1. Explain , in short, the following security features in recent UNIX/Linux operating systems:

User Accounts

File Permissions

Data Verification

Encrypted Storage

Secure Remote Access with OpenSSH

Software Management

Host Integrity Testing

System Recovery

Resource Allocation Controls

Monitoring and Audit Facilities

The System Firewall

2. Explain the term shell script. Explain, with an example, how a shell script can make your day to day Linux administration easier. Explain the steps, with examples, you follow to create, save, and execute a shell script.
3. Define the term variable in your own words. Explain, with an example, how you can use variables in a shell script.
4. Write the complete general syntax for shell script conditionals (if statements).
5. Define the term loop in your own words. Write the complete general syntax of differen
6. Define functions in your own words. Give an example of shell script function.
7. Describe, in your own words, the language Python. Who developed Python? Why this language is named Python? Explain, with a comparative example, how Python could be considered as a simpler language if compared to another language like C#.
8. Describe briefly why Python is a great first language.
9. Explain how, in general, main memory (RAM) and disk storage work together as an application runs.

Explain, with the help of a diagram, how Python compiles and runs source code.