NFC Technology Overview

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?

SATA is less susceptible to interference. Signup and view all the answers

Which of the following statements is true about active NFC?

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

What is the benefit of passive NFC devices?

They can function without an external power source. Signup and view all the answers

Which of the following describes how SATA transfers data?

SATA transfers data one bit at a time. Signup and view all the answers

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

Make the device discoverable. Signup and view all the answers

What does RAID stand for?

Redundant Array of Independent Disks Signup and view all the answers

Which RAID configuration provides the highest reliability?

RAID 1 Signup and view all the answers

What is a key characteristic of RAID 0?

Interleaves data across multiple drives Signup and view all the answers

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

RAID 6 performs more parity computations. Signup and view all the answers

What is the main advantage of using RAID 5?

Performance through striping with parity for fault tolerance Signup and view all the answers

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

To reflect its development in the market Signup and view all the answers

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

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

Which of the following is true about integrated GPUs?

They share memory with the CPU's processor. Signup and view all the answers

What is RAID 10 a combination of?

RAID 1 and RAID 0 Signup and view all the answers

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

RAID 3 Signup and view all the answers

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

Their flexibility and programmability. Signup and view all the answers

What are discrete GPUs known for compared to integrated GPUs?

They require more power. Signup and view all the answers

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

RAID 4 Signup and view all the answers

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

Performing deep learning tasks. Signup and view all the answers

What was the original purpose of designing GPUs?

To accelerate the rendering of 3D graphics. Signup and view all the answers

Which of the following statements about RAID 5 is incorrect?

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

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

To translate assembly language into machine code Signup and view all the answers

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

C Signup and view all the answers

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

Compilation Signup and view all the answers

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

Links all parts of the program together for execution Signup and view all the answers

What distinguishes a compiler from an interpreter?

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

Which of the following best describes assembly time?

The period when the assembler processes a program Signup and view all the answers

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

Load the executable machine code into memory 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?

The program is compiled Signup and view all the answers

What type of language is machine language considered?

Low-level language Signup and view all the answers

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

Assembly Signup and view all the answers

Why are programs written in machine language not portable?

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

Which of the following statements about machine language is true?

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

What is the role of a compiler in programming?

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

Which best describes assembly language?

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

Why is machine language programming typically considered tedious?

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

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

They must be compiled or interpreted into machine language first. 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.