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Digital Communications Network. Computer and Network Examples

The digital communication is a physical transfer of the data over a point-to-point or point-to-multipoint communication channel. Channels can be copper wires, optical fibres, wireless communication channels, etc. The data are realized as electromagnetic signals (radiowave, microwave, electrical voltage, etc.).
This example was created in ConceptDraw DIAGRAM using the Computer and Networks Area of ConceptDraw Solution Park and shows the Digital Communication Network diagram.
This diagram sample shows how Wi-Fi repeater and access point extends coverage of the wireless network.
"A wireless repeater (also called wireless range extender) takes an existing signal from a wireless router or wireless access point and rebroadcasts it to create a second network. When two or more hosts have to be connected with one another over the IEEE 802.11 protocol and the distance is too long for a direct connection to be established, a wireless repeater is used to bridge the gap. It can be a specialized stand alone computer networking device. Also, some Wireless network interface controllers (WNIC)s optionally support operating in such a mode. Those outside of the primary network will be able to connect through the new "repeated" network. However, as far as the original router or access point is concerned, only the repeater MAC is connected, making it necessary to enable safety features on the wireless repeater. Wireless repeaters are commonly used to improve signal range and strength within homes and small offices." [Wireless repeater. Wikipedia]
The wireless network diagram example "Wi-Fi repeater" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Wireless Networks solution from the Computer and Networks area of ConceptDraw Solution Park.
Wireless network diagram
Wireless network diagram, wired, Ethernet, router, printer, network cloud, laptop computer, notebook, indoor access point, coverage, computer, cellular phone, mobile phone, building, Wi-Fi access,
Used Solutions

Electrical Symbols — Composite Assemblies

Electronic components have two or more electrical terminals (or leads) aside from antennas which may only have one terminal. These leads connect to create an electronic circuit with a particular function (for example an amplifier, radio receiver, or oscillator). Basic electronic components may be packaged discretely, as arrays or networks of like components, or integrated inside of packages such as semiconductor integrated circuits, hybrid integrated circuits, or thick film devices.

26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.
The vector stencils library "Cisco switches and hubs" contains 26 symbols of Cisco switches and hubs for drawing computer network diagrams.
"A switch is a device used on a computer network to physically connect devices together. Multiple cables can be connected to a switch to enable networked devices to communicate with each other. Switches manage the flow of data across a network by only transmitting a received message to the device for which the message was intended. Each networked device connected to a switch can be identified using a MAC address, allowing the switch to regulate the flow of traffic. This maximises security and efficiency of the network. Because of these features, a switch is often considered more "intelligent" than a network hub. Hubs neither provide security, or identification of connected devices. This means that messages have to be transmitted out of every port of the hub, greatly degrading the efficiency of the network." [Network switch. Wikipedia]
"An Ethernet hub, active hub, network hub, repeater hub, multiport repeater or hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/ output (I/ O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming. A hub works at the physical layer (layer 1) of the OSI model. The device is a form of multiport repeater. Repeater hubs also participate in collision detection, forwarding a jam signal to all ports if it detects a collision." [Ethernet hub. Wikipedia]
The symbols example "Cisco switches and hubs - Vector stencils library" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
www.conceptdraw.com/ solution-park/ computer-networks-cisco
Cisco hub
Cisco hub, Cisco hub,
100BaseT hub
100BaseT hub, 100BaseT hub,
Small hub
Small hub, small hub,
Workgroup switch
Workgroup switch, workgroup switch,
Workgroup switch, subdued
Workgroup switch, subdued, workgroup switch,
Voice-enabled workgroup switch
Voice-enabled workgroup switch, voice-enabled workgroup switch, voice switch,
ATM switch
ATM switch, ATM switch,
LAN2LAN switch
LAN2LAN switch, LAN2LAN switch,
ISDN switch
ISDN switch, ISDN switch,
MGX 8000 multiservice switch
MGX 8000 multiservice switch, MGX 8000 multi service switch,
Multilayer switch with Si
Multilayer switch with Si, multilayer switch with Si,
Multilayer switch
Multilayer switch, multilayer switch, layer 3 switch,
Multilayer switch with Si, subdued
Multilayer switch with Si, subdued, multilayer switch with Si,
Program switch
Program switch, program switch,
Data center switch
Data center switch, data center switch, service module,
Voice-enabled ATM switch
Voice-enabled ATM switch, voice-enabled ATM switch,
IP DSL switch
IP DSL switch, IP DSL switch,
Content switch
Content switch, content switch,
Content service switch 1100
Content service switch 1100, content service switch 1100,
Virtual layer switch
Virtual layer switch, virtual layer switch,
Layer 2 remote switch
Layer 2 remote switch, layer 2 remote switch,
Server switch
Server switch, server switch,
Multilayer remote switch
Multilayer remote switch, multilayer remote switch,
Multifabric server switch
Multifabric server switch, multifabric server switch,
Access gateway
Access gateway, access gateway,
Long-Reach CPE
Long-Reach CPE, long reach CPE,
Used Solutions

Electrical Symbols — Stations

A power station is an industrial facility for the generation of electric power. Most power stations contain one or more generators, a rotating machine that converts mechanical power into electrical power. The relative motion between a magnetic field and a conductor creates an electrical current. The energy source harnessed to turn the generator varies widely. Most power stations in the world burn fossil fuels such as coal, oil, and natural gas to generate electricity. Others use nuclear power, but there is an increasing use of cleaner renewable sources such as solar, wind, wave and hydroelectric.

26 libraries of the Electrical Engineering Solution of ConceptDraw DIAGRAM make your electrical diagramming simple, efficient, and effective. You can simply and quickly drop the ready-to-use objects from libraries into your document to create the electrical diagram.
The vector stencils library "Cisco switches and hubs" contains 26 symbols for drawing computer network diagrams using the ConceptDraw PRO diagramming and vector drawing software.
"A network switch (sometimes known as a switching hub) is a computer networking device that is used to connect many devices together on a computer network. A switch is considered more advanced than a hub because a switch will only send a message to the device that needs or requests it, rather than broadcasting the same message out of each of its ports.
A switch is a multi-port network bridge that processes and forwards data at the data link layer (layer 2) of the OSI model. Some switches have additional features, including the ability to route packets. These switches are commonly known as layer-3 or multilayer switches. Switches exist for various types of networks including Fibre Channel, Asynchronous Transfer Mode, InfiniBand, Ethernet and others." [Network switch. Wikipedia]
"An Ethernet hub, active hub, network hub, repeater hub, multiport repeater or hub is a device for connecting multiple Ethernet devices together and making them act as a single network segment. It has multiple input/ output (I/ O) ports, in which a signal introduced at the input of any port appears at the output of every port except the original incoming. A hub works at the physical layer (layer 1) of the OSI model. The device is a form of multiport repeater. Repeater hubs also participate in collision detection, forwarding a jam signal to all ports if it detects a collision.
Some hubs may also come with a BNC and/ or Attachment Unit Interface (AUI) connector to allow connection to legacy 10BASE2 or 10BASE5 network segments." [Ethernet hub. Wikipedia]
The example "Design elements - Cisco switches and hubs" is included in the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.
Cisco switches and hubs symbols
Cisco switches and hubs symbols, workgroup switch, voice-enabled workgroup switch, voice switch, voice-enabled ATM switch, virtual layer switch, small hub, server switch, program switch, multilayer switch, layer 3 switch, multilayer switch with Si, multilayer remote switch, multifabric server switch, long reach CPE, layer 2 remote switch, data center switch, service module, content switch, content service switch 1100, access gateway, MGX 8000 multi service switch, LAN2LAN switch, ISDN switch, IP DSL switch, Cisco hub, ATM switch, 100BaseT hub,
Used Solutions

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram Computer Network Diagrams

network topology diagram software, network icons, network diagram template, networking icons available, how to draw a network diagram
Computer Network Diagrams solution extends ConceptDraw DIAGRAM software with samples, templates and libraries of vector icons and objects of computer network devices and network components to help you create professional-looking Computer Network Diagrams, to plan simple home networks and complex computer network configurations for large buildings, to represent their schemes in a comprehensible graphical view, to document computer networks configurations, to depict the interactions between network's components, the used protocols and topologies, to represent physical and logical network structures, to compare visually different topologies and to depict their combinations, to represent in details the network structure with help of schemes, to study and analyze the network configurations, to communicate effectively to engineers, stakeholders and end-users, to track network working and troubleshoot, if necessary.

wireless communications, WLAN, wireless solution, wireless networking Wireless Networks

wireless communications, WLAN, wireless solution, wireless networking
The Wireless Networks Solution extends ConceptDraw DIAGRAM software with professional diagramming tools, set of wireless network diagram templates and samples, comprehensive library of wireless communications and WLAN objects to help network engineers and designers efficiently design and create Wireless network diagrams that illustrate wireless networks of any speed and complexity, and help to identify all required equipment for construction and updating wireless networks, and calculating their costs.

Network diagrams with ConceptDraw DIAGRAM

Network diagram is the tool for description, study and analysis of network knots and connections between these knots. Created network diagram can present you the existing information in comprehensible graphic view.
Network diagrams are divided into Physical Network Diagrams and Logical Network Diagrams.
Network diagram is an indispensable tool for network administrators and engineers at development of new networks and management of existing networks.

Design Element: Computer and Network for Network Diagrams

ConceptDraw DIAGRAM is perfect for software designers and software developers who need to draw Computer&Network Diagrams.
ConceptDraw has 1004 vector stencils in the 40 libraries that helps you to start using software for designing own Network Diagrams. You can use the appropriate stencils from Computer and Network Diagrams library with 56 objects.