CISCO CCNA - Book 1, Chapter 2

36 Questions | Total Attempts: 484

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CISCO CCNA - Book 1, Chapter 2

Communicating over the network The structure of a network, including devices and media necessary for communications The functions protocols perform in network communications The advantages of using a layered model to describe network functionality The role of each layer in the OSI network model and the TCP/IP network model The importance of addressing and naming schemes in network communications


Questions and Answers
  • 1. 
    Refer to the exhibit. "Cell A" at IP address 10.0.0.34 has established an IP session with "IP Phone 1" at IP address 172.16.1.103. Based upon the graphic, which device type best describes the function of wireless device "Cell A?"
    • A. 

      The destination device

    • B. 

      An end device

    • C. 

      An intermediate device

    • D. 

      A media device

  • 2. 
    Refer to the exhibit. Which three labels correctly identify the network types for the network segments that are shown? (Choose three)
    • A. 

      Network A -- WAN

    • B. 

      Network B -- WAN

    • C. 

      Network C -- LAN

    • D. 

      Network B -- MAN

    • E. 

      Network C -- WAN

    • F. 

      Network A -- LAN

  • 3. 
    Refer to the exhibit. Which networking term describes the data interleaving process represented in the graphic?
    • A. 

      Piping

    • B. 

      PDU

    • C. 

      Streaming

    • D. 

      Multiplexing

    • E. 

      Encapsulation

  • 4. 
    Refer to the exhibit. Which term correctly identifies the device type that is included in the area B?
    • A. 

      Source

    • B. 

      End

    • C. 

      Transfer

    • D. 

      Intermediary

  • 5. 
    Refer to the exhibit. What type of network is shown?
    • A. 

      WAN

    • B. 

      MAN

    • C. 

      LAN

    • D. 

      WLAN

  • 6. 
    Refer to the exhibit. Which set of devices contains only end devices?
    • A. 

      A, C, D

    • B. 

      B, E, G, H

    • C. 

      C, D, G, H, I, J

    • D. 

      D, E, F, H, I, J

    • E. 

      E, F, H, I, J

  • 7. 
    Which statements correctly identify the role of intermediary devices in the network? (Choose three)
    • A. 

      Determine pathways for data

    • B. 

      Initiate data communications

    • C. 

      Retime and retransmit data signals

    • D. 

      Originate the flow of data

    • E. 

      Manage data flows

    • F. 

      Final termination point for data flow

  • 8. 
    • A. 

      Define the structure of layer specific PDU's

    • B. 

      Dictate how to accomplish layer functions

    • C. 

      Outline the functions necessary for communications between layers

    • D. 

      Limit the need for hardware compatibility

    • E. 

      Require layer dependent encapsulations

    • F. 

      Eliminate standardization among vendors

  • 9. 
    • A. 

      Tracks delay between end devices

    • B. 

      Enables consistent network paths for communication

    • C. 

      Allows modification of the original data before transmission

    • D. 

      Identifies pieces of data as part of the same communication

    • E. 

      Ensures that data pieces can be directed to the correct receiving end device

  • 10. 
    What is a primary function of the trailer information added by the data link layer encapsulation?
    • A. 

      Supports error detection

    • B. 

      Ensures ordered arrival of data

    • C. 

      Provides delivery to correct destination

    • D. 

      Identifies the devices on the local network

    • E. 

      Assists intermediary devices with processing and path selection

  • 11. 
    Which two layers of the OSI model have the same functions as the TCP/IP model Network Access Layer? (Choose two)
    • A. 

      Network

    • B. 

      Transport

    • C. 

      Physical

    • D. 

      Data Link

    • E. 

      Session

  • 12. 
    What is a PDU?
    • A. 

      Corruption of a frame during transmission

    • B. 

      Data reassembled at the destination

    • C. 

      Retransmitted packets due to lost communication

    • D. 

      A layer specific encapsulation

  • 13. 
    Which characteristic correctly refers to end devices in a network?
    • A. 

      Manage data flows

    • B. 

      Originate data flow

    • C. 

      Retime and retransmit data signals

    • D. 

      Determine pathways for data

  • 14. 
    Which three statements best describe a Local Area Network (LAN)? (Choose three)
    • A. 

      A LAN is usually in a single geographical area

    • B. 

      The network is administered by a single organization

    • C. 

      The connection between segments in the LAN is usually through a leased connection

    • D. 

      The security and access control of the network are controlled by a service provider

    • E. 

      A LAN provides network services and access to applications for users within a common organization

    • F. 

      Each end of the network is generally connected to a Telecommunication Service Provider (TSP)

  • 15. 
    • A. 

      To identify devices on the local media

    • B. 

      To identify the hops between source and destination

    • C. 

      To identify to the intermediary devices the best path through the network

    • D. 

      To identify the source and destination end devices that are communicating

    • E. 

      To identify the processes or services that are communicating within the end devices

  • 16. 
    What device is considered an intermediary device?
    • A. 

      File server

    • B. 

      IP phone

    • C. 

      Laptop

    • D. 

      Printer

    • E. 

      Switch

  • 17. 
    Which layer encapsulates the segment into packets?
    • A. 

      Physical

    • B. 

      Data Link

    • C. 

      Network

    • D. 

      Transport

  • 18. 
    What can be identified by examining the network layer header?
    • A. 

      The destination device on the local media

    • B. 

      The destination host address

    • C. 

      The bits that will be transferred over the media

    • D. 

      The source application or process creating the data

  • 19. 
    During the encapsulation process, what occurs at the data link layer?
    • A. 

      No address is added

    • B. 

      The logical address is added

    • C. 

      The physical address is added

    • D. 

      The process port number is added

  • 20. 
    What is the purpose of the TCP/IP Network Access layer?
    • A. 

      Path determination and packet switching

    • B. 

      Data presentation

    • C. 

      Reliability, flow control, and error detection

    • D. 

      Network media control

    • E. 

      The division of segments into packets

  • 21. 
    What is the proper order of the layers of the OSI model from the highest layer to the lowest layer?
    • A. 

      Physical, network, application, data link, presentation, session, transport

    • B. 

      Application, physical, session, transport, network, data link, presentation

    • C. 

      Application, presentation, physical, session, data link, transport, network

    • D. 

      Application, presentation, session, transport, network, data link, physical

    • E. 

      Presentation, data link, session, transport, network, physical, application

  • 22. 
    Which OSI layer is associated with IP addressing?
    • A. 

      1

    • B. 

      2

    • C. 

      3

    • D. 

      4

  • 23. 
    The elements of communication include a message source, a message destination and a ____________, or medium, to transport the message.
  • 24. 
    Which type of addressing is found at the OSI layer 2? (Choose two)
    • A. 

      Logical

    • B. 

      Physical

    • C. 

      MAC

    • D. 

      IP

    • E. 

      Port

  • 25. 
    When a server responds to a web request, what occurs next in the encapsulation process after the web page data is formatted and separated into TCP segments?
    • A. 

      The client decapsulates the segment and opens the web page

    • B. 

      The client adds the appropriate physical address to the segments so that the server can forward the data

    • C. 

      The server converts the data to bits for transport across the medium

    • D. 

      The server adds the source and destination address to each segment header to deliver the packets to the destination

    • E. 

      The server adds the source and destination physical addresses to the packet header

  • 26. 
    Which term describes a specific set of rules that determine the formatting of messages and the process of encapsulation used to forward data?
    • A. 

      Segmentation

    • B. 

      Protocol

    • C. 

      Multiplexing

    • D. 

      QoS

    • E. 

      Reassembly

  • 27. 
    A limited-use protocol owned by a company is considered to be____________.
  • 28. 
    Which one of the following is associated with layer 4 of the OSI model?
    • A. 

      IP

    • B. 

      TCP

    • C. 

      FTP

    • D. 

      TFTP

  • 29. 
    The device that connects a device to the media is called a/an ____________.
  • 30. 
    Which of the following terms defines dividing data streams into smaller pieces suitable for transmission?
    • A. 

      Protocol

    • B. 

      Multiplexing

    • C. 

      Segmentation

    • D. 

      Encapsulation

  • 31. 
    A device that moves data between networks is a ____________.
  • 32. 
    Which of the following is the process for interweaving multiple data streams onto one shared communication channel or network medium?
    • A. 

      Multicasting

    • B. 

      Multiplexing

    • C. 

      Encapsulation

    • D. 

      Multidirecting

  • 33. 
    Which of the following is associated with the network layer?
    • A. 

      IP address

    • B. 

      Frames

    • C. 

      MAC address

    • D. 

      Physical addressing

  • 34. 
    Which layer of the OSI model is concerned with end-to-end message delivery over the network?
    • A. 

      Network

    • B. 

      Transport

    • C. 

      Data Link

    • D. 

      Application

  • 35. 
    Which layers of the OSI model are combined into other layers of the TCP/IP model? (Choose all that apply)
    • A. 

      Network

    • B. 

      Presentation

    • C. 

      Internet

    • D. 

      Data Link

    • E. 

      Application

    • F. 

      Physical

    • G. 

      Session

    • H. 

      Network access

    • I. 

      Transport

  • 36. 
    Which of the following are true about LANs and WANs? (Choose two)
    • A. 

      LANs connect groups of networks using ISPs

    • B. 

      LANs consist of hosts communicating with logical addresses

    • C. 

      WANs connect groups of networks using TSPs

    • D. 

      WANs connect LANs

    • E. 

      Hosts on a LAN use physical addressing to communicate