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WorksheetsOSS (QUIZ 8) Security and Protection
Total questions: 15
Worksheet time: 8mins
Which of the following is a security mechanism?
Memory paging
File encryption
Scheduling algorithms
File fragmentation
In an operating system, protection mechanisms are primarily used to:
Backup data regularly
Detect viruses
Restrict access to resources
Compress large files
Which model focuses on confidentiality by preventing unauthorized reading of data?
Biba Model
Clark-Wilson Model
Bell-LaPadula Model
Open Access Model
Which mechanism verifies a user's identity before granting access?
Authorization
Authentication
Accounting
Archiving
Which of the following best describes Intrusion Prevention Systems (IPS)?
Allow all traffic through
Monitor but do not block intrusions
Actively block malicious activities
Encrypt user passwords
The chmod 700 file.txt command in Linux primarily controls:
Process isolation
Memory protection
File permissions
User scheduling
In the Bell-LaPadula model, the "no read up" policy ensures that:
Users can edit confidential data
Users can only read data at or below their security level
Users can write to any data they want
Users have access to all system files
Which is an example of a host-based intrusion detection system?
Snort
Tripwire
Wireshark
FirewallD
What does a security policy in an operating system define?
The exact steps to encrypt data
The backup schedule for files
The rules for protecting resources and users
The internet browsing history
Which of the following is NOT a goal of operating system protection mechanisms?
Prevent unauthorized access
Ensure fair resource usage
Improve video game performance
Maintain system stability
Security mechanisms only protect hardware, not software.
TRUE
FALSE
The Biba model focuses on maintaining the integrity of information.
TRUE
FALSE
Intrusion Detection Systems (IDS) prevent all attacks automatically.
TRUE
FALSE
File permissions in Linux can restrict other users from reading your files.
TRUE
FALSE
An OS security model provides a theoretical framework for enforcing security policies.
TRUE
FALSE
