Ccna1v3 mod11

CCNA 1 v3.0 Module 11
TCP/IP Transport and
Application Layers

Purpose of This PowerPoint
This PowerPoint primarily consists of the Target
Indicators (TIs) of this module in CCNA version 3.0.
It was created to give instructors a PowerPoint to
take and modify as their own.
This PowerPoint is:
 NOT a study guide for the module final

assessment.
 NOT a study guide for the CCNA certification

exam.
Please report any mistakes you find in this
PowerPoint by using the Academy Connection Help
link.

To Locate Instructional Resource
Materials on Academy Connection:

Go to the Community FTP Center to locate
materials created by the instructor community
Go to the Tools section
Go to the Alpha Preview section
Go to the Community link under Resources
See the resources available on the Class
home page for classes you are offering
Search http://www.cisco.com
Contact your parent academy!

Objectives
TCP/IP Transport Layer
TCP/IP Application Layer

Introduction to Transport
Layer
Five basic services:
 Segmenting upper-layer application

data
 Establishing end-to-end operations

 Transporting segments from one end

host to another end host
 Ensuring data reliability

 Providing flow control

Flow Control
Avoids the problem of a host at one side of
the connection overflowing the buffers in the
host at the other side
Ensures the integrity of the data

Session Establishment
One function of the
transport layer is to
establish a connection-
oriented session
between similar
devices at the
application layer.

Session Maintenance and
Termination
Congestion can occur
during data transfer
To terminate, the
sending host sends a
signal that indicates the
end of the
transmission, which is
acknowledged by the
receiver.

Windowing
A method of controlling the amount of
information transferred end to end
Information can be measured in terms
of the number of packets or the number
of bytes

Window Size
TCP window sizes are variable during
the lifetime of a connection.
Larger window sizes increase
communication efficiency.

Acknowledgment
Positive acknowledgment requires a
recipient to communicate with the
source, sending back an
acknowledgment message when it
receives data.
Sender keeps a record of each data
packet that it sends and expects an
acknowledgment.

TCP Sequence and
Acknowledgment

Transmission Control Protocol
(TCP)
The protocols that use TCP include:
 FTP (File Transfer Protocol)

 HTTP (Hypertext Transfer Protocol)

 SMTP (Simple Mail Transfer Protocol)

 Telnet

UDP
The protocols that use UDP include:
 TFTP (Trivial File Transfer Protocol)
 SNMP (Simple Network Management
Protocol)
 DHCP (Dynamic Host Control Protocol)
 DNS (Domain Name System)

TCP and UDP Port Numbers
Both TCP and UDP use port (socket)
numbers to pass information to the
upper layers.
 Numbers below 1024 are considered
well-known ports numbers.
 Numbers above 1024 are dynamically

assigned ports numbers.
 Registered port numbers are those

registered for vendor-specific
applications. Most of these are above
1024.

Introduction to Application
Layer

Responsibilities of Application
Layer
Identifying and establishing the
availability of intended communication
partners
Synchronizing cooperating applications
Establishing agreement on procedures
for error recovery
Controlling data integrity

Application Layer Examples
Domain Name System
File Transfer Protocol
Hypertext Transfer Protocol
Simple Mail Transport Protocol
Simple Network Management Protocol
Telnet

DNS
The Domain Name System (DNS) is a system
used for translating names of domains into IP
addresses.
There are more than 200 top-level domains on
the Internet, examples of which include the
following:

.us – United States .gov – government sites
.uk – United Kingdom .org – non-profit sites
.edu – educational sites .net – network service
.com – commercial sites

FTP and TFTP
FTP is a reliable, connection-oriented
service that uses TCP to transfer files
between systems that support FTP.
TFTP is a connectionless service that
uses User Datagram Protocol (UDP).
 TFTP is used on routers to transfer
configuration files and Cisco IOS images.
 TFTP is designed to be small and easy to
implement.

SMTP
E-mail servers communicate with each other
using the Simple Mail Transport Protocol
(SMTP) to send and receive mail.

SNMP
The Simple Network Management Protocol (SNMP) is an
application layer protocol that facilitates the exchange of
management information between network devices.

Telnet
Telnet client software provides the ability to log
in to a remote Internet host that is running a
Telnet server application and then to execute
commands from the command line.

Ccna1v3 mod11

More Related Content

What's hot (20)

Viewers also liked (19)

Similar to Ccna1v3 mod11 (20)

More from igede tirtanata (13)

Ccna1v3 mod11