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Computer Science Flashcards

7 cards from real EMSAT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.

Read the first 7 Computer Science flashcards as text

  1. Which data structure uses LIFO (Last In, First Out) ordering?

    Answer: Stack

    A stack follows LIFO order, meaning the last element added is the first to be removed.

  2. What is the output of the expression: 17 MOD 5?

    Answer: 2

    17 divided by 5 gives quotient 3 and remainder 2, so 17 MOD 5 = 2.

  3. Which of the following is a characteristic of an algorithm?

    Answer: It must have a finite number of steps

    An algorithm must terminate after a finite number of steps to produce a result.

  4. In a relational database, what does a primary key ensure?

    Answer: Each record is uniquely identified

    A primary key uniquely identifies each record in a database table, ensuring no duplicates.

  5. Which layer of the OSI model is responsible for routing packets between networks?

    Answer: Network Layer

    The Network Layer (Layer 3) handles logical addressing and routing of packets across networks.

  6. What does HTML stand for?

    Answer: Hyper Text Markup Language

    HTML stands for Hyper Text Markup Language, used to structure content on the web.

  7. Which of the following best describes an operating system?

    Answer: Software that manages hardware and software resources

    An operating system manages hardware resources and provides services for application software.

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Sources & references

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  1. emsat.moe.gov.ae — Test delivery, eligibility, time limit, retake fee, retake policy, score release, exam format, exam information · verified Oct 2026
  2. mohesr.gov.ae — Eligibility · verified Oct 2026