lab oratorios final 1-10

8/8/2019 Lab Oratorios Final 1-10

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Take Assessment - Practice Final Exam for ch 1-10 - IT Essentials: PC Hardware and Software (Version 4.1)

1 Principio del formulario

Which environmental factor helps ensure optimal performance for laptops?

The humidity level should always be below 20 percent.

Temperature should be preferentially between 45 to 90 degrees Fahrenheit (7 to 32 degrees Celsius) to avoid overheating.

In dusty conditions, laptop vents should be partially covered to prevent the internal components from getting dirty.

Laptops should be cleaned every month or the internal components will be damaged.

Final del formulario


A technician powers on a computer and opens a web page. A message that the web page could not be found appears. After checking the URL, the technician verifies that thisis the problem that was reported by the computer owner. What would be the next step in the troubleshooting process for the technician?

Replace the NIC.

Replace the network cable.

Verify user permissions.

Verify the computer IP address information.



A network specialist has been hired to install a network in a company that assembles airplane engines. Because of the nature of the business, the area is highly affected byelectromagnetic noise. Which type of network media should be recommended?

Category 5e

coaxial

fiber optic

UTP



What characterizes a DDoS attack?

Many hosts participate in a coordinated attack.

Infected computers are called Daemons.

It is easy to identify the source of the attack.

All hosts must be in the same geographic area.



A technician is troubleshooting a computer that is experiencing hardware failure detected by the BIOS. What is one way this failure is indicated?

The computer automatically boots into Safe Mode and displays a warning on the screen.
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The screen flashes with a red background and displays a warning message.

The computer emits a pattern of beeps indicating the failing device.

The computer returns an error message indicating the I/O address of the failing device.



What are the four layers in the TCP/IP reference model? POR FAVOR VERIFICA POR QUE COLOQUE LA 3 Y ESTABA MAL PERO ESTOY SEGURA Q ES ESA

HTTP, TCP, IP, Ethernet

TCP, IP, Ethernet, IEEE

application, transport, internet, network access

application, presentation, session, transport

physical, data link, network, transport



What is the default subnet mask for a Class A network?

0.0.0.255

0.0.255.255

0.255.255.255

255.0.0.0

255.255.0.0

255.255.255.0



Refer to the exhibit. Which type of removable media is depicted?

hard disk

USB optical drive
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biometric authentication

Bluetooth



A technician notices that an application is not responding to commands and that the computer seems to respond slowly when applications are opened. What is the bestadministrative tool to use correct this problem?

Task Manager

Add or Remove Programs

Event Viewer

System Restore



A laptop user has noticed that connecting an external monitor, keyboard, and speaker each day is causing damage to the laptop connectors. What can the user do to prolongthe life of the connectors?

Obtain devices which are specially designed for heavily used laptops.

Use only PCI devices.

Attach all of the devices to a USB hub.

Use a docking station.



Which key or key sequence pressed during the boot process will allow a user to restart a Windows PC using the last known good configuration?

F1

F8

F12

Alt-Z

Windows key



A technician has been asked to find how a hacker keeps breaking in to a computer. Which security precaution was most likely missed when the operating system was firstinstalled?

A user account was not created.

The hard drive was not formatted with NTFS.

The OS product key was not entered.
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A password was not assigned to the default administrator account.



16 Principio del formularioWhen starting a computer, a customer can no longer select two of the operating systems that are installed. Which file may be corrupted and causing this error?

BOOT.INI

STARTUP.INI

SYSTEM.INI

WIN.INI


17 Principio del formularioA customer is experiencing repeated paper jams on a laser printer. Which quick solution might correct this problem?

Power cycle the printer.

Download and install a new printer driver.

Replace the paper in the input tray with new paper.

Remove and replace the primary corona wire.



Once a technician understands a customer complaint, it is common to ask close-ended questions. Which question is a close-ended one?

What happened before the error occurred?

Is this the first time the error occurred?

What happened after the error occurred?

What error messages were displayed when the error occurred?



When installing a network adapter into a client computer, a technician notices that the contacts on the adapter need to be cleaned. Which solution should the technician use toclean the contacts?

glass cleaner

isopropyl alcohol

mild detergent

rubbing alcohol

slightly abrasive cleanser



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Fans that are used to help cool a system are commonly placed on which two components? (Choose two.)OJO VERIFICARPORQUE ME APARECE MAL

sound card

CMOS

video card

RAID card

CPU



After Windows XP has been installed, which program would a technician use to select the programs that will run at startup?

Ntldr

Regedit

Msconfig

Task Manager



A technician has installed and configured an external projector on a laptop. What is the final task the technician must perform for the image to be displayed through theprojector?

Press the function key sequence to activate the image on the projector.

Disconnect the laptop from AC power.

Reboot the laptop into dual monitor mode.

Turn audio and video off on the laptop and on for the projector.



Which type of standard interface allows users to connect and disconnect peripheral devices while the computer is running without having to restart?

IDE

SATA

PATA

USB



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Which type of power connector is used to connect devices such as optical drives and hard drives?

20-pin

24-pin

Berg

Molex

P8

P9



A technician installed Windows XP on a 20 GB SCSI drive but when the computer is started a NTLDR error message is displayed. Based on this information which file wasmost likely corrupted during installation?

NTBOOTDD

HAL

NTSCSILDR

NTWINHAL



Refer to the exhibit. Which type of device uses the connector shown in the graphic?

DVD drive

Keyboard

NIC

RAM

sound card



A student wishes to buy a computer suitable for game playing. What CPU speed would be appropriate for game playing?

44.1 MHz


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100 MB/s

3 GHz

1 TB



Which type of scanner generally has high costs but produces top-quality images?

all-in-one

Drum

handheld

flatbed



Which two memory types are installed using Dual Inline Memory Module (DIMM) slots? (Choose two.)

cache memory

DDR SDRAM

FPM DRAM

SDRAM

SRAM



A network administrator has finished migrating from a peer-to-peer network to a new client-server network configuration. What are two advantages of the new configuration?(Choose two.)

The total cost of the new solution is considerably lower.

Data is more secure in the event of hardware failures.

Individual users are in control of their own computers and network resources.

Data resources and access are centrally controlled.

Personnel costs are lower because a dedicated network administrator is no longer necessary.



A user reports that a printer is printing unknown characters on documents. What is a possible solution to this issue?

Replace the toner or ink cartridge.

Uninstall and reinstall the printer driver.


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Replace the paper with some from a new ream.

Delete the print job from the queue and print again.



The company ABC reports that unauthorized communication from outside the network has caused serious problems in the finance department. Which software tool will helpprevent this situation from occurring again in the future?

antivirus program

Firewall

network analyzer

spyware program



Refer to the exhibit. Which sequence of steps describes the printing process used by a laser printer?

1,2,3,4,5,6

2,5,3,4,1,6

3,4,1,6,2,5

4,2,6,5,3,1



What must be done before a technician cleans a very dirty LCD screen on a laptop?

Place the laptop in standby mode.

Remove the screen from the laptop.

Remove the battery.

Enable the autoclean setting in the BIOS.



The IT department reported that the web server is receiving an abnormally high number of web page requests from different locations simultaneously. Which attackcharacterizes this type of situation?


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adware

DDoS

phishing

social engineering

spyware



A Windows XP laptop user finds that the low battery alarm does not give enough warning. Where can the user adjust the alarm setting to issue an earlier warning?

in Power Options Properties

in the BIOS

in the System Tray on the desktop

on the battery



A customer is considering an inkjet printer to print batches of colored documents that will be immediately stacked and packaged for shipping. What advice should a techniciangive the customer?

The resolution of an inkjet printer is too low for this work.

An inkjet printer has limited color capability.

Immediately after printing, the ink is wet.

An inkjet printer is a high cost option.



Which steps lead to the window where the performance settings can be changed on a Windows XP computer that is using the classic view display?

Choose Start > Control Panel > System > Advanced > Performance area.Choose the Settings button.

Choose Start > Control Panel > System > Hardware > Device Manager > View > Resources by type

Choose Start > Control Panel > Administrative Tools > Performance area > VMem

Choose Start > All Programs > Accessories > System Tools > System Restore



Which power management method offers the most power management features?

ACPI

AMP


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APM

UPS

WPM



Which three rules increase the level of password strength? (Choose three.)

Passwords should never expire.

Passwords should be a combination of letters and numbers.

Passwords should combine a user's special dates and initials so they can be alphanumeric.

Passwords should be changed by the user after specific periods of time.

Password expiration and lockout policies should be clearly defined.

Passwords should be short to reduce the chances of users forgetting them.



Which port is used only for input?

PS/2

component

speaker

DVI

parallel



A customer complains that a scanner has suddenly stopped producing clear images. Which preventive maintenance task has the customer most likely forgotten to do?

update the firmware

visually inspect the scanner glass

remove dust from the fans

inspect the scanner cables



The driver for a network interface card has been updated on a Windows XP computer. All network access has been lost. Which steps in the Windows XP Classic View shouldbe followed to roll back the network interface card driver?

Choose Start > Settings > Control Panel. Double-click System. Click the Hardware tab. Choose Device Manager. Double-click the NIC adapter. Click the Drivertab.Click the Roll Back Driverbutton.


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Choose Start > Settings > Control Panel. Double-click Network Connections. Right-click the NIC. Choose Properties > Uninstall.

Choose Start > Settings > Control Panel. Double-click System. Click the Hardware tab. Choose Device Manager. Choose Action > Uninstall.

Choose Start > Settings > Control Panel. Double-click Add or Remove Programs. Click Change.



Which two items are considered proper cleaning tools? (Choose two.)

compressed air

antistatic mat

soft cloth

antistatic wrist strap

flat-head screwdriver



Employees in the financial department have reported that an unknown technician has been asking questions about the network. Which type of attack might the employees beobserving?

phishing

social engineering

spoofing

spamming


Principio del formulario

What guideline should be followed when establishing a password security policy?

Passwords should be physically stored in a convenient location.

Passwords should contain mainly numbers for better encryption.

The system administrator should assign passwords to the users.

Lockout policies should be avoided in order to increase user access.

An expiration period should be established so that passwords frequently change.



Which program checks for installed hardware during the Windows XP boot process?

HALL

NTLDR
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NTDETECT

NTOSKRNL


48 Principio del formularioA customer who owns a business that creates high-quality color graphic images wants a new printer. The customer already has an ink-jet printer. Which type of printer wouldbe a good recommendation?

dot-matrix

solid-ink

daisy-wheel

thermal



What is the purpose of using thermal compound when installing a CPU, a heat sink, and a fan assembly on a motherboard?

to insulate the CPU from the heat sink

to attach the heat sink firmly to the CPU

to conduct heat that is generated by the CPU to the heat sink

to ensure an electrical connection between the CPU and heat sink

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lab oratorios final 1-10

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