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 the layer 4 (Transport) control information that is added to the Header?
Source & Destination Ports
Packet
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits
Frames


2. What happens to the PDU at layer 1(Physical)?
Converts the frames into bits for transmission across the transmission media
Source and Destination IP address
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits
Source and Destination 'MAC addresses'


3. What is the process called at the receiving Host?
Decapsulation
Segments
Converts the packets into frames - adding physical device addressing information i.e.the PDU is encapsulated with the Source and Destination 'MAC addresses'
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


4. What happens to data at layer 4 (Transport)?
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
It start in the upper layers and works is way down?
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits


5. What is data called after a Header is added?
Converts the packets into frames - adding physical device addressing information i.e.the PDU is encapsulated with the Source and Destination 'MAC addresses'
Segment
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.
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


6. 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


7. In general What are the responsibility of the upper layers?
Layer 2
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
Prepare the data to be sent through the network
Data


8. What is a PDU (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
Prepare the data to be sent through the network
Source and Destination 'MAC addresses'
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information


9. What is Service Data Unit (SDU) comsidered in layers 5 -6 &7?
Source and Destination IP address
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
Data
Converts the packets into frames - adding physical device addressing information i.e.the PDU is encapsulated with the Source and Destination 'MAC addresses'


10. 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?
Decapsulation


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. 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


13. What gets added to the service data unit at the Data Link layer?
Source and Destination MAC address
Packet
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Segments


14. What is the short description of the encapsulation process?
Data
Frames
Layer 2
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits


15. 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


16. Which OSI model layer uses service data units called frames?
Segment
Source and Destination MAC address
Upper layers--data - Transport layer--segments - Network layer--packets containing logical addresses - Data Link layer--framing that adds physical addresses - Physical layer--bits
Layer 2


17. What gets added to the service data unit at the Network layer?
Source and Destination 'IP addresses'
Source and Destination 'MAC addresses'
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.
Source and Destination IP address


18. When moving from top to bottom through the OSI model layers - which comes first - packets or segments?
Converts the segments into packets - adding logical network and device addresses i.e. the PDU is encapsulated with the Source and Destination 'IP addresses'
Packet
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


19. What is data called after the Source and Destination 'MAC addresses' are added at layer 2 (Data Link)?
Source & Destination Ports
Packet
Converts the frames into bits for transmission across the transmission media
Frames


20. What is a SDU (Service Data Unit)?
1.The Layer 1 (Physical Layer) PDU is the bit or - more generally - symbol (can also been seen as 'stream') 2.The Layer 2 (Data Link Layer) PDU is the 'Frame' 3.The Layer 3 (Network Layer) PDU is the 'Packet' 4.The Layer 4 (Transport Layer) PDU is th
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.
Source and Destination 'MAC addresses'
Source & Destination Ports


21. 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


22. 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


23. What is a MPDU (MAC Protocol Data Unit)?
A message (Protocol data unit) exchanged between MAC entities in a communication system based on the layered OSI model.
Source and Destination MAC address
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'


24. What is data called after the Source and Destination 'IP addresses' are added at layer 3 (Network)?
Segment
1st level of encapsulation - breaks the data into pieces called segments - adding sequencing and control information
Source and Destination IP address
Packet