Comptia A+ Flashcards
What is the memory, and the form factor of that memory used in laptop devices?
SSD- Solid state drive- No moving parts, Silent, fast access time, less latency, 2.5 inch and 1.8 on older hard drives.
What is an SSHD?
Solid state hybrid drive- Flash memory and hard drive storage, SSD caches the hard drive data. Has moving parts as well as non-moving.
What is a Hard drive?
Moving parts, magnetic disk, found in older laptops and desktops.
How do you replace the components inside of a laptop?
Open a cover on the back, or open the entire laptop, usually involves removing screws.
What are the memory modules and the names of those memory modules used inside of a laptops and mobile devices?
SO-DIMM, small outline dual in-line memory module
Micro-DIMM, Micro-dual in-line memory module.
What is a smart card reader and the different kinds of smart card readers?
A smart card reader is a device that can read a card with some sort of bar coding or magnetic strip in it. This can range from credit and debits cards to rewards cards and even a satellite receiver smart card.
There is an integrated card reader built into the laptop, and an external reader that is USB connected.
What is an optical drive?
Used for reading and maybe writing to compact disks, too large for todays portable devices, becoming difficult to find, often removable, replace with other media.
What are the wireless ways a laptop connects to a network?
802.11 wireless connection
W-wan, Wireless wide area network and is a cellular based connection
W-pan, Wireless personal area network which is the blue tooth wireless network
What are the two different kinds of wireless network modules found inside of laptop devices?
Mini PCI and Mini PCI Express.
Laptop video cards?
Often built into the processor, not upgradable
Sometimes part of the system board, again not upgradable
Some laptops have upgradable laptop cards, not the slim line modules
What is the screen type that is most commonly used?
LCD, Liquid Crystal Display, Light and high-resolution
Very fragile, Needs a good case
What kind of power source is used for laptops?
Auto Switching or fixed input Converts AC to DC Input voltage would be 110 to 220volts DC jack on the laptop, Specific to the power supply type, Information can be found on the back.
What is the most common type of battery used in laptops?
Lithium ion (Li-ion)
Common in consumer electronics
No “memory effect”
Charging the battery diminishes capacity.
What kind of mouse does a laptop use?
Integrated mouse and a pointing stick
What consists of a laptop frame?
Plastic or Aluminum metal
Mother board?
Proprietary, Built to fit
Replacement isn’t easy because most of the components are built onto the mother board.
Laptop CPU?
Central processing unit- Has integrated components has a video and memory controller built in. Often slower than desktops.
LCD?
Liquid crystal display, light shines through crystals
Advantages, Lightweight, low power and inexpensive
Disadvantages, Black levels are a challenge, requires a separate backlight and are difficult to replace.
OLED?
Organic Light Emitting Diode-
Organic compound emits light when receiving an electric current.
Thinner and lighter
No backlight needed
Not quite ready for laptops, decay ratio too high, costs more
Types of lap top Wi-Fi antennas?
Wi-Fi main, aux and Bluetooth. Antenna wires wrap around the laptop screen, ITS UP HIGH! Lol
LED-LCD Display?
Backlight is LEDs instead of florescent
CCFL?
Cold Cathode Florescent Lamp used for lighting electrical devices on older models. Remember backlit bulbs.
Inverter for light display?
Converts DC into AC.
What is a digitizer?
Uses a pen like device as input.
Stylus input, Useful for graphical input.
Becoming more common on laptops/tablets, or on hybrid devices.
Laptop function keys
Press FN to use the function keys.
Dual displays
Toggle FN keys for secondary functions and to toggle between LCD/external moniter/both, you can go from computer only, duplicate, extend, and projector only.
LCD switch
The refrigerator door effect, allows you to close your laptop while broadcasting to another external monitor. Physical switch on older systems, Internal magnetic switch on newer portable systems, Set functionality in the BIOS or utility.
Wireless control
Airplane mode, secure areas, look for status light. Physical switch, FN key.
It may include an 802.11, Bluetooth and cellular.
Screen orientation
Rotate the screen, Useful on rotating tablet/laptops
Landscape portrait
FN key or hotkey
Different across manufacturers
GPS
Uses antennas, disable airplane mode to to turn off or on.
Docking station
Is used for additional peripherals as well as direct contact with the device.
Also can be known as port replicators.
Laptop locks
Makes it so the device cannot be stolen.
Rotating/Removable screens
Can disconnect or rotate or both.
What is 802.11 and what is it used for used for?
W-LAN-Wireless local area network, allows devices to communicate with each other and access the internet without connecting wires.
Tablets?
Single screen touch computers. Designed for touch input. Lots of application support and media.
Smart phone?
Mobile communication, Media viewer, mobile applications and other apps.
Wearable technology?
Smart watches, fitness monitors.
Virtual reality?
Replace reality with a computer generated version. Play games and other types of media.
Augmented reality?
Overlay with a virtual augmentation with the physical world.
E-reader?
Specifically used to read books. Uses electronic paper. Has WIFI.
Gps?
In car navigation and non car, requires a view of the sky, needs to receive a signal. Periodic updates required, over the air memory card.
Micro USB and Mini USB plug?
EU standardized on micro USB, common worldwide.
USB-C
24-pin double-sided USB connector, used for both hosts and devices. Can plug it in on either side. Can be used as an audio 3.5mm jack. Acts as a USB 3.1/USB 2.0 connection.
Lightning Connector?
Used to charge apple devices. 8 pin, higher output, can be inserted either way.
What is tethering?
Physically connect a device to your mobile phone. Or use the internet/data connection.
Uses USB to connect.
Hotspot?
Able to connect many different devices to the internet from your phone.
Proprietary mobile interfaces?
Early mobile technology, different cables to handle different functions, EU stepped in to make a common power supply for mobile devices used today.
NFC
Near field communication-Sends small amounts of data wirelessly over a limited area. Make payments, identification, etc…
Bluetooth?
PAN(Personal area network) Connects our mobile devices.
IR?
Infrared-Largely replaced by Bluetooth. Can control your entertainment center, almost exclusively for infrared.
Headsets?
Put into ears, and has a speaker. Some have a lightning connector or Bluetooth connector.
TRRS?
Tip ring ring sleeve.
Non Integrated-Speakers?
Can connect via Bluetooth or tethering. Mobile audio.
Gamepad?
Used to play games. Can be connected VIA Bluetooth, docking station, or tethered.
Protective covers
Screen protector, device protector.
Credit card readers
Phone or tablet becomes a point of sale terminal. Connects via bluetooth or trrs jack.
SD, Micro SD.
SD cards are mostly too big now. Micro SD cards are the standard now.
Part 2———————————————————————— What does it mean that your phone is a radio?
Baseband radio processor. A network interface for your radio. Has its own firmware and memory. Realtime operating system, The firmware can be updated, OTA-Over the air.
PRL?
PRL-preferred roaming list, allows your phone to connect to the right tower.
CDMA networks are Verizon and Sprint.
PRi?
(Product release instructions). Radio settings, ID numbers, network codes, country codes, etc. Updates.
IMEI?
International Mobile Station Equipment Identity-Identifies a physical mobile device, every phone has a different IMEI, Can be used to allow or disallow access.
IMSI?
International Mobile Subscriber Identity- Identifies the user of a mobile network, can be provisioned in the sim card. Tailored for the user.
VPN?
Virtual Private Network-Important for secure communication, Integrated into the phone OS. May require some additional setup.