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comptia core 2 > obj 3 > Flashcards

obj 3 Flashcards

1
Q

bluescreen and frequent shutdowns

A

startup and shutdown BSOD
use last known good, system restore, or rollback driver
reseat or remove the hardware
run hardware diagnostics

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2
Q

sluggish performance

A

task check for high CPU utilization
latest patches and drivers
check for available space and defrag
check for power-saving mode
scan for attackers

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2
Q

boot errors

A

can’t find operating system
boot loader replaced or changed
check boot drives
startup repair
modify the windows boot configuration database (BCD)

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3
Q

startup repair

A

missing NTLDR
Missing operating system
boots to safe mode

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4
Q

starting the systemm

A

device not starting (often a bad driver, remove or replace)
“one or more services failed to start” (bad/incorrect driver, check system files, check account permissions)

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5
Q

applications crashing

A

application stops working
check the event log
check the reliability monitor
reinstall the application

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6
Q

low memory warnings

A

your computer is low on memory
close large-memory processes
increase virtual memory

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7
Q

USB controller resource warnigns

A

USB devices contain buffers called endpoints
different devices require a different number of endpoints
the controller doesn’t have enough resources for this device
move the device to a different USB interface
match the USB interface to the device capabilities

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8
Q

system instability

A

general system failures
time for a full diagnostics
hardware diagnostic
check the operating system (run system file checker)

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8
Q

slow profile load

A

roaming user profile
network latency to the domain controller
client workstation picks a remote domain controller instead of local DC

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9
Q

time drift

A

a computer’s internal clock will time drift
the solution is to fix the symptom
enable automatic time setting

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9
Q

reboot

A

turning it off and on again
bug in your router software (reboot it)
applicatoin is using too many resources
memory leak slowly consumes all availabel RAM

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10
Q

restart devices

A

services (applications that run in the background)
similar issues as a normal process
view status in Task Manager

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10
Q

uninstall/reinstall/updates applications

A

application issues
settings > apps > apps and features
some options in the ctronol panel
run the application set up again

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11
Q

repair

A

install missing files
replace corrupted files
fix application shortcuts
repair registry entries
update or configure drivers

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12
Q

reset

A

remove all application data
a factory reset / original install

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13
Q

uninstall

A

remove the application

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14
Q

verify requirements

A

every OS and application publish a set of requirements
check with the manufacturer
harware and software requirements
Use System Information

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15
Q

add resources

A

check resource utilization
consider a long-term analysis
compare existing resources with manufacture requirements

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16
Q

system file checker

A

verify the integrity of the OS

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17
Q

startup repair

A

start from settings (settings > system > recovery)
also available from the advanced boot options

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18
Q

windows restore

A

start the system restore application (System > about > system application)
pick a restore point and let the system reboot

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19
Q

reimage or reload OS

A

windows is big
spend time trying to find the needle
many organizations have prebuilt images
windows include a reset option

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20
Q

update and patch

A

windows update
lots of flexibility
application must be patched

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21
roll back updates
updates are installed automatically by default view the history
22
rebuild windows profiles
profiles can become corrupted if a profile doesn't exist, its recreated
23
deleting windows profiles
login to the computer with Domain Administrator rights Rename the /Users/name folder back up the user's registry delete the registry entry
24
reconstructing windwos profiles
login to the computer with the user account login as Domain Administrator do not copy the entire profile
25
unable to access the network
slow performance, lock-up internet connectivity issues OS updates failures Reload or clean
26
false antivirus alerts
false antivirus message may require money to "unlock" your PC often requires a specific anti-malware removal utility or technique
26
desktop alerts
browser push notification messages disable browser notifications scan for malware
27
altered system or personal files
renamed system files files disappearing file permission changes access denied use a malware cleaner or restore from known good backup
28
browser securitry alerts
security alerts and invalid certificates look at the certificate details
29
browser redirection
instead of your google result, your browser goes somewhere else malware is the most common cause use an anti-malware / anti-virus cleaner
30
malware removal
this is almost the never best practice ideally, you should delete everything and start over there are reasons to remediate
31
remediate : update antivirus
signature and engine updates automatic vs manual your malware may prevent the update process
32
quarantine infected
disconnect from the network isolate all removable media prevent the spread
33
verify malware symptoms
odd error messages system performance issues Research the malware
34
disable system restore
restore points make it easy to rewind disable system protection delete all restore points
35
remediate: scan and remove
Microsoft and others malware specific stand alone removal apps there's really no way to know if it's gone safe mode pre-installation environment may require the repair or boot records and sectors
36
schedule scans and updates
built into the antivirus software task scheduler operating sytem updates
37
app issues
problematic issues restart the phone stop the app and restore update the app
37
enable system protection
now you're clean create a restore point
38
app fails to update
app does not update to a new version check the store to manually upgrade restart the device
38
app fails to close or crashes
app hangs app crashes restart the device update the app delete and reinstall the app
39
OS files to update
device OS will not update check available storage check download bandwidth try a different network connection reboot
39
battery life issues
bad reception aging battery disable unnecessary features check application battery usage
40
random reboots
a device reboots during normal opperating check the OS and app versions perform a hardware check contact tech support for optoins
41
connectivity issues
intermittent connectivity (move closer to access point, try a different one) no Wi-Fi connectivity (enable Wi-Fi, security key config, hard reset can restart wireless subsystem) no bluetooth connectivity (enable bluetooth, pair bluetooth) NFC not working (limited troubleshooting options, device may disable/enable NFC, reset) Airdrop not working (turn on wifi and bluetooth, check airdrop discovery options) screen doesn't auto rotate (disable rotation lock, restart app, restart device)
42
android package source
one malware is on a phone, it has a huge amount of access
43
developer mode
enabled developer-specific settings (USB debugging, memory statistics, demo mode settings) iOS and iPadOS ( enable using Xcode, must use macOS) android (enabled from settings, tap the build number seven times)
44
high network traffic
higher than normal network use check built-in data use reports use a third-party reporting app run a malware scan
44
root access/ jailbreaking
mobile devices are purpose built systems android - rooting iOS - jailbreaking install custom software uncontrolled access
44
application spoofing
install what appears to be a legitimate app always check the source of a download
44
limited or no internet connectivity
malware doesn't want to be removed disable and enable Wi-Fi restart the device perform a malware scan
45
data-usage limit notificatoin
built-in android feature set a warning and a limit can indicate a malware infection run a malware scan
45
sluggish response time
running slow restart check for OS and app updates close apps that are not in use factory reset
46
high number of ads
malware wants to show you ads may be difficult to find run antimalware utility
46
leaked personal files
unauthorized account access determine cause of data breach factory reset and clean install check online data sources
47
fake security warnings
the easiest way to get on a phone the warnings seem legitimate malware can directly access user data don't click
47
unexpected application behavior
apps unexpectedly close app doesn't seem to have all of the normal features high battery use update the app

comptia core 2 (4 decks)

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