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  2. Multiple choice - Wikipedia

    en.wikipedia.org/wiki/Multiple_choice

    A multiple choice question, with days of the week as potential answers. Multiple choice (MC), [1] objective response or MCQ(for multiple choice question) is a form of an objective assessment in which respondents are asked to select only the correct answer from the choices offered as a list.

  3. Optical mark recognition - Wikipedia

    en.wikipedia.org/wiki/Optical_mark_recognition

    One of the most familiar applications of OMR is the use of #2 pencil (HB in Europe) bubble optical answer sheets in multiple choice question examinations. Students mark their answers, or other personal information, by darkening circles on a forms. The sheet is then graded by a scanning machine.

  4. Blockchain - Wikipedia

    en.wikipedia.org/wiki/Blockchain

    A blockchain has been described as a value-exchange protocol. [25] A blockchain can maintain title rights because, when properly set up to detail the exchange agreement, it provides a record that compels offer and acceptance. [citation needed] Logically, a blockchain can be seen as consisting of several layers: [26] infrastructure (hardware)

  5. Distributed ledger - Wikipedia

    en.wikipedia.org/wiki/Distributed_ledger

    The most common form of distributed ledger technology is the blockchain [citation needed] (commonly associated with the bitcoin cryptocurrency), which can either be on a public or private network. Infrastructure for data management is a common barrier to implementing DLT.

  6. Blockchain-based database - Wikipedia

    en.wikipedia.org/wiki/Blockchain-based_database

    To overcome these shortcomings, taking a traditional database and adding blockchain features to it sounds more feasible. [6] That's how the concept of blockchain-based database came into existence, which consists of multiple member clouds riding on two primary layers; the first one is Database Interface and the second one is the Blockchain ...

  7. Privacy and blockchain - Wikipedia

    en.wikipedia.org/wiki/Privacy_and_blockchain

    Blockchain has been acknowledged as a way to solve fair information practices, a set of principles relating to privacy practices and concerns for users. [5] Blockchain transactions allow users to control their data through private and public keys, allowing them to own it. [5] Third-party intermediaries are not allowed to misuse and obtain data. [5]

  8. Proof of stake - Wikipedia

    en.wikipedia.org/wiki/Proof_of_stake

    For a blockchain transaction to be recognized, it must be appended to the blockchain. In the proof of stake blockchain, the appending entities are named minters or validators (in the proof of work blockchains this task is carried out by the miners); [2] in most protocols, the validators receive a reward for doing so. [3]

  9. MCQ - Wikipedia

    en.wikipedia.org/wiki/MCQ

    Print/export Download as PDF; Printable version; In other projects Wikidata item; Appearance. move to sidebar hide. MCQ may refer to McQ, a 1974 crime action film ...