超星 - Project 7 Skill two P156

单选题

Security measures consist of.

A. encryption
B. restricting access
C. data layering and backing up data
D. all of the above

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单选题

The most powerful tool in rpoviding computer security is.

A. transforming data
B. restricting access
C. coding
D. backing up data

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单选题

can be used to achieve integrity and secrecy for data.

A. Restricting access
B. Encryption
C. Data layering
D. Backing up data

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单选题

It is very important that we should not in protecting computer system.

A. display our passwords for everyone to see
B. open unidentified files
C. leave computer terminals on while we are away from our desks
D. all of the above

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单选题

All electronic communications coming into and leaving the corporation must be evaluated by the.

A. passwords
B. firewall
C. gateway
D. buffer

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