Database System Concepts
Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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Question

From the Figure illustrates how a message is transmitted from the application layer to the physical layer in the Internet model of a data communication network.

1. With the aid of the diagrams of header formats

2. explain the main purpose of all fields of the header formats of the transport, network, and data link layers protocols. For example, the main purpose of the source address and destination address of an IP Header is to provide the sender and receiver IP addresses, respectively. 

Application
Layer
Transport
Layer
Network
Layer
Data Link
Layer
Physical
Layer
Sender
HTTP Request
+
TCP HTTP Request
+
IP TCP HTTP Request
Ethernet IP TCP HTTP Request
ကာ
PDU
Packet Application
Layer
Segment
Packet
Frame
Bit
Transport
Layer
Network
Layer
Data Link
Layer
Physical
Layer
Receiver
HTTP Request
TCP HTTP Request
IP TCP HTTP Request
Ethernet IP TCP HTTP Request
பபட
Fig. 1: Message transmission through layers.
The application Layer
uses the HTTP
protocol
• The transport layer
uses the TCP
(Transmission Control)
Protocol
• The network layer uses
The IP (Internet)
Protocol
●
The data link layer of the
LANs typically uses the
Ethernet protocol
• Protocol Data Units
(PDUs)
expand button
Transcribed Image Text:Application Layer Transport Layer Network Layer Data Link Layer Physical Layer Sender HTTP Request + TCP HTTP Request + IP TCP HTTP Request Ethernet IP TCP HTTP Request ကာ PDU Packet Application Layer Segment Packet Frame Bit Transport Layer Network Layer Data Link Layer Physical Layer Receiver HTTP Request TCP HTTP Request IP TCP HTTP Request Ethernet IP TCP HTTP Request பபட Fig. 1: Message transmission through layers. The application Layer uses the HTTP protocol • The transport layer uses the TCP (Transmission Control) Protocol • The network layer uses The IP (Internet) Protocol ● The data link layer of the LANs typically uses the Ethernet protocol • Protocol Data Units (PDUs)
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