Introduction to Networking

Which of the following terms represents L3PDU in the OSI model, which includes the network layer header and its encapsulated data?

• Packet

• Data

• Segment

• Frame

IP functions at what layer of the OSI Reference Model?

• Network

• Physical

• Session

• Transport

A user has sent a request to the server. What process does the server go through to determine what service is being requested by the user?

• De-encapsulation

• Fragmentation

• Segmentation

• Encapsulation

The term segment refers to which layer PDU?

• Internetwork layer PDU

• Network Access PDU

• Application layer PDU

• Transport layer PDU

This output comes from a network analysis tool. It lists a group of lines for each header in a PDU, with the frame (data link) header at the top, then the next header (typically the IP header), and so on. The first line in each section has a gray highlight, with the indented lines below each heading line listing details about the fields inside the respective header. You will need to remember some parts of the various headers, and compare those concepts to this output, to answer this question.

In describing line A from the graphic with an OSI model perspective, which is the correct label to be used in combination with that PDU?

• Frame

• Segment

• Packet

• Bit

This output comes from a network analysis tool. It lists a group of lines for each header in a PDU, with the frame (data link) header at the top, then the next header (typically the IP header), and so on. The first line in each section has a gray highlight, with the indented lines below each heading line listing details about the fields inside the respective header. You will need to remember some parts of the various headers, and compare those concepts to this output, to answer this question.

Based on the packet capture shown, which of the following is true?

• Line D is used for connection establishment and termination, flow control, and segmentation of large data blocks into smaller parts for transmission.

• Line C corresponds to the Transport layer of the TCP/IP model.

• Line C information is used to route packets through the internetwork.

• Line B is related to formatting data into frames appropriate for transmission onto some physical medium.

Which OSI layer is responsible for the reliable transmission of data segments between points on a network, including error detection and flow control?

• Data Link layer

• Network layer

• Session layer

• Transport layer

What is the correct term for the PDU at the Data Link layer of the OSI model?

• Segment

• Frame

• Bit

• Packet

When data is passed from the Application layer to the lower layers in the OSI model, what process is used to add headers and trailers at each layer?

• Multiplexing

• Segmentation

• De-encapsulation

• Encapsulation