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Telnet is an application protocol used on the Internet or local area network to provide a bidirectional interactive text-oriented communication facility using a virtual terminal connection. User data is interspersed in-band with Telnet control information in an 8-bit byte oriented data connection over the Transmission Control Protocol (TCP). Screenshot of a black screen with the output of the help command and a # prompt. A telnet client accessing the Busybox in a router. Telnet was developed in 1969 beginning with RFC 15, extended in RFC 855, and standardized as Internet Engineering Task Force (IETF) Internet Standard STD 8, one of the first Internet standards. The name stands for "teletype network".[1][2] Historically, Telnet provided access to a command-line interface on a remote host. However, because of serious security concerns when using Telnet over an open network such as the Internet, its use for this purpose has waned significantly in favor of SSH. The term telnet is also used to refer to the software that implements the client part of the protocol. Telnet client applications are available for virtually all computer platforms. Telnet is also used as a verb. To telnet means to establish a connection using the Telnet protocol, either with a command line client or with a graphical interface. For example, a common directive might be: "To change your password, telnet into the server, log in and run the passwd command." In most cases, a user would be telnetting into a Unix-like server system or a network device (such as a router).

Hearing

Calcium oxide, commonly known as quicklime or burnt lime, is a widely used chemical compound. It is a white, caustic, alkaline, crystalline solid at room temperature.

Python is an interpreted high-level general-purpose programming language. Python's design philosophy emphasizes code readability with its notable use of significant indentation.

Python is programing language

Many types of mobile operating systems (OS) are available for smartphones, including Android, BlackBerry OS, webOS, iOS, Symbian, Windows Mobile Professional (touch screen), Windows Mobile Standard (non-touch screen), and Bada. The most popular are the Apple iPhone, and the newest: Android.

Dynamic content (aka adaptive content) refers to web content that changes based on the behavior, preferences, and interests of the user. It refers to websites as well as e-mail content and is generated at the moment a user requests a page. Dynamic content is personalized and adapts based on the data you have about the user and on the access time, its goal being to deliver an engaging and satisfying online experience for the visitor.

A computer network is a group of computers that use a set of common communication protocols over digital interconnections for the purpose of sharing resources located on or provided by the network nodes.

• Sharing devices such as printers saves money.
• Site (software) licences are likely to be cheaper than buying several standalone licences.
• Files can easily be shared between users.
• Network users can communicate by email and instant messenger.
• Security is good - users cannot see other users' files unlike on stand-alone machines.
• Data is easy to backup as all the data is stored on the file server.

Many types of mobile operating systems (OS) are available for smartphones, including Android, BlackBerry OS, webOS, iOS, Symbian, Windows Mobile Professional (touch screen), Windows Mobile Standard (non-touch screen), and Bada. The most popular are the Apple iPhone, and the newest: Android.

Utility software

Application and utility software

essentially there are 4 layers here that will help you understand this

• Hardware
• Firmware
• System software
• Applications

So basically the H/W and System software(OS) interact with each other through an entry point (boot code/bootstrapping)) that is in the form of Firmware(on-boarded on the H/W itself and/or through device drivers).

This inter-dependability is developed in order for the hardware to perform operations to the commands passed by the System software.

Now applications usually make requests to the System software to help it perform a task using a hardware component.

To understand this better I’ll provide you with a high level example here of Printing.

So You have a Word doc in place to be printed.

The Hardware Printer has its onboard firmware as well as a device driver in your Systems memory( your CPU) to connect these both. Now the System Software is directly in contact with the device driver and knows that if a print command is requested by some application(in our case MS word) then I have to use this device driver code as an entry point to communicate with the printer.

So this is the flow of that operation:

1. You click on Print option
2. MS-Word makes a request to the System Software(say Windows) to inform of a print command to be executed on its ‘be-half’ by the system software
3. The system software uses the device driver code to forward that request to the printer
4. The printer’s on-board firmware understands the incoming request and data (your file to be printed) and does the required Job.