Question

These are the questions in intro to os and unix. Your efforts are appreciated. Thank you very much !

q1) [2] Give an abstract, high-level description of what a computer is.

q2) [5] List the elements of a Von Neumann Machine.

q3) [3] Name the two types of software, and give a brief description of each.

q4) [2] What are the 2 Roles/Purposes of the OS?

q5) [5] What are the OS's management tasks?

q6) [1] What is a process?

q7) [2] Computer interaction can be thought of in layers. What differentiates the layers?

q8) [1] What allows the OS to execute commands with more privileges than applications?

q9) [1] How does a user application access a service provided by the OS?

q10) [1] What is it called when the CPU switches protection modes (user mode to kernel mode or vice versa)?

q11) [1] How does a user application pass parameters as part of a request to the OS?

q12) [2] If a machine has 4 logical processors, can its operating system support more than 4 processes? Explain.

q13) [1] Why was/is Unix so portable?

q14) [5] Name the parts of a UNIX system.

q15) [3] Describe the Unix design philosophy

q16) [7] List the 4+3 types of files in UNIX, and give their symbol that represents them as from ls -l

q17) [1] On a Unix machine, where are your personal files stored?

q18) [1] Give three places to look for more info about shell commands.

Answer 1

q1) A computer is defined as a machine which can carry out sequences of arithmetic or logical operations automatically via computer programming.

q2)

1. Memory

2. Processing Unit

3. Input

4. Output

5. Control Unit

q3)

Two types of software are:

• System Software: A system software provides capabilities to the user and the hardware to function and interact with each other.
• Application Software: They are also called end-user programs because they enable the user to complete tasks, such as creating documents, spreadsheets, databases and publications, doing online research, sending email, designing graphics, running businesses, and even playing games

q4)

• Hiding the complexities of hardware from the user.
• Managing between the hardware's resources which include the processors, memory, data storage and I/O devices.

NOTE: As per Chegg policy I am allowed to answer specific number of questions (including sub-parts) on a single post. Kindly post the remaining questions separately and I will try to answer them. Sorry for the inconvenience caused.