Question 16
Controls to keep password sniffing attacks from compromising computer systems include which of the following?
- static and recurring passwords.
- encryption and recurring passwords.
- one-time passwords and encryption.
- static and one-time passwords.
Question 17
Kerberos can prevent which one of the following attacks?
- tunneling attack.
- playback (replay) attack.
- destructive attack.
- process attack.
Question 18
In discretionary access environments, which of the following entities is authorized to grant information access to other people?
- Manager
- Group Leader
- Security Manager
- Data Owner
Question 19
What is the main concern with single sign-on?
- Maximum unauthorized access would be possible if a password is disclosed.
- The security administrator's workload would increase.
- The users' password would be too hard to remember.
- User access rights would be increased.
Question 20
Who developed one of the first mathematical models of a multilevel-security computer system?
- Diffie and Hellman.
- Clark and Wilson.
- Bell and LaPadula.
- Gasser and Lipner.