Knowledge Flashcards
Inverter
DC to AC
LCD
Liquid Crystal Display
- lightweight
- low power and inexpensive
- requires backlight
-black level is a challenge
TN
Twisted Nematic
- fast response = Gaming
- poor viewing angles
- low color quality
- OG tech
SO-DIMM
Small outline dual in line memory module
- memory used for laptops
HDD
-Traditional spinning drive platter
- 2.5 in for laptop
- 3.5 for desktop
SDD
- All memory, no moving parts
- silent, fast access time, less latency
- 2.5 in
- 1.8 in
M.2
- Small form factor
- No SATA data or power cable
- Easy to install and replace
Migration from HDD to SDD
Method 1
- Install an OS on SDD
- Manually move user document over to new drive
Method 2
- Image/Clone the HDD
Method 2.1
- Create image file
- 1 drive at a time
-Create multiple copies across multiple system
Method 2.2
- Drive to drive image
- Image directly from 1 drive to the other
- Taking everything from 1 sys and copying sector by sector to another drive
- requires 2 system running simultaneously or system supports multiple drive running simultaneously
PAN
personal area network
-Bluetooth
NFC
Near field Communication
- 4cm or less
IPS
In Plane Switching
- excellent color rep
- wide viewing angle
- more expensive than TN
- slow response time
VA
Vertical Alignment
- bwt TN and IPS
- Good color rep
- High Contrast Ratio
- Good viewing angle
- Slower response time than TN
OLED
Organic Light emitting diode
- no backlight
- thinner and lighter, flexible
- very accurate color rep
- better contrast ratio and color rep than LCD
- higher cost and lower brightness than LCD
Hub
multi port repeater
half duplex
Cable Modem
-Data on “cable” network
- Coaxial Cable
- Shared bandwidth
-Broadband
- Highspeed networking
DSL Modem
ADSL
- use telephone line
- dedicated bandwidth
- Twisted pair copper cabling
ONT
Optical Network Terminal
- AKA FIBER
- connect ISP fiber network to copper network
Port Replicator
- Similar to docking station
- Does not commonly have an expansion slot
GSM
Global System for Mobile Communication
- 90% of market
- Move your SIM card from phone to phone
- Multiplexing (everyone gets a little slice of time)
CDMA
Code Division Multiple Access
- Everyone communicate at the same time
- Each call use a different code
2G
- Poor data support
- orginally used circuit-switching
- minor upgrade for some packet-switching
3G
- upgrade data connectiviety over 2G
- improved speeds = several Mbit/s
- Bandwidth improved allowed new functionality (GPS, Mobile TV, Video on Demand, Video conferencing)
4G and LTE
LTE - converged standard of GSM and CDMA providers
- Based on GSM and EDGE
- support download rate of 150 Mbit/s
LTE-A
- support rate of 300 Mbit/s
5G
- significant performance improvement
- high freq, 10 Gbit/s
- IoT impact, faster monitoring and notification, large data transfer, additional cloud processing
GPS
- Needs at least 4 satellites for precise navigation
- location based on timing difference (longitiude, latitude, alititude)
DPL
Data Loss Prevention
- prevent someone from sending and email containing PII and senstive info
- blocks data if it finds a pattern match
Legal Hold
- Mailbox has no mailbox limit
- Any deleted emails are retained in purges folder
- prevent user under investigation from deleting emails
Conservation Mode
- battery only charges to 50-60%
- Smartphone goes into low power mode
- GPS does not work
Digitizer
Device that recieves, processes and record digitally any analog info
SDN
Software Defined Networking
- Allows rapid provisioning and deprovisioning networks in a virtual environment
- allows script
- Simplify netwokr infrastructure management
Infrastructure layer - Process network frames and packets (forwarding, trunking, encrypting, NAT)
Control layer - Manages action of data plane (Routing table, session table, NAT table, dynamic routing protocol updates)
Application layer - Configure & manage device (SSH, Browser, API)
