A bottleneck - True

A benchmark - False

Latency - False

Backup - False

1. Which of the following can be a bottleneck in a computer?

• Bus speed
• Cache speed
• Amount of RAM

I, II, and III - True

I and II only - False

II and III only - False

I and III only - False

1. Use of which of the following can help identify the bottlenecks in a computer system?

Benchmarks - True

Bandwidth - False

A cache - False

Bus speed - False

1. Each layer of software only needs a limited amount of information to perform its task, and none of the other layers has access to that information. This concept is known as

Encapsulation - True

Abstraction - False

Polymorphism - False

Application - False

1. Which of the following terms characterizes the use of an interface as the only medium through which a layer of software can be accessed?

Abstraction - True

Encapsulation - False

Polymorphism - False

Application - False

1. The helper program that the operating system uses to communicate with a specific model of a device is known as the

Device driver - True

BIOS - False

User interface - False

Kernel - False

1. The heart of the operating system that performs the functions that are most crucial for keeping everything running is the

Kernel - True

BIOS - False

API - False

User interface - False

1. The BIOS resides in a _____ chip on the motherboard.

ROM - True

RAM - False

CMOS - False

SDRAM - False

1. How many processes can be in a running state on a single CPU at any instant in time?

One - True

Four - False

Two - False

Eight - False

1. Which Windows operating system utility can be used to see what processes are currently running?

Task Manager - True

Device Manager - False

Add/Remove Programs - False

Disk Defragmenter - False

1. Which of the following is a signal to the processor that some event has occurred that requires immediate attention?

An interrupt - True

A process - False

A kernel - False

A driver - False

1. The notion that some interrupts, such as a disk interrupt, must be handled before other interrupts, such as a keyboard interrupt, is known as

Interrupt priority - True

Nested interrupts - False

Traps - False

Faults - False

1. The notion that the processing of one interrupt can be suspended in order to process another interrupt is known as

Nested interrupts - True

Interrupt priority - False

Traps - False

Faults - False

1. Which of the following is an event similar to an interrupt, except that instead of being triggered by an external signal, it is generated by the execution of processor instructions?

A trap - True

A fault - False

A nested interrupts - False

An IRQ - False

1. Which of the following occurs when the computer's hardware is requested to do something that it cannot do, such as access a nonexistent memory location?

A fault - True

A trap - False

A nested interrupts - False

An IRQ - False

1. In Windows, to adjust display properties such as resolution or color scheme, the user right-clicks on an empty spot of the desktop and clicks _____ on the shortcut menu.

Properties - True

Configure - False

Refresh - False

New - False

1. A Windows utility called _____ can be used to view information on the drivers and resources that pieces of hardware are using.

Date: 2015-12-18; view: 765