41. Which of the following is an example of a real-time operating system used in automotive systems?
A) Windows
B) QNX
C) macOS
D) Ubuntu
42. Which of the following is an example of a mainframe operating system?
A) Windows
B) macOS
C) Linux
D) z/OS
43. Which of the following operating systems is designed to be highly modular and scalable for large-scale systems?
A) Windows
B) macOS
C) Linux
D) Solaris
44. Which of the following is a common feature of a real-time operating system?
A) Multitasking
B) Virtual memory
C) Dynamic loading of libraries
D) Predictable response times
45. Which of the following operating systems is known for its use in scientific and academic research?
A) Windows
B) macOS
C) Linux
D) Chrome OS
46. Which of the following is an example of a single-user operating system?
A) Windows
B) macOS
C) Linux
D) Android
47. Which of the following is an example of a multi-user operating system?
A) Windows
B) macOS
C) Linux
D) iOS
48. Which of the following operating systems is designed for use on small, resource-constrained devices?
A) Windows
B) macOS
C) Linux
D) TinyOS
49. Which of the following is an example of a proprietary operating system?
A) Windows
B) macOS
C) Linux
D) FreeBSD
50. Which of the following is an example of an open-source operating system used in servers and supercomputers?
A) Windows
B) macOS
C) Linux
D) Solaris
