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OSI Model

Learn about the fundamental networking framework that determines the various stages in which data is handled across a network

Task 1 What is the OSI Model?

What does the “OSI” in “OSI Model” stand for?

✅ Open Systems Interconnection

How many layers (in digits) does the OSI model have?

✅ 7

What is the key term for when pieces of information get added to data?

✅ encapsulation

Task 2 Layer 1 - Physical

What is the name of this Layer?

✅ Physical

What is the name of the numbering system that is both 0’s and 1’s?

✅ Binary

What is the name of the cables that are used to connect devices?

✅ Ethernet Cables

Task 3 Layer 2 - Data Link

What is the name of this Layer?

✅ Data Link

What is the name of the piece of hardware that all networked devices come with?

✅ Network Interface Card

Task 4 Layer 3 - Network

What is the name of this Layer?

✅ Network

Will packets take the most optimal route across a network? (Y/N)

✅ Y

What does the acronym “OSPF” stand for?

✅ Open Shortest Path First

What does the acronym “RIP” stand for?

✅ Routing Information Protocol

What type of addresses are dealt with at this layer?

✅ IP Addresses

Task 5 Layer 4 - Transport

What is the name of this Layer?

✅ Transport

What does TCP stand for?

✅ Transmission Control Protocol

What does UDP stand for?

✅ User Datagram Protocol

What protocol guarantees the accuracy of data?

✅ TCP

What protocol doesn’t care if data is received or not by the other device?

✅ UDP

What protocol would an application such as an email client use?

✅ TCP

What protocol would an application that downloads files use?

✅ TCP

What protocol would an application that streams video use?

✅ UDP

Task 6 Layer 5 - Session

What is the name of this layer?

✅ Session

What is the technical term for when a connection is succesfully established?

✅ Session

Task 7 Layer 6 - Presentation

What is the name of this Layer?

✅ Presentation

What is the main purpose that this Layer acts as?

✅ Translator

Task 8 Layer 7 - Application

What is the name of this Layer?

✅ Application

What is the technical term that is given to the name of the software that users interact with?

✅ Graphical User Interface

Task 9 Practical - OSI Game

Escape the dungeon to retrieve the flag. What is the flag?

✅ THM{OSI_DUNGEON_ESCAPED}

Task 10 Continue Your Learning: Packets & Frames

Join the “Packets and Frames” room.

✅ No answer needed