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libby Moxey
14/02/2023
Computer Science
The internet structure
TCP/IP protocol enables seamless network communication across the internet. This layered approach breaks down complex networking tasks into manageable components.
Key points:
14/02/2023
211
The Domain Name System (DNS) is crucial for internet browsing, translating human-readable domain names into IP addresses.
Definition: DNS stands for Domain Name System, which acts as the phonebook of the Internet by translating domain names to IP addresses.
The DNS process:
Example: When you type "www.google.com" into your browser, DNS server translates this into the corresponding IP address, allowing your computer to locate and connect to Google's servers.
Two main switching methods are used in networking:
Circuit Switching:
Packet Switching:
Highlight: The difference between circuit switching and packet switching lies in how they handle data transmission. Circuit switching establishes a dedicated path, while packet switching breaks data into packets that can take different routes.
This section covers various network models and the importance of protocols in computer networks.
Client-Server Model:
Example: In a hotel booking system, staff computers (clients) connect to a central database server to check room availability.
Network Switch:
Wide Area Network (WAN):
Definition: A DNS server for WiFi is a server that resolves domain names to IP addresses for devices connected to a WiFi network.
Importance of Protocols:
Highlight: The TCP/IP protocol layers work together to ensure seamless communication across diverse networks and devices.
The TCP/IP model forms the backbone of internet communication, consisting of four layers that work together to enable data transmission across networks.
TCP/IP Model Layers:
Vocabulary: TCP/IP full form is Transmission Control Protocol/Internet Protocol.
Each layer in the TCP/IP model has specific responsibilities:
Highlight: Understanding the TCP/IP model 5 layers (including the physical layer) is crucial for network administrators and IT professionals.
Network Security Considerations:
Example: A TCP/IP example in action is when you send an email. The email application uses SMTP (Application Layer), which relies on TCP (Transport Layer) to ensure reliable delivery, IP (Internet Layer) for routing, and Ethernet (Link Layer) for physical transmission.
This section compares different network models and discusses common networking issues and troubleshooting techniques.
OSI vs TCP/IP Model:
Highlight: The main difference between OSI and TCP/IP model is the number of layers and their specific functions. OSI is more theoretical, while TCP/IP is more practical and widely implemented.
Common Networking Issues:
Example: A "DNS server not responding" error can occur when your device cannot connect to the DNS server, often due to network configuration issues or server downtime.
Troubleshooting Steps:
Vocabulary: Types of DNS in computer networks include Authoritative DNS servers, Recursive DNS servers, and Root DNS servers.
Advanced Networking Concepts:
Highlight: Understanding the advantages of packet switching, such as efficient bandwidth utilization and resilience to network failures, is crucial for modern network design.
This page touches on aspects of network security and potential future developments in networking technology.
Ensuring the security of computer networks is crucial in today's interconnected world. Key aspects include:
Highlight: As networks become more complex, security measures must evolve to protect against new threats and vulnerabilities.
The field of networking is constantly evolving. Some potential future trends include:
Example: In the future, your refrigerator might use IoT technology to automatically order groceries when supplies run low, communicating over high-speed 5G networks.
Protocols will continue to play a vital role in networking:
Definition: A protocol is a set of rules that govern how data is transmitted between devices on a network.
Understanding these trends and the ongoing importance of protocols is crucial for anyone looking to stay current in the field of networking.
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TCP/IP protocol enables seamless network communication across the internet. This layered approach breaks down complex networking tasks into manageable components.
Key points:
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The Domain Name System (DNS) is crucial for internet browsing, translating human-readable domain names into IP addresses.
Definition: DNS stands for Domain Name System, which acts as the phonebook of the Internet by translating domain names to IP addresses.
The DNS process:
Example: When you type "www.google.com" into your browser, DNS server translates this into the corresponding IP address, allowing your computer to locate and connect to Google's servers.
Two main switching methods are used in networking:
Circuit Switching:
Packet Switching:
Highlight: The difference between circuit switching and packet switching lies in how they handle data transmission. Circuit switching establishes a dedicated path, while packet switching breaks data into packets that can take different routes.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section covers various network models and the importance of protocols in computer networks.
Client-Server Model:
Example: In a hotel booking system, staff computers (clients) connect to a central database server to check room availability.
Network Switch:
Wide Area Network (WAN):
Definition: A DNS server for WiFi is a server that resolves domain names to IP addresses for devices connected to a WiFi network.
Importance of Protocols:
Highlight: The TCP/IP protocol layers work together to ensure seamless communication across diverse networks and devices.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The TCP/IP model forms the backbone of internet communication, consisting of four layers that work together to enable data transmission across networks.
TCP/IP Model Layers:
Vocabulary: TCP/IP full form is Transmission Control Protocol/Internet Protocol.
Each layer in the TCP/IP model has specific responsibilities:
Highlight: Understanding the TCP/IP model 5 layers (including the physical layer) is crucial for network administrators and IT professionals.
Network Security Considerations:
Example: A TCP/IP example in action is when you send an email. The email application uses SMTP (Application Layer), which relies on TCP (Transport Layer) to ensure reliable delivery, IP (Internet Layer) for routing, and Ethernet (Link Layer) for physical transmission.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This section compares different network models and discusses common networking issues and troubleshooting techniques.
OSI vs TCP/IP Model:
Highlight: The main difference between OSI and TCP/IP model is the number of layers and their specific functions. OSI is more theoretical, while TCP/IP is more practical and widely implemented.
Common Networking Issues:
Example: A "DNS server not responding" error can occur when your device cannot connect to the DNS server, often due to network configuration issues or server downtime.
Troubleshooting Steps:
Vocabulary: Types of DNS in computer networks include Authoritative DNS servers, Recursive DNS servers, and Root DNS servers.
Advanced Networking Concepts:
Highlight: Understanding the advantages of packet switching, such as efficient bandwidth utilization and resilience to network failures, is crucial for modern network design.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
This page touches on aspects of network security and potential future developments in networking technology.
Ensuring the security of computer networks is crucial in today's interconnected world. Key aspects include:
Highlight: As networks become more complex, security measures must evolve to protect against new threats and vulnerabilities.
The field of networking is constantly evolving. Some potential future trends include:
Example: In the future, your refrigerator might use IoT technology to automatically order groceries when supplies run low, communicating over high-speed 5G networks.
Protocols will continue to play a vital role in networking:
Definition: A protocol is a set of rules that govern how data is transmitted between devices on a network.
Understanding these trends and the ongoing importance of protocols is crucial for anyone looking to stay current in the field of networking.
Access to all documents
Improve your grades
Join milions of students
By signing up you accept Terms of Service and Privacy Policy
The internet connects home networks to larger networks through routers and Internet Service Providers (ISPs). The TCP/IP model provides a layered approach to networking, dividing complex tasks into simpler ones.
Definition: The TCP/IP model is a conceptual model and set of communication protocols used in the Internet and similar computer networks.
The TCP/IP protocol consists of 4 layers:
Highlight: The layered approach of the TCP/IP protocol suite allows devices from different vendors to work together seamlessly.
MAC and IP addresses play crucial roles in network communication:
Example: When you send an email, it passes through all layers of the TCP/IP model, from the application layer down to the link layer, then back up through the layers on the receiving end.
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