NFC Technology Overview
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Questions and Answers

What is the primary advantage of NFC compared to Bluetooth in crowded areas?

  • NFC can send and receive data.
  • NFC uses less power.
  • NFC has a shorter range.
  • NFC provides a higher degree of security. (correct)

    • Which of the following devices uses passive NFC technology?

  • A Bluetooth headset
  • An Apple smartwatch
  • A student ID card (correct)
  • An Android smartphone

    • What does SATA stand for?

  • Serial Advanced Transfer Architecture
  • Serial Advanced Technology Attachment (correct)
  • Standard Automatic Transfer Approach
  • Single Access Technology Adapter

    • What makes SATA operation faster than PATA?

    <p>SATA is less susceptible to interference.</p> Signup and view all the answers

    Which of the following statements is true about active NFC?

    <p>Active NFC is used in many Android and new Apple devices.</p> Signup and view all the answers

    What is the benefit of passive NFC devices?

    <p>They can function without an external power source.</p> Signup and view all the answers

    Which of the following describes how SATA transfers data?

    <p>SATA transfers data one bit at a time.</p> Signup and view all the answers

    To prepare a Bluetooth device for pairing, what is the first step?

    <p>Make the device discoverable.</p> Signup and view all the answers

    What does RAID stand for?

    <p>Redundant Array of Independent Disks</p> Signup and view all the answers

    Which RAID configuration provides the highest reliability?

    <p>RAID 1</p> Signup and view all the answers

    What is a key characteristic of RAID 0?

    <p>Interleaves data across multiple drives</p> Signup and view all the answers

    What is the main advantage of RAID 6 over RAID 5?

    <p>RAID 6 performs more parity computations.</p> Signup and view all the answers

    What is the main advantage of using RAID 5?

    <p>Performance through striping with parity for fault tolerance</p> Signup and view all the answers

    Why was the 'I' in RAID originally changed from 'Inexpensive' to 'Independent'?

    <p>To reflect its development in the market</p> Signup and view all the answers

    Which statement best describes the role of a GPU in a computer?

    <p>A GPU frees up the CPU by performing quick math calculations for graphics.</p> Signup and view all the answers

    Which of the following is true about integrated GPUs?

    <p>They share memory with the CPU's processor.</p> Signup and view all the answers

    What is RAID 10 a combination of?

    <p>RAID 1 and RAID 0</p> Signup and view all the answers

    Which RAID configuration is primarily focused on speed with some fault tolerance?

    <p>RAID 3</p> Signup and view all the answers

    What enables GPUs to handle a wide range of applications beyond graphics rendering?

    <p>Their flexibility and programmability.</p> Signup and view all the answers

    What are discrete GPUs known for compared to integrated GPUs?

    <p>They require more power.</p> Signup and view all the answers

    Which RAID configuration is generally not as popular as RAID 3?

    <p>RAID 4</p> Signup and view all the answers

    Which scenario is an example of utilizing GPU capabilities outside of gaming?

    <p>Performing deep learning tasks.</p> Signup and view all the answers

    What was the original purpose of designing GPUs?

    <p>To accelerate the rendering of 3D graphics.</p> Signup and view all the answers

    Which of the following statements about RAID 5 is incorrect?

    <p>RAID 5 can only protect against single drive failure.</p> Signup and view all the answers

    What is the purpose of an assembler in the program development process?

    <p>To translate assembly language into machine code</p> Signup and view all the answers

    Which of the following programming languages is considered a high-level language?

    <p>C</p> Signup and view all the answers

    During which step of the programming process is the program translated from high-level to assembly language?

    <p>Compilation</p> Signup and view all the answers

    What role does a linker play in the program development workflow?

    <p>Links all parts of the program together for execution</p> Signup and view all the answers

    What distinguishes a compiler from an interpreter?

    <p>Compilers translate high-level language into machine code whereas interpreters execute code directly</p> Signup and view all the answers

    Which of the following best describes assembly time?

    <p>The period when the assembler processes a program</p> Signup and view all the answers

    What is the primary function of a loader in the program execution process?

    <p>Load the executable machine code into memory</p> Signup and view all the answers

    In the development workflow, what is the first step after a user writes a program in a high-level language?

    <p>The program is compiled</p> Signup and view all the answers

    What type of language is machine language considered?

    <p>Low-level language</p> Signup and view all the answers

    What does the conversion process from assembly language to machine code involve?

    <p>Assembly</p> Signup and view all the answers

    Why are programs written in machine language not portable?

    <p>Each computer can only understand its specific machine language.</p> Signup and view all the answers

    Which of the following statements about machine language is true?

    <p>It consists of strings of numbers ultimately reduced to 1's and 0's.</p> Signup and view all the answers

    What is the role of a compiler in programming?

    <p>To convert high-level code into machine language.</p> Signup and view all the answers

    Which best describes assembly language?

    <p>A symbolic representation of machine code closely aligned with computer architecture.</p> Signup and view all the answers

    Why is machine language programming typically considered tedious?

    <p>It is not user-friendly and is prone to errors.</p> Signup and view all the answers

    Which statement is true about the execution of programs written in high-level languages?

    <p>They must be compiled or interpreted into machine language first.</p> Signup and view all the answers

    Study Notes

    NFC (Near Field Communication)

    • NFC is a short-range wireless communication technology allowing data exchange between devices within approximately 10 cm.
    • Higher security is offered by NFC due to its limited range compared to Bluetooth (up to 50m), making it suitable for crowded areas.
    • Two types of NFC exist:
      • Active NFC: Allows sending and receiving data, used in many Android and newer Apple devices.
      • Passive NFC: Can only send data, can operate without power (e.g., student ID cards transferring info to bus card readers).

    SATA (Serial Advanced Technology Attachment)

    • SATA is an interface for transferring data between a computer’s circuit board and storage devices, replacing the older PATA interface.
    • Operates using serial communication, transmitting one bit at a time; this reduces interference and enhances speed over PATA.
    • Offers simpler and slimmer cabling compared to parallel models.

    Bluetooth Device Pairing

    • To pair a Bluetooth device, make the device discoverable and follow the steps on a PC from Settings to connect.
    • Once paired, Bluetooth devices typically reconnect automatically when within range.

    RAID (Redundant Array of Independent Disks)

    • RAID setups increase performance, provide fault tolerance, or both through multiple drives controlled by a RAID controller.
    • Initially, "I" in RAID stood for "Inexpensive," later changed to "Independent"; used in SANs and personal computers.
    • Various RAID configurations include:
      • RAID 0: Stripes data across drives for performance without redundancy.
      • RAID 1: Mirrors data across two drives for maximum reliability but doubles drive usage.
      • RAID 3: Stripes data across three drives with parity for performance and safety.
      • RAID 5: Similar to RAID 3 but distributes parity across drives; RAID 6 offers more reliability with additional parity calculations.

    GPU (Graphics Processing Unit) Basics

    • GPUs are essential for rendering images and video in computers, aiding the CPU by performing quick calculations.
    • Integrated GPUs are built into the CPU and share memory, while discrete GPUs have dedicated video memory (VRAM).
    • Originally focused on 3D graphics rendering, GPUs now assist in AI, high-performance computing, and creative production.

    Computer Languages Overview

    • Machine Language: Low-level language understood by computers, represented in binary numbers; not portable across different systems.
    • Assembly Language: A low-level programming language closely aligned with machine code, requiring an assembler for conversion to executable code.
    • High-Level Language (HLL): Programming languages like C, FORTRAN, or Pascal that are more abstract and user-friendly, making programs less dependent on specific hardware.

    Program Development Procedure

    • A program is typically written in a high-level language like C.
    • The C compiler translates the program into assembly language, which is then converted to machine code by an assembler.
    • A linker combines all parts of the program for execution.
    • A loader loads the program into memory for execution.

    Compiler vs. Interpreter

    • A compiler translates complete source code into machine code, generating output files, while an interpreter translates code on-the-fly during execution.

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    Description

    Explore the fundamentals of Near Field Communication (NFC) in this quiz. Learn about its short-range wireless capabilities, security advantages over Bluetooth, and applications in crowded areas. Test your knowledge of this innovative communication technology.

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