Trivia Quiz On CompTIA Network+ OSI Model

34 Questions | Total Attempts: 1401

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Network Plus Quizzes & Trivia

The Open Systems Interconnection model (OSI model) is an abstract model which was developed by ISO(International Organization of Standardization) in the year 1974. It's a 7 layer architecture which identifies and systematize the communication functions of a telecommunication or computing system. This quiz has been developed to test your knowledge about the process and layers of the OSI model. So, let's try out the quiz. All the best!


Questions and Answers
  • 1. 
    PDU of layers 1 through 4 are what?
    • A. 

      At layer 4 the PDU is a segment. At layer 3 they are a packet. At layer 2 a frame, at layer 1 bits.

    • B. 

      At layer 4 the PDU is a frame. At layer 3 they are a segment. At layer 2 bits, at layer 1 a frame.

    • C. 

      At layer 4 the PDU is bits. At layer 3 a frame, at layer 2 a segment. At layer 1 a packet.

    • D. 

      All are packets

  • 2. 
    IEEE 802.3 is?
    • A. 

      Logical Link Control

    • B. 

      Fiber Optic

    • C. 

      Wireless Network

    • D. 

      Ethernet

  • 3. 
    In the Application Layer what applications run in this layer?
    • A. 

      Applications like M$ Word, Excel, etc.

    • B. 

      Protocols like HTTP, FTP, POP3, etc.

    • C. 

      TCP, UDP

  • 4. 
    What is Layer 1 called? (to be sure you got the answer right; type it all in lower case).
  • 5. 
      What are the most important layers of the OSI Model to networkers?
    • A. 

      The first 4 layers (I hope you know what layers are the first four)

    • B. 

      The last 4 layers

    • C. 

      The middle 3 layers

    • D. 

      Only important layer is the physical layer

  • 6. 
    IEEEs 802.11 is?
    • A. 

      Token Ring

    • B. 

      Fiber Optic

    • C. 

      Wireless

    • D. 

      Ethernet

  • 7. 
    What standards organization created the OSI Model
    • A. 

      ANSI

    • B. 

      ISO

    • C. 

      IEEE

    • D. 

      TIA/EIA

  • 8. 
    Can you skip layers in the OSI Model?
    • A. 

      Yes

    • B. 

      No

    • C. 

      It depends on the situation

  • 9. 
    IEEE 802.2 is?
    • A. 

      Logical link control

    • B. 

      Ethernet

    • C. 

      Fiber Optic

    • D. 

      Token Ring

  • 10. 
    What does the Presentation layer do?
    • A. 

      It presents the data given to you

    • B. 

      It does nothing it's just another layer to confuse people who want to get into networking

    • C. 

      It encrypts, decrypts, and agrees upon a format to send a file

  • 11. 
    Which layer does this belong to? _______ Layer Establishes a connection (and keeps it) with the other node(s).
    • A. 

      Session

    • B. 

      Presentation

    • C. 

      Transport

    • D. 

      Network

    • E. 

      Data Link

  • 12. 
    What layer does SYN and SYN-ACKs have to deal with?
    • A. 

      Physical

    • B. 

      Network

    • C. 

      Transport

    • D. 

      Data Link

    • E. 

      Application

  • 13. 
    What data gets put into a frame/packet/segment at layer 4?
    • A. 

      Source IP, Destination IP, TTL

    • B. 

      Source Port, Destination Port, and Sequence Number

    • C. 

      Destination MAC, Source MAC, and Framecheck

  • 14. 
    What data gets put into a frame/packet/segment at layer 3?
    • A. 

      Source IP, Destination IP, TTL

    • B. 

      Source Port, Destination Port, and Sequence Number

    • C. 

      Destination MAC, Source MAC, and Framecheck

  • 15. 
    What data gets put into a frame/packet/segment at layer 2?
    • A. 

      Destination MAC, Source MAC, and Framecheck

    • B. 

      Source Port, Destination Port, and Sequence Number

    • C. 

      Source IP, Destination IP, TTL

  • 16. 
    At layer 1 what gets added to the packet?
    • A. 

      Fall out number

    • B. 

      Port number

    • C. 

      Nothing gets added to it. It's changed into bits and sent over the medium

    • D. 

      Nothing gets added as you cannot do anything at this layer.

  • 17. 
    If there are two NICs on the same network with the SAME MAC address what will happen to the network?
    • A. 

      It will come tumbling down

    • B. 

      Nothing

    • C. 

      Speed will increase ten fold

  • 18. 
    UDP and TCP are in what layer(s)?
    • A. 

      Transport AND Session

    • B. 

      Physical Layer

    • C. 

      Physical Layer AND Network Layer

    • D. 

      Transport ONLY

  • 19. 
    A ___________ is a unique character string that allows the receiving node to determine if an arriving data unit matches exactly the data unit sent by the source. (TYPE THE ANSWER IN LOWER CASE ONLY)
  • 20. 
    The 3 stars of layer 4 are: (3 answers)
    • A. 

      Source Port

    • B. 

      Destination Port

    • C. 

      Destination IP

    • D. 

      Source IP

    • E. 

      Sequence Number

  • 21. 
    The 3 stars of layer 3 are: (3 answers)
    • A. 

      Destination MAC

    • B. 

      Destination IP

    • C. 

      Source MAC

    • D. 

      Source IP

    • E. 

      TTL

  • 22. 
    Name all of the OSI model layers starting from 1 to 7. (do not include "layer" in any of your answers, all answers should be in lowercase, do not include commas either)
  • 23. 
    The 3 stars of layer 2 are: (3 answers)
    • A. 

      Destination MAC

    • B. 

      Destination IP

    • C. 

      Source MAC

    • D. 

      Framecheck (FCS)

    • E. 

      TTL

  • 24. 
    What layer does 802.11/802.3/802.5 belong to?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Presentation

    • D. 

      Assumption

    • E. 

      Classification

  • 25. 
    The 3 stars of layer 1 are: (maybe 3 answers (trick question))
    • A. 

      Destination MAC

    • B. 

      Destination IP

    • C. 

      Destination Port

    • D. 

      THIS IS FILLER YOU MUST SELECT THIS ANSWER TO GET THIS QUESTION CORRECT

    • E. 

      There is only 1 star to this layer and that is that it converts data from the Data Link layer into bits to be sent over the medium