IT 342 EXAM 1 QUESTIONS WITH VERIFIED
ANSWERS
What is Abstraction? - Answers - Handle very complex problems and systems while
also hiding the details from the user.
What is a batch? - Answers - A batch is a set of similar processes that are group
together and processed one after another to maximize system performance.
What is a batch OS? When is this OS best used? - Answers - An operating system that
uses some sort of batch processing.
Best for systems that do not require human interaction. They have humans send jobs
and the OS does the rest.
What is bootstrapping? - Answers - This occurs when the computer boots up and the
OS is loaded to the main memory of the system
What is cache? - Answers - Cache is very fast memory stored close to the CPU to
reduce time for functions that are used often.
What is Character user interface? (CUI) - Answers - All commands need to be typed by
the user to make the OS function. Different than a GUI, which uses graphical interface.
What is a CPU? - Answers - Central Processing Unit; the brain of the computer.
What is CPU-bound? - Answers - These a programs bound to the CPU that require a lot
of processing power to complete.
What is a distributed OS? - Answers - This is when several physical processors are
connected to allow large computational applications to be split up and processed by
different processors, making the task much faster to complete.
After each processor has finished his part of the work, they send it back to the main
processor to have it put back together
What is an operating system? - Answers - collection of software that manages computer
hardware resources to provide services.
What are the goals of an operating system? (3) - Answers - 1. Efficient use of computer
hardware
2. Provide the user with user friendliness
3. Hide complexity of computer hardware
, What is an OS interface? - Answers - The way the user interacts with or uses the
operating system.
Usually CUI or GUI
What are the step of a booting process? - Answers - Power button on computer
CPU pins are reset
registers in cpu change value
control unit of cpu jumps to BIOS
BIOS and POST are run
BIOS finds MBR
Boot loader is in the MBR
Boot loader loads OS from main memory
What are some functions the OS performs? - Answers - Makes list of authorized users
MAke list of resources in system
List all processes running
Create processes
starts program execution
What are the OS classifications? (6 total) - Answers - Single user
Batch OS
Interactive OS
Multi programmed system
Time sharing OS
Real time system
What is a single user system? - Answers - Old, early 1950's, used punch cards. One
user at a time
What is an interactive system? - Answers - OS where the user can directly interact with
the operating system
What is a multi programmed system? - Answers - A system that can perform multiple
processes at one time by different parts of the system.
What is a time sharing OS? - Answers - Many users or programs share the CPU time.
Each has its own time slot.
ANSWERS
What is Abstraction? - Answers - Handle very complex problems and systems while
also hiding the details from the user.
What is a batch? - Answers - A batch is a set of similar processes that are group
together and processed one after another to maximize system performance.
What is a batch OS? When is this OS best used? - Answers - An operating system that
uses some sort of batch processing.
Best for systems that do not require human interaction. They have humans send jobs
and the OS does the rest.
What is bootstrapping? - Answers - This occurs when the computer boots up and the
OS is loaded to the main memory of the system
What is cache? - Answers - Cache is very fast memory stored close to the CPU to
reduce time for functions that are used often.
What is Character user interface? (CUI) - Answers - All commands need to be typed by
the user to make the OS function. Different than a GUI, which uses graphical interface.
What is a CPU? - Answers - Central Processing Unit; the brain of the computer.
What is CPU-bound? - Answers - These a programs bound to the CPU that require a lot
of processing power to complete.
What is a distributed OS? - Answers - This is when several physical processors are
connected to allow large computational applications to be split up and processed by
different processors, making the task much faster to complete.
After each processor has finished his part of the work, they send it back to the main
processor to have it put back together
What is an operating system? - Answers - collection of software that manages computer
hardware resources to provide services.
What are the goals of an operating system? (3) - Answers - 1. Efficient use of computer
hardware
2. Provide the user with user friendliness
3. Hide complexity of computer hardware
, What is an OS interface? - Answers - The way the user interacts with or uses the
operating system.
Usually CUI or GUI
What are the step of a booting process? - Answers - Power button on computer
CPU pins are reset
registers in cpu change value
control unit of cpu jumps to BIOS
BIOS and POST are run
BIOS finds MBR
Boot loader is in the MBR
Boot loader loads OS from main memory
What are some functions the OS performs? - Answers - Makes list of authorized users
MAke list of resources in system
List all processes running
Create processes
starts program execution
What are the OS classifications? (6 total) - Answers - Single user
Batch OS
Interactive OS
Multi programmed system
Time sharing OS
Real time system
What is a single user system? - Answers - Old, early 1950's, used punch cards. One
user at a time
What is an interactive system? - Answers - OS where the user can directly interact with
the operating system
What is a multi programmed system? - Answers - A system that can perform multiple
processes at one time by different parts of the system.
What is a time sharing OS? - Answers - Many users or programs share the CPU time.
Each has its own time slot.
