Binary and Decimal Number Systems

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Questions and Answers

What is the binary equivalent of the decimal number 10?

  • 1010 (correct)
  • 1001
  • 1100
  • 1110

Which of the following statements best describes the significance of binary code in digital technology?

  • It is used for displaying text on screens.
  • It is the primary language that computers use to process information. (correct)
  • It is used for creating network diagrams.
  • It is a type of encryption for securing data.

Converting the binary number 1101 to decimal results in 13.

True (A)

In the context of binary numbers, what does each digit represent?

<p>a power of 2</p> Signup and view all the answers

In a network, a _______ is a device that forwards data packets between different networks.

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

Which type of network relies on radio waves to transmit data?

<p>Wireless network (B)</p> Signup and view all the answers

Wired networks generally offer higher speeds and more stable connections compared to wireless networks.

<p>True (A)</p> Signup and view all the answers

Name two hardware components commonly found in a network.

<p>Router, Switch</p> Signup and view all the answers

Which of the following is a disadvantage of wireless networks?

<p>Potential for interference (A)</p> Signup and view all the answers

A _________ network uses cell towers to provide internet access over a wide geographical area.

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

Match the decimal numbers to their binary equivalents:

<p>5 = 101 7 = 111 12 = 1100 15 = 1111</p> Signup and view all the answers

What is the decimal equivalent of the binary number 11001?

<p>25 (D)</p> Signup and view all the answers

A switch is a network device that connects different networks together, like connecting a home network to the internet.

<p>False (B)</p> Signup and view all the answers

Explain one advantage of using a wired network over a wireless network in a school computer lab.

<p>More consistent connection</p> Signup and view all the answers

In a simple network diagram, computers, printers, and servers are represented as ____.

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

Consider this word puzzle: 'A = 100001, B = 100010, C = 100011'. What does 'E' equal in binary?

<p>100101 (C)</p> Signup and view all the answers

The primary advantage of a mobile network is its fixed location, providing stable connections.

<p>False (B)</p> Signup and view all the answers

What is the primary function of a network interface card (NIC)?

<p>connect device to network</p> Signup and view all the answers

Which of the following is an example of a mobile network technology?

<p>4G LTE (A)</p> Signup and view all the answers

The process of converting information into binary code is called _____________.

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

Flashcards

What is Binary?

A base-2 numeral system that uses only two digits: 0 and 1.

What is Decimal?

A base-10 numeral system we use every day, with digits 0-9.

What is Decimal to Binary Conversion?

The process of changing a number from base-10 (decimal) to base-2 (binary).

What is Binary to Decimal Conversion?

The process of changing a number from base-2 (binary) to base-10 (decimal)

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Why is Binary significant in computing?

Binary is the fundamental language of computers, representing all data and instructions as 0s and 1s.

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What is a Network?

A connection of computers or devices that can communicate with each other.

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What is a Wired Network?

A network where devices are connected via physical cables, like Ethernet.

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What is a Wireless Network?

A network where devices connect without cables, using radio waves like Wi-Fi.

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What is a Mobile Network?

A network that allows devices to connect via cellular networks (3G, 4G, 5G), enabling internet access on the go.

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What are key hardware components of networks?

Examples include routers, switches, network interface cards (NICs), and cables.

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Why are networks important?

Networks facilitate communication, resource sharing, and access to information.

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What are the advantages and disadvantages of wired vs. wireless networks?

Wired networks offer more stability and are faster but lack mobility, while wireless networks provide mobility but might be less stable.

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What is a Network Diagram?

A visual representation of network components and their connections.

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Study Notes

  • Binary and decimal number systems form the foundation of how computers represent and manipulate data.
  • Understanding these systems is crucial for comprehending digital technology.

Binary Number System

  • Base-2 system that uses only two digits: 0 and 1.
  • Each digit in a binary number represents a power of 2 (e.g., 2^0, 2^1, 2^2, etc.).
  • Commonly used in computers due to the on/off states of transistors.

Decimal Number System

  • Base-10 system that uses ten digits: 0 through 9.
  • Each digit in a decimal number represents a power of 10 (e.g., 10^0, 10^1, 10^2, etc.).
  • Used in everyday calculations.

Converting Decimal to Binary

  • Divide the decimal number by 2 repeatedly, noting the remainders.
  • The binary number is formed by the remainders, read from bottom to top.
  • Example: Converting 13 to binary:
    • 13 ÷ 2 = 6, remainder 1
    • 6 ÷ 2 = 3, remainder 0
    • 3 ÷ 2 = 1, remainder 1
    • 1 ÷ 2 = 0, remainder 1
    • Binary equivalent: 1101

Converting Binary to Decimal

  • Multiply each binary digit by its corresponding power of 2.
  • Sum the results to get the decimal equivalent.
  • Example: Converting 1011 to decimal:
    • (1 × 2^3) + (0 × 2^2) + (1 × 2^1) + (1 × 2^0) = 8 + 0 + 2 + 1 = 11

Significance of Binary

  • Fundamental to how computers store and process information.
  • Used in all digital devices, from smartphones to supercomputers.
  • Binary code is used to represent instructions, text, images, and more.

Networks

  • Allow devices to communicate and share resources.
  • Essential for accessing the Internet, sharing files, and collaborating with others.

Types of Networks

  • Wired Networks: Use cables (e.g., Ethernet) to connect devices.
    • Provide stable and fast connections.
  • Wireless Networks: Use radio waves (e.g., Wi-Fi) to connect devices.
    • Offer convenience and mobility.
  • Mobile Networks: Use cellular technology (e.g., 4G, 5G) for wide-area connectivity.
    • Enable internet access on the go.

Key Hardware Components

  • Routers: Direct network traffic between devices and networks.
  • Switches: Connect devices within a local network.
  • Network Interface Cards (NICs): Enable devices to connect to a network.
  • Cables: Transmit data between devices in wired networks.
  • Wireless Access Points (WAPs): Provide wireless connectivity to devices.

Importance of Networks

  • Enable communication and collaboration.
  • Facilitate access to information and resources.
  • Support various applications, including email, social media, and online gaming.

Advantages and Disadvantages

  • Wired Networks:
    • Advantage: More reliable and faster.
    • Disadvantage: Less flexible and requires physical cables.
  • Wireless Networks:
    • Advantage: More flexible and convenient.
    • Disadvantage: Less secure and can be slower.
  • Mobile Networks:
    • Advantage: Enable connectivity on the go.
    • Disadvantage: Can be expensive and have coverage limitations.

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