CompTIA Network+ Certification (N10-003) Part 8

30 Questions | Total Attempts: 90

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Network Plus Quizzes & Trivia

30 CompTIA Network+ questions covering MAC addressing and the OSI model.


Questions and Answers
  • 1. 
    The MAC address f2:a1:23:bc:d3:41 consists of a manufacturer ID and a station ID.  Which three bytes represents the station identifier?
    • A. 

      F2:a1:23

    • B. 

      A1:23:bc

    • C. 

      23:bc:d3

    • D. 

      Bc:d3:41

  • 2. 
    The MAC address f2:a1:23:bc:d3:41 consists of a manufacturer ID and a station ID.  Which three bytes represents the manufacturer identifier, also known as the Organizationally Unique Identifer (OUI)?
    • A. 

      F2:a1:23

    • B. 

      A1:23:bc

    • C. 

      23:bc:d3

    • D. 

      Bc:d3:41

  • 3. 
    At which layers of the OSI reference model does packet filtering occur?
    • A. 

      Physical and Data Link

    • B. 

      Data Link and Network

    • C. 

      Data Link and Transport

    • D. 

      Network and Transport

  • 4. 
    Which layer of the OSI reference model is responsible for signal encoding?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 5. 
    Which layer of the OSI reference model defines data delivery across an individual link?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 6. 
    At which layer of the OSI reference model does routing occur?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 7. 
    Which layer of the OSI reference model is concerned with network addressing?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 8. 
    At which layer of the OSI reference model does data compression occur?
    • A. 

      Transport

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Application

  • 9. 
    At which layer of the OSI reference model does data encryption occur?
    • A. 

      Transport

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Application

  • 10. 
    At which layer of the OSI reference model does character-set translation occur?
    • A. 

      Transport

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Application

  • 11. 
    At which layer of the OSI reference model does error recovery and flow control occur?
    • A. 

      Transport

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Application

  • 12. 
    Which layer of the OSI reference model is responsible for session creation?
    • A. 

      Transport

    • B. 

      Session

    • C. 

      Presentation

    • D. 

      Application

  • 13. 
    Which of the following statements regarding the OSI reference model is true?
    • A. 

      The Transport Layer of the OSI model defines several standard network services, as well as the interface between the network and application

    • B. 

      The Session Layer of the OSI model is responsible for establishing, maintaining and breaking sessions

    • C. 

      The Presentation Layer of the OSI model defines the choice of protocols, provides error recovery and flow control

    • D. 

      The Application Layer of the OSI model converts the data from the lower layers into a format that the upper-layer processes require

  • 14. 
    Which of the following statements regarding the OSI reference model is false?
    • A. 

      One of the functions of the Physical Layer is signal encoding, which is the translation of data into electronic signals that can be transmitted on a transmission medium

    • B. 

      The Data Link Layer is concerned with getting data across a particular link or medium and defines delivery across an individual link

    • C. 

      The Network Layer of the OSI is responsible for the establishment, maintenance and breaking of sessions

    • D. 

      The Transport Layer of the OSI is concerned about the structure of messages and the validity of transmissions

  • 15. 
    You are working as a senior network technician.  One of your trainees asks you to clarify at which Open Systems Interconnect (OSI) layers a packet filtering firewall operates.  How do you answer?
    • A. 

      Network and Data Link

    • B. 

      Network and Transport

    • C. 

      Transport and Session

    • D. 

      Physical and Data Link

  • 16. 
    A trainee asks you what the OSI layer where digital data is converted into electronic signals to be put on a wire is called.  How do you answer?
    • A. 

      The Physical Layer

    • B. 

      The Transport Layer

    • C. 

      The Data Link Layer

    • D. 

      The Presentation Layer

  • 17. 
    You are a working as a technician and your boss asks you to clarify the difference between routers and switches.  You tell him that switches work at the Data Link Layer of the OSI model while routers work at the _____.
    • A. 

      Physical layer

    • B. 

      Data Link layer

    • C. 

      Network layer

    • D. 

      Application layer

  • 18. 
    A developer asks you which of the OSI layers that is responsible for translating from application to network, formatting and code conversations.  How would you answer?
    • A. 

      The Transport Layer

    • B. 

      The Data Link Layer

    • C. 

      The Application Layer

    • D. 

      The Presentation Layer

  • 19. 
    Which of the following operate at the Physical Layer?
    • A. 

      Hubs

    • B. 

      Routers

    • C. 

      Switches

    • D. 

      Wireless Access Points

  • 20. 
    Which of the following operate at the Data Link Layer? (choose all that apply)
    • A. 

      Hubs

    • B. 

      Routers

    • C. 

      Switches

    • D. 

      Wireless Access Points

  • 21. 
    Which of the following operate at the Network Layer?
    • A. 

      Hubs

    • B. 

      Routers

    • C. 

      Switches

    • D. 

      Wireless Access Points

  • 22. 
    At which layer of the OSI reference model does a router operate?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 23. 
    At which layer of the OSI reference model does a hub operate?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 24. 
    Which of the following operate at the upper three layers of the OSI model?
    • A. 

      Routers

    • B. 

      Switches

    • C. 

      Gateways

    • D. 

      Wireless Access Points

  • 25. 
    Which of the following do not operate at Layer 2 of the OSI? (choose all that apply)
    • A. 

      Bridges

    • B. 

      Routers

    • C. 

      Switches

    • D. 

      Wireless Access Points

    • E. 

      Network Interface Cards

  • 26. 
    Which of the following operate at the Data Link Layer of the OSI?
    • A. 

      Bridges, switches and wireless access points

    • B. 

      Wireless access points and routers

    • C. 

      Bridges, switches and routers

    • D. 

      Network interface cards

  • 27. 
    You need a networking device that operates at the three uppermost layers of the OSI model and that can connect networks with different architectures.  Which of the following would accomplish this?
    • A. 

      Router

    • B. 

      Firewall

    • C. 

      Modem

    • D. 

      Gateway

  • 28. 
    You are asked to identify two devices classified as Layer 2.  Which would you select?
    • A. 

      Switches and routers

    • B. 

      Switches and bridges

    • C. 

      Switches and NICs

    • D. 

      Hubs and switches

  • 29. 
    Which of the following is responsible for resolving MAC address to an IP address
    • A. 

      ARP

    • B. 

      DNS

    • C. 

      RARP

    • D. 

      WINS

  • 30. 
    Which of the following is responsible for resolving an IP address to a MAC address?
    • A. 

      ARP

    • B. 

      DNS

    • C. 

      DHCP

    • D. 

      WINS