The network devices that people are

The network devices that people are most familiar with are called end devices, or hosts. These devices form the interface between users and the underlying communication network.

Some examples of end devices are:

Computers (work stations, laptops, file servers, web servers)
Network printers
VoIP phones
TelePresence endpoint
Security cameras
Mobile handheld devices (such as smartphones, tablets, PDAs, and wireless debit/credit card readers and barcode scanners)
A host device is either the source or destination of a message transmitted over the network, as shown in the animation. In order to distinguish one host from another, each host on a network is identified by an address. When a host initiates communication, it uses the address of the destination host to specify where the message should be sent.
The path that a message takes from source to destination can be as simple as a single cable connecting one computer to another or as complex as a network that literally spans the globe. This network infrastructure is the platform that supports the network. It provides the stable and reliable channel over which our communications can occur.

The network infrastructure contains three categories of network components:

Devices
Media
Services
Click each button in the figure to highlight the corresponding network components.

Devices and media are the physical elements, or hardware, of the network. Hardware is often the visible components of the network platform such as a laptop, PC, switch, router, wireless access point, or the cabling used to connect the devices. Occasionally, some components may not be so visible. In the case of wireless media, messages are transmitted through the air using invisible radio frequency or infrared waves.

Network components are used to provide services and processes. These are the communication programs, called software, that run on the networked devices. A network service provides information in response to a request. Services include many of the common network applications people use every day, like email hosting services and web hosting services. Processes provide the functionality that directs and moves the messages through the network. Processes are less obvious to us but are critical to the operation of networks.
The path that a message takes from source to destination can be as simple as a single cable connecting one computer to another or as complex as a network that literally spans the globe. This network infrastructure is the platform that supports the network. It provides the stable and reliable channel over which our communications can occur.

The network infrastructure contains three categories of network components:

Devices
Media
Services
Click each button in the figure to highlight the corresponding network components.

Devices and media are the physical elements, or hardware, of the network. Hardware is often the visible components of the network platform such as a laptop, PC, switch, router, wireless access point, or the cabling used to connect the devices. Occasionally, some components may not be so visible. In the case of wireless media, messages are transmitted through the air using invisible radio frequency or infrared waves.

Network components are used to provide services and processes. These are the communication programs, called software, that run on the networked devices. A network service provides information in response to a request. Services include many of the common network applications people use every day, like email hosting services and web hosting services. Processes provide the functionality that directs and moves the messages through the network. Processes are less obvious to us but are critical to the operation of networks.
Communication across a network is carried on a medium. The medium provides the channel over which the message travels from source to destination.

Modern networks primarily use three types of media to interconnect devices and to provide the pathway over which data can be transmitted. As shown in the figure, these media are:

Metallic wires within cables
Glass or plastic fibers (fiber optic cable)
Wireless transmission
The signal encoding that must occur for the message to be transmitted is different for each media type. On metallic wires, the data is encoded into electrical impulses that match specific patterns. Fiber optic transmissions rely on pulses of light, within either infrared or visible light ranges. In wireless transmission, patterns of electromagnetic waves depict the various bit values.

Different types of network media have different features and benefits. Not all network media has the same characteristics and is appropriate for the same purpose. The criteria for choosing network media are:

The distance the media can successfully carry a signal
The environment in which the media is to be installed
The amount of data and the speed at which it must be transmitted
Th

Kết quả (Việt) 1:

The network devices that people are most familiar with are called end devices, or hosts. These devices form the interface between users and the underlying communication network.Some examples of end devices are:Computers (work stations, laptops, file servers, web servers)Network printersVoIP phonesTelePresence endpointSecurity camerasMobile handheld devices (such as smartphones, tablets, PDAs, and wireless debit/credit card readers and barcode scanners)A host device is either the source or destination of a message transmitted over the network, as shown in the animation. In order to distinguish one host from another, each host on a network is identified by an address. When a host initiates communication, it uses the address of the destination host to specify where the message should be sent.The path that a message takes from source to destination can be as simple as a single cable connecting one computer to another or as complex as a network that literally spans the globe. This network infrastructure is the platform that supports the network. It provides the stable and reliable channel over which our communications can occur.The network infrastructure contains three categories of network components:DevicesMediaServicesClick each button in the figure to highlight the corresponding network components.Thiết bị và phương tiện truyền thông là các yếu tố vật lý hoặc phần cứng, mạng. Phần cứng thường là các thành phần có thể nhìn thấy của nền tảng mạng như một máy tính xách tay, PC, switch, router, điểm truy cập không dây hoặc cáp dùng để kết nối các thiết bị. Thỉnh thoảng, một số thành phần có thể không nhìn thấy được như vậy. Trong trường hợp của phương tiện truyền thông không dây, thông điệp được truyền qua không khí bằng cách sử dụng tần số vô tuyến vô hình hoặc sóng hồng ngoại.Cấu phần mạng được sử dụng để cung cấp các dịch vụ và các quá trình. Đây là những giao tiếp chương trình, được gọi là phần mềm, mà chạy trên các thiết bị trên mạng. Một dịch vụ mạng cung cấp thông tin để đáp ứng một yêu cầu. Dịch vụ bao gồm nhiều ứng dụng mạng phổ biến được người dân sử dụng hàng ngày, giống như email lưu trữ web dịch vụ lưu trữ và dịch vụ. Quy trình cung cấp các chức năng chỉ đạo và di chuyển các tin nhắn thông qua mạng. Quy trình là chưa rõ ràng cho chúng tôi, nhưng rất quan trọng đối với hoạt động của mạng.Đường dẫn đó một tin nhắn cần từ nguồn đến đích có thể như đơn giản như là một cáp duy nhất kết nối một máy tính khác hay phức tạp như một mạng lưới nghĩa là trải rộng trên toàn thế giới. Cơ sở hạ tầng mạng này là nền tảng hỗ trợ mạng. Khách sạn cung cấp các kênh ổn định và đáng tin cậy hơn mà chúng tôi thông tin liên lạc có thể xảy ra.Cơ sở hạ tầng mạng có chứa ba loại cấu phần mạng:Thiết bịPhương tiện truyền thôngDịch vụBấm vào mỗi nút trong hình để làm nổi bật cấu phần mạng tương ứng.Devices and media are the physical elements, or hardware, of the network. Hardware is often the visible components of the network platform such as a laptop, PC, switch, router, wireless access point, or the cabling used to connect the devices. Occasionally, some components may not be so visible. In the case of wireless media, messages are transmitted through the air using invisible radio frequency or infrared waves.Network components are used to provide services and processes. These are the communication programs, called software, that run on the networked devices. A network service provides information in response to a request. Services include many of the common network applications people use every day, like email hosting services and web hosting services. Processes provide the functionality that directs and moves the messages through the network. Processes are less obvious to us but are critical to the operation of networks.Communication across a network is carried on a medium. The medium provides the channel over which the message travels from source to destination.Modern networks primarily use three types of media to interconnect devices and to provide the pathway over which data can be transmitted. As shown in the figure, these media are:Metallic wires within cablesGlass or plastic fibers (fiber optic cable)Wireless transmissionThe signal encoding that must occur for the message to be transmitted is different for each media type. On metallic wires, the data is encoded into electrical impulses that match specific patterns. Fiber optic transmissions rely on pulses of light, within either infrared or visible light ranges. In wireless transmission, patterns of electromagnetic waves depict the various bit values.Different types of network media have different features and benefits. Not all network media has the same characteristics and is appropriate for the same purpose. The criteria for choosing network media are:The distance the media can successfully carry a signalThe environment in which the media is to be installedThe amount of data and the speed at which it must be transmittedTh