OSG202
Which type of OS structure does give each user a subset of the resource instead of
exact copying entire of underlying real machine? A. Virtual Machine
B. Extend Kernel
C. Extra Kernel
D. ExoKernel - ✔️✔️D
Which of these statements about Microkernel are true?
A. The modules run user mode `\rightarrow` protection against bugs
B. All the layers went in the kernel
C. Resist crashing the entire system
D. All of the others - ✔️✔️A
What is the below five statements described?
1. Put the argument of called function on the stack
2. The interrupt occurs to switch from user mode to kernel mode
3. The system functions are located and executed
4. After finished, the interrupt occurs again to switch to user mode
5. The control is returned to the called function
a. System environment
b. System programs
c. The interface between user programs and the OS is used to call the special
procedure in kernel
d. User interfaces - ✔️✔️C
____ is a sort of pseudo-file that can be used to connect to processes
A. A block
B. A pipe
C. A specific file
D. A block file - ✔️✔️B
Which is the difference between personal computers and mainframe computers?
A. Personal computers are always interactive
B. Mainframe computers are mostly batch systems with many users C. Protection is
much more important on mainframe computers
D. All of the others - ✔️✔️D
What is not a main component of an operating system?
A. Provide user interfaces
B. File management
C. Manage the I/O devices
D. Process management - ✔️✔️A
,Q6. MSDOS is a example of _____
A. Monolithic system
B. Layered System
C. Virtual Machine
D. Clientserver model - ✔️✔️A
Which of the following statements is incorrect about user mode and kernel mode?
A. In kernel mode, the OS can execute every instruction in the instruction set
B. In user mode, user program can execute only a subset of instructions
C. Having two modes of operation helps prevent user programs from accessing critical
instructions
D. None of the others - ✔️✔️D
What is the main characteristic of embedded operating system?
A. Multiple CPU
B. Time-sharing
C. Many I/O devices
D. Restriction of memory size, speed of CPU, screen size, powers - ✔️✔️D
. A timesharing system is _____
A. Another name for a batch system
B. A multiuser, multiprocess, interactive system
C. All of the others
D. None of the others - ✔️✔️B
_____ are used to model devices that consist of a collection of randomly addressable
blocks such as disks
A. A character special file
B. A separate special file
C. A pipe special file
D. A block special file - ✔️✔️D
Which of these statements about Microkernel are not true?
A. Resist crashing the entire system
B. Achieve high reliability by splitting the OS into small, welldefined modules
C. The modules run user mode to protection against bugs
D. None of the others - ✔️✔️D
_____ are used to model printers, modems, and other devices that accept or output a
character stream
A. A character special file
B. A separate special file
C. A block special file
, D. A pipe special file - ✔️✔️A
The layers in Layered System are _____
A. Operator-process communication, User programs, and Processor allocation and
multiprogramming
B. Procedure management, User programs, and Processor allocation and
multiprogramming
C. File management, Operator - process communication, and Processor allocation and
multiprogramming
D. Service management, and Operator -process communication, User programs -
✔️✔️A
The OS is written as a collection of procedures, linked together into a single large
executable binary program. Which OS structure is described ?
A. MSDOS
B. Monochrome
C. MonoOS
D. MonoKernel - ✔️✔️A
The shell is ________
A. a piece of firmware that essentially provides a kind of interface for endusers
B. A piece of software that essentially provides a kind of interface for endusers
C. A piece of hardware that essentially provides a kind of interface for endusers
D. Rigid outer covering of an animal - ✔️✔️B
The _______ is a file that contains a list of shell command be executed in order
A. Shell scripts
B. Shell commands
C. None of the others
D. All of the others - ✔️✔️a
What is the mechanism? 1. The mechanism ensures that all access to system
resources is controlled. 2. The mechanism detects latent errors at the interface between
component subsystems. 3. The mechanism protects the system from unwanted
intruders.
A. Protection
B. Address space
C. Pipes
D. I/O management - ✔️✔️A
OS manage the system security such as authentication, protecting the system from
unwanted intruders.
A. Security
B. Authentication
C. Protection
Which type of OS structure does give each user a subset of the resource instead of
exact copying entire of underlying real machine? A. Virtual Machine
B. Extend Kernel
C. Extra Kernel
D. ExoKernel - ✔️✔️D
Which of these statements about Microkernel are true?
A. The modules run user mode `\rightarrow` protection against bugs
B. All the layers went in the kernel
C. Resist crashing the entire system
D. All of the others - ✔️✔️A
What is the below five statements described?
1. Put the argument of called function on the stack
2. The interrupt occurs to switch from user mode to kernel mode
3. The system functions are located and executed
4. After finished, the interrupt occurs again to switch to user mode
5. The control is returned to the called function
a. System environment
b. System programs
c. The interface between user programs and the OS is used to call the special
procedure in kernel
d. User interfaces - ✔️✔️C
____ is a sort of pseudo-file that can be used to connect to processes
A. A block
B. A pipe
C. A specific file
D. A block file - ✔️✔️B
Which is the difference between personal computers and mainframe computers?
A. Personal computers are always interactive
B. Mainframe computers are mostly batch systems with many users C. Protection is
much more important on mainframe computers
D. All of the others - ✔️✔️D
What is not a main component of an operating system?
A. Provide user interfaces
B. File management
C. Manage the I/O devices
D. Process management - ✔️✔️A
,Q6. MSDOS is a example of _____
A. Monolithic system
B. Layered System
C. Virtual Machine
D. Clientserver model - ✔️✔️A
Which of the following statements is incorrect about user mode and kernel mode?
A. In kernel mode, the OS can execute every instruction in the instruction set
B. In user mode, user program can execute only a subset of instructions
C. Having two modes of operation helps prevent user programs from accessing critical
instructions
D. None of the others - ✔️✔️D
What is the main characteristic of embedded operating system?
A. Multiple CPU
B. Time-sharing
C. Many I/O devices
D. Restriction of memory size, speed of CPU, screen size, powers - ✔️✔️D
. A timesharing system is _____
A. Another name for a batch system
B. A multiuser, multiprocess, interactive system
C. All of the others
D. None of the others - ✔️✔️B
_____ are used to model devices that consist of a collection of randomly addressable
blocks such as disks
A. A character special file
B. A separate special file
C. A pipe special file
D. A block special file - ✔️✔️D
Which of these statements about Microkernel are not true?
A. Resist crashing the entire system
B. Achieve high reliability by splitting the OS into small, welldefined modules
C. The modules run user mode to protection against bugs
D. None of the others - ✔️✔️D
_____ are used to model printers, modems, and other devices that accept or output a
character stream
A. A character special file
B. A separate special file
C. A block special file
, D. A pipe special file - ✔️✔️A
The layers in Layered System are _____
A. Operator-process communication, User programs, and Processor allocation and
multiprogramming
B. Procedure management, User programs, and Processor allocation and
multiprogramming
C. File management, Operator - process communication, and Processor allocation and
multiprogramming
D. Service management, and Operator -process communication, User programs -
✔️✔️A
The OS is written as a collection of procedures, linked together into a single large
executable binary program. Which OS structure is described ?
A. MSDOS
B. Monochrome
C. MonoOS
D. MonoKernel - ✔️✔️A
The shell is ________
A. a piece of firmware that essentially provides a kind of interface for endusers
B. A piece of software that essentially provides a kind of interface for endusers
C. A piece of hardware that essentially provides a kind of interface for endusers
D. Rigid outer covering of an animal - ✔️✔️B
The _______ is a file that contains a list of shell command be executed in order
A. Shell scripts
B. Shell commands
C. None of the others
D. All of the others - ✔️✔️a
What is the mechanism? 1. The mechanism ensures that all access to system
resources is controlled. 2. The mechanism detects latent errors at the interface between
component subsystems. 3. The mechanism protects the system from unwanted
intruders.
A. Protection
B. Address space
C. Pipes
D. I/O management - ✔️✔️A
OS manage the system security such as authentication, protecting the system from
unwanted intruders.
A. Security
B. Authentication
C. Protection
