Metropolitan area networks (MAN). Computer and Network Examples

The vector stencils library "Cisco people" contains 17 pictogram symbols and clipart icons of people: Man, Woman, End user male and female, End user Cisco works, Mac woman, Androgynous person, Running woman and man, Symbols men and women.
Create the computer network diagrams using the ConceptDraw PRO diagramming and vector drawing software with the design elements library "Cisco people".
The example "Design elements - Cisco people" is included in the Cisco Network Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

This example was designed on the base of the computer security diagram from the website of the Integrated Government Philippines (iGovPhil) Project.
"Department of Science and Technology (DOST) agencies, the Information and Communications Technology Office (DOST-ICTO) and the Advanced Science and Technology Institute (DOST-ASTI) are encouraging government institutions to adopt the use of cloud applications over traditional IT systems, as it unveiled a new online service called GovCloud or Government Cloud, which will enable government agencies to use secure online applications for their various computing requirements.
GovCloud was unveiled by Integrated Government Philippines (iGovPhil) Project at the start of a four-day celebration for Information and Communications Technology (ICT) Month 2013." [i.gov.ph/ govt-pushes-for-cloud-use-launches-govcloud/ ]
The cybersecurity diagram example "Government Cloud" was created using the ConceprDraw PRO software extended with the Network Security Diagrams solution from the Computer and Neworks area of ConceptDraw Solution Park.

This computer security diagram example was designed on the base of the diagram from the website of the Centers for Disease Control and Prevention (CDC).
"Encryption and Cryptography
Encryption converts plain text into ciphertext, and decryption converts ciphertext back into plain text. Ciphertext looks like random characters, but is actually the result of the application of a key to the plain text. A key is usually a mathematical algorithm known only to the sender and the intended recipient of the message.
A cryptosystem is a system for encrypting and decrypting data. A strong cryptosystem has many possible keys, so a third party would be unlikely to find the correct key by trying all possible keys. A strong cryptosystem also produces ciphertext that appears random to all standard statistical tests and resists all known methods for breaking codes.
Access Control
Before implementing encryption, an organization needs to ensure access to the database is limited to authorized users. Access controls that should be addressed include rules for creating users, users’ privileges to access objects, and users’ permissions to perform commands and various tasks.
The following diagram illustrates how access control and encryption work together to secure data" [cdc.gov/ cancer/ npcr/ tools/ security/ encryption2.htm]
The cybersecurity diagram example "Access control and encryption " was created using the ConceprDraw PRO software extended with the Network Security Diagrams solution from the Computer and Neworks area of ConceptDraw Solution Park.

The vector stencils library "Cisco people" contains 17 pictogram symbols and clipart icons of people for drawing Cisco computer network diagrams.
The symbols example "Cisco people - 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

This IVR diagram sample illustrates how ENUM works by giving an example: Subscriber A sets out to call Subscriber B:
1. The User Agent of an ENUM-enabled subscriber terminal device, or a PBX, or a Gateway, translates the request for the number +34 98 765 4321 in accordance with the rule described in RFC 3761 into the ENUM domain 1.2.3.4.5.6.7.8.9.4.3.e164.arpa.
2. A request is sent to the Domain Name System (DNS) asking it to look up the ENUM domain 1.2.3.4.5.6.7.8.9.4.3.e164.arpa.
3. The query returns a result in the form of so called Naming Authority Pointer Resource NAPTR records, as per RFC 3403. In the example above, the response is an address that can be reached in the Internet using the VoIP protocol, SIP per RFC 3261.
4. The terminal application now sets up a communication link, and the call is routed via the Internet.
This IVR diagram sample was designed on the base of the Wikimedia Commons file: Ejemplo ENUM.jpg. [commons.wikimedia.org/ wiki/ File:Ejemplo_ ENUM.jpg]
"Being able to dial telephone numbers the way customers have come to expect is considered crucial for the convergence of classic telephone service (PSTN) and Internet telephony (Voice over IP, VoIP), and for the development of new IP multimedia services. The problem of a single universal personal identifier for multiple communication services can be solved with different approaches. One simple approach is the Electronic Number Mapping System (ENUM), developed by the IETF, using existing E.164 telephone numbers, protocols and infrastructure to indirectly access different services available under a single personal identifier. ENUM also permits connecting the IP world to the telephone system in a seamless manner." [Telephone number mapping. Wikipedia]
The IVR diagram example "Example ENUM" was designed using ConceptDraw PRO diagramming and vector drawing software extended with the Interactive Voice Response Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

"Interactive voice response (IVR) is a technology that allows a computer to interact with humans through the use of voice and DTMF tones input via keypad.
In telecommunications, IVR allows customers to interact with a company’s host system via a telephone keypad or by speech recognition, after which they can service their own inquiries by following the IVR dialogue. IVR systems can respond with prerecorded or dynamically generated audio to further direct users on how to proceed. IVR applications can be used to control almost any function where the interface can be broken down into a series of simple interactions. IVR systems deployed in the network are sized to handle large call volumes.
IVR technology is also being introduced into automobile systems for hands-free operation. Current deployment in automobiles revolves around satellite navigation, audio and mobile phone systems.
It is common in industries that have recently entered the telecommunications industry to refer to an automated attendant as an IVR. The terms, however, are distinct and mean different things to traditional telecommunications professionals, whereas emerging telephony and VoIP professionals often use the term IVR as a catch-all to signify any kind of telephony menu, even a basic automated attendant. The term voice response unit (VRU), is sometimes used as well." [Interactive voice response. Wikipedia]
The interactive voice response (IVR) diagram template for the ConceptDraw PRO diagramming and vector drawing software is included in the Interactive Voice Response Diagrams solution from the Computer and Networks area of ConceptDraw Solution Park.

This AV connector pinout diagram example was redesigned from the Wikipedia file: DVI Connector Types.svg.
[en.wikipedia.org/ wiki/ File:DVI_ Connector_ Types.svg]
"Digital Visual Interface (DVI) is a video display interface developed by the Digital Display Working Group (DDWG). The digital interface is used to connect a video source to a display device, such as a computer monitor. It was developed with the intention of creating an industry standard for the transfer of digital video content.
The interface is designed to transmit uncompressed digital video and can be configured to support multiple modes such as DVI-D (digital only), DVI-A (analog only), or DVI-I (digital and analog). Featuring support for analog connections, the DVI specification is compatible with the VGA interface. This compatibility, along with other advantages, led to its widespread acceptance over competing digital display standards Plug and Display (P&D) and Digital Flat Panel (DFP). Although DVI is predominantly associated with computers, it is sometimes used in other consumer electronics such as television sets, video game consoles and DVD players." [Digital Visual Interface. Wikipedia]
The example "DVI connector types" was created using the ConceptDraw PRO diagramming and vector drawing software extended with the Audio and Video Connectors solution from the Engineering area of ConceptDraw Solution Park.

The vector stencils library "Cisco people" contains 17 pictogram symbols and clipart icons of people for drawing Cisco computer network diagrams.
The symbols example "Cisco people - 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