91. How many modes are used to isolate the kernel and the other components of the operating system?
A. 2
B. 3
C. 4
D. 5
Answer: A
Two modes are used for isolating the kernel and the other components of the operating system from any process and user applications that are running. These are kernel mode and the user mode.
92. Which are the two modes used in the isolation of the kernel and the user?
A. real mode and virtual mode
B. real mode and user mode
C. user mode and kernel mode
D. kernel mode and real mode
Answer: C
The two modes are kernel mode and the user mode which are used for isolating the kernel and the other components of the operating system from any process and user applications that are running.
93. Which of the following must be used to isolate the access in the user mode?
A. device driver
B. software driver
C. on-chip memory
D. peripherals
Answer: A
The device driver is used to control and isolate the access when it is in user mode. This is used to ensure that no conflict is caused.
94. Which mode uses 16 higher real-time class priority levels?
A. real mode
B. user mode
C. kernel mode
D. protected mode
Answer: C
The kernel-mode processes use the 16 higher real-time class priority levels and the operating system processes will take the preference over the user applications.
95. Which file system is used in Windows 95?
A. FAT
B. HPFS
C. VFAT
D. NTFS
Answer: C
The VFAT is used in Windows 95 and it also supports long file names.
96. What does HPFS stand for?
A. high-performance file system
B. high periodic file system
C. high peripheral file system
D. horsepower file system
Answer: A
The high-performance file system is an alternative file system that possesses 254 characters. It is used by the OS/2 and also writes caching to disk technique that stores data temporarily and writes it to the disk.
97. Which filing system is used by Windows NT?
A. FAT
B. VFAT
C. HPFS
D. NTFS
Answer: D
The NT filing system or NTFS is used by the Windows NT, which is its filing system that conforms to various security operations and allows system administrators to restrict access to files.
98. Which filesystem is used by the OS/2?
A. FAT
B. VFAT
C. HPFS
D. NTFS
Answer: C
The high-performance file system is an alternative file system that possesses 254 characters. It is used by the OS/2 and also writes caching to disk technique that stores data temporarily and writes it to the disk.
99. What does HAL stand for?
A. hardware abstraction layer
B. hardware address layer
C. hardware access layer
D. hardware address lead
Answer: A
The HAL is the hardware abstraction layer. This provides portability across the multiprocessor and different platforms.
100. Which of the following can provide portability across different processor-based platforms?
A. File system
B. HAL
C. NTFS
D. FAT
Answer: B
The HAL or hardware abstraction layer is designed to provide portability across the different platforms and different multiprocessors or single processors.
