A( )is a computer system or program that automatically prevents an unauthorized person from gaining access to a computer when it is connected to a network such as the Internet.
A: firewall
B: gateway
C: router
D: anti-virus software
A: firewall
B: gateway
C: router
D: anti-virus software
举一反三
- （）is the first line of protect between your computer and the public Internet. A: The Internet protocol B: The firewall C: The anti-virus software D: The intrusion-detection systems
- The most important program on any computer is. A: Operating System B: Virus C: software D: Office 2000
- Anti-Virus software protects your computer from viruses by ( ) your computer's memory and disk devices.
- 60.A(n) ______ is hardware and/or software that protects a computer or a network from intruders. A: Web log B: worm C: firewall D: public key
- ______ access to the computer system should be prevented. A: Unequal B: Unfortunate C: Uniform D: Unauthorized