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Chapter 18 (Glossary)
Comptia A+ Guide to maintaining your PC, 7th Edition
13
Computer Networking
Undergraduate 1
04/13/2013

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Cards

Term
domain profile
Definition
The level of protection that Vista uses for Windows Firewall when it recognizes the computer is connected to a domain. The protection level is low because Vista expects network security is being managed by the domain’s operating system.
Term
ferrite clamp
Definition
A clamp installed on a network cable to protect against electrical interference.
Term
File Transfer Protocol (FTP)
Definition
The protocol used to transfer files over a TCP/IP network.
Term
port filtering
Definition
To open or close certain ports so they can or cannot be used. A firewall uses port filtering to protect a network from unwanted communication.
Term
port forwarding (tunneling)
Definition
A technique that allows a computer on the Internet to reach a computer on a private network using a certain port when the private network is protected by a firewall device using NAT.
Term
port triggering
Definition
When a firewall opens a port because a computer behind the firewall initiates communication on another port.
Term
private profile
Definition
The level of protection that Vista uses for Windows Firewall when it recognizes the computer is connected to a private network that is not part of a domain. This level offers moderate protection.
Term
public profile
Definition
The level of protection that Vista uses for Windows Firewall when it recognizes the computer is connected to an unsecured network. This level of protection is higher than that offered by the private profile and domain profile.
Term
Quality of Service (QoS)
Definition
A measure of the success of communication over the Internet. Communication is degraded on the Internet when packets are dropped, delayed, delivered out of order, or corrupted.
Term
Remote Assistance
Definition
A Windows XP/Vista feature that allows a support technician at a remote location to have full access to the Windows desktop.
Term
Remote Desktop
Definition
A Windows tool that gives a user access to his or her Windows desktop from anywhere on the Internet.
Term
reverse lookup
Definition
To find the host name when you know a computer’s IP address. Can be performed by the command NSLOOKUP
Term
VoIP (Voice over Internet
Protocol)
Definition
Requires a high QoS.
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