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Network and Internet Overview: The internet is a vast interconnected network of networks, enabling services like the web, email, and file sharing. Wide area networks (WAN) play a crucial role in connecting remote locations, with the internet being the largest WAN globally. The growth of internet users and connected devices has been exponential, leading to the emergence of the Internet of Things (IoT).
2/25/2023
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This page delves into the technical aspects of internet addressing and data transmission methods, focusing on IPv4 addressing and the concepts of circuit and packet switching.
Vocabulary: IPv4 (Internet Protocol version 4) addresses are unique identifiers assigned to devices on a network, consisting of four 8-bit numbers (0-255) separated by dots.
Example: An IPv4 address might look like this: 72.129.214.32
It's worth noting that newer IPv6 addresses use 128-bit numbers represented in hexadecimal format to accommodate the growing number of internet-connected devices.
Circuit Switching vs. Packet Switching
Circuit Switching:
Packet Switching:
Definition: Packet switching is a method of data transmission where files are broken into smaller packets, each containing routing and sequencing information, allowing for efficient network utilization.
Packet headers include:
Highlight: Packet switching allows data to flow through different routes on the internet, optimizing network resources and improving efficiency.
The recipient computer reassembles the packets upon arrival, checking for errors and requesting retransmission of corrupt packets if necessary. This method ensures reliable and efficient data transmission across the complex network infrastructure of the internet.
This page explores the fundamental components of network infrastructure and the Domain Name System (DNS), which are crucial for the functioning of the internet.
Network Nodes and Routers
Vocabulary: Nodes are points on a network diagram, with routers being specialized nodes that direct data packets from one location to another.
Domain Name System (DNS)
The DNS is a hierarchical naming system for computers, services, or other resources connected to the internet. It translates human-readable domain names into IP addresses.
Example: The domain name "google.co.uk" corresponds to a specific IP address.
DNS Servers:
Highlight: The DNS allows users to access websites using easy-to-remember names instead of numerical IP addresses, greatly enhancing the user experience of the internet.
Dynamic IP Addresses
Home devices typically use dynamic IP addresses, which can change when:
Network Interface Cards (NICs)
NICs are essential hardware components in networked devices:
Definition: A Network Interface Card (NIC) is a hardware component that enables a device to connect to a network, facilitating the sending and receiving of data.
Understanding these components and systems is crucial for comprehending how data is transmitted and accessed across the global internet infrastructure.
This page focuses on Media Access Control (MAC) addressing, a crucial aspect of network communication at the hardware level.
Definition: A Media Access Control (MAC) address is a unique identifier assigned to network interface controllers (NICs) for use as a network address in communications within a network segment.
Key points about MAC addresses:
Highlight: Unlike IP addresses, which can change, the MAC address of a NIC is unique and permanent.
Role of MAC Addresses in Network Communication
When you request a web page:
Example: A smartphone typically has two different MAC addresses: one for Wi-Fi and one for Bluetooth.
Understanding MAC addressing is crucial for network professionals as it plays a fundamental role in local network communications and helps in troubleshooting network issues.
Vocabulary: Network Interface Controller (NIC) - A hardware component that connects a device to a network, often integrated into the device's motherboard in modern systems.
The use of MAC addresses in conjunction with IP addresses enables efficient and accurate data transmission across both local and wide area networks, forming the backbone of internet communication protocols.
The internet is a complex system of interconnected networks that supports various services and technologies. This page introduces key concepts related to internet infrastructure and its evolution.
Definition: The internet is a collection of interconnected networks that enables services such as the web, email, and file sharing.
Vocabulary: The World Wide Web (WWW) is an information system of interlinked web pages and resources accessible through web browsers, utilizing HTTP for data transmission.
Wide Area Networks (WAN) play a crucial role in the internet's structure. WANs connect remote locations using various technologies:
Highlight: The internet is considered the largest WAN in the world, connecting numerous organizational networks across geographical locations.
The growth of the internet has been remarkable:
Example: The Internet of Things (IoT) has contributed significantly to this growth. By 2020, over 31 billion IoT devices were connected to the internet, including mobile devices, parking meters, smart meters, cars, kitchen appliances, and even cat trackers.
Definition: The Internet of Things (IoT) refers to the network of "smart" devices connected over the internet, allowing them to collect and exchange data.
This exponential growth in connectivity has transformed how we interact with technology and each other, paving the way for innovative applications and services across various sectors.
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Network and Internet Overview: The internet is a vast interconnected network of networks, enabling services like the web, email, and file sharing. Wide area networks (WAN) play a crucial role in connecting remote locations, with the internet being the largest WAN globally. The growth of internet users and connected devices has been exponential, leading to the emergence of the Internet of Things (IoT).
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This page delves into the technical aspects of internet addressing and data transmission methods, focusing on IPv4 addressing and the concepts of circuit and packet switching.
Vocabulary: IPv4 (Internet Protocol version 4) addresses are unique identifiers assigned to devices on a network, consisting of four 8-bit numbers (0-255) separated by dots.
Example: An IPv4 address might look like this: 72.129.214.32
It's worth noting that newer IPv6 addresses use 128-bit numbers represented in hexadecimal format to accommodate the growing number of internet-connected devices.
Circuit Switching vs. Packet Switching
Circuit Switching:
Packet Switching:
Definition: Packet switching is a method of data transmission where files are broken into smaller packets, each containing routing and sequencing information, allowing for efficient network utilization.
Packet headers include:
Highlight: Packet switching allows data to flow through different routes on the internet, optimizing network resources and improving efficiency.
The recipient computer reassembles the packets upon arrival, checking for errors and requesting retransmission of corrupt packets if necessary. This method ensures reliable and efficient data transmission across the complex network infrastructure of the internet.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page explores the fundamental components of network infrastructure and the Domain Name System (DNS), which are crucial for the functioning of the internet.
Network Nodes and Routers
Vocabulary: Nodes are points on a network diagram, with routers being specialized nodes that direct data packets from one location to another.
Domain Name System (DNS)
The DNS is a hierarchical naming system for computers, services, or other resources connected to the internet. It translates human-readable domain names into IP addresses.
Example: The domain name "google.co.uk" corresponds to a specific IP address.
DNS Servers:
Highlight: The DNS allows users to access websites using easy-to-remember names instead of numerical IP addresses, greatly enhancing the user experience of the internet.
Dynamic IP Addresses
Home devices typically use dynamic IP addresses, which can change when:
Network Interface Cards (NICs)
NICs are essential hardware components in networked devices:
Definition: A Network Interface Card (NIC) is a hardware component that enables a device to connect to a network, facilitating the sending and receiving of data.
Understanding these components and systems is crucial for comprehending how data is transmitted and accessed across the global internet infrastructure.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page focuses on Media Access Control (MAC) addressing, a crucial aspect of network communication at the hardware level.
Definition: A Media Access Control (MAC) address is a unique identifier assigned to network interface controllers (NICs) for use as a network address in communications within a network segment.
Key points about MAC addresses:
Highlight: Unlike IP addresses, which can change, the MAC address of a NIC is unique and permanent.
Role of MAC Addresses in Network Communication
When you request a web page:
Example: A smartphone typically has two different MAC addresses: one for Wi-Fi and one for Bluetooth.
Understanding MAC addressing is crucial for network professionals as it plays a fundamental role in local network communications and helps in troubleshooting network issues.
Vocabulary: Network Interface Controller (NIC) - A hardware component that connects a device to a network, often integrated into the device's motherboard in modern systems.
The use of MAC addresses in conjunction with IP addresses enables efficient and accurate data transmission across both local and wide area networks, forming the backbone of internet communication protocols.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The internet is a complex system of interconnected networks that supports various services and technologies. This page introduces key concepts related to internet infrastructure and its evolution.
Definition: The internet is a collection of interconnected networks that enables services such as the web, email, and file sharing.
Vocabulary: The World Wide Web (WWW) is an information system of interlinked web pages and resources accessible through web browsers, utilizing HTTP for data transmission.
Wide Area Networks (WAN) play a crucial role in the internet's structure. WANs connect remote locations using various technologies:
Highlight: The internet is considered the largest WAN in the world, connecting numerous organizational networks across geographical locations.
The growth of the internet has been remarkable:
Example: The Internet of Things (IoT) has contributed significantly to this growth. By 2020, over 31 billion IoT devices were connected to the internet, including mobile devices, parking meters, smart meters, cars, kitchen appliances, and even cat trackers.
Definition: The Internet of Things (IoT) refers to the network of "smart" devices connected over the internet, allowing them to collect and exchange data.
This exponential growth in connectivity has transformed how we interact with technology and each other, paving the way for innovative applications and services across various sectors.
Average App Rating
Students use Knowunity
In Education App Charts in 12 Countries
Students uploaded study notes
iOS User
Stefan S, iOS User
SuSSan, iOS User
