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    Home MCQ examination Jamb Computer-studies 2023

    Computer Studies 2023 Jamb Examination

    Computer Studies 2023 Jamb Examination
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    123456...8

    Question 31

    Evaluate $1011_2+122_4$, leaving your answer in base 10.
    Show explanation Expand Question

    Convert each number to base 10 first.

    10112 = 1 × 23 + 0 × 22 + 1 × 21 + 1 × 20 = 8 + 0 + 2 + 1 = 11

    1224 = 1 × 42 + 2 × 41 + 2 × 40 = 16 + 8 + 2 = 26

    Sum in base 10: 11 + 26 = 37

    Not clear enough?

    Question 32

    What part of the central processing unit coordinates other units and manages the computer resources ?
    Show explanation Expand Question
    The Control Unit (CU) of the CPU manages and coordinates all computer resources, directing the flow of data between the CPU, memory, and peripherals.
    Not clear enough?

    Question 33

    What does R stands for in the CRUD acronym ?
    Show explanation Expand Question
    In CRUD operations, 'R' stands for Retrieve, which refers to reading or accessing data from a database.
    Not clear enough?

    Question 34

    Which of these is not true about peer-to-peer network ?
    Show explanation Expand Question
    Peer-to-peer networks do not have dedicated servers and have equal peer computers. They typically have weaker security systems, so the statement about strong security is not true.
    Not clear enough?

    Question 35

    The Output will be a HIGH for any case when one or more inputs are one for a(an)
    Show explanation Expand Question
    An OR gate outputs HIGH (1) if at least one of its inputs is HIGH.
    Not clear enough?

    Question 36

    What type of booting does the computer go through when starting up from a powered down ?
    Show explanation Expand Question
    Cold booting occurs when a computer starts up from a completely powered-off state, as opposed to warm booting which is restarting the system without turning off the power.
    Not clear enough?

    Question 37

    The connection between two or more computers to share resources or allow electronic communication is called ?
    Show explanation Expand Question
    A network is a system of interconnected computers that can share resources, data, and allow electronic communication.
    Not clear enough?

    Question 38

    Which of the following is the standard keyboard layout ?
    Show explanation Expand Question
    QWERTY is the standard keyboard layout used widely in most computers and typewriters.
    Not clear enough?

    Question 39

    Analog, digital and hybrid computers are classification of computers based on
    Show explanation Expand Question
    Analog, digital, and hybrid computers are classified according to the type of data-handling technique they useā€”continuous for analog, discrete for digital, and both for hybrid.
    Not clear enough?

    Question 40

    Which of the following is not an application software
    Show explanation Expand Question
    Linux is an operating system, not an application software. MS Word, Corel Draw, and MacWrite are examples of application software.
    Not clear enough?
    123456...8

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