3DX5X CDC Vol 2

124 Questions | Total Attempts: 6404

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3DX5X CDC Vol 2

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Questions and Answers
  • 1. 
    What layer of the Open System Interconnect model defines the electrical, mechanical, procedural, and functional specifications for links between communicating network systems?
    • A. 

      Physical.

    • B. 

      Data Link

    • C. 

      Network.

    • D. 

      Transport.

  • 2. 
    The Institute of Electrical and Electronics Engineers divide the Open System Interconnect Data Link Layers into what two sublayers?
    • A. 

      High Level Data Link Control and Synchronous Data Link Control.

    • B. 

      Logical Link Control and Media Access Control

    • C. 

      Distance Vector and Link State.

    • D. 

      RS–232 and RS–530.

  • 3. 
    At what Open System Interconnect layer do network switches and bridges operate?
    • A. 

      Network.

    • B. 

      Physical.

    • C. 

      Data Link.

    • D. 

      Transport.

  • 4. 
    At what Open System Interconnect layer do routers operate?
    • A. 

      Network.

    • B. 

      Physical.

    • C. 

      Data Link.

    • D. 

      Transport.

  • 5. 
    At what Open System Interconnect layer are common data compression and encryption schemes used?
    • A. 

      Application.

    • B. 

      Session.

    • C. 

      Presentation.

    • D. 

      Transport.

  • 6. 
    What Open System Interconnect layer is closest to the end user?
    • A. 

      Application.

    • B. 

      Session.

    • C. 

      Presentation.

    • D. 

      Transport.

  • 7. 
    What is a formal set of rules and conventions that govern how computers exchange information over a network medium?
    • A. 

      Specification

    • B. 

      Standard.

    • C. 

      Etiquette

    • D. 

      Protocol.

  • 8. 
    What topology defines the layout of a network’s devices and media?
    • A. 

      Physical.

    • B. 

      Logical.

    • C. 

      Star.

    • D. 

      Hybrid.

  • 9. 
    What topology defines the way in which devices communicate, and data is transmitted, throughout the network?
    • A. 

      Physical.

    • B. 

      Logical.

    • C. 

      Star.

    • D. 

      Hybrid.

  • 10. 
    What topology consists of devices connected to a common, shared cable?
    • A. 

      Bus

    • B. 

      Ring.

    • C. 

      Star

    • D. 

      Hybrid.

  • 11. 
    What topology consists of cable segments from each computer connected to a centralized component?
    • A. 

      Bus

    • B. 

      Ring.

    • C. 

      Star.

    • D. 

      Hybrid.

  • 12. 
    What topology combines two or more different physical topologies in a single network?
    • A. 

      Bus

    • B. 

      Ring

    • C. 

      Star

    • D. 

      Hybrid

  • 13. 
    Which network protocol has the Department of Defense chosen as its standard to govern the flow of information?
    • A. 

      AppleTalk

    • B. 

      NetBios Extended User Interface.

    • C. 

      Transport Control Protocol/Internet Protocol

    • D. 

      Internetwork Packet Exchange/ Sequenced Packet Exchange.

  • 14. 
    What Transmission Control Protocol/Internet Protocol network layer protocol provides the service of matching a known IP address for a destination device to a Media Access Control address?
    • A. 

      Internet Protocol

    • B. 

      Address Resolution Protocol

    • C. 

      Reverse Address Resolution Protocol.

    • D. 

      Internet Control Message Protocol.

  • 15. 
    What Transmission Control Protocol/Internet Protocol network layer protocol provides the IP address for a device that knows its own MAC address?
    • A. 

      Internet Protocol

    • B. 

      Address Resolution Protocol.

    • C. 

      Reverse Address Resolution Protocol.

    • D. 

      Internet Control Message Protocol.

  • 16. 
    What Transmission Control Protocol/Internet Protocol network layer protocol provides messaging that can help with troubleshooting
    • A. 

      Internet Protocol

    • B. 

      Address Resolution Protocol.

    • C. 

      Reverse Address Resolution Protocol.

    • D. 

      Internet Control Message Protocol

  • 17. 
    What Transmission Control Protocol/Internet Protocol transport layer protocol provides reliable data delivery services?
    • A. 

      Internet Protocol

    • B. 

      User Datagram Protocol

    • C. 

      Transmission Control Protocol

    • D. 

      Internet Control Message Protocol

  • 18. 
    What application within Transmission Control Protocol/Internet Protocol is used to send and receive files via TCP?
    • A. 

      File Transfer Protocol

    • B. 

      Trivial File Transfer Protocol

    • C. 

      Simple Mail Transfer Protocol

    • D. 

      HyperText Transfer Protocol

  • 19. 
    What type of network connects networks that are typically separated by geographical distances between cities, states, countries, or around the world?
    • A. 

      Local Area Network

    • B. 

      Wide Area Network

    • C. 

      Virtual Private Network.

    • D. 

      Metropolitan Area Network

  • 20. 
    What type of network makes use of tunneling and security protocols to enables a group of two or more computer systems to communicate over the public Internet
    • A. 

      Local Area Network.

    • B. 

      Wide Area Network

    • C. 

      Virtual Private Network

    • D. 

      Metropolitan Area Network

  • 21. 
    Which is a common port that contains Hyper Text Transfer Protocol servers and proxies?
    • A. 

      Port 80.

    • B. 

      Port 110.

    • C. 

      Port 443.

    • D. 

      Port 8080.

  • 22. 
    How many bits are in an IPv4 address?
    • A. 

      16 bits.

    • B. 

      32 bits.

    • C. 

      64 bits

    • D. 

      128 bits.

  • 23. 
    Instead of using binary, how are IPv4 addresses expressed to be more user-friendly?
    • A. 

      Colon Hexadecimal Format.

    • B. 

      Dotted Decimal Notation

    • C. 

      Hexadecimal.

    • D. 

      Octal.

  • 24. 
    Using a range of 1–126 in the first octet of an IPv4 address, what class does it belong to?
    • A. 

      Class A.

    • B. 

      Class B.

    • C. 

      Class C.

    • D. 

      Class D.

  • 25. 
    What IPv4 class address is used for networks with about 250 nodes?
    • A. 

      Class C.

    • B. 

      Class D.

    • C. 

      Class E.

    • D. 

      Class F.

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