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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A fault in a machine, especially in a computer system or program is called( )。
A. defect
B. mistake
C. bug
D. error
The ( ) is a set of programs that controls the way a computer works and runs other programs.
A. system software
B. database
C. operating system
D. Central Processing Unit
An international computer network connecting other networks and computers, the biggest network of the world, is called( )。
A. NET
B. Internet
C. intranet
D. ARPA net
【单选题】2020年4月,中共中央国务院颁发《关于构建更加完善的要素市场场化配置体质的意见》首次将()作为一种新型的生产要素置入文件。
A. 资本
B. 劳动力
C. 知识
D. 数据