Os & Device Foundation : Chapter 4 Practice ?s

During the POST, you receive a message stating: Keyboard not present. What are the most likely causes of this error message?

A poor keyboard connection A stuck key on the keyboard

Which of the following terms describes the difference between white and black in an LCD monitor?

Contrast ratio Explanation: The contrast ratio identifies the relative difference between white and black. A higher contrast ratio means a better screen.

Which of the following video card connectors provides digital video output?

HDMI DVI-D

Which of the following is true of most newer SATA drives?

Thy can be added to or removed from a system without shutting down the computer.

What type of peripheral device is typically found on a notebook computer and allows the user to control the cursor with a finger?

Touch pad Touch pads are typically found on notebook computers and are used in the place of a mouse. Users slide their finger on the touchscreen pad to manipulate the cursor

Which of the following is considered an input devices? Hard disk Monitor RAM Touchscreen

Touchscreen Explanation: A touchscreen is considered an input device. A touchscreen is a monitor that can receive input through touch

What type of USB 3.0 connector is shown here?

Type-A Explanation: The blue tab indicates that the connector is a USB 3.0 Type-A connector and capable of USB 3.0 speeds. USB 3.0 Type-A connectors are backwards compatible with all previous USB versions

What is the most common interface for peripheral devices?

USB

Which of the following standards provides for data transfers up to 480 Mbps with a maximum cable length of 5 meters?

USB 2.0

For which type of device will you typically install the driver before you connect the device to your system?

USB devices

You have just installed several devices at once to a computer, but now the computer fails to boot properly. What should you do?

Remove all of the newly added devices and install them one at a time.

You have just installed a new hardware device, upgraded the driver, and installed the custom software that came with the device. Now you can't get the device to work. What should you do first?

Run any diagnostic software that came with the device.

You have purchased an LED monitor and connected it to the HDMI port on your computer using an HDMI cable. You configure the screen resolution to 1280 x 1024 with 32-bit color. The geometry of the images displayed on the screen appear to be distorted. What should you do to correct the problem?

Set the display resolution to the native resolution of the monitor.

You have purchased an LED monitor and connected it to the HDMI port on your computer using an HDMI cable. You configure the screen resolution to 1280 x 768 wth 32-bit color. The images displayed on the screen appear to be overly large. What should you do to correct the problem?

Set the display resolution to the native resolution of the monitor.

You recently upgraded a client's older workstation from Windows 7 to Windows 10. The client has called to complain that the interface is very slow. For example, after clicking on the Start button, the Start Meno slowly appears on the screen. How can you fix this problem without upgrading the hardware itself?

Set the visual effects for best performance.

On a Linux system, what is the name of the directory where you will find a text file called devices that contains information about the devices that are configured on the system?

/proc

Match each IEEE 1394 connector type on the left with the appropriate description on the right. 1. Used with FireWire 400 devices and provides power via a 12 V wire 2. Used with Fireware 400 devices that must be self-powered 3. Used with FireWire 800 devices that are most commonly found on Apple computers

1. 6-pin connector 2. 4-pin connector 3. 9-pin connector

The IEEE 1394 (FireWire) standard is often compared to USB. Each standard has unique features. Drag the standard on the left to the appropriate feature on the right. 1. Capable of isochronous data transmissions 2. Provides up to 9 W of power via 5 wire 3. Provides up to 60 W of power via a 12 wire 4. Capable of asynchronous data transmission 5. Supports peer-to-peer transfers

1. IEEE 1394 (FireWire) 2. USB 3. IEEE 1394 (Firewire) 4. USB 5. IEEE 1394 (Firewire)

Match the peripheral devices on the left with the descriptions on the right. Each peripheral device may be used once, more than once, or not at all. 1. Used to scan hardware which contains an embedded microchip in for authentication 2. Used to capture some type of analog signal and convert it into digital data 3. Can be stand-alone devices or integrated with other peripherals, such as a keyboard 4. Used to scan user's unique physical features and use them to verify their identity. 5. Graphic tablets mostly used by graphic artists to capture hand-drawn images 6. Fingerprint scanner 7. Most commonly used in retail environments at checkout stands

1. Smart card reader 2. Digitizer 3. Smart card reader 4. Biometric scanner 5. Digitizer 6. Biometric scanner 7. Barcode reader Explanation: A digitizer captures some type of analog signal and converts it into digital data. Smartcard readers are used as an authentication method. A smart card, which contains embedded microchip, is inserted into the reader. The reader then scans the chip, verifies its contents, and authenticates the user. Smart card readers can be stand-alone devices or integrated with other peripherals Biometric scanners are a form of authentication. They are able to scan user's unique physical features and use them to verify their identity. A barcode reader is a device that scans barcodes. Barcodes are most commonly used in retail environments at checkout stands.

Match the USB connector types on the left with the image labels on the right. (Not all USB connector types will be used)

1. USB 2.0 Type-B 2. microUSB 3. miniUSB 4. USB 3.0 Micro-B

Match the USB connector types on the left with the image labels on the right. (Not all USB connector types will be used).

1. USB 3.0 Type-A 2. USB 3.0 Micro-B 3. USB 3.0 Type-B 4. USB 2.0 Type-A

Which IEEE version supports peer-to-peer transmission of data?

1394.3

What is the maximum cable length for the IEEE 1394a standard?

4.5 meters

What is the maximum data transfer rate of an IEEE 1394a device?

400 Mbps

Select the aspect ratio that applies to the display types listed. Which aspect ratio applies to displays with resolutions of 800x600 and 1600x1200 Which aspect ratio applies to displays with resolutions of 1680x1050 and 1920x1200 Which aspect ratio applies to displays with resolution of 1280x720 and 1920x1080

4:3 16:10 16:9

What is the maximum data transfer speed for USB 3.0 devices?

5 Gbps

Which the following are true of the SXGA screen resolution?

5:4 aspect ratio 1280 x 1024 Explanation: A SXGA (super extended) display has a resolution of 120 x 1024 and an aspect ratio of 5:4. VGA has a resolution of 1024 x 768, and UXGA has a resolution of 1600 x 1200. Widescreen aspect ratios include "W" in the name.

How many devices does a single IEEE 1394 bus support?

63

Which of the following devices would you add to a computer if you needed to take inventory at a retail store by scanning the UPC symbols on products?

Bar code reader Explanation: Installing a bar code reader will allow you to take inventory at a retail sore by scanning the UPC symbols on products. A scanner is used to scan documents. A touch screen is an interactive monitor for a computer. A trackball is a type of mouse.

You have a friend who is offering to sell the monitor and video card from his gamin system along with several PC games The games have fast moving graphics, and you want to be able to play them on your own home system. The monitor he is selling is an LCD TN with a 144 Hz refresh rate. The video card he is selling supports a max refresh rate of 144 Hz. You're sure you want to buy the games, but you have a couple of other choices when it comes to the monitor and the video card. The monitor in your current system had a 60 Hz refresh rate. The video card has a max refresh rate of 75 Hz. This configuration has always worked fine for watching videos. you're also looking at the new 60 Hz LCD IPS monitors and several high end video cars with max refresh rates of up to 240 Hz. Which of the following options will allow you to play the games on your home system with the best gaming experience?

Buy your friend's games, monitor, and video card. Swap out both your video card and monitor. Explanation: The LCD TN monitor with the 144 Hz refresh rate along with the video card with a max refresh rate of 144 Hz will give you the best gaming experience compared to other options.

You have purchased an LED monitor and connected it to the DVI-I port n your computer using the DVI-D cable. You configure the screen resolution to 1440 x 900 with 32-bit color. The display on the screen seems to be pixilated. What should you do to correct the problem?

Change the screen resolution to the native resolution of the monitor.

You purchased a 1600 x 1200 LCD monitor and connected it to the DVI-I port on your computer using a DVI-D cable. You configure the screen resolution at 1280 x 1024 with 24-bit color. The display output seems to be fuzzy and stretched. What should you go to correct the problem?

Change the screen resolution to the native resolution on the monitor. Explanation: LCD monitors have a native display resolution. The native display of this monitor is 1600 x 1200. While it might be possible to set the resolution lower than the native display, you should use the native display setting for the clearest picture.

A customer complains that a recently purchased monitor no longer displays a picture. You verify that the monitor is powered on and that the video able is securely fastened to the video port.

Check the monitor's brightness and contrast settings using the controls on the monitor.

You've purchased 10 new notebook systems for your users. You are concerned that users will leave the systems on for long periods of time, which could result in display burn-in. What should you do to prevent this from happening?

Configure a screen saver on each system.

How man pins are on a VGA connector?

D-shaped with 15 pins Explanation: A VGA/SVGA monitor uses a high-density (three-row) female DB-15 connector on the computer.

As a member of the help desk administration team you've been assigned to update the driver for the network adapter that is installed on most of the machines in your department. You have a copy of the latest driver on a USB flash drive. Which Windows utility will allow you to manually update this new driver?

Device Manager

Which system utility would you use to troubleshoot hardware devices, examine and control the resources used by specific devices, and install updated device drivers?

Device Manager

Which of the following devices typically use a microUSB connector?

Digital cameras Smartphones Explanation: microUSB connectors are typically used by compact, portable electronic devices, such as smartphones, digital cameras, GPS devices and some external storage peripherals.

Which of the following statement are true about the DisplayPort interface for connecting video monitors to the computer?

DisplayPort can send both video and audio signals over the same cable. DisplayPort use a lower voltage than DVI or HDMI Explanation: DisplayPort is an alternative to an HDMI connector. DisplayPort uses a different signal format than DVI or HDMI. However, DisplayPort supports sending DVI or HDMI signals over the same port using a simple adapter. DisplayPort uses a digital-only signal. To connect a VGA monitor to a DisplayPort, you will need a special active converter that reformats the signal for analog devices.

You have just connected a new USB device to your Windows system. You used he installation disc that came with the deice to install the drivers needed to support the device. After installation, the system frequently crashes when you try to access the new device.

Download and install the latest driver from the manufacturer's Website

You've just installed a new video card in a user's Window workstation. However, when you power the system on, the screen is displayed in 16 colors at 640x480 resolution. Which of the following will resolve this problem?

Download and install the latest driver from the video card manufacturer's website.

You have installed a new device in your Windows system. After installation, you can't use the device. You check Device Manager and find an icon for the device with a yellow exclamation mark over it. What should you do?

Download the latest driver from the manufacturer's Website.

You recently installed a fiber-optic network board in an expansion slot in your system's motherboard. You no longer need to use the integrated UTP network board that is integrated in the motherboard. Click the option you would use in the properties of the integrated network adapter Device Manager to disable it.

Driver

A user complains that his USB scanner no longer works. You check Device Manager and see an icon with a black down on it. What should you do?

Enable the device in Device Manager

Match the system resources on the left with the descriptions or examples on the right. Allows two devices in a computer to send information to each other The method used by different system devices to interact with the the CPU Conduits used by high-speed devices to bypass the CPU and communicate directly with RAM Allows a device to request processing time from the CPU Each device in a computer must have its own

I/O address IRQ (Interrupt Request) DMA (Direct Memory Access) IRQ (Interrupt request) I/O address

Most devices that you install in a system require little to no configuration; they simply work after you plug them in. This is because devices are automatically assigned the system resources needed for the device to begin functioning. What are the three types of system that are usually automatically assigned?

I/O address, IRQ, DMA channel

Which of the following standard provides for data transfer rates up to 800 Mbps with a maximum cable length of 100 meters?

IEEE 1394b

Your monitor is displaying images using strange colors. Which of the following is a solution to this problem?

Increase the color depth Explanation: To solve color shift problems, you need to increase the color depth. The color depth controls the number of colors that can be displayed on the screen at a time. The actual colors that are used on the screen is determined by the color palette. The number of colors in the palette is determined by the color depth.

You need to connect to a new USB scanner to the USB port on your computer. What should you do?

Install the scanner drivers, then connect the scanner to the USB port and complete the Add a Device wizard when it pops up. Explanation: To install a USB device, start by installing the driver. Then connect the device to the USB port. The operating system will detect the device and configure it automatically. The driver is used to tell the operating system how to communicate with the device

You have three computers in your office. You would like to reduce the time it takes to move from one computer to the next, and you would like to use only one keyboard, one monitor, and one mouse for all three computers. Which device will allow this type of setup?

KVM Explanation: A KVM (keyboard, video, mouse) switch would allow you to control all three computers with one keyboard, one monitor, and one mouse. The KVM has multiple input groups, with each group accepting keyboard, video, and mouse connections from a single computer. A single output group connects to the shared input/output devices. Buttons on the KVM switch or keyboard shortcut combinations allow you to toggle the input/output devices between computers.

You are putting together a system for a graphic artist and need to make sure you get a display that meets her needs. The display needs to have very good color reproduction quality and viewing angles. The display need to run cool and be power efficient. Which type of display is most likely to meet these needs?

LCD display with IPS panel

You are putting together a gaming system and need to make sure you get a display that meets your needs. The display needs to have a very good response time, you would prefer that it be affordable and power efficient.

LCD display with TN panel Explanation: LCD displays with TN panels are the most common technology used by LCDs. TN panels have very good response times (1-5 ms) and refresh rates (60-144 Hz), so they are great for PC gaming.

Which of the following is true of modern LCD monitors regarding backlighting?

LEDs are used to backlight the screen. Explanation: Modern LCDs use LEDs (light-emitting diodes) to backlight the screen.

You are trying to connect a new USB device to your computer. You install the driver, then connect the device to an open usb port The device does not work. What should you do first?

Make sure the USB device is plugged in properly.

What type of UB 2.0 connector is shown here?

MicroUSB Explanation: The microUSB connector is designed for smartphones and tablet devices. microUSB connectors are approximately half the thickness of miniUSB connectors.

Device manufacturers are constantly finding bugs, vulnerabilities, or better ways for their devices to communicate with the operating system. Because of this, what should you do before you install a new device?

Obtain the latest driver from the manufacturer's website before installing the device

You have installed a device in your system and have run the Add a device wizard from the Control Panel. Under what circumstance would it be appropriate with the wizard if the device was not discovered?

The device does not support plug and play Explanation: If the legacy device is not detected, you need to select the driver files manually by continuing the wizard.mAll devices require a driver.

You plug a USB 2.0 external storage device into a USB 3.0 port on your computer. Which of the following statements is true regarding the device?

The device will work, but will only transfer at USB 2.0 speeds Explanation: USB 3.0 ports are backwards compatible with all previous USB versions. However, they can only transfer as fast as the slowest version being used.

A user installs a new graphics application on her Windows system. During the installation process, the application prompts the user to load a custom video driver that has been optimized for the application. She does so and then completes the installation. Several days later, the user reports that her display doesn't seem to be working properly under some conditions. TO fix the problem, you need to reload the old video driver.

Use Device Manager to roll back the video driver Revert the system to a restore point prior to installing the video driver

What is the difference between UXGA and WUXGA displays?

WUXGA has a widescreen aspect ratio. Explanation: WUXGA uses a widescreen (16:10) aspect ratio. The aspect ratio describes the relative width and height of the screen. Though the screen for a WUXGA screen is larger in size, technically the resolution is similar to UXGA but it is adjusted for the wider aspect ratio.

In which of the following situations would driver rollback be the best tool to use?

You recently installed a new video driver and now the system behaves erratically