C．omputer systems consist of two very different types of elements: Hardware, which includes all the physical things that can be touched and(71)which tells the hardware how to do.

A．Operating system

B．I/O devices

C．Courseware

D．Software

[单选题]C．omputer systems consist of two very different types of elements:(71 ) , which includes all the physical things that can be touched and Software, which tells the hardware how to do.A．Operating systemB．I/O devicesC．CoursewareD．Hardware

[单选题]Most computer systems are (71) to two different groups of attacks:Insider attacks and outsider attacks． A system that is known to be (72) to an outsider attack by preventing (73) from outside can still be vulnerable to the insider attacks accomplishe

[单选题]Most computer systems are (71) to two different groups of attacks：insider attacks and outsider attacks．A system that is known to be (72) to an outsider attack by preventing(73) from outside can still be vulnerable to the insider attacks accomplished

[单选题]Most computer systems are(71)to two different groups of attacks: Insider attacks and outsider attacks. A system that is known to be(72)to an outsider attack by preventing(73)from outside can still be vulnerable to the insider attacks accomplished by

[试题]The systems of universities are very vulnerable because they are decentralized and accessible to many people.

[单选题]Most Computer operating systems in use today, including all consumer-targeted systems, include a TCP/IP（）.A . planB . requirementC . implementationD . design

[单选题]The computer, working very fast, _________data at the speed of light.A． handlesB． handlingC． handledD． has handled

[单选题]The two brothers look very muchA.alikeB.likeC.likelyD.likewise

[单选题]The computer center，( )last year，is very popular among the students in this

[单选题]The computer center，( )last year，is very popular among the students in this