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Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 1
BI 3: CC DCH V PH BIN TRN INTERNET
I. GII THIU
I.1. Tm tt ni dung
Bi hc gm nhng ni dung chnh nh sau:
Gii thiu tng quan v Internet.
Gii thiu mt vi cng c s dng dch v trn Internet.
Gii thiu mt vi dch v rt ph bin trn Internet hin nay. l:
o Dch v tm kim: Gip cc bn khai thc ngun tri thc v tn trn
Internet
o Dch v th in t: y l phng thc giao tip ph bin nht trn
Internet
o Dch v Chat: Gip bn trao i, giao tip trc tip vi nhau trn
Internet
o Dch v din n thng tin: L ni bn c th tham ra trao i, tho
lun theo ch
o Dch v lu tr trc tuyn: y l dch v gip bn lu tr d liu
trn Internet
o Dch v qun l lch c nhn: Tin ch ny gip bn d dng qun l
thi gian, tng hiu qu lm vic
o Dch v mng x hi: Cung cp mt x hi o, ni cc bn c th kt
bn, gii tr, lm vic, tr chuyn vi rt nhiu ngi khc
Trong bi hc, ti s nhn mnh vo cc tnh nng vi cc ng dng c th
trong i sng, cng vic v hc tp ca cc anh/ch.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 2
I.2. Yu cu hc tp
d dng nm bt tip thu bi hc ny, cc anh/ch cn chun b sn cho mnh
cc kin thc c bn v my tnh v Internet.
Bn nn trang b sn cho mnh nhng thit b cn thit c kt ni ti Internet (my
tnh, in thoi thng minh...) . C kh nng ci t cc phn mm trn .
I.3. Nhim v hc tp
Sinh vin cn tham gia y cc nhim v trn h thng hc trc tuyn, nh hc
ci bi hc dng hc liu in t, ti v cc hc liu dng Text v dng Audio ca
mi tun hc (nu c).
Sau mi bi hc dng hc liu in t u c bi trc nghim (10 cu hi),
sau khi hc bi sinh vin cn hon thnh t nht 80% s cu hi mi c
ghi nhn l hon thnh bi hc.
Sinh vin cn hon thnh tt c cc bi luyn tp v bi kim tra trc
nghim ca mi tun hc trn h thng m bo im chuyn cn v
im kim tra gia k iu kin d thi tp trung cui k.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 3
II. NI DUNG
II.1. Tng quan v Internet v cc dch v ph bin trn Internet
II.1.1. L thuyt
Tin bc cng th gii, Vit Nam chng ta ang thc hin hi nhp v Internet l
mt phn trong . Chng ta ang dn lm ch c nhng cng ngh tin tin, nn
vn minh ca nhn loi.
Cc thit b in t nh my tnh PCs,Laptop, in thoi di ng, my tnh bng
qu quen thuc i vi chng ta. Nhng thit b ny l thnh phn thit yu
trong i sng, cng vic v hc tp ca mi chng ta, gip chng ta s dng ti
nguyn v hn ca Internet.
Ti nguyn trn Internet mang theo tri thc ca nhn loi. Internet gip chng ta v
s nhng cng vic, lm cho cuc sng chng ta tr nn th v hn, gip chng ta
hon thin bn thnTin ch ca Internet l khng cn bn ci. iu quan trng l
chng ta s khai thc nhng tin ch ny nh th no?
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 4
Chng ta thng s dng Internet thng qua 2 hnh thc sau:
Tip nhn thng tin chnh l khai thc cc thng tin trn Internet (nh tm
kim thng tin, c bo, kim tra Email,).
mc cao hn, chng ta s tng tc trn Internet. Tc l ngoi vic chng
ta thu nhn thng tin v, chng ta cn a ra nhng thng tin ca mnh,
kin ca mnh, nhn nh ca mnh hay lm 1 vic g trn Internet. Mt
vi hot ng d thy c hnh thc ny nh tham gia mng x hi, Chat
hay tham gia vo din n.
Cc dch v Internet ph bin trn c pht trin v cung cp bi rt nhiu cng ty
sn xut phn mm rt ln nh: Facebook, Google, Microsoft.... C rt nhiu sn
phm dch v trn Internet, nhiu trong s l cc sn phm min ph. Sn phm
min ph d b hn ch chc nng hn so vi cc sn phm mt tin nhng cht
lng vn m bo cho chng ta yn tm s dng.
s dng c cc dch v trn Internet cn phi c cc cng c. Cc cng c
l cc phn mm c ci t trn cc thit b ca bn. V trnh duyt Web l mt
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 5
trong s . Khi tham gia vo Internet, trnh duyt Web l mt cng c khng th
thiu. Trnh duyt web l mt phn mm ng dng cho php ngi s dng xem v
tng tc vi cc vn bn, hnh nh, on phim, nghe nhc, tr chi v cc thng
tin khc trn Internet. Trnh duyt web cho php ngi s dng truy cp cc thng
tin trn cc trang web mt cch nhanh chng v d dng thng qua cc thanh a ch
lin kt ca trnh duyt v d nh:
http://www.ehou.edu.vn
http://www.hou.edu.vn
C nhiu trnh duyt web khc nhau, trong thng dng nht l cc trnh duyt:
Internet Explorer, Safari, Firefox, Google Chrome Cc trnh duyt khc nhau i
khi c th hin th ni dung khc nhau.
Cn rt phn mm khc i theo cc dch v tin ch trn Internet nh phn mm
Chat, phn mm mng x hi, phn mm hp th in t... Vic s dng thnh tho
cc phn mm ny cng l cch s dng cc dch v trn Internet c hiu qu.
Trong cc phn sau, ti s i chi tit vo mt vi dch v trn Internet.
http://www.ehou.edu.vn/http://www.hou.edu.vn/Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 6
II.2. Dch v tm kim trn Internet
II.2.1. L thuyt
Nh trnh by trn, cc bn truy cp vo cc trang web thng qua cc a ch
lin kt ca mi Website. Hng nm, c hng triu Website mi c sinh ra mang
theo rt nhiu thng tin, hnh nh, video... m c th bn quan tm.
Mt cu hi t ra: Lm sao bn c th tm thy cc trang Web trn Internet?
Dch v tm kim s tr li cu hi cho bn. Bn hy m t nhng g bn quan
tm di dng cc t kha, sau s dng dch v tm kim thy c cc trang
web cha ni dung m bn quan tm. Trn Internet c nhiu cc trang web h tr
chc nng tm kim thng tin. Vit Nam l:
http://xalo.vn
http://baamboo.com
http://socbay.com
http://timnhanh.com
http://www.diadiem.com : tm kim bn / ng i
http://www.vietgle.vn : tra t in/ tm kim a danh/ danh nhn lch s, vn
ha
Trn th gii l:
http://www.google.com
http://www.yahoo.com
http://www.bing.com
Bc xc nh t kha v to lp chin thut tm kim l rt quan trng.
Vy chn t kha cn qua cc bc no. Trc tin bn phi nm c t kha l
g? T kha l mt t hoc cm t c rt trong tn ch hoc chnh vn ti liu,
http://xalo.vn/http://baamboo.com/http://socbay.com/http://timnhanh.com/http://www.diadiem.com/http://www.google.com/http://www.yahoo.com/http://www.bing.com/Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 7
n phn nh mt phn ni dung hoc ton b ni dung ca ch hoc ti liu .
Cc bc tm t kha cn c tin hnh nh sau:
Bc 1: Xc nh t ch o tm kim thng tin cho ln u tin
V d : hc E-learning nh th no?
t ch o l hc tp vi E-learning do c tm trc.
Bc 2: Chn t c ngha, trnh chn t a ngha, lc b cc ph t (lin t,
gii t, mo t).
Vi v d trn, ta s tm li vi t kha: hc tp E-learning.
Bc 3 : Xc nh t ng ngha, t c ngha lin quan (t c ngha rng hn
hoc hp hn).
Vi v d trn, ta s tm tip vi t kha: hc tp trc tuyn
T kha ca bn a ra cn c th v st vi ch . Bn cn to lp chin thut tm
kim khng ch kt qu cho ph hp. To lp chin thut tm kim l vic thit
lp lgic gia cc t tm kim. Vic s dng tt cc t ni ca ton t lgic
(Boolean) s cho ra kt qu st hn vi mong mun ca bn. Cc t ni (ph bin)
l:
OR - Hoc t ny hoc t kia.
V d: E-learning OR Marketing: S ra lng kt qu rt ln
AND (+) - Tt c u phi c.
V d: E-Learning AND Marketing:S ra lng kt qu b thu hp
NOT du (-) Loi tr, gii hn.
V d: E-Learning NOT Marketing: Kt qu ch c khi nim E-learning, loi b
t Marketing
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 8
Bn c th kt hp cc ton t vi nhau c nhng kt qu tt hn.
Ngoi tm kim Website, bn c th tm kim cc ti nguyn khc trn Internet
(nh hnh nh, video, tin tc, sch, blog,...). Vi cc ti nguyn ny, bn cng c
th c t r cc tiu ch tm kim c cc kt qu tt hn.
V d: Khi tm kim nh, bn ch r kch thc file, kch thc nh, loi nh
Nu bn gp kh khn trong vic tm t kha, cc cng c tm kim cng s
gip bn tm ra cc t kha tm kim bng cch. Khi bn g vo tm kim, cc
cng c tm kim s gi cho bn cc t, cm t c tm kim nhiu, thng
dng cho bn la chn.
Hin nay, nhiu Web tm kim cn c th thc hin tm kim theo ging ni
(Voice Search), qua bn khng phi g vo tm kim m ch cn ni l cc
Web tm kim ny c th hiu c (in hnh l Google). Voice Search trn
Google gi h tr cho bn tm kim vi ngn ng Ting Vit.
Cc dch v tm kim ngy cng dn i n hon thin, vy chng ta hy tm
hiu nhiu hn na v dch v ny phc v tt trong i sng, cng vic hay
hc tp.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 9
II.3. Dch v th in t (Email)
II.3.1. L thuyt
Email l mt dch v th in t, l phng tin truyn ti thng tin nhanh
chng. Mt mu thng tin (th t) c th c gi i nhanh chng qua cc mng
my tnh c bit l mng Internet. Thng tin c th c gi i t mt my
ngun ti mt hay rt nhiu my nhn trong cng lc. Ngy nay, Email chng
nhng c th truyn gi c d liu vn bn thng thng m n cn c th
truyn c cc dng thng tin khc nh hnh nh, m thanh, video...
C 2 loi cng c h tr cho ngi dng s dng th in t l Email Client
v Web Mail:
Email client, hay phn mm th in t (Microsoft Outlook, Mozilla
Thunderbird, Netscape Comunicator hay Eudora). Mt cch gi tn thng
dng khc ca email client l ng dng th in t (email application) nu
khng b nhm ln. Email client s t ng ng b th trn Internet (chy
ngm).
WebMail hay hp th in t trn Web. s dng bn cn s dng thit b
c kt ni ti Internet v s dng trnh duyt truy cp. Mt vi trang Web
Mail thng dng l:
o http://gmail.com
http://gmail.com/Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 10
o http://hotmail.com
o http://mail.yahoo.com.vn
Ni cung cp phn mm cng nh phng tin chuyn th in t gi l nh
cung ng dch v th in t (Email Sevice Provider).
Hin nay c nhiu dch v th in t c cung cp min ph. Tuy c cc hn
ch v chc nng so vi cc dch v tr tin, nhng i vi chng ta l ngi
dng c nhn th cc dch v min ph cng c th p ng y .
Mi ngi c th c mt hay nhiu a ch email. Mi hp th s c mt a ch
phn bit khng bao gi trng vi a ch email khc. Cu trc email nh sau:
@
V d: Sinh vin Nguyn Vn A khi nhp hc s c nh trng cp cho a
ch Email: [email protected]
http://hotmail.com/http://mail.yahoo.com.vn/mailto:[email protected]Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 11
Cc u im ca th in t so vi bu chnh thng thng:
D son tho: Thay v vit th bng giy mc v bt th ngi gi ch cn g
ch t bn phm ca my tnh v bit dng mt phn mm th in t.
D qun l: Mi th gi n, gi i, th rc v k c th xa s c
qun l d dng. Thm ch bn c th t to cc nhm th qun l ph hp
vi bn.
Tin li: C th c th mi lc mi ni c thit b kt ni ti Internet.
Tc cao: Vn tc truyn th in t ch vi giy n vi pht v chi ph
rt nh khng ng k so vi gi qua ng bu in.
Lu tr ln: Bn c th lu gi nhiu th hn gp nhiu ln. Cc hm th
in t c dung lng n hng Gbyte, nh dch v ca Gmail cho bn
15GB dung lng lu tr vi mi ti khon, tng ng vi hng chc
nghn l th in t.
An ton: S dng th in t, bn cn phi ng nhp bng ti khon ng
k vi nh cung cp dch v. ng ngha vi vic bn s khng phi lo lng
ai cng xem trm th ca mnh.
Nhiu chc nng: Ngoi chc nng thng thng nhn v son tho
email, cc phn mm th in t c th cn cung cp thm nhng chc nng
khc nh l:
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 12
o Chuyn tip th: Ngi nhn c th chuyn i ni dung l th cho
mt hay nhiu ngi khc. Tuy nhin chc nng ny c khnng gy
ly lan virus my tnh.
o S a ch (Addresses hay Contacts): Dng ghi nh tt c cc a
ch cn thit cho cng vic hay cho c nhn.
o Cng c tm kim th in t (find hay search mail).
II.3.2. Dch v chat
II.3.2. L thuyt
Dch v Chat khc vi dch v th in t l bn c kt ni trc tip vi
ngi ang giao tip vi mnh. Bn c th gi i mt tin nhn v nhn cu tr
li tc th. Cng ging nh th in t, bn c th s dng dch v Chat thng
qua 2 hnh thc ph bin: Chat trn Web hoc s dng phn mm ci t trn
thit b.
Dch v Web Chat l dch v m bn thng c thy trn cc din n. Dch
v Web Chat thng s dng Chat nhm dch v cung cp cho cc thnh vin
ang c mt trn din n tho lun, trao i trc tuyn vi nhau (Dch v din
n ti s m t trong phn sau).
Hnh thc chat bng phn mm ci t trn thit b ph bin hn, c nhiu
nh cung cp ln nh Yahoo, Skype... h tr. Khng ch PC, cc phn mm c
th ci t trn Smart Phone, my tnh bng Gip bn tham gia mng Chat
thng xuyn. s dng dch v ny, bn cn ng k mt ti khon vi nh
cung cp dch v. Bn s s dng ti khon ny tham gia chat vi bn b.
Phn mm Chat cho php bn lu li c danh sch bn b ca mnh. Bn c
th phn nhm trn danh sch ny d qun l. Bn gi, nhn tin nhn thng
qua ca s Chat. Ngoi vic gi cc tin nhn thng thng, bn c th chn
thm vo trong ni dung tin nhn nhng biu tng, hnh nh tin nhn thm
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 13
sinh ng. Thm ch, vi nhiu cc phn mm Chat s cho php bn gi tp tin
nh km, bi ht, b phim, bc tranh Cc chc nng ny s gip cho ni
dung Chat th v hn.
Phn mm Chat c th gip bn cp nht mt vi thng tin ca mnh ngay tc
th ti ton b danh sch bn b. Mt vi thng tin c bn:
Avatar: nh i din ca bn hin th trn phn mm Chat.
Status: Mt on tin ngn m t iu g bn ang quan tm hay suy ngh
no ca bn.
Trng thi: Trng thi trc tuyn ca bn (ang trc tuyn, khng c y,
trng thi n, bn)
Thm na, phn mm Chat c th thng bo cho bn bn khi c ai trc tuyn
(online) hay ngoi tuyn (offline), gi cho bn 1 tin nhn, 1 tp tin
Ngoi cc chc nng c bn nu trn, phn mm chat cn c th h tr cho
bnmt vi cc chc nng khc nh:
Gi tin nhn ti nhiu ngi mt lc (rt hu dng khi bn c ni dung
mun gi i ng thi ti nhiu ngi).
V d: Thng bo lch hc, lch hp, mi sinh nht, mi ci
Gi tin nhn Offline: D cho ngi nhn khng trc tuyn vn c th nhn
c tin nhn khi ng nhp tr li.
Tham gia Chat nhm (nhiu ngi cng Chat vi nhau): Cng ging nh
hnh thc Chat nhm trn Web.
Gi in min ph (Chat voice): Khi bn c ng truyn Internet tt, chc
nng gi in min ph c th gip bn tit kim c nhiu chi ph thay cho
hnh thc gi in thng thng.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 14
Mt vi dch v chat rt ph bin:
Window Live Messager: Dch v Chat c sn trn cc h iu hnh
Windows c. T Windows 7 tr i, dch v ny khng cn m chuyn
sang cc h iu hnh Windows Mobile, Windows Phone.
Yahoo mt thi rt ph bin c s dng rng ri. Yahoo cung cp tt c
cc chc nng k trn. Nhng vi s pht trin nhanh chng ca Facebook
v Skype, s lng ngi s dng Yahoo t i rt nhiu.
Skype gi ang ni ln vi cc u im v tc v tnh hu dng. Skype
c kh nng truyn ti File c kch thc ln v kh nng chat voice c cht
lng rt tt. Skype c dng rt nhiu trong cc c quan, t chc v
trng hc.
Mt vi phn mm ni ting khc nh: Viber, Line, Google Hangout u
im ca cc dch v ny l cung cp dch v gi in min ph rt tt nn
c ci t nhiu trn cc thit b di ng.
Chat trn mng x hi: Dch v chat ny ti s m t chi tit hn trong cc
phn sau.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 15
II.3.3. Bi tp
Cu hi 1. Nhng thit b no l nhng thit b ch yu gip chng ta s dng ti
nguyn v hn ca Internet?
A. PCs
B. Laptop
C. in thoi di ng
D. Tt c cc p n u ng
Cu hi 2. C my loi cng c h tr cho ngi dng s dng th in t?
A. 2
B. 3
C. 4
D. 5
Cu hi 3. u khng phi l dch v th in t:
A. Gmail
B. Hotmail
C. Google Map
D. Yahoo
Cu hi 4. Dch v no khng phi l dch v Chat?
A. Window Live Messager
B. SkyDrive
C. Yahoo
D. Facebook Chat
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 16
Cu hi 5. Chat Voice l dch v g?
A. Cho php gi in min ph
B. Cho php gi tin nhn min ph
C. Cho php gi tin nhn Offline
D. Cho php chat theo nhm
II.4. Dch v mng x hi
II.4.1. L thuyt
Dch v mng x hi l dch v cung cp mt x hi o trn Internet m cc
thnh vin trong mng x hi c gi l c dn mng. Tht vy, mng x hi
thc s l mt x hi rng ln m trn , cc dn mng c th tha sc trao
i, chia s thng tin, phim nh, x lun...
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 17
tham gia lm thnh vin ca mt mng x hi, bn cng cn c ti khon
ng nhp. Sau khi ng nhp, bn c th bt u thc hin kt bn. Cc thnh
vin trong mng x hi lin kt vi nhau thng qua hnh thc kt bn. Mng x
hi da theo cc thng tin ca bn lin tc a ra danh sch bn b m c th
bn quen. Vi cch lm ny, mng x hi c th thu ht hng trm triu thnh
vin trn khp th gii, t mang theo l mt khi lng thng tin khng
l.
Mi thnh vin c mt trang ring (gi l trang c nhn) v c th trnh by
trang c nhn ny theo mnh. Cc thnh vin c th chia s thng tin ca mnh
trn bao gm:
Thng tin c nhn v gia nh
Thng tin qu trnh hot ng hc tp v cng tc
Thng tin s thch, thi quen
Thng tin bn b
Ni dung chia s c th l nhng bi vit, cng c th l nhng bc nh chia s.
Chc nng Tag nh cho php bn nh du bn b ca mnh ln trn bc nh.
im ni bt ca mng x hi l kh nng tng hp thng tin mnh m, cho
php mi c dn mng la chn lung thng tin nhn v. Ti trang chnh ca
mnh, bn c th tm thy rt nhiu thng tin c mng x hi tng hp lin
tc. Vi cc thng tin nhn c, bn c th th hin s ng tnh ca mnh vi
ai thng qua hnh thc like hoc trnh by kin ca mnh vi
commenthoc n i nu khng mun theo di na. Mng x hi cng cho
php bn Chat i trc tip vi bn b. D khng nhiu tnh nng nh phn
mm chat m ti nu trn, vic tham tham gia chat trn mng x hi cng
v cng tin li bi tn dng c danh sch bn b c trn mng x hi.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 18
Thng tin m mng x hi mang li thc s hu ch. Qua bn c th:
Hc tp nhiu lnh vc khc nhau ngy cng hon thin bn thn.
Kt ni vi nhiu bn b mi.
Tip tc gi lin lc vi bn b v ngi thn m khng cn gp mt trc
tip.
Hn th na, mng x hi c th tr thnh cng c c lc bn gii thiu v
bn thn hay cc sn phm kinh doanh ca mnh.
V d: Bn l mt kin trc s c nng lc, bn m t thng tin ca mnh trn
mng x hi. Chuyn ng hng ngy ca mng x hi s gip cho thng tin
ca bn ti c tay ca rt nhiu ngi. S khng ngc nhin nu mt ngy
bn nhn c mt l th tuyn dng hp dn.
Hoc c th bn mun cung cp cc sn phm thi trang snh iu, bn c th
a nhng hnh nh v sn phm ca mnh ln trn mng x hi. Nu bit cch
s dng hiu qu, mng x hi s gip bn nng cao doanh thu tht nhanh
chng.
Mng x hi cng c th tr thnh cng c gip cho bn lm vic nhm hiu
qu hn. Mng x hi c th gip cho cc cng vic:
Bo co tin cng vic, kt qu cng vic
Trao i, tho lun trong nhm
Thng bo tin tc ca nhm
Chia s ti liu
To s kin, thng bo ti tt c thnh vin trong nhm
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 19
Hin nay, mng x hi Facebook rt mnh ti Vit Nam cng nh trn th gii.
Ngoi ra cng cn rt nhiu mng x hi khc nh: Friendster, Twitter,
Netlog,
II.5. Dch v lu tr trc tuyn
II.5.1. L thuyt
Thng thng chng ta hay lu tr d liu trong my tnh ca mnh, v mun mang
d liu i u th cn phi s dng Usb hoc cng mang theo. iu ny kh
l bt tin v c nhng ri ro c th xy ra nh d liu b hng hay khng m
c
Khc phc nhc im , dch v lu tr trc tuyn ra i. Dch v lu tr trc
tuyn (lu tr trn mng) l dch v lu tr cho php ngi dng truy cp vo d
liu ca mnh t bt c u thng qua Internet.
Bn cng cn phi ng k ti khon s dng dch v ny. Lu lng min ph
m cc nh cung cp cho ngi dng c th ln n vi Gbytes v c th tng thm
trong tng lai.
S dng dch v lu tr trc tuyn bn cng c th thng qua 2 hnh thc: Trn
Web hoc s dng phn mm ci t trn thit b. 2 hnh thc ny khc nhau mt
chi tit l: Phn mm ci t c th h tr thm thng bo khi c d liu mi
c cp nht. C 2 hnh thc u p ng y cc chc nng c bn, l: Sao
lu, ng b v chia s d liu. Trong :
Sao lu d liu l thao tc to ra mt hay nhiu bn sao ca mt file d liu
(gi l d liu gc) v lu tr an ton ti mt ni khc nhm c th phc hi
khi d liu gc b h hng, mt mt. Mi bn sao lu ca file c gi l 1
phin bn (version). Khi sao lu d liu, vic lu tr bao nhiu phin bn
ph thuc vo tm quan trng ca d liu, kh nng mt mt, chi ph,
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 20
ng b d liu l lm cho d liu ging nhau v mi mt. Bn c th ng
b d liu gia my tnh c nhn, in thoi di ng, my tnh bng.
V d: Bn i du lch chp mt bc nh c trn in thoi. Bc nh c a
ln dch v lu tr trc tuyn. M ca bn nh vo my tnh ng b v c th
lp tc thy c hnh nh ca bn.
Chia s d liu l cho php ngi khc truy cp v s dng d liu ca mnh.
Chc nng ny rt hu ch khi lm vic nhm.
Mt vi nh cung cp dch v lu tr trc tuyn nh: Dropbox, Box, Skype
Drive, Google Drive
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 21
II.6. Dch v lch trc tuyn
II.6.1. L thuyt
Dch v lch trc tuyn l dch v cho php xy dng lch lm vic trc tuyn
ca mnh trn mng, cho php mi ngi hoc cc nhm lm vic c th lin kt
lm vic trc tuyn bt k ni no. Ngi dng c th tm v xc nh mi
lch trnh lm vic chia s vi nhm cng tc khi s dng dch v lch trc
tuyn.
Tham gia dch v lch trc tuyn cng cn c ti khon. S dng dch v lch
trc tuyn c th thng qua Web, nhng d dng hn, bn hy ci t phn
mm lch trc tuyn trn my tnh hay cc thit b cm tay ca mnh tin theo
di.
Lch trc tuyn thng thng c th cho php bn theo di trong cc bng lch
theo Thng, Tun hoc c theo tng ngy. iu ny c ngha l bn c th lp
lch chi tit ti tng ngy, gi c th.
Lch trc tuyn cho php bn ng b cc ngy l tt, cc ngy k nim ca t
nc, hay cc ngy sinh nht ca gia nh vo bn b (c th thng qua cc ti
khon email, chat hay mng x hi).
Lch trnh cc vic cn lm c th to ra mt cch d dng bng cch nhp vo
thng tin n gin v xc nh ngy hoc tun c th cho cng vic . Dch v
lch trc tuyn s t ng a ra thng bo cho ngi dng v s v cn gii
quyt vo mt lch trnh nh no .
V d: bn c mun t chc 1 cuc hp v mun thng bo ti nhiu ngi
khc.Vi dch v ny, bn ch vic ng k cuc hp ln lch trc tuyn, v
thm vo nhng ngi c lin quan. Ngay lp tc thng tin lch s c cp
nht ti nhiu ngi. V khi c thng bo, mi ngi u nhn c.
Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 22
Dch v ny c cc quc gia pht trin rt u chung bi c th gip cho nng
cao nng xut lm vic. Google Calendar hin nay i u nh l dch v lch
trc tuyn min ph tt nht hin nay.
II.7. Dch v din n in t
II.7.1. L thuyt
Din n in t hay cn gi l Forum l 1 Website ni mi ngi c th trao i,
tho lun, by b kin v nhng vn cng quan tm. Cc vn tho lun c
lu gi di dng cc trang tin.
y l hnh thc tho lun khng trc tip, bn c th a bi tho lun ca mnh
ln Forum, c khi ngay lp tc hoc c khi vi ngy, vi tun, thm ch vi thng
sau bn mi nhn c kin phn hi.
tham giao tho lun, bn cn ng k ti khon. Ti cc din n, cc ti khon
cng c nhng cp khc nhau. Din n thng c rt nhiu nhm ch
(Thread) v cng a dng. Trong cc nhm ch c rt nhiu ch nh. V
trong cc ch ny c nhiu bi vit.
Cc thnh vin tham gia s d dng theo di cc bi vit mi, cc bi vit c xem
nhiu, cc ch mi, cc thnh vin ang trc tuyn... c cp nht lin tc
ngoi trang ch din n.
Khi tham gia din n, bn nn ch ti cc quy nh m din n a ra. Trn
din n, bn c th chia s nhng kinh nghim hay gii thiu sn phm ca mnh.
Din n cng l mt ngun thu thp thng tin rt tt bi lng thng tin truyn ti
trn cc din n l rt ln. Bn c th tham kho mt vi cc Forum ph bin ti
Vit Nam hin nay nh:
http://www.tinhte.vn/
http://www.vn-zoom.com/
http://www.tinhte.vn/http://www.vn-zoom.com/Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 23
http://nhattao.vn/
http://muare.vn
http://webtretho.com
II.7.2. Bi tp
Cu hi 6. u l dch v lch trc tuyn?
A. Google Maps
B. Gmail
C. Google Calendar
D. Google Search
Cu hi 7. Lch trc tuyn cho php bn ng b thng tin no?
A. Cc ngy l tt
B. Cc ngy k nim ca t nc
C. Ngy sinh nht ca bn b
D. Tt c cc p u ng
Cu hi 8. Bn c th theo di bng lch theo?
A. Thng
B. Tun
C. Ngy
D. Tt c cc p u ng
Cu hi 9. Din n trn Internet dng ?
A. Cc thnh vin giao lu trc tuyn thi gian thc vi nhau
B. Cc thnh vin tho lun trc tuyn thi gian thc vi nhau
http://nhattao.vn/http://muare.vn/http://webtretho.com/Trung tm o to E-learning C hi hc tp cho mi ngi
Nhp mn Internet v E-Learning - Bi 3 Trang 24
C. Cc thnh vin c th trao i, hc hi v nhiu lnh vc c cng s
quan tm.
D. Tm kim thng tin.
Cu hi 10. Thng tin no thng c lin tc cp nht cho cc thnh vin d
dng theo di?
A. Cc bi vit mi
B. Cc ch mi
C. Thnh vin trc tuyn
D. Tt c cc p n u ng
III. TNG KT KIN THC
Nh vy trong bi hc ny, ti gii thiu vi cc bn v mt vi dch v thng
dng trn Internet. Bao gm:
Dch v tm kim
Dch v hp th in t
Dch v Chat
Dch v din n in t
Dch v lu tr trc tuyn
Dch v mng x hi
Dch v qun l lch c nhn
Chc Anh/Ch hc tp tt!