Best Alibaba ACA-Developer Exam Questions [2022] Helping In Passing Real Exam

1. A LI BA BA DEVELOPER Exam A CA - D e ve l op e r Q u e st ions V9. 0 2 A l ibaba De v e l op e r Top ics - A CA De v e l op e r Ce rt if icat ion 1 / 11

2. 1. I n orde r t o have you r ap p l icat ions int e ract w it h A l ibaba Cl ou d Rabbit M Q , you ne e d t o cre at e re l at e d M Q re sou rce s f irst . W hich of t he f ol l ow ing re sou rce s m u st be cre at e d? ( Nu m be r of corre ct answ e rs: 3) A . Vhost B. Exchang e C. Q u e u e D . Broke r E. Top ic A nsw e r: B, C, E 2 . D u ring t he p roce ss of backing u p an RD S dat abase , a de ve l op e r f ou nd t hat t he backu p f ail e d. W hat m ig ht cau se t his t o hap p e n? A . The dat abase inst ance is not st op p e d B. D D L op e rat ions w e re p e rf orm e d du ring t he backu p C. D M L op e rat ions w e re p e rf orm e d du ring t he backu p D . D CL op e rat ions w e re p e rf orm e d du ring t he backu p A nsw e r: C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 3. W hich of t he f ol l ow ing de scrip t ions de scribe s t he ( S e cu rit y Toke n S e rvice ) S TS se rvice corre ct l y? ( Nu m be r of corre ct answ e rs: 3) A . Throu g h t he S TS se rvice , RA M u se rs or RA M rol e s can obt ain a t e m p orary t oke n t hat al l ow s t he m t o cal l t he A l ibaba Cl ou d A PI or u se t he w e b consol e B. A S TS re q u e st consist s of an acce ss addre ss, com m u nicat ion p rot ocol , re q u e st m e t hod, re q u e st p aram e t e rs and charact e r e ncoding C. W he n cal l ing t he S TS A PI , in orde r t o e nsu re t he saf e cal l ing of t he A PI , A l ibaba Cl ou d w il l au t he nt icat e e ach A PI re q u e st t hrou g h a sig nat u re w he n e ach A PI cal l is m ade D . The S TS se rvice su p p ort s t he u se of bot h HTTP and HTTPS p rot ocol s A nsw e r: A , B, C 4. W he n a de ve l op e r cal l s t he A l ibaba Cl ou d S D K t o acce ss El ast ic Com p u t e S e rvice ( ECS ) , t he f ol l ow ing e rror is re t u rne d; Re al Nam e A u t he nt icat ionError W hat is t he p ossibl e cau se ? A . The ECS inst ance nam e viol at e s t he ECS se rvice ' s nam ing conve nt ions. B. The ECS inst ance nam e conf l ict s w it h ot he r inst ance nam e s. C. The u se r' s A l ibaba Cl ou d accou nt has not p asse d re al nam e au t he nt icat ion D . The A PI cal l e rs accou nt and p assw ord are not au t horiz e d f or ECS acce ss. A nsw e r: D 2 / 11

3. 5. S e rve rl e ss W orkf l ow al l ow s you t o orche st rat e dist ribu t e d t asks in se q u e nce , branch, and p aral l e l m ode s, and e nsu re t hat t asks are re l iabl y coordinat e d according t o you r w orkf l ow l og ic. W hich of t he f ol l ow ing se rvice int e g rat ion m ode s is not su p p ort e d by S e rve rl e ss W orkf l ow ? A . Re q u e st re sp onse m ode B. S ynchroniz at ion m ode C. A synchronou s m ode D . W ait ing f or cal l back m ode A nsw e r: C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 6. You have an ap p l icat ion w it h t he f ol l ow ing re q u ire m e nt s: 7. The re w il l be a l ot of vide o cont e nt t hat ne e d t o be u p l oade d. 8 . Each u p l oade d vide o ne e ds t o be p re p roce sse d t o p rovide dif f e re nt vide o re sol u t ions and q u al it y l e ve l s t o accom m odat e dif f e re nt de vice s and ne t w ork condit ions. 9. I t shou l d be p ossibl e t o p roce ss vide o in p aral l e l at scal e , t o e nsu re t hat vide os are p re p roce sse d in a re asonabl e am ou nt of t im e . W hich of t he f ol l ow ing A l ibaba Cl ou d ap p l icat ions can be com bine d t o p rovide a l ow op e rat ion and m aint e nance bu rde n and re l at ive l y l ow op e rat ing cost s? ( Nu m be r of corre ct answ e rs: 3) A . S e rve rl e ss W orkf l ow B. Fu nct ion Com p u t e C. Log S e rvice D . El ast ic Com p u t e S e rvice ( ECS ) E. S e rve r Load Bal ance r ( S LB) A nsw e r: A , C, D 10 . A D e ve l op e r is aske d t o im p l e m e nt a caching l aye r in f ront of RD S . Cache d cont e nt is e xp e nsive t o re g e ne rat e in case of se rvice f ail u re . W hich im p l e m e nt at ion be l ow w ou l d w ork w hil e m aint aining m axim u m u p t im e ? A . I m p l e m e nt A p saraD B f or Re dis in Cl u st e r M ode B. I nst al l Re dis on an ECS inst ance C. I m p l e m e nt A p saraD B f or Re dis in S t andard M ode D . M ig rat e t he RO S dat abase t o HBase t o save t he cache l aye r A nsw e r: A 3 / 11

4. 11. You can u se A l ibaba Cl ou d D at a t ransm ission se rvice ( D TS ) or t he op e n sou rce t ool Re dis- shake t o m ig rat e and synchroniz e dat a f rom a l ocal Re dis inst ance t o an A l ibaba Cl ou d Re dis inst ance . W hat is one f e at u re w hich D TS has bu t Re dis- shake doe s not ? A . Fu l l dat a m ig rat ion B. I ncre m e nt al dat a m ig rat ion C. O ne - w ay dat a synchroniz at ion D . Tw o- w ay dat a synchroniz at ion A nsw e r: D 12 . W hich of t he f ol l ow ing op t ions is not incl u de d in O bj e ct S t orag e S e rvice ( O S S ) obj e ct U RLs? A . Re g ion nam e B. Zone nam e C. Bu cke t nam e D . Fil e nam e A nsw e r: B Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam A . A p p l icat ions re q u iring hig h O PS , su ch as l og g ing ap p s B. S ce narios w he re com p l e x t ransact ion su p p ort is re q u ire d C. A p p l icat ions w he re J S O N is a g ood choice of st orag e f orm at D . A p p l icat ions re q u iring g e o- l ocat ion q u e rie s, su ch as l og ist ics or orde r st at u s ap p s A nsw e r: A , C, D 13. W hat are t he be ne f it s of cre at ing inde xe s on Pol arD B? ( Nu m be r of corre ct answ e rs: 2 ) A . I m p rove t he q u e ry e f f icie ncy S ELECT st at e m e nt s. B. I m p rove t he e f f icie ncy of D M L op e rat ions su ch as U PD A TE. C. I m p rove t he e f f icie ncy of D D L op e rat ions. D . Re du ce inval id dat a scanning . A nsw e r: A , D 14. W hich of t he se are su it abl e u se case s f or A l ibaba Cl ou d' s M ong oD B se rvice ? ( Nu m be r of corre ct answ e rs: 3) 15. A de ve l op e r acce sse s l og s in a Log S e rvice Log st ore via t he A PI . The e rror code re t u rne d by t he se rve r is 40 4. W hich of t he se cou l d be t he cau se ? A . The l og p roj e ct ( Proj e ct ) doe s not e xist 4 / 11

5. B. The re q u e st e d dig it al sig nat u re doe s not m at ch C. S e rve r int e rnal e rror D . S e rve r is bu sy: p l e ase t ry l at e r A nsw e r: A 16. Cl ou dM onit or' s " Eve nt M onit oring " f e at u re p rovide s you w it h e ve nt re p ort ing , q u e ry, and al arm f u nct ions, S core 2 so t hat you can col l e ct m e t rics on you r ru nning A l ibaba Cl ou d syst e m s, and re ce ive al e rt s w he n som e t hing g oe s w rong . W hich of t he se is NO T a corre ct de scrip t ion of t he m onit oring e ve nt t yp e s su p p ort e d by Cl ou dM onit or? A . For ECS , Cl ou dM onit or su p p ort s t he col l e ct ion and re p ort ing of im p ort ant ECS op e rat ing syst e m l e ve l e ve nt s, su ch as ap p l icat ion crashe s. B. For O bj e ct S t orag e S e rvice ( O S S ) , Cl ou dM onit or su p p ort s t he col l e ct ion and re p ort ing of bu cke t u p st re am and dow nst re am bandw idt h w hich e xce e ds t he f l ow cont rol t hre shol d or t he u se r- se l e ct e d re p ort ing t hre shol d. C. For S e rve r Load Bal ance r ( S LB) , Cl ou dM onit or su p p ort s t he col l e ct ion and re p ort ing of HTTPS ce rt if icat e e xp irat ion e ve nt s, f or ce rt if icat e s inst al l e d on S LB. D . For E- M ap Re du ce , Cl ou dM onit or su p p ort s t he col l e ct ion and re p ort ing of se rvice com p one nt st at u s, cl u st e r cre at ion f ail u re , and t im e ou t e ve nt s. A nsw e r: C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 18 . W hich of t he f ol l ow ing are corre ct , re g arding RA M u se rs? ( Nu m be r of corre ct answ e rs: 3) A . RA M u se rs can be cre at e d u nde r a sing l e A l ibaba Cl ou d accou nt , corre sp onding t o e m p l oye e s, syst e m s, or ap p l icat ions. B. RA M u se rs do not " ow n" t he re sou rce s t hat t he y cre at e ( t hose be l ong t o t he A l ibaba Cl ou d accou nt it se l f ) , and RA M u se rs cannot g e ne rat e and p ay t he ir ow n individu al bil l s ( cost s accru e t o and are bil l e d t o t he m ast e r A l ibaba Cl ou d accou nt ) . C. RA M u se rs be l ong t o an A l ibaba Cl ou d accou nt , bu t t he y can al so op e rat e as inde p e nde nt accou nt s w it h t he ir ow n p rivat e re sou rce s, not visibl e t o t he p rim ary A l ibaba Cl ou d accou nt . D . RA M u se rs m u st be au t horiz e d by t he A l ibaba Cl ou d accou nt t o l og in t o t he 17. W hat are t he advant ag e s of u sing El ast ic Cont aine r I nst ance ( ECI ) t o de p l oy ap p l icat ions com p are d w it h u sing ECS ? ( Nu m be r of corre ct answ e rs; 2 ) A . Low m aint e nance , l ow cost s B. S t art u p in se conds w it hou t t he ne e d t o re se rve re sou rce s C. Le ss sig nif icant visu al iz at ion l aye r p e rf orm ance l osse s D . S t rong e r isol at ion be t w e e n inst ance s A nsw e r: A , B 5 / 11

6. consol e or u se t he A PI t o m anag e t he re sou rce s ow ne d by t he A l ibaba Cl ou d accou nt . A nsw e r: A , C, D 19. W hich of t he f ol l ow ing st at e m e nt s are corre ct , w it h re g ard t o A l ibaba Cl ou d Log S e rvice ? ( Nu m be r of corre ct answ e rs: 3) A . A s an ag e nt f or col l e ct ing l og s, Log t ail can col l e ct l og s f rom e xist ing syst e m l og f il e s in a non- int ru sive m anne r B. The Log S e rvice f ront e nd se rvice adop t s an LVS + NG I NX archit e ct u re C. The Log st ore backe nd se rvice is de p l oye d on a sing l e m achine t o com p l e t e t he re al - t im e p e rsist e nce , inde xing , q u e ry and de l ive ry of Log st ore dat a t o M axCom p u t e D . Each l og w rit t e n t o t he Log S e rvice backe nd w il l be save d in t rip l icat e ( across t hre e se p arat e p hysical se rve rs) A nsw e r: A , B, D Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 2 3. The se rve r re sp onds t o t he u p l oad re q u e st 2 0 . A m obil e ap p l icat ion de ve l op e r int e nds t o u se A l ibaba Cl ou d O bj e ct S t orag e S e rvice ( O S S ) t o st ore t he e nd u se r dat a f or t he ir ap p , and t o e nsu re dat a isol at ion be t w e e n e ach u se r of t he ap p , t o p re ve nt one u se r f rom obt aining anot he r' s dat a. W hich m e t hod can be done t o m e e t t he se re q u ire m e nt s? A . RA M Pol icy B. S TS au t horiz at ion C. Bu cke t Pol icy D . O bj e ct Pol icy A nsw e r: B 2 1. A j ob hu nt ing w e bsit e st ore s u se r' s re su m e s in O bj e ct S t orag e S e rvice ( O S S ) The cu rre nt re su m e u p l oad p roce ss is as f ol l ow s: 2 2 . U se rs u p l oad re su m e s 2 4. The re su m e is u p l oade d t o t he se rve r 2 5. 1 he se rve r u p l oads t he re su m e t o O S S W hich of t he f ol l ow ing m e t hods can be u se d t o u p l oad obj e ct s t o O S S w it hou t re q u iring S t e p 3? A . S im p l e U p l oad B. Form U p l oad C. M u l t ip art U p l oad 6 / 11

7. D . A p p e nd U p l oad A nsw e r: D 2 6. W hich of t he f ol l ow ing dat abase conne ct ion m e t hods doe s A p saraD B f or Re dis su p p ort ? ( Nu m be r of corre ct answ e rs: 2 ) A . D M S ( D at a M anag e m e nt S e rvice ) B. al iyu n- cl l C. Re dis- cI l D . S e nt ine l A nsw e r: A , C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam C. Cre at e a g in inde x f or m u l t ip l e f ie l ds. D . Cre at e a g ist inde x f or m u l t ip l e f ie l ds. A nsw e r: C 2 7. I f a u se r f inds t hat t he Cont e nt D e l ive ry Ne t w ork ( CD N) cache hit rat e is l ow , w hat cou l d be t he re ason? ( Nu m be r of corre ct answ e rs: 3) A . W he n t he w e bsit e has l ow t raf f ic, t he CD N w il l re ce ive f e w e r re q u e st s and t his w il l re su l t in a l ow e r cache hit rat e . B. I nsu f f icie nt bandw idt h w as se l e ct e d w he n e nabl ing t he CD N se rvice , cau sing t he se rvice cap acit y re ach it s l im it t oo e arl y. C. HTTP He ade r se t t ing s m ay cau se cache m isse s. D . The orig in sit e has a l arg e nu m be r of dynam ic re sou rce s. E. Cache conf ig u rat ion is inap p rop riat e ( e x. ove rl y short Cache Exp iry Tim e f or p op u l ar f il e s) . A nsw e r: A , B, E 2 8 . A ssu m e t hat a com p any u se s A p saraD B f or Pol arD B. The com p any com m onl y q u e rie s u se rs base d on t he ir basic inf orm at ion, incl u ding : addre sse s, com p any nam e s, and I D nu m be rs. I n t his sce nario, w hat is t he be st p ract ice f or cre at ing a dat abase inde x ( or inde xe s) ? A . Cre at e a b- t re e inde x on e ach col u m n t o be se arche d. B. Cre at e a hash inde x on e ach col u m n t o be se arche d. 2 9. O n w hich op e rat ing syst e m s can you inst al l A l ibaba Cl ou d com m and l ine t ool s? ( Nu m be r of corre ct answ e rs: 3) A . W indow s B. Linu x C. m acO S D . A ndroid 7 / 11

8. A nsw e r: A , B, C Exp l anat ion: ht t p s: / / w w w . al ibabacl ou d. com / bl og / how - t o- m anag e - you r- al ibaba- cl ou d- l inu x- se rve r- f rom - t he - com m and- l ine - int e rf ace - %2 8 cl i%2 9_5938 78 30 . A de ve l op m e nt t e am cu rre nt l y su p p ort s an ap p l icat ion t hat is de sig ne d t o be de p l oye d on a sing l e se rve r' s l ocal m e m ory A s p art of m ig rat ing t o A l ibaba Cl ou d, t he t e am ne e ds t o u se A u t o S cal ing , and m u st t he re f ore m ove t he ir g am e st at e dat a of f of t he ir se rve rs, so t hat t he y can au t om at ical l y scal e u p and dow n w it hou t l osing g am e dat a. W he re shou l d t he t e am st ore t he se g am e re su l t s t o be st al l ow f or consist e nt re su l t s w it hou t im p act ing p e rf orm ance ? A . O S S B. RD S C. Re dis D . Log S e rvice A nsw e r: C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 31. To m e e t dat a anal yt ics re q u ire m e nt s on l arg e dat ase t s, w hich of t he se dat abase s can m e e t t he de m and f or st ru ct u re d and se m i- st ru ct u re d st orag e f or al m ost al l t yp e s of dat a, al be it w it h l im it e d su p p ort f or st rong t ransact ions? A . HBase B. O ce anBase C. RD S M ariaD B D . TS D B A nsw e r: A 32 . W hich of t he f ol l ow ing p rog ram m ing l ang u ag e s are su p p ort e d by t he A l ibaba Cl ou d S D K ? ( Nu m be r of corre ct answ e rs: 3) A . J ava B. S w if t C. PHP D . Pyt hon E. Bash she l l A nsw e r: A , C, D Exp l anat ion: ht t p s: / / w w w . al ibabacl ou d. com / he l p / doc- de t ail / 74712 . ht m 33. Com p any A has a l arg e nu m be r of f il e s st ore in A l ibaba Cl ou d O S S t hat ne e d t o be de l e t e d ( nu m be ring in t he t e ns of t hou sands) . 8 / 11

9. W hat is t he f ast e st , e asie st w ay t o de l e t e t he se f il e s? A . M anu al l y de l e t e t he m one by one B. Conf ig u re a l if e cycl e ru l e t hat m at che s t he e nt ire bu cke t , and de l e t e al l f il e s af t e r one day C. Cal l t he A PI f rom a scrip t , de l e t ing f il e s in bat che s D . D ire ct l y de l e t e t he bu cke t A nsw e r: B 34. you have a Node . j s base d ap p l icat ion and you p l an t o m ig rat e it t o A l ibaba Cl ou d Fu nct ion Com p u t e , w hich of t he f ol l ow ing st e p s is u nne ce ssary? A . M anu al l y inst al l t he Node . J s p ackag e in t he Fu nct ion Com p u t e consol e B. Cre at e a sing l e w e b ap p l icat ion and u p l oad t he corre sp onding code p ackag e via t he Fu nct ion Com p u t e consol e ( or f cl i) C. Conf ig u re p rog ram st art u p com m ands and acce ss p ort s in t he Fu nct ion Com p u t e consol e D . S t art and ve rif y t he ap p l icat ion in t he Fu nct ion Com p u t e consol e A nsw e r: A Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam D . U se syst e m p ol icie s t o bind re asonabl e p e rm issions p ol icie s t o u se rs or u se r g rou p s, and cu st om iz e p ol icie s f or m ore f ine - g raine d cont rol A nsw e r: A 35. A ce rt ain p roj e ct of Ent e rp rise A ( cal l e d Proj e ct - X) m ove s t o t he cl ou d and w il l ne e d t o u se a varie t y of s A l ibaba Cl ou d re sou rce s, su ch as ECS inst ance s, RD S inst ance s, S LB inst ance s, and O S S st orag e sp ace . The re are m u l t ip l e e m p l oye e s on t he p roj e ct w ho ne e d t o op e rat e t he se cl ou d re sou rce s. Be cau se e ach e m p l oye e has dif f e re nt j ob re sp onsibil it ie s and re q u ire s dif f e re nt p e rm issions, w hat is t he W RO NG ap p roach t o re sou rce m anag e m e nt ? A . Cre at e RA M u se rs e ach e m p l oye e , and se t l og in p assw ords or cre at e A cce ssK e y cre de nt ial s as ne e de d B. W he n cre at ing RA M f or u se rs, g ive e ach u se r bot h w e b consol e A ND A cce ssK e y cre de nt ial s: t he re is no ne e d t o ke e p t he se se p arat e C. W he n t he re are m u l t ip l e RA M u se rs u nde r a cl ou d accou nt , cre at e u se r g rou p s t o cl assif y and au t horiz e RA M u se rs w it h t he sam e re sp onsibil it ie s 36. A de ve l op e r is w rit ing l og s t hrou g h t he Log S e rvice A PI , and can se e via t he Log st ore m onit orin m e t rics t hat w rit e t raf f ic is abou t 10 M B/ s, bu t a 40 3 e rror is re p ort e d du ring t he w rit ing p roce ss. W hich of t he se is a p ossibl e cau se ? A . The re is sig nif icant ne t w ork de l ay B. The w rit e t hrou g hp u t of a sing l e p art it ion is l im it e d, and t he 10 M B/ s w rit e t raf f ic 9 / 11

10. e xce e ds C. The re is not e nou g h sp ace in t he Log st ore p art it ion D . The t arg e t p art it ion in t he Log st ore is not sp e cif ie d A nsw e r: B 37. W hich of t he f ol l ow ing op e rat ions can be p e rf orm e d t hrou g h Log S e rvice sA PI ? ( Nu m be r of corre ct answ e rs: 3) A . Col l e ct l og s base d on Log t ail conf ig u rat ion and Log t ail m achine g rou p inf orm at ion B. Cre at e a Log st ore , w rit e and re ad l og s t o t he Log st ore C. A cce ss cont rol f or dif f e re nt u se rs D . D e l ive r l og s t o O S S f or st orag e and anal ysis A nsw e r: A , B, C Best Alibaba Cloud ACA-Developer Exam Questions [2022] - Helping In Passing Real ACA-Developer Exam 10 / 11

11. G e t f u l l ve rsion of A CA - D e ve l op e r Q &A s 11 / 11