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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

THM Room : https://tryhackme.com/room/osimodelzi

TASK 1 What is the OSI Model?

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

Answer : Open Systems Interconnection

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

Answer : 7

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

Answer : encapsulation

TASK 2 Layer 7 - Application

What is the name of this Layer?

Answer : Application

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

Answer : Graphical User Interface

TASK 3 Layer 6 - Presentation

What is the name of this Layer?

Answer : Presentation

What is the main purpose that this Layer acts as?

Answer : Translator

TASK 4 Layer 5 - Session

What is the name of this Layer?

Answer : Session

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

Answer : Session

What is the technical term for “small chunks of data”?

Answer : Packets

TASK 5 Layer 4 - Transport

What is the name of this Layer?

Answer : Transport

What does TCP stand for?

Answer : Transmission Control Protocol

What does UDP stand for?

Answer : User Datagram Protocol

What protocol guarantees the accuracy of data?

Answer : TCP

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

Answer : UDP

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

Answer : TCP

What protocol would an application that downloads files use?

Answer : TCP

What protocol would an application that streams video use?

Answer : UDP

TASK 6 Layer 3 - Network

What is the name of this Layer?

Answer : Network

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

Answer : Y

What does the acronym “OSPF” stand for?

Answer : Open Shortest Path First

What does the acronym “RIP” stand for?

Answer : Routing Information Protocol

What type of addresses are dealt with at this layer?

Answer : IP Addresses

What is the name of this Layer?

Answer : Data Link

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

Answer : Network Interface Card

TASK 8 Layer 1 - Physical

What is the name of this Layer?

Answer : Physical

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

Answer : Binary

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

Answer : Ethernet Cables

TASK 9 Practical - OSI Game

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

Answer : THM{OSI_DUNGEON_ESCAPED}

TASK 10 Continue Your Learning: Packets & Frames

Join the “Packets and Frames” room.

No Answer.

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