Thẻ ghi nhớ: OSG202 Chapter 1 | Quizlet

As one proceeds down the memory hierarchy (from inboard memory to offline storage), which of the following conditions is correct?

Increasing cost per bit

Decreasing access time

None of the other choices

Increasing capacity

D

Which is not an example of a resource that is commonly time-multiplexed? *

0/1

CPU

Main memory

Graphics accelerator

Network interface

B

Which of the following instructions should be allowed only in kernel mode? *

1/1

Change the memory map

Disable all interrupts

Set the time-of-day clock

All of the other choices

D

Which of the following is not a step in the boot process? *

1/1

Configuration and customization settings are checked

The operating system is loaded into RAM

The antivirus program checks all files for viruses

The BIOS is activated by powering on the CPU

C

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

ISA (Industry Standard Architecture)

PCI (Peripheral Component Interconnect)

None of the other choices

C

Which of the following instructions should be allowed only in kernel mode? *

1/1

ADD of two numbers

AND of two numbers

Disable all interrupts

Read the time-of-day clock

C

The general role of an operating system is to: *

0/1

Provide a set of services to system users

None of the other choices

Act as an interface between various computers

Manage files for application programs

A

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

C

List of memory location, that contains the executable program, the program's data, and its stack is called: *

0/1

set of resources

address space

all of the other choices

address memory

B

Examples of general purpose stored program computers include the following except *

1/1

Personal computers

Network servers

Workstations

MP3 player

d

The two basic types of processor registers are: *

1/1

None of the other choices

General and special registers

Control and Status registers

User-visible and user-invisible registers

b

An operating system *

1/1

Manages hardware resources in a computer system

Manages software resources in a computer system

Deals with complex hardware resources and provides the user a virtual/extended machine that is much easier to deal with than the physical machine

All of the other choices

d

Which of the following statements about Random Access Memory (RAM) is correct? *

1/1

Can only be read sequentially

Is volatile

Is typically faster than cache memory

Stores all the files on the computer

B

Which of the following instructions should be allowed in user mode? *

1/1

Disable all interrupts

Read the time-of-day clock

Set the time-of-day clock

Change the memory map

b

Which of the following actions generates an external interrupt? *

0/1

A system call instruction is executed.

An input/output operation is completed.

Division by zero occurs.

A page that does not exist in the main memory is accessed by the virtual storage management.

b

Which of the following statements about the CMOS is incorrect? *

1/1

To contain BIOS

Is volatile

To hold the current time and date

To hold the configuration parameters

a

The language of the CPU is known as its *

0/1

Control unit set

Register set

None of the other choices

Instruction set

d

The four main structural elements of a computer system are: *

1/1

Processor, Registers, I/O Modules, Main Memory

Processor, Registers, Main Memory, System Bus

Processor, Main Memory, I/O Modules, System Bus

None of the other choices

c

Where is the position of the operating system in computer system: *

1/1

In user space

None of the other choices

Between the user interface program and the application Program

Above the hardware and under the user interface program

d

As one proceeds down the memory hierarchy (from inboard memory to offline storage), the following conditions apply: *

1/1

Increasing access time

All of the other choices

Increasing capacity

Decreasing cost per bit

b

A CPU may have multiple execution units, so that can carry out multiple instructions in the same time is called: *

1/1

Multicore

Superscalar

Pipeline

None of the other choices

b

As one proceeds down the memory hierarchy (from inboard memory to offline storage), which of the following conditions is correct? *

1/1

None of the other choices

Increasing cost per bit

Decreasing capacity

Increasing access time

d

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)

d

A CPU may have two or more complete processors, so that can carry out multiple threads in the same time is called: *

1/1

Pipeline

None of the other choices

Multicore

Superscalar

c

Which of special register in the CPU points to the top of the current stack in the memory? *

1/1

SP

PC

PSW

IR

a

A special register that contains the address of the next instruction to be fetched is called: *

1/1

All of the other choices

Instruction Register (IR)

Program Counter (PC)

Program Status Word (PSW)

c

The main bus in the IBM PC computer are: *

0/1

None of the other choices

PCI (Peripheral Component Interconnect)

ISA (Industry Standard Architecture)

ISA and PCI

d

Which of special register contains the condition code bits, the CPU priority, the mode bit and other control bits)? *

1/1

Program Counter (PC)

Instruction Register (IR)

None of the other choices

Program Status Word (PSW)

d

Which of the following is not a operating mode of CPU *

1/1

Management mode

Kernel mode

User mode

None of the other choices

a

What is interrupt vector? *

1/1

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

d

Which of the following statements about the CPU's handling interrupts is incorrect? *

1/1

The hardware saves the old PC location

The processor ceases to execute the current sequence of instructions

None of the other choices

The CPU branches to a new instruction sequence

c

Which of special register contains the Mode Bit (user or kernel)? *

0/1

None of the other choices

Program Counter (PC)

Program Status Word (PSW)

Instruction Register (IR)

c

As one proceeds down the memory hierarchy (from inboard memory to offline storage), which of the following conditions is correct? *

1/1

Decreasing capacity

Decreasing access time

Decreasing cost per bit

None of the other choices

c

A CPU may have separate fech, decode and execute units, so that can carry out three steps of the three instructions in the same time is called: *

0/1

Superscalar

Pipeline

None of the other choices

Multicore

b

The ways that input/output can be done is? *

1/1

Interrupt

Busy waiting

All of the other choices

DMA (Direct Memory Access)

c

Which is not an example of a resource that is commonly space-multiplexed? *

0/1

CPU

Main memory

Video RAM

Hard drive

a

What part of the boot process determines whether the peripheral devices are working properly? *

0/1

ROM

CMOS

BIOS

POST

d

Information that must be saved prior to the processor transferring control to the interrupt handler routine includes: *

1/1

None of the other choices

PSW and Contents of processor registers

PSW and PC

PSW

c

Booting a general purpose computer involves the following steps except *

1/1

Execution of a ROM-based POST sequence

Loading the OS

Loading one or more bootstrap loaders

Loading the command interpreter

d

Which of the following statements about Electrically Erasable PROM (EEPROM) is correct? *

1/1

Can be erased and rewritten

Volatile

None of the other choices

Unprogrammable

a