| 8 | + "answer": "a terminal " |
| 9 | + }, |
| 10 | + { |
| 11 | + "answer": "a command line" |
| 12 | + }, |
| 13 | + { |
| 14 | + "answer": "a command prompt" |
| 15 | + }, |
| 16 | + { |
| 17 | + "answer": "all of them", |
| 18 | + "correct": true |
| 19 | + } |
| 20 | + ] |
| 21 | + }, |
| 22 | + { |
| 23 | + "question": "What has Open Zeppelin created?", |
| 24 | + "options": [ |
| 25 | + { |
| 26 | + "answer": "A No-Code smart contracts solution called Kashmir" |
| 27 | + }, |
| 28 | + { |
| 29 | + "answer": "A library of open-source smart contracts, widely tested and audited, to inherit by other developers", |
| 30 | + "correct": true |
| 31 | + }, |
| 32 | + { |
| 33 | + "answer": "Stairway: an NFT marketplace called for everyone to trade their assets" |
| 34 | + }, |
| 35 | + { |
| 36 | + "answer": "Led by a web3 founder, they created a lot of hard rock anthems" |
| 37 | + } |
| 38 | + ] |
| 39 | + }, |
| 40 | + { |
| 41 | + "question": "What line should we use to declare a smart contract called Animals in solidity?", |
| 42 | + "options": [ |
| 43 | + { |
| 44 | + "answer": "pragma solidity contract Animals {" |
| 45 | + }, |
| 46 | + { |
| 47 | + "answer": "smart contract Animals {" |
| 48 | + }, |
| 49 | + { |
| 50 | + "answer": "contract Animals {", |
| 51 | + "correct": true |
| 52 | + }, |
| 53 | + { |
| 54 | + "answer": "solidity 0.8.12 contract Animals {" |
| 55 | + } |
| 56 | + ] |
| 57 | + }, |
| 58 | + { |
| 59 | + "question": "What does msg.value hold in a function call?", |
| 60 | + "options": [ |
| 61 | + { |
| 62 | + "answer": "A message passed to a function from the sender account" |
| 63 | + }, |
| 64 | + { |
| 65 | + "answer": "The native token balance of the account that called a payable function" |
| 66 | + }, |
| 67 | + { |
| 68 | + "answer": "The address of the message sender account" |
| 69 | + }, |
| 70 | + { |
| 71 | + "answer": "The amount of native token sent to a payable function", |
| 72 | + "correct": true |
| 73 | + } |
| 74 | + ] |
| 75 | + }, |
| 76 | + { |
| 77 | + "question": "What does msg.sender hold in a function call?", |
| 78 | + "options": [ |
| 79 | + { |
| 80 | + "answer": "A message passed to a function from the sender account" |
| 81 | + }, |
| 82 | + { |
| 83 | + "answer": "The native token balance of the account that called a payable function" |
| 84 | + }, |
| 85 | + { |
| 86 | + "answer": "The address of the account that called a function", |
| 87 | + "correct": true |
| 88 | + }, |
| 89 | + { |
| 90 | + "answer": "The amount of native token sent to a payable function" |
| 91 | + } |
| 92 | + ] |
| 93 | + }, |
| 94 | + { |
| 95 | + "question": "In a smart contract, override is a keyword to …", |
| 96 | + "options": [ |
| 97 | + { |
| 98 | + "answer": "… tell the EVM you need to change a read-only or constant state variable" |
| 99 | + }, |
| 100 | + { |
| 101 | + "answer": "… replace a function from an inherited contract", |
| 102 | + "correct": true |
| 103 | + }, |
| 104 | + { |
| 105 | + "answer": "… replace a specific value from a variable in memory" |
| 106 | + }, |
| 107 | + { |
| 108 | + "answer": "… replace a specific value from a variable in storage" |
| 109 | + } |
| 110 | + ] |
| 111 | + }, |
| 112 | + { |
| 113 | + "question": "What if the memory keyword used for?", |
| 114 | + "options": [ |
| 115 | + { |
| 116 | + "answer": "To tell the EVM we need to allocate an exact number of slot from memory" |
| 117 | + }, |
| 118 | + { |
| 119 | + "answer": "To specify a parameter or local variable is stored in memory instead of storage", |
| 120 | + "correct": true |
| 121 | + }, |
| 122 | + { |
| 123 | + "answer": "It is a keyword to let the EVM memorize a specific value we will be using frequently" |
| 124 | + }, |
| 125 | + { |
| 126 | + "answer": "To specify the total amount of memory our contract will be using" |
| 127 | + } |
| 128 | + ] |
| 129 | + }, |
| 130 | + { |
| 131 | + "question": "What is require( ... ) used for?", |
| 132 | + "options": [ |
| 133 | + { |
| 134 | + "answer": "To tell solidity all the libraries our contract requires" |
| 135 | + }, |
| 136 | + { |
| 137 | + "answer": "It is a keyword to list all the requirements a parameter must meet to be valid" |
| 138 | + }, |
| 139 | + { |
| 140 | + "answer": "It is a solidity function to throw an exception if a certain condition is not met", |
| 141 | + "correct": true |
| 142 | + }, |
| 143 | + { |
| 144 | + "answer": "It is a way to declare how much native tokens a function requires to work" |
| 145 | + } |
| 146 | + ] |
| 147 | + }, |
| 148 | + { |
| 149 | + "question": "What is the word payable used for?", |
| 150 | + "options": [ |
| 151 | + { |
| 152 | + "answer": "A modifier for addresses variable to use the .transfer() and .send() functions with them" |
| 153 | + }, |
| 154 | + { |
| 155 | + "answer": "A keyword in a function declaration to let the function receive native tokens" |
| 156 | + }, |
| 157 | + { |
| 158 | + "answer": "A keyword for functions and addresses so they can receive native tokens into the contract" |
| 159 | + }, |
| 160 | + { |
| 161 | + "answer": "All of the above", |
| 162 | + "correct": true |
| 163 | + } |
| 164 | + ] |
| 165 | + }, |
| 166 | + { |
| 167 | + "question": "What is a private key?", |
| 168 | + "options": [ |
| 169 | + { |
| 170 | + "answer": "A secret key that has privilege access to certain functions in a contract" |
| 171 | + }, |
| 172 | + { |
| 173 | + "answer": "A key to access private variables in a smart contract" |
| 174 | + }, |
| 175 | + { |
| 176 | + "answer": "A key that gives total access to whomever holds it to have **full control** of an account and its assets", |
| 177 | + "correct": true |
| 178 | + }, |
| 179 | + { |
| 180 | + "answer": "A key that is not accessible from another contract" |
| 181 | + } |
| 182 | + ] |
| 183 | + }, |
| 184 | + { |
| 185 | + "question": "In which cases can we share our private key or seed phrase?", |
| 186 | + "options": [ |
| 187 | + { |
| 188 | + "answer": "Anytime, they are not important as long as i have my address" |
| 189 | + }, |
| 190 | + { |
| 191 | + "answer": "Only to friends and/or family" |
| 192 | + }, |
| 193 | + { |
| 194 | + "answer": "Only when I login into a webpage or service" |
| 195 | + }, |
| 196 | + { |
| 197 | + "answer": "**Never**, **absolutely never**, **to no-one**. I acknowledge that if I share my private key, whomever gets it can withdraw absolutely every asset from my address and sign documents on my behalf ", |
| 198 | + "correct": true |
| 199 | + } |
| 200 | + ] |
| 201 | + } |
| 202 | + ] |
| 203 | +} |
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