networking TCP and IP, Schemes and Mind Maps of Wireless Networking

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NGUYEN MINH THONG

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NGUYEN TRUNG NGUYEN

NGUYEN DINH HIEU

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TCP/IP

Content

**1. What is the TCP/IP model? What is the function of layers in the TCP/IP model? Name some common protocols for each layer.

2. Definition and characteristics of the two main protocols in the TCP/IP model that are TCP and IP?
3. Compare TCP and UDP protocols.**

-What is the function of layers in the TCP/IP model?

· TCP/IP (Transmission Control Protocol/Internet Protocol), is a set of information

exchange protocols used to transmit and connect devices in the Internet. TCP/IP

was developed to make the network more reliable with automatic recovery.

However, some argue that the TCP / IP model is 5 layers, ie layers 4 to 2

are preserved, but the Datalink layer will be separate and is the upper

layer compared to the physical layer.

Name some common protocols for each layer

Tầng 4 - Tầng Ứng dụng

(Application)

This is the top communication layer of the model. As the name implies, the Application layer assumes the role of data communication between two different machines through different network services (web browsing, chat, emailing, a number of data exchange protocols: SMTP, SSH). , FTP,...). The data that arrives here will be formatted in a Byte to Byte format, along with routing information to help determine the correct path of a packet.

Tầng 3 - Tầng Giao vận

(Transport)

·The main function of layer 3 is to deal with the communication problem between hosts in the same or different networks that are connected to each other through routers. Here the data will be segmented, each segment will not be equal but the size must be less than 64KB. The full structure of a Segment is now a Header containing control information and then data.

Tầng 2 - Tầng mạng

(Internet)

Almost like the network layer of the OSI model. Here, it is also defined as a protocol responsible for the logical transmission of data in the network. The data segments will be packed (Packets) with each packet size suitable for the switching network that it uses to transmit data. At this time, the packets are inserted with a header containing information of the network layer and continue to be forwarded to the next layer. The main protocols in the layer are IP, ICMP and ARP

2. Definition and characteristics of the two main protocols in the TCP/IP model that are TCP and IP? 2.1 TCP(Transmission Control Protocol)

Definition : TCP is a reliable and connection-oriented protocol in the TCP/IP model. It

ensures the transmission of data between two computers or network devices through

connection creation, traffic control, error detection and remediation, and ensuring

data is sent and received correctly and in the correct order. on one's own.

Features:

-Reliable connection: TCP uses a three-way handshake to establish a connection

between the source and destination hosts. It ensures that the data sent is

acknowledged and received in the correct order.

-Traffic control: TCP uses a traffic control mechanism to regulate the speed of data

transmission between computers. It ensures not too much data is sent at once,

avoiding overloading the network.

-Error detection and correction: TCP has the ability to detect and correct errors

during data transmission. If a packet is lost or corrupted, TCP will ask the receiver to

resend the packet.

-Ensure data is in correct order: TCP ensures that data is sent and received in the

correct order. It uses sequence numbers to mark and locate each packet.

2. Definition and characteristics of the two main protocols in the TCP/IP model that are TCP and IP? 2.2 IP (Internet Protocol): Definition : IP is a network protocol for addressing and routing in the TCP/IP model. It ensures the encapsulation and forwarding of data between different networks, allowing devices in the network to communicate with each other via IP addresses. Features : -IP Addresses: IP uses IP addresses to identify and locate devices in the network. An IP address consists of a network portion and a host portion, which identifies the network address and address of each device in the network. -Data encapsulation: IP encapsulates data from the upper layer of the TCP/IP model into IP packets. Each IP packet contains information about the source and destination addresses, allowing the packets to travel through the network and reach the correct destination. -Routing: IP manages the routing of packets on the network. It uses routing tables to determine the most optimal path for packets from source to destination through intermediate networks.

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