Please check and see if my work is right. Which reference model provides a commo
ID: 3820517 • Letter: P
Question
Please check and see if my work is right.
Which reference model provides a common framework for developers and students of networking to work with and learn from
Open systems Interconnection reference model
The TCP/IP Application layer represents which layer(s) of the OSI model?
4, The transport level .
3. Which OSI layer has the job of providing services to user applications.
a. Application layer
b. Physical layer
c. Session layer
d. Transport layer
4. Refers to sending data with successive layers of control information before transmission:
a. Encryption
b. Augmentation
c. Encapsulation
d. Amplification
5. As data is traveling down the protocol stack, it is divided into data units called:
Protocol data units
6. What does De-encapsulation refer to?
Header information
7. Which OSI layer may contain any of the following problems: missing or misconfigured client or server software and incompatible or obsolete commands
Session
Transport
Network
d. Application
8. Which OSI layer ensures that the data passing through has the appropriate data formatting for the recipient
Session
Transport
c. Presentation
d. Application
9. At which OSI level does the redirector utility operate, redirecting I/O operations to a server with the appropriate resources that can handle the requests?
Presentation layer
10. At which OSI layer does synchronization between user tasks “checkpoints” occur? If a network failure occurs, only the most recent data (from the last checkpoint) has to be retransmitted.
a. Presentation
b. Transport
c. Application
d. Session
11. At which OSI layer when content is received the layer reassembles the original messages, and sends an acknowledgment that the content was received.
a. Presentation
b. Session
c. Application
d. Transport
12. Why is the sequence and acknowledgement number key fields important in the Transport Layer header?
Source and destination port numbers
Sequence and acknowledgement numbers
Window size
13. At which OSI layer are messages addressed, and the translation of logical addresses and names into physical addresses occurs. The route for data to be sent from its source to its destination is also determined.
Physical layer
14. At which OSI layer do routers support access control; determining if a packet meets appropriate criteria before its allowed through.
a. Session
b. Network
c. Application
d. Transport
15. Name two problems that can occur at the OSI Network layer.
Incorrect IP addresses or subnet masks
Incorrect router configuration
16. Which OSI layer defines the MAC address?
a. Session
b. Data Link
c. Application
d. Transport
17. What parts of the PDU frame are added by the Data link layer?
Trailer component
18. (choose true or false) Hardware components that operate at the Data link layer include switches and NICs. True
19. Which OSI layer works with the electrical, optical and mechanical interfaces to a cable?
Physical layer
20. Defines LAN standards to ensure that manufacturers cabling works with network interfaces.
a. Institute of Electrical and Electronics Engineers
b. Institute of Electrical and Integrated circuit technology Engineers
c. Institute of Electrical and Microelectronics Engineers
d. Institute of Electrical and Computer Electronics Engineers
21. Through the IEEE 802 specifications the Data Link layer was divided into two sublayers. The ___MAC_____ is the sublayer which is concerned about access to the physical medium.
Part 4 - Additional Questions
Please complete the following questions. (1 point each)
(choose true or false) The OSI Reference Model has become such a key part of networking because it provides a common framework for developers and students of networking to work with and learn from. True
What is meant by peer communication between layers?
Each layer provides services to the next higher later until the data reaches the application layer. Each layer behaves as though it were communicating with the same layer on the other computer.
In the IEEE 802 standards, each number after the dot represents a different _______________________.
Year the standard was drafted
b.Year the standard was revised
c.Technology or subset of a technology
d.Subset of another standard
Part 5
Please complete the following questions from pages 313-316. (1 point each)
1. Which OSI layer handles flow control, data segmentation, and reliability?
a. Application
b. Physical
c. Transport
d. Data Link
2. When and how many times is a CRC calculated?
a. Once, before transmission
b. Once, after receipt
c. Twice, once before transmission and again on receipt
d. At the source and destination and at each intermediary device
3. Which IEEE 802 standard applies to wireless LANs?
Standards to ensure that network interfaces and cabling from multiple manufacturers would be compatible.
4. Which of the following problems can occur at the Physical layer?
a. NIC driver problems
b. Incorrect IP addresses
c. Signal errors caused by noise
Explanation / Answer
3. Which OSI layer has the job of providing services to user applications.
Answer: Option a. Application layer
4. Refers to sending data with successive layers of control information before transmission:
Answer: Option c. Encapsulation
5. As data is traveling down the protocol stack, it is divided into data units called:
Answer: Protocol data units
6. What does De-encapsulation refer to?
Answer: Header information
7. Which OSI layer may contain any of the following problems: missing or misconfigured client or server software and incompatible or obsolete commands
Answer: Option d. Application
8. Which OSI layer ensures that the data passing through has the appropriate data formatting for the recipient
Answer: Option a.Session
9. At which OSI level does the redirector utility operate, redirecting I/O operations to a server with the appropriate resources that can handle the requests?
Answer: Presentation layer
10. At which OSI layer does synchronization between user tasks “checkpoints” occur? If a network failure occurs, only the most recent data (from the last checkpoint) has to be retransmitted.
Answer: Option d. Session
11. At which OSI layer when content is received the layer reassembles the original messages, and sends an acknowledgment that the content was received.
Answer: Option d. Transport
12. Why is the sequence and acknowledgement number key fields important in the Transport Layer header?
Answer: Source and destination port numbers
Sequence and acknowledgement numbers
Window size
13. At which OSI layer are messages addressed, and the translation of logical addresses and names into physical addresses occurs. The route for data to be sent from its source to its destination is also determined.
Answer: Physical layer
14. At which OSI layer do routers support access control; determining if a packet meets appropriate criteria before its allowed through.
Answer: Option b. Network
15. Name two problems that can occur at the OSI Network layer.
Answer: Incorrect IP addresses or subnet masks
Incorrect router configuration
16. Which OSI layer defines the MAC address?
Answer: Option b. Data Link
Explanation: The data link layer controls access to the physical media, however, it is not part of the physical layer. This is especially confusing since the MAC address is also known as the hardware or physical address
17. What parts of the PDU frame are added by the Data link layer?
Answer: Trailer component
18. (choose true or false) Hardware components that operate at the Data link layer include switches and NICs.
Answer: True
19. Which OSI layer works with the electrical, optical and mechanical interfaces to a cable?
Answer: Physical layer
Explanation: Physical Layer Transmits the unstructured raw bit stream over a physical medium. It
Relates the electrical, optical mechanical and functional interfaces to the
cable. It also Defines how the cable is attached to the network adapter card.
20. Defines LAN standards to ensure that manufacturers cabling works with network interfaces.
Answer: Option a. Institute of Electrical and Electronics Engineers
21. Through the IEEE 802 specifications the Data Link layer was divided into two sublayers. The ___MAC_____ is the sublayer which is concerned about access to the physical medium.
Part 4 - Additional Questions
Please complete the following questions. (1 point each)
(choose true or false) The OSI Reference Model has become such a key part of networking because it provides a common framework for developers and students of networking to work with and learn from. True
What is meant by peer communication between layers?
Each layer provides services to the next higher later until the data reaches the application layer. Each layer behaves as though it were communicating with the same layer on the other computer.
In the IEEE 802 standards, each number after the dot represents a different _______________________.
Answer: Option a. Year the standard was drafted
Which OSI layer handles flow control, data segmentation, and reliability?
Answer: Option c. Transport
When and how many times is a CRC calculated?
Answer: Option d. At the source and destination and at each intermediary device
4. Which of the following problems can occur at the Physical layer?
Answer: Option c. Signal errors caused by noise