A protocol for the beginning of an interaction.

The transmission control protocol puts IPpackets in sequence and checks for errors in transmission.

HyperText Transfer Protocol allows for the passing of structured text from one node connected to the Internet to another.

The protocol by which a client and server machine establish communication for the transfer of data.

Synchronize with the computer at the other end of the connection.

Acknowledge packet, stating the sequence number of the data if is ready to receive.

Ask the authoritative name servers for you

Recursive method or function

a system is designed in a tree where each member is a child or a parent element, is a strategy for creating systems that will still work if they grow many times larger.

The Internet Corporation for Assigned Names and Numbers is responsible for governing the development of DNS policy

Domains (including .net, .org, .com, .mil. and the set .xx country codes) at the end of a domain name are the highest level of the domain name hierarchy.

A What that Queries authoritative name servers until it can provide an answer to a request for domain information.

A computer dedicated to providing responses to requests for Domain Name information.

An interface that accepts text commands at a prompt, usually for immediate execution with immediate display of output.

A read-execute-print loop repeats the process of obtaining one instruction, executing it, and printing the output.

The primary program running on a computer, the operating system controls which other programs can access memory, use input and output devices, or execute instructions on the processor.

A program run by the operating system to meet particular needs of a user.

A command line interface to the operating system.

a free, open source operating system in the UNIX family of operating systems.

A specific version of a software application or operating system that collects a consistent set of versions of component pieces.

Bourne again shell is a common application to offer a shell command line; other common shell applications are the C shell, Kern shell, and this one

Secure Shell is a network protocol for secure transfer of data between computers.

A small amount of output that indicates a command line interface (CLI) is ready to accept another command, commonly some information about the user, the machine, the time, the version control branch, and/or the current working directory, plus a dollar sign or other specific punctuation mark.

A location in the file system used as a point of reference for any command in a particular window or in a particular shell's command line.

An element in a tree data structure that is the immediate descendant of another element.

An element in a tree data structure that is the immediate ancestor of another element.

n. A file system has a root directory with no parent.

n. An operating system has a root user with no limits on privileges.

v. To root a system is to obtain root access, i.e. the unlimited privileges of the root user.

A Network Interface Card is a piece of hardware that allows a computer to connect to a network.

A person who is responsible for managing computers, networks, servers, and other computing resources for an organization or group.

A set of protocols and computer networking technologies used for sending data over copper or glass fiber-optic cables.

A network interface card (NIC), defined virtually by software, that accepts outgoing packets only to echo the packets back to the operating system as though they had been received by the NIC.

Each Wi-Fi and Ethernet card has a media access control address embedded in the hardware, represented as six two-digit hexadecimal numbers separated by colons, such as “34:5f:01:6d:33:ff”.

Measure of delay in communication between two devices over a network.

Measurement of the amount of data that can be transmitted through a network.

To decrease, usually by 1; the opposite of increment.

The Internet Engineering Task Force develops and promotes Internet standards.