3.6.6 Check Your Understanding – Data Encapsulation Answers

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1. What is the process of dividing a large data stream into smaller pieces before transmission?

  • Sequencing
  • Duplexing
  • Multiplexing
  • Segmentation ✅

Explanation: Segmentation divides a large data stream into smaller pieces that can be transmitted to the receiving device.

2. What is the PDU associated with the transport layer?

  • Segment ✅
  • Packet
  • Bits
  • Frame

Explanation: The Protocol Data Unit (PDU) at the transport layer is called a segment.

3. Which protocol stack layer encapsulates data into frames?

  • Data link ✅
  • Transport
  • Network
  • Application

Explanation: The data link layer encapsulates network-layer packets into frames.

4. What is the process of adding protocol information to data as it moves down the protocol stack?

  • De-encapsulation
  • Sequencing
  • Segmentation
  • Encapsulation ✅

Explanation: Encapsulation is the process of adding protocol information to data as it moves down through the protocol stack.

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