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COMPTIA A+ ALL IN ONE REVIEW > 4 > Flashcards

4 Flashcards

(50 cards)

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1
Q

what is an illegal character in a Linux filename?

A

anything except forward slash ( / ) used exclusively as a path separator

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2
Q

which command pauses after displaying a screen’s worth of directory contents?

A

The ls | more and dir /p command in linux and windows, respectively, pause a long listing at the end of the page

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3
Q

which command will delete all of the files in a directory in Linux?

A

type rm * and press ENTER to delete all files in a directory in linux

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4
Q

which command do you use to determine your exact folder location (path) in Linux?

A

pwd command determines the current folder location in linux

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5
Q

what windows command is functionally equivalent to the Linux ls command?

A

the windows dir command

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6
Q

what do you type before a Linux command to access help for that command?

A

access the help for a linux command by typing \

man [command name]

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7
Q

which command will show detailed information about the contents of a folder?

A

type ls -l and press ENTER to see detailed information about the contents of a folder in linux

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8
Q

what command identical in both windows and Linux will tell you the name of the computer?

A

type hostname and press ENTER to discover the hostname for just about any computer

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9
Q

describe the function of the windows gpresult command

A

lists group policies applied to a user

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10
Q

how do you run a command at the windows command prompt with administrator privileges

A

Run command prompt as Administrator

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11
Q

which utility is useful in identifying a program that is hogging the processor?

A

task manager

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12
Q

which windows utility uses points in time that enable you to return your system to a previous date and state

A

system restore uses restore points- snapshots of a system at a given point of time

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13
Q

a windows 8.1 computer isn’t performing as well as it once did. what option can he use to reset his system without deleting any personal files or changing any settings

A

refresh your pc in windows 8 and later will rebuild windows but preserve all user files and settings
reset your pc remove all apps programs, user files, user settings and presents a fresh install of windows

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14
Q

what can device drivers and failing hardware in Mac OS X and linux cause?

A

device drivers and failing hardware can trip up Mac OS X and linux and create a kernel panic, which can bring the system down

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15
Q

which of the following points to a hardware or CMOS problem rather than a OS problem with a PC that wont boot

A

a black screen with an “invalid boot disk” error points to a hardware or CMOS problem with a pc that wont boot

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16
Q

a computer has an error that says bootmgr is corrupted

what tool can be used to fix this

A

the bcdedit program can fix a corrupted bootmgr

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17
Q

what does microsoft call the 32- and 64- bit installation environment in Windows 7?

A

microsoft calls the 32- and 64- bit installation environment in windows 7 the windows preinstallation environment or WinPE

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18
Q

you suspect a bad RAM stick is causing windows to fail at boot. what default windows tool can he use to check the RAM?

A

use the Windows Memory Diagnostic Tool to scan his RAM

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19
Q

which command will repair a damaged master boot record in a windows 8 pc?

A

run bootrec /fixmbr in the windows RE to repair a damaged master boot record in a windows 8 pc

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20
Q

which feature in windows 7 enables you to right click a file or folder and restore previous versions of that file or folder?

A

the System Protection feature in windows 7 enables you to right click a file or folder and restore to previous versions of that file or folder

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21
Q

upgrading which component of a host machine would most likely enable you to run more virtual machines simultaneously?

Study These Flashcards
A

RAM, upgrading a hard drive could help but RAM is a better answer

22
Q

what is difference between a VM and an emulator

Study These Flashcards
A

an emulator converts from one platform to another, whereas a virtual machine mirrors the host machine

23
Q

what feature lets you save a VM’s state so you can quickly restore to that point?

Study These Flashcards
A

snapshot or checkpoint, not to be confused with a true backup

24
Q

what do you need to install a legal copy of windows 8.1 into a virtual machine using VMware Workstation?

Study These Flashcards
A

you need a copy of the windows installation media to install windows

25
what is an advantage of a virtual machine over a physical machine?
hardware consolidation
26
user wants to start a new photo sharing service for real picture of bigfoot but doesnt own and servers? how can they quickly create a new server to run the service
using the public cloud will enable user to quickly create the servers she needs
27
after the failure of bigfoot pic sharing service, bgFootr- which got hacked because they didnt stay on top of their security updates; new idea for loch ness monster sighting service. what service would keep the user from playing system administrator?
by switching to a PaaS (Platform as a service), user can concentrate on creating the service and leave the lower level administration up to the PaaS provider
28
powerful hypervisors like ESXi are often booted from-
a good hypervisor can be tiny, loading from something as small as a USB thumb drive
29
when a virtual machine is not running how is it stored?
VMs are just, files, usually stored on a hdd
30
BigTracks is a successful bigfoot tracking company that uses an internal service to manage all of its automated bigfoot monitoring stations. a bigfoot migration has caused a massive increase in the amount of audio and video sent back from their stations. In order to add short term capacity they can create new services in the public cloud. what model of cloud computing does this describe?
hybrid cloud by connecting its internal private cloud to a public cloud to quickly expand capacity
31
what do you call the time it takes for all the sub-pixels on the panel to go from pure to pure white and back again?
response rate
32
what provides the illumination for LCD monitors
backlight
33
user wants to connect his new MacBook Pro to an LCD monitor that has a Digital Visual Interface. what type of adapter should he use?
Thunderbolt-to-DVI adapter to connect his new MacBook Pro to the LCD monitor
34
how do you measure the brightness of a projector
lumens
35
what is 1080p resolution
1920 x 1080
36
what is the processor on a video card called
GPU
37
what microsoft API supports 3D graphics
DirectX
38
what two technologies are used for backlight in LCD monitors
LED and CCFL (cold cathode fluorescent lamp)
39
a customer calls complaining that his TV looks awful when he connects it to his laptop. what could cause this problem?
plasma display panels (PDPs) offer a good alternative to LCDs for television but not as computer displays
40
a client calls complaining that his new LCD monitor is flickering what is likely the problem
LCD monitors a fixed refresh rate, so the most likely cause here is the CCFL backlight is failing. LED backlights don't flicker
41
windows cant connect to the internet, its a DHCP problem. what program should you run to troubleshoot his DHCP problem from the client side?
run ipconfig /release and then ipconfig /renew to get a new IP address, this typically resolves most DHCP client side problems. ifconfig for linux and mac
42
what command would you use to view the path taken by an ethernet packet?
tracert command traces the path a data packet takes to get to its destination traceroute utility for linux and mac
43
which of the following is the correct net syntax for discovering which network shares on a particular server are mapped on your computer?
use net view \\fileserver
44
what small device enables you to test a NIC's circuitry
a loopback plug will test the NIC's ethernet port and circuitry
45
which command can be used to display the cached NetBIOS names for a windows system?
Nslookup and dig only work with DNS, not NetBIOS, Nbtstat -a is for querying a remote system's name, but netstat -c displays the cached names.
46
you notice the activity light on the Network Interface Card is blinking erratically, is there a problem?
no, the light should be blinking to show activity this is normal
47
what is a common symptom of a bad network cable?
if there are no link lights, you probably have a bad network cable
48
what command line utility would you run to show a list of network computers?
use net view command
49
what benefit does full-duplex offer?
enables NICs to send and receive signals at the same time
50
what do most techs call a toner or tone generator?
Fox and Hound, the name of a popular brand of tone generator

COMPTIA A+ ALL IN ONE REVIEW (6 decks)

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