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  • Question
  • Segmentation of a data stream happens at which layer of the OSI model?


  • Options
  • A. Physical
  • B. Data Link
  • C. Network
  • D. Transport

  • Correct Answer
  • Transport 

    Explanation
    The Transport layer receives large data streams from the upper layers and breaks these up into smaller pieces called segments.

  • Internetworking problems


    Search Results


    • 1. Why does the data communication industry use the layered OSI reference model?

      1. It divides the network communication process into smaller and simpler components, thus aiding component development, design, and troubleshooting.
      2. It enables equipment from different vendors to use the same electronic components, thus saving research and development funds.
      3. It supports the evolution of multiple competing standards and thus provides business opportunities for equipment manufacturers.
      4. It encourages industry standardization by defining what functions occur at each layer of the model.

    • Options
    • A. 1 only
    • B. 1 and 4
    • C. 2 and 3
    • D. 3 only
    • Discuss
    • 2. What type of RJ45 UTP cable do you use to connect a PC's COM port to a router or switch console port?

    • Options
    • A. Straight-through
    • B. Crossover cable
    • C. Crossover with a CSU/DSU
    • D. Rolled
    • Discuss
    • 3. How to implement a network medium that is not susceptible to EMI. Which type of cabling should you use?

    • Options
    • A. Thicknet coax
    • B. Thinnet coax
    • C. Category 5 UTP cable
    • D. Fiber-optic cable
    • Discuss
    • 4. What is the purpose of flow control?

    • Options
    • A. To ensure that data is retransmitted if an acknowledgment is not received.
    • B. To reassemble segments in the correct order at the destination device.
    • C. To provide a means for the receiver to govern the amount of data sent by the sender.
    • D. To regulate the size of each segment.
    • Discuss
    • 5. When data is encapsulated, which is the correct order?

    • Options
    • A. Data, frame, packet, segment, bit
    • B. Segment, data, packet, frame, bit
    • C. Data, segment, packet, frame, bit
    • D. Data, segment, frame, packet, bit
    • Discuss
    • 6. How does a host on an Ethernet LAN know when to transmit after a collision has occurred?

      1. In a CSMA/CD collision domain, multiple stations can successfully transmit data simultaneously.
      2. In a CSMA/CD collision domain, stations must wait until the media is not in use before transmitting.
      3. You can improve the CSMA/CD network by adding more hubs.
      4. After a collision, the station that detected the collision has first priority to resend the lost data.
      5. After a collision, all stations run a random backoff algorithm. When the backoff delay period has expired, all stations have equal priority to transmit data.

    • Options
    • A. 1 and 3
    • B. 2 and 4
    • C. 1,3 and 4
    • D. 2 and 5
    • Discuss
    • 7. Which fields are contained within an IEEE Ethernet frame header?

      1. Source and destination MAC address
      2. Source and destination network address
      3. Source and destination MAC address and source and destination network address
      4. FCS field

    • Options
    • A. 1 and 4
    • B. 2 only
    • C. 2 and 3 only
    • D. 3 only
    • Discuss
    • 8. What are the decimal and hexadecimal equivalents for the binary number 10110111?

    • Options
    • A. 69/0x2102
    • B. 183/B7
    • C. 173/A6
    • D. 83/0xC5
    • Discuss
    • 9. What type of RJ45 UTP cable is used between switches?

    • Options
    • A. Straight-through
    • B. Crossover cable
    • C. Crossover with a CSU/DSU
    • D. Crossover with a router in between the two switches
    • Discuss
    • 10. Acknowledgments, sequencing, and flow control are characteristics of which OSI layer?

    • Options
    • A. Layer 2
    • B. Layer 3
    • C. Layer 4
    • D. Layer 7
    • Discuss


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