Information Technology Reference
In-Depth Information
on.a.computer..If.there.is.only.one.user.and.if.that.user.has.
administrative.rights,.then.all.of.the.subfolders.will.be.acces-
sible.. However,. if. there. are. different. users,. they. will. only.
have.rights.to.read.or.access.or.change.the.iles.in.their.own.
proile.folder.
With. different. partitions. on. a. drive,. access. can. be. cre-
ated. and. managed. through. rights. assignments. or. in. some.
cases.through.the.actual.applications.that.control.the.startup.
or. movement. within. the. operating. system.. Different. parti-
tions.can.actually.have.different.operating.systems.on.them.
to.which.you.must.separately.log-in.at.the.computer.startup.
You.can.also.use.virtual.machine.software.to.create.a.com-
puter.within.your.computer..This.type.of.software.basically.
will.allow.you.to.set.up.a.separate.operating.system.with.its.
own.programs.and.data,.all.using.your.same.hardware.(such.
as.the.keyboard,.mouse,.monitor,.DVD/CD.drives,.network.
connections,.and.USB.or.other.connections),.but.existing.as.
a.ile.within.your.computer..Access.to.that.system.can.be.con-
trolled.via.a.password.as.well,.and.this.can.be.used.to.store.
applications.and.data.that.are.only.accessible.to.those.with.
the.right.authentication.
Virtual.machines.are.becoming.a.common.way.to.share.
space. on. servers. in. data. centers. and. each. of. those. virtual.
servers.can.have.different.authentication.protocols.for.access.
to.their.data..This.practice.is.becoming.very.popular.because.
it.saves.resources.in.both.physical.space.and.in.energy.con-
sumption.by.using.one.physical.server.device.to.host.many.
different.virtual.server.instances.
Within.a.network.you.can.also.create.partitions.or.virtual.
networks..Similarly,.these.will.only.be.accessible.to.those.with.
the.right.credentials.or.sometimes.even.the.necessary.physi-
cal. access.. These. can. be. divided. using. networking. devices.
such.as.irewalls,.switches,.and.routers.that.only.allow.certain.
trafic.to.access.those.segments.of.the.network.
A.inal.control.that.you.can.put.in.place.with.relatively.lit-
tle.cost.is.simply.to.physically.separate.the.data.storage..This.
could.be.in.the.form.of.a.limited.access.data.center,.locked.
