0x07. Networking basics #0

This section covers various networking concepts and practical tasks. The goal of this project is to enhance the understanding of networking fundamentals and develop practical skills in configuring network settings.

Topics

• OSI model
• Different types of networks
• Ping/ICMP
• Positional parameters
  
  

Tasks

• 0-OSI_model: Text file answering the following questions:
  • What is the OSI model?
    1. Set of specifications that network hardware manufacturers must respect
    2. The OSI model is a conceptual model that characterizes the communication functions of a telecommunication system without regard to their underlying internal structure and technology
    3. The OSI model is a model that characterizes the communication functions of a telecommunication system with strong regard for their underlying internal structure and technology
  • How is the OSI model organized?
    1. Alphabetically
    2. From the lowest to the highest level
    3. Randomly

• 1-types_of_network: Text file answering the following questions:
  • What type of network a computer in local is connected to?
    1. Internet
    2. WAN
    3. LAN
  • What type of network could connect an office in one building to another office in a building a few streets away?
    1. Internet
    2. WAN
    3. LAN
  • What network do you use when you browse www.google.com from your smartphone (not connected to the Wifi)?
    1. Internet
    2. WAN
    3. LAN

• 2-MAC_and_IP_address: Text file answering the following questions:

  • What is a MAC address?
    1. The name of a network interface
    2. The unique identifier of a network interface
    3. A network interface
  • What is an IP address?
    1. Is to devices connected to a network what postal address is to houses
    2. The unique identifier of a network interface
    3. Is a number that network devices use to connect to networks
  
  

• 3-UDP_and_TCP: Text file answering the following questions

  • Which statement is correct for the TCP box:
    1. It is a protocol that is transferring data in a slow way but surely
    2. It is a protocol that is transferring data in a fast way and might loss data along in the process
  • Which statement is correct for the UDP box:
    1. It is a protocol that is transferring data in a slow way but surely
    2. It is a protocol that is transferring data in a fast way and might loss data along in the process
  • Which statement is correct for the TCP worker:
    1. Have you received boxes x, y, z?
    2. May I increase the rate at which I am sending you boxes?

• 4-TCP_and_UDP_ports: Bash script that displays listening ports.
  • Only shows listening sockets.
  • Displays the PID and name of the program to which each socket belongs.

• 5-is_the_host_on_the_network: Bash script that pings an IP address received as an argument 5 times.