Information Technology Reference
In-Depth Information
are.taken.to.a.Web.site..As.that.site.loads.up,.a.lot.is.going.on.
that.we.look.at.in.greater.detail.soon..But.one.of.the.impor-
tant.things.to.this.part.of.our.conversation.is.that.many.dif-
ferent.pieces.of.the.Web.site.code.are.being.loaded.onto.your.
computer.so.it.can.show.you.the.site.in.all.its.glory.
You.know.that.most.sites.have.pictures,.text.in.different.
formats,.backgrounds,.possibly.even.moving.graphics.or.vid-
eos.. All. of. those. items. are. coded. into. the. Web. page. in. a.
speciic. Internet. language—the. most. common. of. which. is.
called.HTML.(Hypertext.Markup.Language)—and.that.code.
language.controls.what.you.see.on.the.page..If.you.click.on.
part.of.the.page.or.even.just.move.your.mouse.over.part.of.
it,.the.code.might.reveal.something.new.or.create.some.other.
kind.of.action..All.this.happens.by.the.design.of.the.page.as.
developed.by.the.HTML.code.designer.
Remember. when. we. discussed. random. access. memory,.
or. RAM,. on. your. computer. and. how. data. accessed. from.
that. memory. is. more. quickly. accessed. than. it. is. from. your.
hard.drive?.Well,.data.that.have.to.be.downloaded.from.the.
Internet.over.cables.or.a.wireless.connection.can.take.even.
longer.to.load.up.and.be.displayed.or.otherwise.acted.upon.
during.a.computer.session.
To.make.your.experience.with.an.application.more.eficient.
and.effective,.most.applications,.including.Web.browsers,.will.
move.parts.of.what.you.are.experiencing.into.memory.for.the.
fastest.recall..So,.part.of.what.happens.when.you.are.looking.
at.a.Web.site.using.a.browser,.is.that.some.of.that.data.are.
held.in.memory.during.the.session.
But.all.of.the.data.required.to.make.that.Web.site.work.are.
also.stored.in.the.cache.ile,.because.it.is.still.much.quicker.to.
access.the.data.directly.from.your.computer's.hard.drive.than.
it.might.be.to.download.it.from.the.Internet.every.time.you.
need.it..This.is.especially.true.of.graphic.iles.and.movies,.but.
it.actually.holds.true.for.nearly.everything.that.you.see.and.
do.on.the.Internet.
This. is. the. most. important. reason. for. the. cache. ile.. It.
allows.you.to.move.around.on.the.Internet,.and.when.parts.
