What protects data is blockchain like a sealed envelope.
","choices":[{"text":"Encryoption
","value":"A"},{"text":"Erasing
","value":"B"},{"text":"Copy pasting
","value":"C"},{"text":"Sharing publicly
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065169,"question":"How does blockchain help banks transfer money internationally
","choices":[{"text":"Makes it slower
","value":"A"},{"text":"Makes it faster and cheaper
","value":"B"},{"text":"Adds middlemen
","value":"C"},{"text":"Requires cash
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065168,"question":"Artists use blockchain to prove their digital art is original using.
","choices":[{"text":"Passowrds
","value":"A"},{"text":"Digital signatures /nfts
","value":"B"},{"text":"Paint
","value":"C"},{"text":"Usb drives
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065167,"question":"Whcih company supports blockchain networks usng clould services.
","choices":[{"text":"Amazon
","value":"B"},{"text":"Intstagram
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065166,"question":"What is one major challenge associated with smart contractss
","choices":[{"text":"They are too fast
","value":"A"},{"text":"Code errors can't be fixed easily
","value":"B"},{"text":"they are too simple
","value":"C"},{"text":"Everyone unde5stands them
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065164,"question":"Smart contracts are automatically executed when
","choices":[{"text":"Someone asks
","value":"A"},{"text":"Conditions are met
","value":"B"},{"text":"Time pases
","value":"C"},{"text":"Money is stolen
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065163,"question":"Cryptocurrencles works without which of the fllowing
","choices":[{"text":"Banks
","value":"A"},{"text":"Internet
","value":"B"},{"text":"Users
","value":"C"},{"text":"Code
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065162,"question":"What is bitcoin an example of
","choices":[{"text":"Saas
","value":"A"},{"text":"Cr7yptocurrency
","value":"B"},{"text":"Operating system
","value":"C"},{"text":"Game
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065161,"question":"Block chain can make elections more secure by
","choices":[{"text":"Allowign paper ballots
","value":"A"},{"text":"Making votes unchangeable
","value":"B"},{"text":"Letting anyone vote
","value":"C"},{"text":"Remong voters
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065160,"question":"What is brnefit of using blockchai for trackign producets.
","choices":[{"text":"Makes products cheapr
","value":"A"},{"text":"Prevetns fake goods
","value":"B"},{"text":"Increasespollution
","value":"C"},{"text":"Slows down delivery
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065159,"question":"How cna blockchain help in healthxcars.
","choices":[{"text":"Store patient records securely
","value":"A"},{"text":"Prit documents
","value":"B"},{"text":"Play videos
","value":"C"},{"text":"Share social media
","value":"D"},{"value":"E"}],"correctAnswer":1},{"id":1065158,"question":"Whcih of the followng is a key principle of blockchain
","choices":[{"text":"Centralizatiion
","value":"A"},{"text":"Decentralization
","value":"B"},{"text":"Single point failure
","value":"C"},{"text":"Manual updates
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065157,"question":"In blckchain , what is node?
","choices":[{"text":"a broken device
","value":"A"},{"text":"A participant in the networks
","value":"B"},{"text":"A passowrd
","value":"C"},{"text":"A deleted file
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065156,"question":"What ensures that everyone agrees before new data is added to the blockchain.
","choices":[{"text":"Random selection
","value":"A"},{"text":"Consensus
","value":"B"},{"text":"guessing
","value":"C"},{"text":"Voting by email
","value":"D"},{"value":"E"}],"correctAnswer":2},{"id":1065155,"question":"Once added, blckchan records cannot be changed. This property is called.
","choices":[{"text":"Flexcibility
","value":"A"},{"text":"Immutability
","value":"B"},{"text":"Scalability
","value":"C"},{"text":"Modifiability
","value":"D"},{"value":"E"}],"correctAnswer":2}]