CCT 183: Practice CISSP Questions for the OSI and TCP/IP Models for the CISSP (Domain 4)

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Unlock the secrets of the OSI and TCP/IP models with Sean Gerber as your guide on the CISSP Cyber Training Podcast. Ever wondered how the presentation layer manages to format and translate data seamlessly for the application layer? Or how the network layer deftly routes packets across networks? Prepare to gain a comprehensive understanding of these essential concepts, crucial for acing the CISSP exam. Plus, dive into the intriguing details of the TCP/IP model's transport layer, from error checking to flow control, all while uncovering the mystery of the SYN flag in the TCP three-way handshake. Equip yourself with vital knowledge that will bolster your cybersecurity expertise.

Our journey doesn't stop there. We delve deeper into the intricacies of the TCP three-way handshake, spotlighting the often-overlooked role of the ACK (Alpha Charlie Kilo) in maintaining reliable communication. Sean shares insightful analysis on how acknowledging data receipt and indicating the next expected sequence number ensures network stability. Looking to expand your cybersecurity knowledge even further? Sean offers exclusive access to additional content and resources through his platforms, inviting you to join his email list for valuable materials. Empower your CISSP exam preparation and cybersecurity understanding with these crucial insights.

Gain exclusive access to 360 FREE CISSP Practice Questions delivered directly to your inbox! Sign up at FreeCISSPQuestions.com and receive 30 expertly crafted practice questions every 15 days for the next 6 months—completely free! Don’t miss this valuable opportunity to strengthen your CISSP exam preparation and boost your chances of certification success. Join now and start your journey toward CISSP mastery today!

Episode Transcript

Speaker 1 (00:00):
Welcome to the CISSP Cyber Training Podcast, where we
provide you the training andtools you need to pass the CISSP
exam the first time.
Hi, my name is Sean Gerber andI'm your host for this
action-packed, informativepodcast.
Join me each week as I providethe information you need to pass
the CISSP exam and grow yourcybersecurity knowledge.

(00:20):
Alright, let's get started.
Let's go.
Cybersecurity knowledge Allright, let's get started.
Hey, this is Sean Gerber withthe CISSP Cyber Training Podcast
.
How are you all doing thisbeautiful day?
And we are going to be talkingabout some fun things as it
relates to the CISSP exam.
So today we're going into thequestion.
So today we're going into thequestion Thursday and it is

(00:45):
going to be focused on domainfour.
So, as we get into domain four,we're going to talk about some
very key questions as it relatesto the OSI model and the TCPIP
model.
So the OSI model, like we'vementioned in the podcast last,
on Monday, was around the sevenlayer burrito and we are going

(01:06):
to get into the various sevenlayers and we're going to ask
some key questions around thoseseven layers so that you can
understand when you go to takeyour, your exam, you understand
what is needed and required forthe test.
So let's get started and seewhat we come up with.
All right, question one what isthe function of the

(01:26):
presentation layer in the OSImodel?
Remember we talked there areseven different layers and
presentation layer is one ofthose that's tied to the OSI
model.
So what is the function of thepresentation layer in the OSI
model A?
It provides reliable end-to-enddelivery of data.
It provides data forpresentation of the application

(01:49):
layer.
It establishes and terminatesconnections between devices and
it routes packets betweennetworks.
So, like we talked about, whenyou deal with presentation, if
there's something in here youdon't know the question about or
don't know the answer to thequestion, make sure you grab and
look at what might be beingasked of you and then maybe
potentially pull out somequestions that you know for sure

(02:11):
that are not correct.
So obviously, if it's apresentation layer, when you're
dealing with data betweendevices, that's probably not the
presentation layer, so youcould throw that one out.
But again, the question is whatis the function of the
presentation layer in the OSImodel?
It provides reliable end-to-enddelivery?
No, it provides data forpresentation Aha Of the

(02:32):
application or up to theapplication layer, possibly.
It establishes, terminatesconnections between devices?
Probably not.
And it routes packets betweennetworks?
No, probably not.
So your answer is B.
The presentation layer isresponsible for formatting and
translating data betweendifferent systems, as well as

(02:54):
encrypting and compressing datafor the transmission.
So the question or the answeris B Okay, so it formats the
data in the presentation to theapplication layer.
So it formats the data in thepresentation to the application
layer.
Question two which layer of theOSI model is responsible for
routing packets between networks?
Okay, the question is whichlayer of the OSI model is

(03:15):
responsible for routing packetsbetween networks?
A physical layer, b data linklayer, c network layer or D
transport layer?
So now you're getting intorouting packets.
So that would probably throw afew things out for you so that
you can maybe narrow it down toa couple that you might have a
question about.
A the physical layer, thatdoesn't deal with routing.

(03:35):
D the data link layer thatdoesn't deal with routing.
The network layer ah, thatwould deal with routing.
And the transport layer thatcould possibly do it, but you've
got to be careful.
Which one would it be?
The answer is C, the networklayer that is responsible for
routing packets between networksusing logical addressing and
routing protocols.

(03:58):
Question three, which TCP IPlayer is responsible for error
checking and flow control?
Okay, so flow control is a keyfactor in the data moving around
through the network.
A, the application layer no,because it's not part of an
application, right, becauseyou're dealing with flow control
.
The transport layer, possibly,the network layer, possibly, or

(04:22):
the physical layer, which weknow isn't going to be the case.
So you could narrow it down toB and C Again.
Which TCP layer is responsiblefor error checking and flow
control?
And the transport layer isresponsible.
That would be B is responsiblefor error checking, flow control
and segmentation of the data.

(04:43):
All right, so then we're goingto talk about the SYNAC aspects
of the TCP connection.
So, as we mentioned, what isthe SYN flag in the TCP
three-way handshake?
So the question is, what is thefunction of the SYN flag in the
TCP three-way handshake?
It acknowledges the data, thereceipt of the data, it requests

(05:06):
the connection to the remotehose, it signals the end of the
data transmission or it resetsthe connection.
So, if you go break that downagain, the SYN flag the SYN flag
is usually what it does is.
That is the beginning part ofthis overall process, and if
that SYN flag is usually what itdoes is that is the beginning
part of this overall process.
And if that SYN flag would notacknowledge the receipt of the

(05:29):
data because it's the beginningof the process, it signals the
end of the transmission, whichis a, c and that's not correct
because it doesn't signal theend of any transmission, and
then it resets the connection.
It doesn't reset, it's thebeginning of the transmission.
So it requests the connectionwith the remote host.
That is answer B Five.

(05:50):
Which TCP IP layer isresponsible for providing
applications with access tonetwork resources?
Okay, so this is the TCP layer.
So remember, focus if they'retalking about the OSI model
versus the TCP IP model, thisone is focused on the TCP layer.
So remember, focus if they'retalking about the OSI model
versus the TCP IP model, thisone is focused on the TCP IP,
which is only four segmentsversus the actual seven of the

(06:14):
seven layer burrito.
So the TCP layer.
Which TCP layer is responsiblefor providing applications with
access to network resources?
A physical layer, b data linklayer is responsible for
providing applications withaccess to network resources.
A Physical Layer, b Data LinkLayer, c Network Layer or D
Application Layer.
Again, focus on what is said inthe question.
It's providing applicationswith access to network resources

(06:37):
, so it's dealing withapplications.
So it's highly likely that theapplication layer is responsible
for providing applications withaccess to network resources and
services, such as email, filesharing and remote login.
Remote login All right.
C which layer of the OSI modelis responsible for identifying

(06:57):
and establishing communicationswith applications on remote
systems?
Okay, so which layer of the OSImodel is responsible for
identifying and establishingcommunications with applications
on remote systems?
B, or I should say presentationlayers.

(07:18):
A, b is the session layer, c isthe transport layer or D is the
application layer.
Again, which layer of the OSImodel is responsible for
identifying and establishingcommunications with applications
on remote systems?
Okay, so, something has toconnect via a remote connection

(07:39):
and it's establishing thatcommunication with these remote
systems.
So if it's establishingsomething, let's go down through
the questions.
A a presentation would notestablish anything.
B the session might do that.
C the transport layer.
That basically takes the datato and from, and then the
application layer is what'sbeing looked at.

(08:02):
So, if you were to break itdown, the session layer is
responsible for identifying andestablishing communications with
applications on remote systems,as well as managing
communication assessments andtheir various connections.
Okay, so let's get into onemore question.

(08:23):
What is the function of the ACKA-C-K flag in the TCP three-way
handshake?
A it acknowledges the receipt ofdata, okay.
B it requests a connection withthe remote host.
C it signals the end of thedata transmission, or D it

(08:44):
resets the connection.
So again, what is the functionof the ACK Alpha Charlie Kilo in
the TCP three-way handshake?
A it acknowledges the receiptof data.
B it requests a connection withthe remote host.
C it signals the end of thedata transmission, or D it

(09:05):
resets the connection.
And the answer is A itacknowledges the receipt of data
.
That is correct.
It is used to acknowledge thereceipt during TCP three-way
handshake, as well as toindicate the next expected
sequence number.
All right, that's all I havefor today.
If you want some access to morequestions, head on over to

(09:26):
cisspcybertradingcom, or you cango to freequestionscom, and
there's gives you access into myenvironment.
At least.
We'll give you a way.
You can sign up for my emaillist and then from there you can
get all kinds of great contentheaded your way.
All right, I hope you have awonderful, wonderful day and
we'll catch you on the flip side, see ya.