Knowledge Flashcards

1
Q

Inverter

A

DC to AC

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2
Q

LCD

A

Liquid Crystal Display
- lightweight
- low power and inexpensive

  • requires backlight
    -black level is a challenge
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3
Q

TN

A

Twisted Nematic

  • fast response = Gaming
  • poor viewing angles
  • low color quality
  • OG tech
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4
Q

SO-DIMM

A

Small outline dual in line memory module

  • memory used for laptops
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5
Q

HDD

A

-Traditional spinning drive platter
- 2.5 in for laptop
- 3.5 for desktop

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6
Q

SDD

A
  • All memory, no moving parts
  • silent, fast access time, less latency
  • 2.5 in
  • 1.8 in
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7
Q

M.2

A
  • Small form factor
  • No SATA data or power cable
  • Easy to install and replace
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8
Q

Migration from HDD to SDD

A

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

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9
Q

PAN

A

personal area network

-Bluetooth

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10
Q

NFC

A

Near field Communication

  • 4cm or less
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11
Q

IPS

A

In Plane Switching
- excellent color rep
- wide viewing angle

  • more expensive than TN
  • slow response time
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12
Q

VA

A

Vertical Alignment
- bwt TN and IPS
- Good color rep
- High Contrast Ratio
- Good viewing angle

  • Slower response time than TN
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13
Q

OLED

A

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
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14
Q

Hub

A

multi port repeater

half duplex

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15
Q

Cable Modem

A

-Data on “cable” network
- Coaxial Cable
- Shared bandwidth
-Broadband
- Highspeed networking

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16
Q

DSL Modem

A

ADSL
- use telephone line
- dedicated bandwidth
- Twisted pair copper cabling

17
Q

ONT

A

Optical Network Terminal
- AKA FIBER
- connect ISP fiber network to copper network

18
Q

Port Replicator

A
  • Similar to docking station
  • Does not commonly have an expansion slot
19
Q

GSM

Global System for Mobile Communication

A
  • 90% of market
  • Move your SIM card from phone to phone
  • Multiplexing (everyone gets a little slice of time)
20
Q

CDMA

Code Division Multiple Access

A
  • Everyone communicate at the same time
  • Each call use a different code
21
Q

2G

A
  • Poor data support
  • orginally used circuit-switching
  • minor upgrade for some packet-switching
22
Q

3G

A
  • upgrade data connectiviety over 2G
  • improved speeds = several Mbit/s
  • Bandwidth improved allowed new functionality (GPS, Mobile TV, Video on Demand, Video conferencing)
23
Q

4G and LTE

A

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

24
Q

5G

A
  • significant performance improvement
  • high freq, 10 Gbit/s
  • IoT impact, faster monitoring and notification, large data transfer, additional cloud processing
25
Q

GPS

A
  • Needs at least 4 satellites for precise navigation
  • location based on timing difference (longitiude, latitude, alititude)
26
Q

DPL

Data Loss Prevention

A
  • prevent someone from sending and email containing PII and senstive info
  • blocks data if it finds a pattern match
27
Q

Legal Hold

A
  • Mailbox has no mailbox limit
  • Any deleted emails are retained in purges folder
  • prevent user under investigation from deleting emails
28
Q

Conservation Mode

A
  • battery only charges to 50-60%
  • Smartphone goes into low power mode
  • GPS does not work
29
Q

Digitizer

A

Device that recieves, processes and record digitally any analog info

30
Q

SDN

Software Defined Networking

A
  • 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)

31
Q
A