[English (auto-generated)] An In-Depth Look at the Internet _ Google IT Support Certificate [DownSub.com].txt
hi
my name is victor escapido and i'm a
corporate operations engineer i'm
excited to spend the next few lessons
with you before my colleague and friend
jion takes the reins and wraps up the
rest of the lessons on the internet
before we dive in though i'd like to
tell you a little bit about myself my
passion for it began way back when i was
9 years old and my dad brought home our
first computer he was a mechanical
engineer and started using the computer
to help him with his cad work this was
the first time i was exposed to
computers and later realized you can
install new software on it including
computer games as i tinkered with the
computer surely to my dad's dismay i
became more and more interested in how
it worked and eventually started to open
up the case and peek inside i found
pieces that could be removed and even
some that shouldn't learning through
trial and error along the way
i couldn't really explain what it was
but i just found the mechanics of how it
all worked together so fascinating
looking back these were the seeds that
inspired my career but you see where i
grew up going to college and pursuing a
career
wasn't exactly talked about or heavily
encouraged i'm a first-generation
mexican-american and there weren't a lot
of people i knew pursuing a career in
tech my friends and family were mostly
worrying about graduating high school
and making sure they had jobs not really
thinking about careers
my school didn't have the resources to
offer many technical classes and even
though my father was working in
mechanical engineering computers were a
tool to him like a mill ruler or a
hammer
my parents encouraged me to work hard
and pursue computers but they couldn't
really give advice about college or a
career in tech to no real fault of their
own they just didn't have the necessary
experience when i decided to go to
college i decided to try my hand at
computer science since it could feed my
curiosity for how computers worked at a
more fundamental level i realized that
having this foundational knowledge
really allowed me to understand some of
the higher level concepts that were
important in a career in tech so while
in school i took on my first it job for
a local small company i've been working
in it now for 12 years with the last
seven years being here at google i now
work on managing deployments of large
internal i.t projects for the company
applying the knowledge i picked up over
the years in my initial it help desk
roles to make sure that i understand how
i'm impacting our users and various
support teams now that you know a little
bit about me let's dig into the internet
the internet made it possible for us to
connect with almost anyone in the world
before the internet you had to use paper
maps and write down step step-by-step
directions to get where you wanted to go
if you wanted to see what your friends
were up to you'd have to call them
actually talk to them
if you wanted to learn something new you
had to go to a library and hope they
have a book on the subject you wanted to
learn people didn't really discover new
restaurants unless they heard about it
from someone else or it was advertised
there was no yelp or other website that
rates restaurants like we have today for
some of us life without the internet
seems unimaginable we get it it's become
an integral part of our lives
in the next few lessons you'll be
learning about what the internet is how
it came to be
and how it has impacted us both in
negative and positive ways
when most people think of the internet
they think of a magical cloud that lets
you access your favorite websites shop
online and view a seemingly endless
stream of cat pictures
but there isn't any magic involved
there's no mysterious entity that grants
us a cat picture on demand
the internet is just an interconnection
of computers around the world like a
giant spider web that brings all of us
together
we call the interconnection of computers
a network
computers in a network can talk to each
other and send data to one another you
can create a simple network with just
two computers
in fact you might already have your own
network at home connecting all of your
home devices let's think on a bigger
scale
what about the computers at your school
or workplace are they in a network
they sure are
all of the computers there are linked
together in a network can we link your
home school and workplace networks
together
we absolutely can your workplace
connects to a bigger network and that
network connects to an even bigger
network and on and on eventually you've
got billions of computers that are
interconnected making up what we call
the internet you like most people
probably access the internet through a
browser like mozilla firefox google
chrome microsoft edge or something else
this is done through the world wide web
but don't make the mistake of thinking
the internet is the world wide web the
internet is the physical connection of
computers and wires around the world the
web is the information on the internet
we use it to access the internet through
a link like www.google.com
the world wide web isn't the only way we
can access the internet your email chat
and file sharing programs are also ways
you can access the internet in the it
field managing building and designing
networks is known as networking
networking is a super important and
large field in it there are specialized
jobs college degree programs and tons of
literature dedicated entirely to
networking if you work in the it field
it's super critical that you understand
the fundamentals of networking so how
does it all work to answer that question
we're going to need a lot more time
fortunately we have a separate course
entirely dedicated to this topic we'll
only cover the high level overview of
networking here the internet is composed
of a massive network of satellites
cellular networks and physical cables
buried underneath the ground we don't
actually connect to the internet
directly instead computers called
servers connect directly to the internet
servers store the websites that we use
like wikipedia google reddit and bbc
these websites serve content the
machines that we use like our mobile
phones laptops video game consoles and
more are called clients clients request
the content like pictures websites from
the servers clients don't connect
directly to the internet instead they
connect to a network run by an internet
service provider or isp
like centurylink level 3 comcast
telefonica and things like that isps
have already built networks and run all
the necessary physical cabling that
connects millions of computers together
in one network
they also connect to other networks and
other isps
these other networks connect to the
networks of google reddit universities
basically all the other networks in the
world
together they form one giant network of
computers called the internet but how do
the clients know how to get to servers
well how would you send a letter to
someone you'd put your address on the
letter and send it to the address of the
person you're sending the letter to
computers have addresses just like
houses
computers on a network have an
identifier called an ip address an ip
address is composed of digits and
numbers like 100.1.4.3
when we want to access a website like
www.coursera.com
we're actually going to their ip address
like 172.217.6.46
devices that can connect to a network
have another unique identifier called a
mac address
mac addresses are generally permanent
and hard-coded onto a device a sample
mac address can be something like this
when you send or receive data through a
network you need to have both an ip and
a mac address you might be wondering why
we need to have two different numbers to
identify something that's a good
question
think again of the letter analogy we
used before
an ip address is your house address
while the mac address is the name of
this recipient of the letter you want to
make sure your letter gets to the right
location and to the right person a more
simplified example of the letter
delivery would go like this
i'm in new york city and i've got a
letter that i want to send to a friend
mei mei's halfway across the world in
tokyo so our letter will go through lots
of places before it reaches her i put
her name and address on there and i also
put my name and address on there too
when i drop my letter off at the post
office the mail person looks at it he
thinks i don't know how to get to tokyo
from here but there's a truck that's
headed to texas he puts my letter in
that truck at the post office in texas a
male person looks at the letter and says
i don't know how to get to tokyo from
here but we have a truck going to san
francisco she puts my letter in that
truck at the post office in san
francisco yet another male person looks
at my letter he says oh there's a plane
headed to tokyo and puts the letter on
that plane when it finally reaches tokyo
the postman there says oh i know where
may lives and delivers the letter to her
obviously there are many more nuances to
mail delivery than what i described but
this process is similar to how
information gets routed across the
internet one thing to call out is that
data that's sent through a network is
sent through packets they're little bits
of data and you guessed it ones and
zeros it doesn't matter if it's pictures
email music or text when we move data
through the network we break them down
into packets
when a packet gets to its destination it
will rearrange itself back in order
think of a packet like a letter let's
actually look at this process again but
this time we'll use ip addresses and mac
addresses natalie has a computer with ip
address 113.8.81.2
and she wants to go to google.com and
search for pictures of cats before she
does that her computer has to send a
packet to askgoogle.com if it can access
their website our packet knows
google.com's ip address is 172.217.6.46
but it doesn't know how to get there
just yet the packet travels from one
place to another at each destination
where it asks hey do you know where
google.com is
eventually it'll be routed to another
destination that can get the packet
closer and closer to google.com
once it reaches a destination that can
deliver the packet to a server at
google.com google will send natalie a
packet saying she can access an
unlimited number of cat pictures there
are many technical details that we left
out in this explanation but don't worry
you'll learn all about the nitty-gritty
in the networking course of this program
for now this is what you need to know
about the not so magic of the internet
now that we understand what networks are
let's talk about how they're connected
there are a lot of ways you can connect
computers to a network we'll only cover
a few of the major ones in this course
first there is an ethernet cable which
lets you physically connect to the
network through a cable on the back of
the desktop we worked in the previous
lessons there's a network port that you
plug your ethernet cable into another
way to connect to a network is through
wi-fi which is wireless networking most
modern computing systems have wireless
capabilities like mobile phones smart
televisions and laptops we connect to
wireless networks through radios and
antennas the last method we'll go over
uses fiber optic cables to connect to a
network this is the most expensive
method since fiber optic cables allow
greater speeds than all the other
methods fiber optic gets its name
because the cables contain glass fibers
that move data through light instead of
electricity
this means that we send ones and zeros
through a beam of light instead of an
electrical current through a copper wire
how cool is that but our cables have to
connect to something we don't just have
millions of cables going in and out of
computers to connect them together
instead computers connect to a few
different devices that help organize our
network together the first device that
your computer connects to is a router a
router connects lots of different
devices together and helps route network
traffic let's say we have four computers
a b
c and d
connected together through a router in
the same network
you want to send a file from computer a
to computer b
our packets go through the router and
the router utilizes network protocols to
help determine where to send the packet
we'll cover network protocols in the
next video for now just know that our
router uses a set of rules to figure out
where to send our data
so now our packet gets routed from
computer a to computer b
sweet
what if we wanted to send a packet to a
computer not in our network
what if we wanted to send a packet to
our friend alejandro's computer
alejandro is on a different network
altogether
fortunately our router knows how to
handle that too the packet will get
routed outside our network to our isps
network
using networking protocols it's able to
figure out where alejandro's computer is
during this process our packet is
traveling across many different routers
switches and hubs switches and hubs are
also devices that help our data travel
think of switches like mail rooms in a
building routers get our letters to the
building but once we're inside we use
the mailroom to figure out where to send
a letter hubs are like company memos
they don't know who to send the memo to
so they send it to everyone working with
network devices is important to
understand because it's likely that one
day you'll have users reporting problems
accessing the internet you'll want to
investigate your way up the network
stack a technology stack in this case a
network stack is just a set of hardware
or software that provides the
infrastructure for a computer so the
network stack is all the components that
makes up computer networking you might
need to investigate the network stack in
your job you'd start with making sure
the end user computers are working
properly then you turn your attention to
other possible points of failure like
the cabling switches and routers that
work together to access the internet
we'll dive a little deeper into the
different networking devices in the
networking course for now let's route
ourselves to the next lesson the
language of the internet
we talk briefly about the networking
protocols our devices use to help our
packets get from one destination to
another destination but what are they
there are lots and lots of network
protocols used and they're all necessary
to help us get our packets in the right
place think of network protocols like a
set of rules for how we transfer data in
a network imagine if you sent a letter
to your friend sasha who lives in
california but your post office sends it
out to another sasha who lives out in
new york that would hopefully never
happen since the post office has rules
that they follow to make sure your
letter is sent to the correct address
our networking protocols do the same
thing there are rules that make sure our
packets are routed efficiently aren't
corrupted are secure
go to the right machine and are named
appropriately you get the idea we'll
cover specific network protocols later
on but there are two protocols that you
need to know
the transmission control protocol and
the internet protocol or tcp for short
which have become the predominant
protocols of the internet the internet
protocol or ip is responsible for
delivering our packets to the right
computers
remember those addresses that computers
use to find something on a network
they're called ip addresses or internet
protocol addresses the internet protocol
helps us route information the
transmission control protocol or tcp
is a protocol that handles reliable
delivery of information from one network
to another
this protocol was an important part of
the creation of the internet since it
let us share information with other
computers we'll spend a lot of time
diving into these protocols in the next
course the bits and bytes of computer
networking so stay tuned
for now you've got a high level
understanding of how the internet works
with tcp ip
lots of different ways to use the
internet we all know that but i want to
cover one of the more prevalent ways
that people access the internet through
the web
all websites can be accessed through the
web
websites are basically text documents
that we format with html or hypertext
markup language it's a coding language
used by web browsers
web pages are generally made up of very
basic components they contain multimedia
content like text images audio and video
when you want to navigate to a website
you would type in a url like
www.reddit.com
a url which stands for uniform resource
locator
is just a web address similar to a home
address notice the www in the url it
stands for world wide web the second
portion reddit.com is something we call
a domain name anyone can register a
domain name it's just our website name
once a name is taken it'll be registered
to icann the internet corporation for
assigned names and numbers once a domain
name is registered with icann no one
else can take that name unless it
becomes available again the last part of
the url in this case is
com but you can also use different
domain endings like reddit.net or
reddit.org
the different domain name endings are
standards for what type of website it
might be so a domain that ends in edu is
mainly used for educational institutions
remember how computers use ip addresses
to find another computer well you can do
the same if you wanted to find a
computer on the internet let's go ahead
and type 172.217.6.46
into a web browser and hit enter
wait a minute what happened
how come we're at google's homepage it
turns out the ip address 172.217.
maps to google's homepage through a
critical web protocol domain name system
or dns dns
acts like our internet's directory and
lets us use human readable words to map
to an ip address the computer doesn't
know what google.com is
it only knows how to get to an ip
address with dns it's able to map
google's ip address with google.com
every time you go on a website your
computer is performing a dns lookup to
find the ip address of the website name
you typed in
this trick can be a good first step in
diagnosing certain kinds of dns issues
so if you're able to access
a website by its ip address but not its
human readable domain name then there's
a good bet that there's probably a
problem somewhere in the dns
configuration your network is using
understanding ip addresses can come in
handy in all sorts of other situations
you might encounter as an it support
specialist the source of internet
requests are usually identified by ip
addresses in server logs
many pieces of it infrastructure need to
have some kind of ip address
configuration applied to them in order
to work
dns is a huge system and we'll be
discussing more about it later now that
you understand the basics of how the
internet works i'll sign off for now and
leave you in the very capable hands of
my friend and colleague gian specusa
i'll see you again in course two the
bits and bytes of computer networking
but in the next lessons jion is going to
talk about the incredible boom of the
internet age
you've learned what the internet is and
a little bit about how it works now
we're going to take a step back and
learn why it was created but before we
do that i'd like to introduce myself my
name is gian spacuza and i'm a program
manager in android security i help
protect android's two billion plus users
by managing new security features for
each of android's desserts or versions
of android i've always loved technology
and i worked in it since i was 16 and
throughout university i would fill my
past time reading about new tech and
building servers from old computer parts
in my basement my earliest memory of
working on tech is waiting for my
parents to go to sleep so i could
quietly dial up the internet while the
phone was free and just browse websites
all night long and read about random
tech things
my first jobs were as a one-person id
crew at three non-profit organizations
it was both stressful and really
exciting to be responsible for
everything from configuring and
administrating backup servers to just
showing new employees how to access
email and use their computers
i'm really excited to be here with you i
was never a really great test taker and
my grades reflected that but i knew with
hard work and perseverance i could build
a great career in it and so can you so
let's get started and dig in a bit more
on the internet
the internet has become an essential
part of our lives our bank accounts
entertainment news and education are all
on the internet it's important to learn
why that is since some of the original
designs of the internet have reached
their limitations as an i.t support
specialist you should understand what
the future of the internet holds and why
let's go back in time to the 1950s where
it all started remember back then
computers were huge and bulky if you
were a programmer you needed to directly
interact with these massive computers
that would get real old real fast
especially if you had several people who
wanted to use the only computing
resource available
in the late 1960s the us government spun
up a project called darpa it went on to
create the earliest version of the
internet that we see today with the
arpanet
eventually computer programmers were
able to share a single computing
resource by being able to remotely
access the computer but there was still
a big problem networks couldn't talk to
each other it wasn't until the 1970s
that we had a critical breakthrough in
computer networking that fixed this
problem
it was thanks to computer scientists
vinton cerf and bob khan who created the
method we call the transmission control
protocol and the internet protocol or
tcp ip first only a handful of computers
in universities governments and
businesses adopt tcpip then hundreds and
then in the span of 50 years billions of
computers
tcpip is the protocol that we use on the
internet today
finally people around the world could
send data to one another but they were
still a problem the information they
sent was just text it wasn't centralized
and it was pretty bland
then in the 1990s a computer scientist
by the name of tim burns lee invented
the world wide web it utilized different
protocols for displaying information in
web pages and became the predominant way
of communication and accessing the
internet
anyone who had an internet connection at
that time was able to access the
information source of the world wide web
it's been 30 years since the creation of
the world wide web we've gone from
sending simple email messages and
viewing basic web pages to having video
chats and instant news updates order
food by books and even cars in a matter
of seconds taking an online course like
this wasn't even possible until recently
the creation of the internet that we
know today was the culmination of
knowledge and engineering from many
brilliant scientists and organizations
if you want to learn more about the
history of the internet check out the
supplemental reading and the networking
course in this program
we've mentioned ip addresses a lot in
this course but we haven't actually gone
into detail about them they're actually
different versions of ip addresses the
current protocol internet protocol
version 4 or ipv4 is an address that
consists of 32 bits
separated into four groups
remember 42 bits is 4 bytes and one byte
can be stored up to 256 values from 0 to
255.
so ipv4 addresses can be something like
73.55.242.3
even though it might seem like a lot of
possible ipv4 addresses there are less
than 4.3 billion ipv4 addresses there
are way more than 4.3 billion websites
out on the web today some ipv4 addresses
are even reserved for special purposes
so the number of usable ip addresses is
even less a device that wants to connect
to the internet needs to have an ip
address but devices around the world
have already exceeded those numbers so
where have we been getting ip addresses
ip addresses have been able to keep up
with the amount of devices in the world
thanks to ipv6 or internet protocol
version 6 addresses ipv6 addresses
consist of 128 bits 4 times the amount
that ipv4 uses which means way more
devices can have ip addresses the
adoption of ipv6 addresses has been slow
but steady
eventually you'll start seeing more and
more ipv6 addresses in the wild an
example ipv4 address can be something
like 172.14.24.1
but an ipv6 address can be something
like what you see here
quite a bit of a difference don't you
think
here's an analogy for how big this
difference is between ipv4 and ipv6
with ipv6 there are two to the 128th
power possible ip addresses 2 to the
128th power is an insanely huge number
so huge that scientists had trouble
describing with words just how big this
number is so here's an analogy think of
a grain of sand
if you scoop up a handful do you know
how many grains you've had in your hand
probably a lot but that's not even close
to the number we're talking about
now take all the grains of sand in the
entire world assuming there are roughly
seven and a half times 10 to the 18th
power grains of sand in the world that
still wouldn't be enough ipv6 addresses
now let's take all the sand from
multiple earths now you're close to what
that number would be it's a crazy large
number
just know that we won't be running out
of ipv6 addresses anytime soon another
mitigation tool that we've been able to
use is nat or network address
translation this lets organizations use
one public ip address and many private
ip addresses within the network think of
nat like a receptionist at a company you
know what number to dial to get to the
company and once you reach the
receptionist he can transfer your call
to one of the private numbers inside the
company now instead of companies using
hundreds of public ip addresses they can
just use one ip address remember the
routers we talked about earlier one task
you might need to perform when you're an
it support specialist is to configure
nat on a router to facilitate
communication between your company's
network and the outside world there are
lots of other limitations that we've had
to deal with you'll learn more about
them in the networking course for now
you should have a general understanding
of why ipv4 is so limiting for us today
and how ipv6 helps solve that problem
there's no doubt that the internet has
made it much easier for us to connect
with our friends and family but it's
also made it easier to connect with
everyone else in the world we're no
longer confined to our local
neighborhoods decades ago if you wanted
to sell something you'd place your goods
in your driveway and put up signs for a
garage sale
the only way someone would see this is
if they drove by your neighborhood and
saw your sign
we got a little more savvy and started
advertising in our local newspaper
we had to pay to list our ad but at
least we were able to reach more people
in our neighborhood
then the internet boom happened and we
could use sites like craigslist to post
an advertisement for free and reach more
people in our city
then we were able to sell the people
outside of our city to cities in other
states
eventually we could sell the people
outside of our own country all thanks to
the internet globalization is the
movement that lets governments
businesses and organizations communicate
and integrate together on an
international scale it's been made
possible by the internet and information
technology
countries can communicate with each
other faster
news happening on the other side of the
world reaches us before we can blink
and global and financial trade have
increased dramatically
globalization has transformed almost
every aspect of human society as we know
it
media and social movements have become
globalized too in 2011 several countries
in the middle east started riots and
protests against their government
regimes known as the arab spring
protests because of outlets like social
media their movement gained worldwide
attention and citizens of many different
countries banded together to take
collective action
social media movements like this have
been going on for years gathering
together people from all over the world
and unifying them under a single cause
the internet has also dramatically
changed the way we consume entertainment
a few years ago if you wanted to watch
something on tv you had to actually sit
in front of your tv right when it aired
or else you'd miss it
then we started recording our shows
first on vhs and then on things like
tivo so we could watch them later
but now we have access to more tv shows
and movies than we can ever watch in our
entire lifetime right at our fingertips
what if you wanted to listen to a new
song by your favorite band
you used to have to wait until they
released their album in a store and you
couldn't just buy one song you had to
buy the entire album on a cd cassette
tape or even a vinyl record back in the
day
if you wanted to get the day's news you
had to wait until the next day when the
newspaper would print it
even then you weren't able to get a
fraction of a fraction of a fraction of
the news you can get on the internet
today
retail stores aren't the only place you
look when you want to buy something
anymore
now you can order food clothes books and
well just about anything on the internet
but you don't just buy stuff off the web
you can even get an education colleges
and universities worldwide are taking
education out of the classroom and
putting it into your homes
online courses are becoming a popular
way for people to get a quality
education at a more convenient location
time and price and it's not just degrees
there's an almost infinite amount of
educational tools available on the
internet
a few years ago all this information on
the internet had to be reached through
your laptop or desktop now more than
ever people are going mobile and can
access all of this information with
their smartphones it's truly an amazing
time to be alive in this technological
age
so the takeaway here is that the only
constant in the field of technology is
change and as an i.t support specialist
you'll have to stay on your toes to keep
up with this dynamic shifting landscape
you may have heard of the phrase
internet of things or iot
this concept is pretty new but already
has a major impact on the future of
computing the concept is fairly simple
basically more and more devices are
being connected to the internet in a
smarter fashion did you know that there
are now smart thermostats instead of
manually programming them when you'll be
out of the house they'll just know when
you leave and turn off the air
conditioning for you and it's not just
your thermostat
many companies out there are making
smarter household devices there are
fridges that can keep track of what
foods you have in there toasters that
can be controlled by your smartphone
lights that can change depending on your
mood and cars that drive you instead of
you driving them the world is moving
towards connecting manual devices to the
internet and making them smarter
these decisions have many societal
implications though especially when it
comes to cyber security or personal
privacy but there's also a huge
potential for iot to completely
transform the world in ways we have yet
to see
in the future people may be shocked to
learn that we had to do manual things
like make our own coffee or drive to the
grocery store
while you may not experience working
with an internet of things device you
should be aware that it'll become a
large part of the future of computing
the added convenience made possible by
the internet also makes it harder and
harder for us to maintain anonymity when
you purchase something online your
buying habits can be logged and you may
be targeting with marketing even when
you want to do something simple like
book a dinner reservation your name
phone number email and maybe even a
credit card number are required now
think about the information you post
publicly
name pictures family friends and even
your location may be available to anyone
online be aware of what you're sharing
by reviewing the privacy policy of a
service before you use it it's up to you
to decide if the trade-offs of a service
are worth sharing your personal
information in most cases companies are
trying to build great products that make
our lives easier they may offer their
products for free because you provide
them with free data
just make sure your information won't
fall into the wrong hands privacy
doesn't just affect us on a personal
scale it's also become a concern for
governments in europe data regulation
and privacy are strictly protected to
help eu citizens gain more control over
their personal information
copa or the children's online privacy
protection act also regulates the
information we show to children under
the age of 13. there are many more
examples of government regulation of
privacy it's no longer something we can
think of on an individual scale another
concern that's grown with the rise of
the internet is the issue of copyright
imagine you create a beautiful graphic
and upload it on the web for your
friends to see then some random stranger
takes your graphic claims it as their
own and sells it for profit
thankfully several companies have been
founded and designed specifically to
help solve this issue of copyright and
intellectual property theft there are
also efforts in place that you've
learned about like open source projects
that benefit from being on the internet
in these cases open collaboration allows
a project to thrive on top of privacy
and copyright considerations computer
security is another issue that you may
face in both your personal and
professional life
more and more companies are being
targeted in cyber security attacks for
example the wannacry attack that started
in europe infected hundreds of thousands
of computers across the world the
financial loss of that attack has been
estimated at over a billion dollars
hospital computers were even infected in
a critical life-threatening moment every
second matters not being able to perform
basic medical duties like pulling
medical records took time away from
doctors and nurses and more importantly
the lives of their patients before the
wannacry attack there were lots of other
worldwide attacks in 2011 the sony
playstation network was attacked and
around 77 million user accounts had
personal information exposed everything
from entire governments to businesses
that handle the data of millions of
people have been compromised computer
security is no longer the job of
specialized security engineers it's
everyone's responsibility and as an i.t
support specialist you'll need to have a
fundamental understanding of computer
security
you'll get to learn these fundamentals
in the course i.t security defense
against the digital dark arts which i'll
be teaching you i spend every day
working in security i love working in
the field because i get to help protect
people and their devices from all over
the globe the security course in this
program teaches you just that you'll
also learn what threats are out there
and how you can prevent and mitigate
them and how to secure your workplace
congratulations on finishing this lesson
from the google it support certificate
access the full experience including job
search help and get the official
certificate by clicking the icon or the
link in the description
watch the next lesson in the course by
clicking here and subscribe to our
channel for more lessons from upcoming
google career certificates