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Chapter 25 Crossword
Chapter 25 Crossword
36
Computer Networking
Not Applicable
02/25/2013

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Term
The individual serial bits of data are converted into 8-bit parallel data that the PC can understand through the _____ chip.
Definition
UART
Term
A modem does what is called _____ communication: It transmits data as a series of ones and zeros.
Definition
Serial
Term
_____ has the port number 443.
Definition
HTTPS
Term
To keep everything running smoothly the Interneet is broken down into groups called _____.
Definition
Tiers
Term
_____ has the port number of 25.
Definition
SMTP
Term
FTP, using ports 20 and 21, is a great way to _____ files between systems.
Definition
Share
Term
POP has the port number _____.
Definition
110
Term
Remote _____ enables you to give anyone control of your desktop.
Definition
Assistance
Term
This process of sending telephone transmissions across fully digital lines end-to-end is called _____ service.
Definition
ISDN
Term
A _____ is software that enables multiple connections to the internet to go though one protected PC.
Definition
Proxy Server
Term
Every Tier 1 and Tier 2 provider leases connections to the Internet to companies called _____.
Definition
ISP's
Term
Phone lines have a speed based on a unit called a _____ which is one cycle per second.
Definition
Baud
Term
_____ is a streaming protocol developed espeically for dial-up Internet access.
Definition
PPP
Term
Telnet is a _____ emulation program for TCP/IP networks that enable you to connect to a server or fancy router and run commands on that machine as if you were sitting in front of it.
Definition
Terminal
Term
_____ uses port 22, and the entire connection is encryped, preventing any eavesdroppers from reading your data.
Definition
SSH
Term
The SMTP server handles your _____ e-mail.
Definition
Outgoing
Term
The most famous service is the _____, the service that provides the structure for the World Wide Web, the graphical face of the Internet.
Definition
HTTP
Term
Standards have been created that use encrypted tunnels between a computer to create a private network through the Internet, resulting in what is called a _____.
Definition
VPN
Term
_____ providers own smaller, regional networks and must pay the Tier 1 providers.
Definition
Tier 2
Term
_____ has the port number 20 and 21.
Definition
FTP
Term
_____ connections to ISPs use a standard telephone line but special equipment on each end to create always on Internet connections at fast speeds.
Definition
DSL
Term
_____ has the port number 23
Definition
Telnet
Term
_____ provide Web sites that you access by using the HTTP protocol on port 80.
Definition
Web Servers
Term
The main tier, called _____, consists of nine companies called Tier 1 providers.
Definition
Tier 1
Term
HTTP has the port number _____.
Definition
80
Term
Backbone _____ connect to more than on other backobone router, creating a big, interwoven framework for communication.
Definition
Routers
Term
_____ enable computers to talk to each other via standard commercial telephone lines by converting analog signals to digital signals, and vice versa.
Definition
Modems
Term
You can use _____ to make calls over your computer network.
Definition
VoIP
Term
Flow Control, also known as _____, is the process by which two serial devices verify a conversation.
Definition
Handshaking
Term
_____ provides control over a remote server with the fully graphical interface.
Definition
Remote Desktop
Term
_____ providers are even more regional and connect to Tier 2 providers.
Definition
Tier 3
Term
_____ enables one system to share its Internet connection with other system on the network, providing an easy method for multiple systems to use one Internet connection.
Definition
ICS
Term
The _____ or IMAP server is the computer that handles incoming (to you) email.
Definition
POP3
Term
_____ uses port number 143.
Definition
IMAP
Term
Central switches connect to each other through highpcapacity _____.
Definition
Trunk Lines
Term
A _____ uses only one physical line, but each B channel sends 64 K, doubling the throughput total to 128 K.
Definition
BRI
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