Iyiphi iwaranti enayo i-Echo Dot?

El I-Echo Dot iyithuluzi elihlakaniphile elivela e-Amazon eselidume kakhulu phakathi kwabasebenzisi abafuna ukuthola abasizi bezwi ezindlini zabo. Le divayisi exhunywe ku-inthanethi ivumela abasebenzisi ukuthi benze imisebenzi ehlukahlukene ngemiyalo yezwi futhi isibe into emaphakathi ezindlini ezihlakaniphile. Nokho, kubalulekile ukuthi abasebenzisi bacabangele lo mbuzo: "Iziphi iziqinisekiso ezinikezwa yi-Echo ⁣Dot?" ⁢ngaphambi ⁢ngaphambi kokuyithenga. Kulesi sihloko sizohlola iziqinisekiso ezinikezwa yi-Amazon kule divayisi, sinikeze abasebenzisi ulwazi oludingekayo ukuze benze isinqumo esinolwazi ngaphambi kokuthenga i-Echo Dot. .

Amadivayisi ahlakaniphile afana ne-Echo Dot Zenzelwe ukwenza izimpilo zabasebenzisi zibe lula, kodwa zisengaletha izinkinga⁤ nokwehluleka.⁢ Ngalo mqondo, ukuba newaranti eqinile kubalulekile ukuvikela ukutshalwa kwezimali kwabasebenzisi kanye nokuqinisekisa ukuthi bangajabulela ⁢ ngokugcwele amakhono edivayisi. ⁤ I-Amazon inikeza iziqinisekiso ze-Echo Dot ezivumela abasebenzisi ukuxazulula izinkinga futhi zithole ukulungiswa uma kwenzeka kuba nokwehluleka noma ukonakala kokukhiqiza.Kubalulekile ukuqonda imigomo nemibandela yewaranti ukuze wazi ukuthi ayini amalungelo omsebenzisi nokuthi kwenzekani uma kuba nenkinga.

Iwaranti ejwayelekile ye-Amazon ye-Echo Dot inikeza ukufakwa kwesikhathi esicacisiwe, ngokuvamile⁢ unyaka owodwa kusukela⁤ ngedethi yokuthenga. Ngalesi sikhathi, uma idivayisi ihlangabezana nezinkinga zobuchwepheshe noma amaphutha okukhiqiza, abasebenzisi bangaxhumana nokwesekwa kwamakhasimende e-Amazon ukuze bathole usizo. Ezimweni eziningi, ukwesekwa kwamakhasimende kunganikeza izixazululo futhi kuqondise umsebenzisi ekuxazululeni izinkinga ezincane zobuchwepheshe. Nokho, uma inkinga ingenakuxazululeka, ‍ I-Amazon ingase inikeze ukulungiswa, ukushintshwa noma imbuyiselo, njengoba kunesidingo.

Kwezinye izimo, abasebenzisi⁤ bangakhetha ukuthenga a iwaranti enwetshiwe kwe-Echo⁤ Dot yakho. Lesi siqinisekiso sinikeza ukuvikeleka okwengeziwe ngemva kokuphelelwa yisikhathi kwewaranti evamile ye-Amazon. Inganikeza ukuthula kwengqondo okwengeziwe kubasebenzisi njengoba izofaka izinkinga zobuchwepheshe kanye nokukhubazeka kokukhiqiza isikhathi eside. Ngokukhetha iwaranti enwetshiwe, abasebenzisi bangaqinisekisa ukuthi utshalomali lwabo luvikelekile isikhathi eside futhi banokufinyelela ekusekelweni okuqhubekayo kwezobuchwepheshe.

Ekuphetheni, I-Echo Dot ineziqinisekiso ezinikezwe yi-Amazon evumela abasebenzisi⁣ ukuthi baxazulule izinkinga zobuchwepheshe,⁤ bathole ukulungiswa noma bathole ukumiselela noma imbuyiselo. Ukuba newaranti eyanele kubalulekile ukuze kuvikelwe ukutshalwa kwezimali kwabasebenzisi futhi ujabulele ngokugcwele ukusebenza kwedivayisi. Kubalulekile ukufunda imigomo nemibandela yewaranti ngokucophelela ukuze uqonde amalungelo nezinketho ezitholakalayo uma kwenzeka kuba nenkinga.

1. Iwaranti ye-Echo Dot: Ihlanganisani futhi isikhathi esingakanani?

Iwaranti ye-Echo⁢ Dot⁤ inikeza ukuvikeleka okuphelele kwale divayisi esungulayo. Siyaqinisekisa ukuthi i-Echo Dot yakho ngeke ingabi nasici ezintweni zokwakha nokusebenza kwayo unyaka owodwa kusukela ngedethi yokuthenga. Ngalesi sikhathi, uma kutholakala amaphutha okukhiqiza, sizolungisa noma sishintshe ⁢ Ichashazi lakho le-Echo ngaphandle kwenkokhiso eyengeziwe. Ngokungeziwe kulokhu kufakwa, sicela uqaphele ukuthi iwaranti ngeke idluliselwe uma i-Echo Dot ishintsha ubunikazi noma kuthengwa⁢ seyike yasetshenziswa.

Iwaranti ye-Echo Dot imboza ngokuqondile amaphutha ezingxenyeni zangaphakathi nezangaphandle, njengezinkinga zombhobho, isipikha, noma intambo yamandla. Uma kwenzeka umonakalo ngengozi, njengamaconsi noma ukuchitheka koketshezi, lesi siqiniseko asisebenzi. Kodwa-ke, uma uyilungu lohlelo lwethu lwewaranti enwetshiwe, ungase ufaneleke ukuthola usizo olwengeziwe oluhlanganisa ukulimala kwengozi. Qiniseka ukuthi ubuyekeza imigomo nemibandela enemininingwane ukuze uthole ulwazi olwengeziwe mayelana nale nketho.

Ukuqinisekisa iwaranti yakho ye-Echo Dot, kalula Xhumana nesevisi yethu yamakhasimende, ihlinzeka ngenombolo ye-oda lokuthenga kanye nencazelo ecacile yenkinga obhekene nayo. Ithimba lethu lezobuchwepheshe lizohlola isimo futhi izonquma⁢ isixazululo esingcono kakhulu⁢ sakho. Noma ngabe udinga ukulungiswa noma ukushintshwa, sizoqinisekisa ukuthi une-Echo Dot esebenzayo futhi esebenza ngokushesha okukhulu.

2. Izinqubo zokuphoqelela iwaranti ye-Echo Dot

Inqubo yesimangalo sewaranti: Uma nganoma yisiphi isizathu i-Echo Dot yakho iveza isici noma ukwehluleka okumbozwe iwaranti, ngezansi sichaza izinyathelo okufanele uzilandele ukuze ufune iwaranti. Okokuqala, kuyadingeka ukuthi xhumana nesevisi yamakhasimende kusuka e-Amazon. Ungakwenza ngewebhusayithi yabo noma ngocingo. Qiniseka ukuthi unenombolo ye-serial esandleni. yedivayisi yakho, njengoba uzocelwa ukuthi uqinisekise ukufaneleka kwesiqinisekiso.

Ukuhlolwa kwedivayisi: Uma usuxhumene nesevisi yamakhasimende, a Omele i-Amazon izokuqondisa ngenqubo yokuhlola ye-Echo Dot yakho. Le nqubo ⁤ ingase ⁢ifake ezinye izivivinyo noma imibuzo ukuze kutholwe isizathu sokwehluleka. Kwezinye izimo, ummeleli angase akucele ukuthi wenze izinyathelo ezithile zokuxazulula inkinga ukuze uzame ukuxazulula inkinga ngaphambi kokuhlola iwaranti.

Izinketho zokuxazulula: Uma idivayisi isihloliwe, omele i-Amazon uzokwazisa ngezinketho zokuxazulula ezitholakalayo. Lokhu kungafaka phakathi ukufaka esikhundleni se-Echo Dot entsha, ukulungisa idivayisi, noma ukubuyiselwa imali. Kubalulekile ukuqaphela ukuthi izinketho zokuxazulula zingahluka kuye ngeminyaka yedivayisi kanye nemvelo yesici.Yonke le mininingwane uzonikezwa omele i-Amazon ozokuqondisa esinyathelweni ngasinye senqubo yesicelo sewaranti. Unganqikazi ukwenza veza ukungabaza noma okukukhathazayo ⁤ ngesikhathi sokuxhumana nommeleli,⁤ njengoba beqeqeshelwe ukukunikeza⁤ isevisi yamakhasimende enhle kakhulu⁢.

3. ⁢Okungafakwanga Iwaranti Yechashazi le-Echo Nemikhawulo

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I-Amazon Echo Dot isekelwa iwaranti enomkhawulo ehlanganisa ukonakala kwezinto ezibonakalayo isikhathi esingu-1 kusukela ngosuku lokuthenga. Nokho, kubalulekile ukuqaphela ukuthi kukhona okungafakwanga kanye nemikhawulo ethile esebenza kulesi siqinisekiso.

Okokuqala, iwaranti ye-Echo Dot ayifaki umonakalo odalwe ukusetshenziswa kabi, izingozi, ukunganakwa, noma ukuguqulwa okungagunyaziwe. Lokhu kusho ukuthi uma idivayisi isetshenziswe ngokungalungile noma ingaphansi kwezimo ezeqa ⁢umthamo wayo, iwaranti ngeke isebenze. Ukwengeza, ⁢noma yimuphi umzamo wokuvula noma wokukhanda i-Echo Dot ngezindleko zakho uzophumela ekukhanselweni. yewaranti.

Okwesibili, noma imuphi umonakalo odalwe izehlakalo zangaphandle, njengezinhlekelele zemvelo, imililo, izikhukhula noma ukucisha kukagesi, awufakiwe kuwaranti. Lezi izinto ezingalindelekile futhi ezingaphezu kwamandla e-Amazon, ngakho-ke umthwalo wemfanelo usemahlombe omsebenzisi. Ngokunjalo, iwaranti ayibandakanyi ukuguga okuvamile kwedivayisi, okuhlanganisa imihuzuko, amamaki noma izinguquko zezimonyo ebusweni.

Kubalulekile ukukhumbula lokhu okushiyelwe kanye nemikhawulo ngaphambi kokuthenga i-Echo Dot futhi usebenzise idivayisi ngendlela efanele. Uma noma yimiphi imibuzo noma ukukhathazeka kuphakama mayelana newaranti, kuyancomeka ukuthi kubuyekezwe imigomo egcwele nemibandela ehlinzekwe yi-Amazon‍ ukuze uthole ukuqonda okunembile kokuthi yini ekhaviwe nokuthi yini engekho⁤.

4. Uyithola kanjani insiza yewaranti⁤ ye-⁢the Echo Dot

Isikhathi sewaranti kanye nekhava:

I-Echo Dot iza ne-a iwaranti enomkhawulo yonyaka owodwa ehlanganisa noma yiziphi izinkinga zokukhiqiza noma zokwenziwa. Ngalesi sikhathi, uma i-Echo Dot yakho inezinkinga, ungakwazi thola isevisi yewaranti yamahhala. ⁢Ukufakwa kwewaranti ⁤kuhlanganisa ukulungisa noma ukushintshwa mahhala ngomkhiqizi. Kubalulekile ukuqaphela ukuthi iwaranti ayifaki umonakalo odalwe ukusetshenziswa kabi noma izingozi.

Inqubo yokuthola isevisi yewaranti:

Uma ⁢Echo Dot yakho idinga ukulungiswa noma ukushintshwa ngaphansi kwesikhathi sewaranti, ungakwazi qala inqubo yesevisi yewaranti kalula. Okokuqala, kufanele xhumana nosekelo lobuchwepheshe kusuka e-Amazonukuze⁢ ukubahlinzeka ⁢imininingwane yenkinga obhekene nayo. Ithimba losekelo lizokuqondisa ohlelweni lokuxazulula, futhi uma kunesidingo, likusize hlela ukuthunyelwa kwedivayisi ukuze kulungiswe noma kushintshwe.

Khumbula ukwenza isipele:

Ngaphambi kokuthumela i-Echo Dot yakho yesevisi yewaranti, kubalulekile ukuthi wena ukwenza isipele yanoma iyiphi idatha noma izilungiselelo ofisa ukuzigcina. Ngesikhathi sokukhanda noma ukushintshwa, idatha egcinwe ocingweni ingase isulwe. Ukuze ugweme ukulahlekelwa⁤ ulwazi olubalulekile, ungakwenza isipele usebenzisa i isici sokusekelayo sisuka ku-Amazon noma ngokudlulisela idatha kwenye idivayisi ehambisanayo.

5. Izincomo zokuvikela iwaranti ye-Echo Dot

Iziqinisekiso ze-Echo Dot ziyahlukahluka kuye ngokuthi uthenga kuphi kanye nohlobo lwewaranti ekhethiwe. Ngokuvamile, i-Amazon inikeza iwaranti enomkhawulo yonyaka owodwa ku-Echo Dot. Lokhu kusho ukuthi uma idivayisi iveza iphutha lokukhiqiza phakathi nezinyanga eziyi-12 zokuqala, i-Amazon izoyilungisa noma ibuyisele esikhundleni ngaphandle kwezindleko ezengeziwe kukhasimende.

Ngoba vikela iwaranti ye-Echo Dot, kubalulekile ukucabangela ezinye izincomo. Okokuqala, kubalulekile gcina idivayisi⁢ endaweni⁤ efanelekile. Gwema ukuyibeka endaweni enomswakama, eshisayo, noma ebanda kakhulu, njengoba lokhu kungase kulimaze izingxenye zangaphakathi futhi kuqede iwaranti.

Esinye isincomo esibalulekile yilesi buyekeza njalo i-firmware ye-Echo Dot. Izibuyekezo ze-Firmware ngokuvamile zihlanganisa ukulungiswa kweziphazamisi nokuthuthukiswa ekusebenzeni kwedivayisi. Ukugcina inguqulo ye-firmware isesikhathini ngeke nje kukusize ujabulele izici zakamuva nemisebenzi, kodwa kuzosiza nokuvikela isiqinisekiso ⁢sedivayisi.

6. Isandiso sewaranti:⁢ Ingabe⁤ ikufanele i-Echo ⁢Dot?

Okunye ukungabaza okuvamile phakathi kwabasebenzisi abafisa ukuthenga a I-Echo Dot Iwuhlobo olunjani lwewaranti umkhiqizo olunikezayo. Izindaba ezinhle ukuthi konke I-Echo Dot ⁢ woza nawe Iwaranti enomkhawulo yonyaka ongu-1 okufakiwe, okusho ukuthi uma uhlangabezana nezinkinga ngocingo lwakho ngenxa yokukhubazeka kokukhiqiza noma ukwehluleka kwehadiwe, ungacela ukukhanda noma ukushintshwa ngaphandle kwenkokhiso.

Manje, uma ucabanga ukunweba iwaranti kwe I-Echo Dot, kubalulekile ukuhlola ukuthi kuyafaneleka ngempela yini noma cha.Ukuze wenze lokhu, kufanele ucabangele izindleko ezengeziwe ezihilelekile ekwandiseni iwaranti kanye nobude besikhathi okunikezwayo. Ezinye izinketho zesandiso zinganikeza kufika ku 2 iminyaka eyengeziwe ukumbozwa, okungaba yinzuzo uma uhlela ukusebenzisa idivayisi yakho isikhathi eside futhi ufuna ukuvikelwa kunoma yikuphi okwenzekayo.

Ngakolunye uhlangothi,⁤ uma ucabangela ukuthi⁢ I-Echo Dot Kuyidivayisi ye-Amazon eqashelwa ikhwalithi nokuqina kwayo, isandiso sewaranti singase singadingeki. Ezimweni eziningi, izinkinga ongase ube nazo ngedivayisi ngokuvamile zenzeka phakathi nonyaka wokuqala wokusetshenziswa. Nokho, uma ungumuntu oqaphile futhi ukhetha ukuba ⁢nokuthula kwengqondo kokuba newaranti enwetshiwe, khona-ke kungase kukufanelekele lokho. ⁢Khumbula ukubuyekeza izimo nemibandela yewaranti enwetshiwe ngaphambi kokwenza isinqumo sokugcina.

7. Iwaranti Yamazwe Ngamazwe Ye-Echo Dot: Amaphuzu Abalulekile Okufanele Acatshangelwe

I isiqinisekiso samazwe ngamazwe I-Echo Dot isici esibalulekile okufanele icatshangelwe lapho uthenga le divayisi ku-Amazon. Lesi sipika esihlakaniphile sisekelwa iwaranti eqinile enikeza amakhasimende ukuthula kwengqondo. Ngaphezu kwewaranti evamile, i-Echo⁣ Dot iphinde ibe ne-⁤ isivikelo esengeziwe okuyinto ⁤emboza izinhlobo ezihlukene ⁢zokulimala ⁢kwengozi phakathi nesikhathi sewaranti.

Iwaranti yamazwe ngamazwe ye-Echo⁢ Dot inikeza ‍ ukumbozwa okugcwele ngokumelene nokukhiqiza nokusebenza okungalungile isikhathi esithile. Uma isipikha sihluleka phakathi nalesi sikhathi, i-Amazon ivuma ukusilungisa noma ukusishintsha ngaphandle kwezindleko ezengeziwe kukhasimende. Kubalulekile ukuqaphela⁢ ukuthi iwaranti isebenza kokubili kudivayisi ethengwe esitolo se-inthanethi sase-Amazon nakulezo ezithengwe ezitolo ezigunyaziwe.

Ukwengeza, i-Echo Dot ine-a isivikelo esengeziwe okuhlanganisa umonakalo wephutha njengoketshezi oluchithekile, ukuwa, ukushaywa nezinye izigameko ezingalindelekile. Lesi sivikelo singathengwa ngokuhlukene futhi sinikeza ukuthula kwengqondo okukhulu kumsebenzisi, njengoba simboza umonakalo ongenzeka phakathi nokusetshenziswa kwansuku zonke kwedivayisi. Ukugcina le nketho engqondweni kungaba wusizo ikakhulukazi uma uhlela ukusebenzisa i-Echo Dot ezindaweni lapho ingase ibe sobala kakhulu ezingozini.

8. Izixazululo ezijwayelekile⁢ zezinkinga ⁤zimbozwe iwaranti ye-Echo Dot

I-Echo Dot iyithuluzi le-Amazon elinikeza iwaranti ephelele ukunikeza ukuthula kwengqondo kubasebenzisi. Uma uhlangabezana nezinkinga nge-Echo Dot yakho, ungakhathazeki, lapha sinezixazululo ezivamile zezinkinga ezimbozwe iwaranti. Khumbula lokho lawa macebiso Lezi ngezezindaba ezimbozwe ngaphansi⁢ kwewaranti ye-Echo Dot⁤.

Inkinga 1: Ichashazi le-Echo ngeke livule.
Isixazululo: Hlola ukuthi ikhebula lamandla lixhumeke ngendlela efanele yini. Qiniseka ukuthi ipulaki ifakwe kahle ku-Echo Dot nasendaweni yokuphuma. Ungazama futhi ukushintshela kwenye ikhebuli yamandla ukuze ukhiphe noma yiziphi izinkinga zekhebula ezinephutha. Uma inkinga iqhubeka, sicela uxhumane nesevisi yamakhasimende e-Amazon ukuze uthole usizo olwengeziwe.

Inkinga 2: Angikwazi ukulalela umculo nge-Echo Dot.
Isixazululo: Qiniseka ukuthi i-Echo Dot ixhunywe ku-inthanethi nokuthi izilungiselelo zedivayisi zilungile. Hlola ukuxhumeka kwakho kwe-Wi-Fi futhi uqiniseke ukuthi uxhumeke kunethiwekhi ezinzile. Uma inkinga iqhubeka, zama ukuqala kabusha i-Echo Dot futhi uqiniseke ukuthi zonke izilungiselelo zomsindo zisethwe ngendlela efanele. Ungaphinda uhlole ukuthi i-akhawunti ye-⁤Amazon oyisebenzisayo ixhunywe kunoma iyiphi isevisi yomculo, njenge-Amazon ⁣Music. Uma udinga olunye usizo, sicela ungangabazi ukuxhumana nesevisi yamakhasimende.

9. Usenza kanjani isicelo sewaranti ye-Echo Dot yakho

Ukuze wenze isimangalo sewaranti ye-Echo Dot yakho, kubalulekile ukwazi ukuthi le divayisi inasiphi isiqinisekiso.Ichashazi le-Echo liza newaranti ekhawulelwe yonyaka ongu-1 ehlanganisa izici zokukhiqiza nokusebenza. Lesi siqinisekiso sisebenza kusukela ngedethi yokuthenga okokuqala futhi sisebenza kumthengi wokuqala kuphela. Kubalulekile ukugcina ubufakazi bokuthenga, njengoba kuyodingeka wenze noma yisiphi isimangalo sewaranti.

Uma uthola noma yimaphi amaphutha ku-Echo Dot yakho ngesikhathi sewaranti, unenketho yokuxhumana nethimba labasekeli be-Amazon. Ungakwenza ngokusebenzisa iwebhusayithi noma ngohlelo lokusebenza lweselula lwe-Amazon⁢.⁤ Khumbula ukunikeza ⁢imininingwane enemininingwane ⁤inkinga obhekene nayo futhi unamathisele izithombe noma amavidiyo uma kungenzeka. Ithimba labasekeli lizohlola isimangalo sakho futhi likunikeze izinketho ezitholakalayo zokuxazulula inkinga.

Ngokuya ngohlobo lwenkinga obhekene nayo, unganikezwa ukukhanda, ukushintshwa, noma imbuyiselo. Kwezinye izimo, kungase kudingeke ukuthi uthumele idivayisi enesici e-Amazon ukuze ihlolwe. Kubalulekile ukulandela imiyalelo enikezwe ithimba elisekelayo futhi uqiniseke ukuthi upakisha kahle i-Echo Dot yakho ukuze ugweme ukulimala ngesikhathi sokuthunyelwa. Uma isimangalo sakho sesamukelwe, i-Amazon izothatha izinyathelo ezidingekayo ukuze ixazulule inkinga futhi ikuthumelele idivayisi yakho elungisiwe, eshintshiwe noma imbuyiselo ehambisanayo.

10. Iwaranti ye-Echo Dot ngokumelene nemikhiqizo efanayo: Ukuqhathanisa nokucatshangelwa

Kunamathuluzi amaningi afana ne-Echo Dot emakethe, kodwa yisiphi iwaranti enikezwa yilo mkhiqizo uma kuqhathaniswa neminye?Kubalulekile ukukhumbula ukuthi i-Echo Dot inewaranti elinganiselwe. 1 unyaka. Phakathi nalesi sikhathi, i-Amazon iyavuma ukulungisa noma ukushintsha idivayisi ngaphandle kwezindleko ezengeziwe uma kwenzeka ikhiqiza noma inephutha lezinto ezibonakalayo. Lesi siqinisekiso sengeza inani elingeziwe nokuthula kwengqondo kubasebenzisi, njengoba bengathembela kukhwalithi nokuqina kwe-Echo Dot. .

Uma uqhathanisa i-Echo Dot neminye ⁢imikhiqizo ⁢efanayo emakethe⁤, kubalulekile ukucabangela izici ezimbalwa ezibalulekile. Esinye sazo isiqinisekiso esinikezwa amanye amabhrendi, okuvamise ukuba ngaphansi ngesikhathi nokufakwa. Yize ezinye izinhlobo zinganikeza iwaranti yezinyanga eziyisi-6 noma ngaphansi, iwaranti yonyaka ongu-1 ye-Echo ⁤Dot igqama njengenketho ⁤ethembekile esekelwa i-Amazon. Ngaphezu kwalokho, kubalulekile ukukhumbula ukuthi iwaranti ye-Echo Dot ihlanganisa kokubili ukukhubazeka kokukhiqiza noma okokusebenza, kanye namaphutha okusebenza. Lokhu kubalulekile ukuze kuqinisekiswe umuzwa ⁤owanelisayo wesikhathi eside.

Kuyafaneleka ukubalula okunye ukucatshangelwa okwengeziwe lapho uhlola iwaranti ye-Echo Dot. Lapho uthenga le divayisi, kubalulekile ukugcina i-invoyisi noma ubufakazi bokuthenga, njengoba le dokhumenti izodingeka uma usebenzisa iwaranti. Ngaphezu kwalokho, nakuba iwaranti ivala amaphutha⁢ ekwenziweni noma ⁢kokubalulekile, ayifaki umonakalo odalwe ukusetshenziswa kabi noma⁢ izingozi. Ngakho-ke, kubalulekile ukulandela imiyalelo yokusetshenziswa ehlinzekwe yi-Amazon ukuqinisekisa ukusebenza okulungile nokugwema izinkinga. Uma kwenzeka udinga usizo noma usebenzisa isiqinisekiso, i-Amazon inomsebenzi omuhle kakhulu insizakalo yekhasimende lokho kuzonikeza izixazululo ezisheshayo nezisebenzayo.