hardware/printers/cloud Flashcards by elijah hamrick

redundant array of independent disk, it is not specific to a type of drive, combines drives so the pc sees it as one

raid

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built in to the system, PCI/PCIe controller, uses usb or thunderbolt external raid enclosure

hardware raid

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windows- dynamic disk/ stroage space
MacOS- disk utility can create a raid
Linux- built into the Linux internal slandered

software raid

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JUST A BUNCH OF DISKS

JBOD

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disk stripping to combine drives into one, only needs 2 hdd/ssd, if one drive fails you lose all data

raid 0

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storage that spreads data bits across all disks in the array and increases performance, fastyer read and write speeds, larger storage space

disk stripping

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provides data protection by mirroring data across 2 disks, only needs 2 disks to work but more can be added, if one fails you still have data, no performance loss if one disk fails, its maximum storage capacity is limited to the size of one disk, 1 disk for storage 1 disk for protection

raid 1

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used to strip data across multiple drives into one larger/faster logical drive and distribute paritry across all disks, if 1 disk fails parity will repair it, requires 3 disks, parity is slow, mkaes the raid slow when 1 disk fails, slow rebuilt data times when replacing 1 hdd/ssd

raid 5

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smaller representation value that can be used to recreate data when lost

parity bit

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combines disk into a raid 1 array and then combines those into a raid 0 array
fast read/write speed because of stripping, large storage space, more disks increases capacity, no performance lost if disk fails, fast recovery.
four disk minimum, if raid 1 arry fails all data lost(that is 2 disk failing in a single raid 1 array)

raid 10

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sandbox, test development, app virtualization, legacy software/os, cross platform virtualization

client side virtualization

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outdated computing software and/or hardware that is still in use. The system still meets the needs it was originally designed for, but doesn’t allow for growth

legacy software/os

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uses hypervisor to allow multiple os to work on the same computer at the same time, it save power, hardware consolidation and system management and security

virtualization

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restart printer spooler, restart printer or pc

multiple printer pending in a queue

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search>services>printer spooler>right click>restart

how to reset printer spooler

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id the issue, gather information/ id user changes/ if possible make back ups

trouble shooting steps 1

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establish a theory of probable cause, conduct external/internal research based on symptoms

trouble shooting steps 2

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test to make sure your theory is correct, if it isnt establish a new theory and escalate

trouble shooting steps 3

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establish a plan of attack/ implement a solution, reference vendors instructions if needed

trouble shooting steps 4

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verify functions work and implement preventable measures

trouble shooting steps 5

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document findings/ outcomes/ and actions

trouble shooting steps 6

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uses ink ribbons, can print on carbon black paper, slow/loud,
parts- print head, ribbon, tractor feed, impact paper
repair- replace printer head/ribbon/paper

impact printers

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infrastructure as a service- used by company’s that dont want to maintain their own on-premise data center

iaas

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platform as a service, offers developers a platform for software development and deployment over the internet

paas

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soft ware as a service, service vendors host applications, making them viable to users via the internet(pay as you go service)

saas

cloud deployment models/ service models

cdm/sm

3rd party host equipment over the internet for everyone

public cloud

3rd party host for a single client, these are driven by concerns around security and compliance and to keep assets behind a firewall

private cloud

hardware failure should have no effect on cloud service

high availability

makes files available from anywhere you can access the cloud

file synchronization

multi-tenet platform that allows multiple tenets to work on the same platform

community cloud

saas paas iaas c-customer p-provider user c c c application p c c os p c c hardware p p p network p p p facility p p p regulatory comp c c c

ccsm chat 1

sets who can and cant use a printer

printer security user authentication

need top use a badge to access the printer

printer security badging

show who used the printer and it shows errors

printer security audit log

allows you to scan multiple pages at the same time

automatic document feeder(adf)/flatbed scanner

rubber scrapper cleans the photosensitive drum

laser printer cleaning

places a -600vdc charge on the photosensitive drum using a charge corona

laser printer charge

uses ink cartridges, most affordable, ink is pricey, must recalibrate after new ink installation, parts- ink, print head, roller, feeder, duplex assembly, cartridge belt clean- clean heads, replace cart, calibrate

inkjet printer

filament printer, uses .1mm-.3mm extruder to make prints

3d printer FDM(fused deposition modeling)

uses resin to print, uses .1mm-.3mm thick resin layer, cures with a light(led/laser)

3d printer SLA(stereolithography)

doest not use ink, heat sensitive paper, not long lasting, parts- feed assembly, heating element cleaning- clean element, remove debris

thermal printer

It is a cross-platform screen sharing system that was created to remotely control another computer.

vnc(virtual network components)

runs within the os, shares recourses between host and vm

hypervisor 2

powdered ink

toner

photosensitive drum that uses a laser/led to write to

imaging drum

keep everything aligned during printing and transfers ink to paper

transfer belt and rollers

clears the imagining drum

eraser lamp

fused ink to paper, its the fastest and cheapest printer for black and white per page, more cost for colored ink maintain- replace toner, apply maintenance kit, calibrate, clean

laser printer

uses hypervisor hardware

vnc type 1

uses hypervisor OS hardware

vnc type 2

advanced version of synchrous ddr is faster than sdram multiple variants(ddr, ddr2, ddr3, ddr4, ddr5) variants are not compatible with each other motherboard only supports 1 type of ram

ddr(double data rate)

min max ddr3-800/pc3 1600 ddr3-2132/pc3 17000 ddr4-1600/pc4 12800 ddr4-3200/pc4 25600 ddr5-4800/pc5 38000 ddr5-6600/pc5 52800

ddr speeds min/max

DDR1: 184-pin/ SODIMM- 200-pin DDR2: 240-pin/ SODIMM- 200-pin DDR3: 240-pin/ SODIMM- 204-pin DDR4: 288-pin/ SODIMM- 260-pin DDR5: 288-pin/ SODIMM- 262-pin

DDR/SODIMM pin count

ddr-266=pc 2100 266x8=2128 transfer-266 x bits-8 = mbps-2128

DDR performance

stores config changes done in bios/uefi rtc(real time clock) tells the system the time cmos is lactated on volatile memory volatile memory needs power to store data if it dies/removed it resets bio/uefi to default

CMOS(complementary metal oxide semiconductor) battery

used to initiate the boot process rom(read only memory) is used to store the it uefi features(only) secure boot, blocks untrusted code, fast start up, loads faster than bios, m/k interaction(bios only supports keyboard interaction)

BIOS(basic input output system)/UEFI(Unified Extensible Firmware Interface)

provides services beyond physical boundaries/flexibility

shared source cloud characteristics

pay as you go/what you use, helps optimize resources use/cost

meter utilization cloud characteristics

resources can be allocated as required to optimize cost/usage

rapid elasticity cloud characteristics

laser writes image on drum by lowering the voltage to -100vdc

laser printer exposing

rollers have a negative charge and toner sticks to it

laser printer developing

fuses image with fuser roller/pressure roller and makes it stick to the paper

laser printer fusing

exists as a simple file on a physical hdd

virtual machine storage types virtual hard drives

can be attached exclusively to a vm, so it is usable by another vm/ host in the os

virtual machine storage types physical hdd

replace drum laser/drum inspect printer head

printer issues lines on paper

monitor systems included in ssd/hdd used to detect/report various indicators(reliability, imminent failure)

S.M.A.R.T(self monitoring, analysis, reporting, tech)

app/printer set to incorrect orientation

printer issues page orientation

use correct ink put colors in correct slots check app calibrate printer

printer issues incorrect color settings

drums dirty/not cleaned replace toner cartridges

printer issues double image/echo images

bad pick up rollers check paper weight

printer issues miss feeding/not feeding

check/replace worn rollers use maintenance kit use correct paper for the printer

printer issues paper jams

issues with fusing assembly/ roller replace fusing assembly/ roller

printer issues toner not fusing

wrong language inspect drivers

printer issues garbled print

used to replace worn parts parts it replaces- fuser unit, transfer roller, paper feed roller/ separation roller, pickup roller must be cleaned and calibrated once maintenance is done

laser maintenance kit

allows machines to be used as a virtual desktop by remote users provides simple centrally managed user systems can be done on premise or cloud

vdi(virtual desktop infrastructure)

used to create, run, manage them vm's(virtual machines) can run directly on hardware without os provides resources to vm know as bare metal virtualization

hypervisor type 1

charges image drum

primary corona

wire/roller puts the toner on paper

transfer corona

writes image in drum

laser

melts toner to paper

fuser

picks up paper can be cleaned/replaced

pickup rollers

separated paper

separation pad

used to print on both sides of the paper

duplexing assembly

measures how fast the device is traveling

accelerator

Power good, CPU, POST, boot loader, operating system

boot sequence

hardware/printers/cloud Flashcards

(87 cards)