Cisco Certification Data Encapsulation

Instructions:

• Answer 24 questions in 15 minutes.
• If you are not ready to take this test, you can study here.
• Match each statement with the correct term.
• Don't refresh. All questions and answers are randomly picked and ordered every time you load a test.

This is a study tool. The 3 wrong answers for each question are randomly chosen from answers to other questions. So, you might find at times the answers obvious, but you will see it re-enforces your understanding as you take the test each time.

1. What is data called after the Source and Destination 'IP addresses' are added at layer 3 (Network)?
Packet
Layer 2
Converts the packets into frames - adding physical device addressing information i.e.the PDU is encapsulated with the Source and Destination 'MAC addresses'
Source and Destination MAC address


2. What is the process called at the receiving Host?
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.
Decapsulation
4.The Layer 4 (Transport Layer) PDU is the segment for TCP connections or datagram for UDP connections 'Segment' 3.The Layer 3 (Network Layer) PDU is the 'Packet' 2.The Layer 2 (Data Link Layer) PDU is the 'Frame' 1.The Layer 1 (Physical Layer) PDU i
Packet


3. What happens to data at layer 4 (Transport)?
Source and Destination MAC address
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Converts the frames into bits for transmission across the transmission media
It is a unit of data that has been passed down from an OSI layer to a lower layer and that has not yet been encapsulated into a protocol data unit (PDU) by the lower layer.


4. In general What are the responsibility of the upper layers?
It is a unit of data that has been passed down from an OSI layer to a lower layer and that has not yet been encapsulated into a protocol data unit (PDU) by the lower layer.
Prepare the data to be sent through the network
Frames
Source and Destination IP address


5. What gets added to the service data unit at the Data Link layer?
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
Source and Destination MAC address
Source & Destination Ports
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.


6. What is Service Data Unit (SDU) comsidered in layers 5 -6 &7?
Data
Segment
Prepare the data to be sent through the network
Source and Destination 'MAC addresses'


7. What is a SDU (Service Data Unit)?
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
Converts the frames into bits for transmission across the transmission media
Segments
It is a unit of data that has been passed down from an OSI layer to a lower layer and that has not yet been encapsulated into a protocol data unit (PDU) by the lower layer.


8. What happens to the PDU at layer 3 (Network)?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


9. What happens to the PDU at layer 1(Physical)?
Segments
4.The Layer 4 (Transport Layer) PDU is the segment for TCP connections or datagram for UDP connections 'Segment' 3.The Layer 3 (Network Layer) PDU is the 'Packet' 2.The Layer 2 (Data Link Layer) PDU is the 'Frame' 1.The Layer 1 (Physical Layer) PDU i
Converts the frames into bits for transmission across the transmission media
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits


10. What gets added to the service data unit at the Network layer?
4.The Layer 4 (Transport Layer) PDU is the segment for TCP connections or datagram for UDP connections 'Segment' 3.The Layer 3 (Network Layer) PDU is the 'Packet' 2.The Layer 2 (Data Link Layer) PDU is the 'Frame' 1.The Layer 1 (Physical Layer) PDU i
Segments
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
Source and Destination IP address


11. In an OSI context what happens to a PDU that is being Transmitted?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


12. Which OSI model layer uses service data units called frames?
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Packet
Layer 2
Converts the frames into bits for transmission across the transmission media


13. In an OSI context what happens to a PDU that is being recieved?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


14. What is a MPDU (MAC Protocol Data Unit)?
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
Decapsulation
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.


15. Where does the process of data encapsulation start?
It is a unit of data that has been passed down from an OSI layer to a lower layer and that has not yet been encapsulated into a protocol data unit (PDU) by the lower layer.
Packet
It start in the upper layers and works is way down?
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.


16. When moving from top to bottom through the OSI model layers - which comes first - packets or segments?
Segments
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
4.The Layer 4 (Transport Layer) PDU is the segment for TCP connections or datagram for UDP connections 'Segment' 3.The Layer 3 (Network Layer) PDU is the 'Packet' 2.The Layer 2 (Data Link Layer) PDU is the 'Frame' 1.The Layer 1 (Physical Layer) PDU i
Decapsulation


17. What is the layer 3 (Network) control information that is added to the Header?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


18. What happens to the PDU at layer 2(Data Link)?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


19. What is data called after a Header is added?
Segment
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Prepare the data to be sent through the network


20. What is the layer 2 (Data Link) control information that is added to the Header?

Warning: Invalid argument supplied for foreach() in /var/www/html/basicversity.com/show_quiz.php on line 183


21. What is the layer 4 (Transport) control information that is added to the Header?
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.
Source & Destination Ports
Frames
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'


22. What is the short description of the encapsulation process?
Data
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits
Prepare the data to be sent through the network


23. What is a PDU (Protocol Data Unit)?
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
In a layered system - a unit of data which is specified in a protocol of a given layer and which consists of protocol-control information and possibly user data of that layer
Source & Destination Ports
Packet


24. What is data called after the Source and Destination 'MAC addresses' are added at layer 2 (Data Link)?
Frames
Converts the frames into bits for transmission across the transmission media
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits
Decapsulation