📚 CompTIA A+ Termes - Chapitre 10 🔄 Revision

🔤 Key Terms : Mobile Devices

Relis d'abord la liste complete des key terms du chapitre. Puis reponds au QCM : a chaque tentative, 15 termes sont tires au hasard parmi les 124 de ce chapitre, avec des definitions d'autres termes comme pieges.

Rappel des key terms (124)

Terme (EN)Definition (EN)FR
Android an open source mobile OS based on Linux, owned by Google, used mainly on phones/tablets Android
iOS Apple's closed-source mobile operating system, used only on Apple phones iOS
iPadOS Apple's operating system used on Apple tablets (iPads) iPadOS
Chrome OS Google's open source operating system used on Chromebooks Chrome OS
flash memory nonvolatile solid-state memory that keeps data even when power is off memoire flash
SD (Secure Digital) a family of flash memory card formats (SD, SDHC, SDXC, SDUC) used in mobile devices carte SD
memory card reader a device (USB or built-in) used to read/transfer data from flash memory cards lecteur de carte memoire
GPS the Global Positioning System; satellites providing location, movement, and time data GPS
laptop RAM the RAM installed in a laptop, often comparable in amount to a desktop's RAM RAM de portable
headset a wired or wireless accessory providing sound over one or both ears casque
webcam an integrated or USB camera used for video calls or recording webcam
speaker a built-in, wired, or wireless device that plays sound haut-parleur
stylus a pen-like tool used to provide input on a touch screen stylet
mobile docking station a stand that gives a mobile computer a stable base while traveling and can charge devices station d'accueil mobile
drawing pad a device used to draw, annotate, or write, popular with artists and engineers tablette graphique
track pad a USB or wireless device used to input drawings, annotations, or text pave tactile
track point a small tracking device used with an app to locate a lost item like a wallet traceur (tracker)
3G/4G/5G successive generations of cellular network technology, each faster than the last generations de reseau cellulaire
LTE a version of 4G technology optimized for video streaming and online games LTE
SIM a subscriber identification module card storing the IMSI, contacts, and authentication data carte SIM
eSIM a non-physical, embedded SIM allowing provider changes without swapping a card eSIM
cellular location service a service (also called a locator application) that uses location data to publish a device's position service de localisation cellulaire
developer mode an Android settings mode exposing tools that change how the device operates mode developpeur
Wi-Fi calling making a phone call over a Wi-Fi connection instead of the cell network appel Wi-Fi
USB-C a non-directional USB connector type that is now the standard on smartphones USB-C
Lightning port Apple's older 8-pin, non-directional proprietary connector, now replaced by USB-C port Lightning
microUSB a small USB connector type used on many older mobile devices microUSB
miniUSB an older, larger-than-micro USB connector type used on some mobile devices miniUSB
Bluetooth a short-range radio technology (PAN) used to connect nearby devices, in three range classes Bluetooth
2.4 GHz a radio frequency band used by Bluetooth and some Wi-Fi standards bande 2,4 GHz
5 GHz a radio frequency band used by several Wi-Fi standards bande 5 GHz
6 GHz a newer radio frequency band used by Wi-Fi 6 and Wi-Fi 7 bande 6 GHz
Airplane Mode a setting that disables all wireless radios (Wi-Fi, cellular, Bluetooth, GPS, NFC) at once mode avion
hotspot a wireless network that provides internet access, sometimes created by a phone point d'acces Wi-Fi (hotspot)
tethering sharing one device's internet connection with other nearby devices partage de connexion
NFC near field communication; lets two very close devices exchange data (payments, tags, peer-to-peer) communication en champ proche
IR infrared, a short-range, line-of-sight wireless technology used for remotes and similar devices infrarouge
data cap a limit on the amount of cellular data a subscriber can use before throttling or fees apply limite de donnees (data cap)
IMAP (see Email Configuration section) voir section email
POP3 a protocol (port 110) that retrieves email and saves it to the local device POP3
IMAP a protocol (port 143) that keeps email on the server, good for multiple devices/users IMAP
cloud storage remote storage that can be viewed, shared, or retrieved depending on the vendor stockage en nuage
contacts a type of data (address book entries) commonly synchronized between devices contacts
calendar a type of data (appointments/events) commonly synchronized between devices calendrier
OneDrive Microsoft's cloud storage/synchronization product, often used with Exchange/Outlook OneDrive
remote backup another name for synchronization/cloud backup, storing a copy of data remotely sauvegarde a distance
MDM (mobile device management) a tool that lets IT view, manage, update, and remotely wipe multiple mobile devices gestion des appareils mobiles
BYOD bring your own device: a policy letting employees use personal devices for work apportez votre propre appareil
configuration profile a set of customized settings applied to a device based on the employee's role profil de configuration
policy enforcement using MDM to make sure devices follow required security/configuration rules application des politiques
malware software designed to misbehave or spy on the user, which can also infect mobile devices logiciel malveillant
Wi-Fi analyzer an app that identifies nearby wireless networks and the channels/frequencies they use analyseur Wi-Fi
docking station a device letting a laptop act like a desktop, adding ports, expansion slots, and storage bays station d'accueil
laptop docking station a docking station specifically designed for a particular laptop model/brand station d'accueil pour portable
port replicator a device adding extra ports to a laptop, without expansion slots or drive bays repeteur de ports
miniPCIe a 52-pin expansion card slot in laptops, commonly used for wireless or cellular cards miniPCIe
M.2 a flexible expansion slot (various sizes/keys) used for Wi-Fi, Bluetooth, cellular cards, or SSDs emplacement M.2
NVMe Non-Volatile Memory Express; an SSD interface using the PCIe bus for very fast storage NVMe
SSD a solid-state drive; flash-based storage with no moving parts disque a etat solide
mSATA miniSATA; a small SATA connector type used for compact SSDs mSATA
wireless card an expansion card (miniPCIe, M.2, or USB) connecting a laptop to Wi-Fi/Bluetooth networks carte reseau sans fil
cellular card an expansion card connecting a laptop to the cell phone network carte cellulaire
scribe a plastic tool used to pry plastic covers/frames away from a laptop case without damage scribe (outil de demontage)
mobile motherboard a laptop's system board; similar to a desktop motherboard but usually vendor-specific carte mere de portable
special function key an Fn-combination key controlling things like brightness, Wi-Fi, or hibernation touche de fonction speciale
SODIMM small-outline DIMM; the compact memory module form factor used in laptops SODIMM
LPCAMM low-power compression attached memory module; a newer, faster, lower-power laptop memory format LPCAMM
DC jack the port on a laptop where the AC-to-DC power brick connects prise d'alimentation DC
CCFL cold cathode fluorescent lamp; an older laptop backlight type requiring an inverter lampe CCFL
inverter a component converting low DC voltage to high AC voltage for a CCFL backlight onduleur d'ecran
backlight the light source behind an LCD screen (CCFL or LED) retroeclairage
digitizer the thin layer that translates touch/stylus input into digital signals on a touch screen numeriseur (digitizer)
application spoofing when a malicious app pretends to be a different, trusted app to steal data or show unwanted ads usurpation d'application
malicious app an app containing malware such as a virus, ransomware, or spyware application malveillante
unauthorized app a pirated (bootleg) app that can cause security or OS issues application non autorisee
unexpected app behavior an app acting abnormally, which can be a sign of malware or a security issue comportement anormal d'application
high network traffic unusually high data activity, which can be a symptom of a security problem trafic reseau eleve
high number of ads an unusually large volume of ads, which can indicate malware or a compromised app nombre d'annonces eleve
degraded response time a device responding more slowly than normal, which can be a security symptom temps de reponse degrade
remote wipe a command that erases all data on a lost/stolen device, sometimes with a forensic-proof overwrite effacement a distance
fake security warning a fraudulent alert (OS, app, or browser) meant to trick the user into calling or clicking fausse alerte de securite
screen lock a security method (PIN, pattern, biometric, etc.) that locks a mobile device's screen verrouillage d'ecran
swipe lock a basic screen lock requiring a swipe gesture (little real security) verrouillage par glissement
PIN code a numeric code used to unlock a device or authenticate a user code PIN
security pattern a screen lock method requiring the user to draw a specific pattern schema de securite
facial recognition lock a biometric lock that unlocks a device by recognizing the user's face verrouillage par reconnaissance faciale
fingerprint lock a biometric lock that unlocks a device using a fingerprint reader verrouillage par empreinte
biometric a security method based on a unique physical trait, like a fingerprint or face biometrique
authenticator app an app providing an extra login verification code as part of two-factor authentication application d'authentification
device encryption an algorithm that makes stored data unreadable without the correct security key chiffrement de l'appareil
system lockout a device temporarily (or permanently) disabling access after too many failed login attempts verrouillage systeme
jailbreak removing iOS restrictions to gain elevated privileges on the device jailbreak
root access elevated (administrator-level) privileges on an Android device, often gained by unauthorized means acces root
factory reset restoring a device to its original settings, erasing apps and user data reinitialisation d'usine
BYOD (see Other Mobile Software Tools section) voir section outils logiciels
physically damaged port a connector port with visible physical damage, sometimes requiring a board replacement port physiquement endommage
liquid damage damage caused by a device getting wet; 'water resistant' does not mean waterproof degat des eaux
hard reset a factory reset used as a last resort when other fixes fail reinitialisation complete (hard reset)
OS fails to update a symptom where a mobile OS update will not complete successfully l'OS ne se met pas a jour
OS update (mobile) an update installing security patches and new features on a mobile OS mise a jour de l'OS mobile
app fails to close a symptom where an app crashes or won't respond to being closed normally l'application ne se ferme pas
app fails to install a symptom where an app will not complete installation l'application ne s'installe pas
app fails to launch a symptom where an app will not open/start l'application ne se lance pas
application update an update to a specific app, which should be tested before company-wide deployment mise a jour d'application
cursor drift a ghost cursor symptom where the pointer moves without anyone touching the trackpad derive du curseur
does not autorotate a symptom where the screen orientation fails to rotate with the device ne pivote pas automatiquement
dim display a symptom where the screen is unusually dark, often due to settings, battery, or backlight ecran sombre
no display a symptom where the screen shows nothing at all pas d'affichage
broken screen a physically cracked or damaged display, which may still partly function ecran casse
stylus does not work a symptom where the stylus fails to register input, often due to a dirty/worn tip or dead battery le stylet ne fonctionne pas
touch screen non-responsive a symptom where the touch screen does not react to touch input ecran tactile non reactif
touch calibration a process that realigns how the screen interprets touch/stylus input calibration tactile
degraded performance a device running slower than normal, for various possible causes performance degradee
random reboot a device restarting unexpectedly, possibly caused by overheating, power, or a misbehaving app/OS redemarrage aleatoire
poor battery health a battery that no longer holds a charge well or drains too quickly mauvaise sante de la batterie
swollen battery a battery that bulges (and might leak); should be replaced immediately batterie gonflee
battery not charging a symptom where the battery level does not increase while connected to power la batterie ne charge pas
improper charging a charging problem caused by the battery, charger, or connector charge incorrecte
overheating a device becoming too hot, which can cause shutdowns or battery drain surchauffe
intermittent wireless a wireless connection that comes and goes unpredictably connexion sans fil intermittente
no wireless connectivity a symptom where a device cannot connect to any wireless network aucune connexion sans fil
no internet connectivity a symptom where a device is on a network but cannot reach the internet aucune connexion internet
limited connectivity a network connection status indicating reduced or unreliable access connectivite limitee
no Bluetooth connectivity a symptom where a device cannot pair with or use Bluetooth aucune connexion Bluetooth

QCM (tirage aleatoire)

Q1. Which definition matches "Chrome OS"?

Q2. Which definition matches "webcam"?

Q3. Which definition matches "developer mode"?