Which of the following actions generates an external interrupt? *
1/1
A system call instruction is executed.
Division by zero occurs.
An input/output operation is completed.
A page that does not exist in the main memory is accessed by the virtual storage
management. - ️️An input/output op...
OSG202
Which of the following actions generates an external interrupt? *
1/1
A system call instruction is executed.
Division by zero occurs.
An input/output operation is completed.
A page that does not exist in the main memory is accessed by the virtual storage
management. - ✔️✔️An input/output operation is completed.
Which of the following is not a step in the boot process? *
1/1
The antivirus program checks all files for viruses
Configuration and customization settings are checked
The operating system is loaded into RAM
The BIOS is activated by powering on the CPU - ✔️✔️The antivirus program checks all
files for viruses
The language of the CPU is known as its *
1/1
Instruction set
None of the other choices
Register set
Control unit set - ✔️✔️Instruction set
Which of special register contains the Mode Bit (user or kernel)? *
1/1
Program Status Word (PSW)
Instruction Register (IR)
Program Counter (PC)
None of the other choices - ✔️✔️Program Status Word (PSW)
What part of the boot process determines whether the peripheral devices are working
properly? *
1/1
CMOS
POST
ROM
BIOS - ✔️✔️POST
As one proceeds down the memory hierarchy (from inboard memory to offline storage),
the following conditions apply: *
1/1
Increasing capacity
,Increasing access time
Decreasing cost per bit
All of the other choices - ✔️✔️All of the other choices
Examples of general purpose stored program computers include the following except *
1/1
Personal computers
Network servers
Workstations
MP3 player - ✔️✔️MP3 player
Which of special register contains the condition code bits, the CPU priority, the mode bit
and other control bits)? *
1/1
Instruction Register (IR)
Program Status Word (PSW)
Program Counter (PC)
None of the other choices - ✔️✔️Program Status Word (PSW)
As one proceeds down the memory hierarchy (from inboard memory to offline storage),
which of the following conditions is correct? *
1/1
Increasing access time
None of the other choices
Decreasing capacity
Increasing cost per bit - ✔️✔️Increasing access time
Which of the following statements about Random Access Memory (RAM) is correct? *
1/1
Can only be read sequentially
Stores all the files on the computer
Is volatile
Is typically faster than cache memory - ✔️✔️Is volatile
Which of the following is not a operating mode of CPU *
1/1
Kernel mode
Management mode
User mode
None of the other choices - ✔️✔️Management mode
Which of the following instructions should be allowed in user mode? *
1/1
,Read the time-of-day clock
Set the time-of-day clock
Change the memory map
Disable all interrupts - ✔️✔️Read the time-of-day clock
Where is the position of the operating system in computer system: *
1/1
Above the hardware and under the user interface program
None of the other choices
In user space
Between the user interface program and the application Program - ✔️✔️Above the
hardware and under the user interface program
As one proceeds down the memory hierarchy (from inboard memory to offline storage),
which of the following conditions is correct? *
1/1
Decreasing access time
None of the other choices
Increasing capacity
Increasing cost per bit - ✔️✔️Increasing capacity
Which is not an example of a resource that is commonly time-multiplexed?
1/1
CPU
Main memory
Graphics accelerator
Network interface - ✔️✔️Main memory
Which of the main bus in the IBM PC computer that can run at 66 MHz and transfer 8
bytes at a time? *
1/1
ISA and PCI
None of the other choices
ISA (Industry Standard Architecture)
PCI (Peripheral Component Interconnect) - ✔️✔️PCI (Peripheral Component
Interconnect)
What is not a main function of an operating system? *
0/1
Provide the users with an extended (virtual) machine
Manage the I/O devices
Provide user interfaces
Support virtual memory - ✔️✔️Provide user interfaces
The general role of an operating system is to: *
1/1
, Manage files for application programs
Provide a set of services to system users
None of the other choices
Act as an interface between various computers - ✔️✔️Provide a set of services to
system users
Which is the fastest bus in the IBM PC computer? *
0/1
IDE (Integrated Drive Electronic)
ISA (Industry Standard Architecture)
USB (Universal Serial BUS)
PCI (Peripheral Component Interconnect) - ✔️✔️PCI (Peripheral Component
Interconnect)
Booting a general purpose computer involves the following steps except *
1/1
Loading the OS
Execution of a ROM-based POST sequence
Loading the command interpreter
Loading one or more bootstrap loaders - ✔️✔️Loading the command interpreter
List of memory location, that contains the executable program, the program's data, and
its stack is called: *
1/1
address memory
all of the other choices
address space
set of resources - ✔️✔️address space
What is interrupt vector? *
1/1
The addresses of interrupt handlers
Part of memory which contains the addresses of interrupt handlers
A signal an I/O device sends to CPU
None of the other choices - ✔️✔️Part of memory which contains the addresses of
interrupt handlers
The four main structural elements of a computer system are: *
1/1
Processor, Registers, Main Memory, System Bus
Processor, Registers, I/O Modules, Main Memory
None of the other choices
Processor, Main Memory, I/O Modules, System Bus - ✔️✔️Processor, Main Memory,
I/O Modules, System Bus
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