Anti-Virus software protects your computer from viruses by ( ) your computer's memory and disk devices.
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- Which of the following can be inferred from the passage A: There are useful viruses as well as harmful ones. B: Many virus checking software is free of charge. C: Even if you take the advice, your computer may still be infected with viruses. D: Shut down your computer whenever there is a virus.
- （）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
- A computer system consists of two main elements:_______. A: input devices, output devices B: hardware, software C: CUP, memory D: RAM, ROM
- ● Computer software is a set of computer ____________(程序). A: programs B: system C: process D: viruses
- You canfree and shared software onto your computer from the internet. A: get B: pay C: download D: save
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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
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It is to download songs from the computer onto your smart phone.
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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
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It is convenient to download songs from the computer onto your smart phone.
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your computer in