Comptia a+

what is a laptop battery for?

the power source when unplugged

what are the two batteries used in a laptop?

lithium-ion (li-ion) & lithium-ion polymer (li-po)

what is the most used component on a laptop?

the keyboard

how do you remove the keyboard of a laptop on some devices?

remove a bezel or screws from keyboard then disconnect the ribbon cable

how can you run diagnostics on a laptop?

connect an external usb keyboard

how would you handle laptop keys?

follow instructions from the manufacturer to delicately repair, remove, or replace it

why is memory in laptops called?

random access memory (RAM)

what memory is used in laptops?

small outline dual inline memory module (SO-DIMM)

how do you repair laptop memory that is soldered to the system board?

a full system board replacement is required, no upgrade is possible

how do you add or replace memory in a laptop?

open the back of the laptop → remove/add memory → then push it down until it clips

what are the two words used to name the place where data is stored in laptops, & how many inches are they?

hard disk drive or magnetic disk that is 2.5inches

what is an SSD & what is it for?

solid state drive used for laptops

what does a ssd have that a magnetic disk doesnt?

all memory, no moving parts, silence, & fast

what do newer laptops have in regards to hdd?

a solid state drive m.2

what are the perk of an ssd m.2?

smaller, no sata data or power cables, & easy to install/replace

how do you replace a hdd/ssd?

open the back of the laptop → unscrew & remove the old drive → then insert & secure the new drive

why are m.2 drives easier to install ?

just need to unscrew one screw & install the new drive

what are the perk of an solid state drive compared to a hard disk drive?

more reliable, faster, & is like getting a new laptop

what does OS stand for?

operating system

what is the pro & con of installing an os to an ssd?

moves documents between drives but is time consuming

3 ways to transfer data from hdd to an ssd?

backup data using image/clone from original drive & copy it to ssd, create an image file, or drive to drive image

what do laptops use to have wireless connection?

802.11 or bluetooth

perks of 802.11 (wifi):

local area network (lan), high speed, & internet

perks of bluetooth:

personnel area network (pan), short range, & connects other devices

how do you insert wifi/ bluetooth into laptop?

remove laptop back panel → remove the wifi/bluetooth card → disconnect antennas

what antennas are part of a 802.11 card?

wifi main, aux, & sometimes bluetooth

where do the antenna wires from 802.11 go?

they wrap around the laptop screen & through the bottom of it to connect to the wifi antennas

what are biometrics for?

to sign in/unlock your laptop with fingerprint or face recognition

what is required to use biometrics?

an os & biometric hardware

what is used to wirelessly send data?

near field communication (nfc)

what do laptop cameras do?

captures video & audio

what are pros & cons of microphones on laptops?

built into the laptop but aren’t good for non casual use

other than charging your devices, what other reasons are mobile devices connected for?

synchronization, connectivity, backup, & identification

what does usb stand for ?

universal serial bus

what’s a usb used for?

to connect mobile devices, transfer data, & charging

perks of a micro usb:

smaller usb connection & more common

what kind of usb were used before micro usb’s?

mini usb

perks of usb-c plugs:

24 pin, double sided, & used for hosts and devices

what other signals can usb-c’s transmit?

displayport, hdmi, & thunderbolt

what is an apple proprietary?

a lightning connector w/ 8 pins

perks of apple proprietary:

higher power output, inserts either way, simple design

bluetooth definition -

connects mobile devices using high speed in short distances

what kind of network do bluetooth’s use ?

personnel area network (pan)

definition of a hotspot -

a personal wireless device router to multiple devices

definition of a tether -

a personal wireless device router to one device

stylus definition -

an advanced writing tool

headset definition -

a hands free audio

how do headsets connect to devices?

usb connections, tip ring ring sleeve (trrs) connector, audio jack, or lightning port

what does trrs stand for?

tip ring ring sleeve

speaker definition -

mobile audio

docking station definition -

quickly connect & disconnect a laptop without using cables

port replicator -

similar to a docking station but connects using usb

trackpad -

found on laptops & replaces a mouse

drawing pad -

an external digitizer/writer using a stylus

cellular networks-

separates land into cells to communicate through cell phones

how do cellular networks work?

antennas provide coverage for land that is within certain cells, with certain frequencies

what do cellular networks provide on mobile devices?

voice & data communication

what was 3G technology created for?

send & receive data through networks

what applications did 3G create?

gps, mobile television, video on demand, & video conferencing

what’s another reference to 4g?

long term technology (LTE)

what does LTE-A stand for ?

LTE advanced

what two things is 4g based on?

global system for mobile communications (GSM), aka enhanced data rates for gsm evolution (EDGE)

how is 4g’s LTE bandwidth better than 3g’s ?

it provides 150megabits

how many megabits does LTE-A provide & what is the perk of it?

300megabits & it increases the amount of data that can be sent over networks

what are the perks of 5g?

has higher frequencies, supports 10gigabits, & 100-900 megabits

what does iot stand for?

internet of thing

what impact does 5g have with iot?

less bandwidth constraint, larger data transfers, faster notifications, & more cloud processing

what are the pro’s of 802.11 networks?

provides high speeds, no cellular bandwidth use, allows voice, video, & data transfer

where is 802.11 network used?

at home & in office

what’s a con of 802.11?

has a local point so there is limited distance coverage

what does SIM stand for?

subscriber identify module

what is a SIM and what’s the purpose of it?

it’s a tiny physical card often placed in phones & an identifier for cellular devices

what information does a SIM contain?

sim id, phone number, cell network information, storage for contacts, messages, & more to be moved to other phones

what does eSIM stand for & what’s the difference from the original ?

embedded SIM & is an electronic version that can’t be removed physically

bluetooth pairing definition:

to connect a bluetooth device

what is included in a bluetooth pairing & how many times do you have to pair it to a device ?

a built in security & a pin, & one time

what’s the process of bluetooth pairing?

enable bluetooth on devices → set devices to discoverable mode → select discovered device→ enter/confirm pin → turn on & off the device to ensure it’s connected

what does GPS stand for?

global positioning system

how do GPS’s work?

if 4 satellites out of all of them can reach your phone then you’ll get the readings

how does a GPS determine location?

it uses timing differences from the signals of satellites to determine longitude, latitude, & altitude

what other ways can location be accessed other then gps?

wifi networks & cellular networks

what does MDM stand for?

mobile device management

what is the purpose of an MDM?

to manage company owned & user owned mobile devices

what does BYOD mean & what’s it for?

bring your own device & to work on your own device

what does a mdm allow?

set policies on apps, data, camera, manage access control, & more

what does COPE stand for?

corporate owned, personally enabled

what is the point of cope ?

the company buys the device that is for corporate & personal use

what’s the pro & con of cope?

it’s a free device for the employee but controlled by the company

what does mdm policy enforcement offer?

corporate email configuration, two factor authentication, corporate applications, mobile device synchronization

what’s the point of mobile synchronization?

configures certain settings, phone call, email, messages, & data

how else can synchronization be used? provide examples

you can determine what types of data to synchronize such as calendar & contacts, & place data caps & transfer costs

what other factors would be involved in business applications?

mail, cloud storage, & different services that require authentication. selecting items to synchronize or sync differently for other services

what does IP stand for?

internet protocol

what are networks designed for?

to move information from one device to another

examples of networks:

ethernet, DSL, cable system

what is stored in networks & then stored within those things?

TCP & UDP information & application information