©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
OSG202 Exam Questions and Answers
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 - ANSWER✔✔-D
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
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, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
b. System programs
c. The interface between user programs and the OS is used to call the special procedure in kernel
d. User interfaces - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-D
What is not a main component of an operating system?
A. Provide user interfaces
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, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
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B. File management
C. Manage the I/O devices
D. Process management - ANSWER✔✔-A
Q6. MSDOS is a example of _____
A. Monolithic system
B. Layered System
C. Virtual Machine
D. Clientserver model - ANSWER✔✔-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 - ANSWER✔✔-D
. A timesharing system is _____
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, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
A. Another name for a batch system
B. A multiuser, multiprocess, interactive system
C. All of the others
D. None of the others - ANSWER✔✔-B
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 - ANSWER✔✔-A
_____ 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 - ANSWER✔✔-D
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FIRST PUBLISH OCTOBER 2024
OSG202 Exam Questions and Answers
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 - ANSWER✔✔-D
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
Page 1/59
, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
b. System programs
c. The interface between user programs and the OS is used to call the special procedure in kernel
d. User interfaces - ANSWER✔✔-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 - ANSWER✔✔-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 - ANSWER✔✔-D
What is not a main component of an operating system?
A. Provide user interfaces
Page 2/59
, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
B. File management
C. Manage the I/O devices
D. Process management - ANSWER✔✔-A
Q6. MSDOS is a example of _____
A. Monolithic system
B. Layered System
C. Virtual Machine
D. Clientserver model - ANSWER✔✔-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 - ANSWER✔✔-D
. A timesharing system is _____
Page 3/59
, ©EMILLECT 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED
FIRST PUBLISH OCTOBER 2024
A. Another name for a batch system
B. A multiuser, multiprocess, interactive system
C. All of the others
D. None of the others - ANSWER✔✔-B
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 - ANSWER✔✔-A
_____ 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 - ANSWER✔✔-D
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