Houston Broadband Terms and Definitions
Digital Subscribers Line
Transfer Control Protocol / Internet Protocol is the standard suite of procols used for communication on the Internet
and many other networks. TCP/IP is built out of layers where each layer performs a specific task and passed the data
on the next layer until it is ready to transmit or receive.
Stands for Public Switched Telephone Network which refers to the network of copper lines used to transmit analog voice
Stands for Domain Name System and is a system for translating Internet Names such as website.com to their actual
IP address which consists of 4 octets such as 220.127.116.11
Stands for File Transfer Protocol and is a protocol or standard for transferring files over the Internet. FTP is built
on a client server model.
Hyper Text Transfer Protocol is a client server protocol which is used by Web Browsers for retrieving web pages from a
Stands for Plain Old Telephone Service and refers to the system of copper lines used to carry analog voice data.
Stands for Operating System is the software interface that sits between the computer user and the hardware. The
computer's Operating System allows you to give commands to the computer's hardware. Some common Operating Systems
today are Windows XP, Windows Vista, Macintosh OSX, Linux, and Unix.
Telnet is a protocol used to establish a connection with a command line client. Telnet because of security reasons has
mostly been abandoned in favor of SSH or Secure Shell Client.
Secure Shell Client allows data to be transferred between two networked machines using a Secure Channel. SSH largely
replaced Telnet due to its security and its encryption of data.
The most common HTTP Server Software. As of March 2009 Apache is responible for serving over 46% of all websites on
Stands for Internet Message Access Protocol and is a Protocol that allows an E-Mail client such as Microsoft Outlook
to access an email server to retrieve email. IMAP is supported by most email clients and along with POP is the
most common email access protocol.
POP or POP3
Post Office Protocol is another protocol used to by email clients to retrieve messages from an Email Server. POP3 is
the most current version.
Simple Mail Transfer Protocol. Unlike POP and IMAP, SMTP is used to send messages through an SMTP Email Server.
Used as a noun or a verb, Ping is a network tool used to test connectivity across an IP network.
Internet Control Message Protocol is mainly used by computers that are networked to send error messages and relies
on the IP protocol to perform its tasks.
Stands for Virtual Private Network and is a connection between computers which uses open connections and virtual
circuits of larger networks such as the Internet.
Local Area Network refers to a network of computers which covers a small area such as your network at home or
Wide Area Network refers to a network of computers that covers a much greater area and can span across National