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  • Question
  • A receiving host has failed to receive all of the segments that it should acknowledge. What can the host do to improve the reliability of this communication session?


  • Options
  • A. Send a different source port number.
  • B. Restart the virtual circuit.
  • C. Decrease the sequence number.
  • D. Decrease the window size.

  • Correct Answer
  • Decrease the window size. 

    Explanation
    A receiving host can control the transmitter by using flow control (TCP uses Windowing by default). By decreasing the window size, the receiving host can slow down the transmitting host so the receiving host does not overflow its buffers.

  • Internetworking problems


    Search Results


    • 1. Which of the following describe router functions?

    • Options
    • A. Packet switching
    • B. Packet filtering
    • C. Internetwork communication
    • D. Path selection
    • E. All of the above
    • Discuss
    • 2. Routers operate at layer _____. LAN switches operate at layer _____. Ethernet hubs operate at layer _____. Word processing operates at layer _____.

    • Options
    • A. 3, 3, 1, 7
    • B. 3, 2, 1, none
    • C. 3, 2, 1, 7
    • D. 3, 3, 2, none
    • Discuss
    • 3. What are two purposes for segmentation with a bridge?

      1. To add more broadcast domains.
      2. To create more collision domains.
      3. To add more bandwidth for users.
      4. To allow more broadcasts for users.

    • Options
    • A. 1 only
    • B. 2 and 3
    • C. 2 and 4
    • D. 4 only
    • Discuss
    • 4. Which three statements are true about the operation of a full-duplex Ethernet network?

      1. There are no collisions in full-duplex mode.
      2. A dedicated switch port is required for each full-duplex node.
      3. Ethernet hub ports are preconfigured for full-duplex mode.
      4. In a full-duplex environment, the host network card must check for the availability of the network media before transmitting.
      5. The host network card and the switch port must be capable of operating in full-duplex mode.

    • Options
    • A. 1, 2, and 5
    • B. 2 and 4
    • C. 2, 3 and 4
    • D. 5 only
    • Discuss
    • 5. Which of the following are types of flow control?

      1. Buffering
      2. Cut-through
      3. Windowing
      4. Congestion avoidance

    • Options
    • A. 1 and 2
    • B. 1, 3 and 4
    • C. 2 only
    • D. 3 only
    • Discuss
    • 6. Which layer 1 devices can be used to enlarge the area covered by a single LAN segment?

      1. Switch
      2. NIC
      3. Hub
      4. Repeater
      5. RJ45 transceiver

    • Options
    • A. 1 only
    • B. 1 and 3
    • C. 3 and 4
    • D. 5 only
    • Discuss
    • 7. 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
    • 8. 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
    • 9. 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
    • 10. 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


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