Cisco discovery d homesb module 6 - v.4 in english.
Ccna1v3 mod11
1. CCNA 1 v3.0 Module 11
TCP/IP Transport and
Application Layers
2. 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.
3. 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!
6. 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
8. 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
9. Session Establishment
One function of the
transport layer is to
establish a connection-
oriented session
between similar
devices at the
application layer.
10. 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.
12. 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
13. Window Size
TCP window sizes are variable during
the lifetime of a connection.
Larger window sizes increase
communication efficiency.
14. 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.
16. Transmission Control Protocol
(TCP)
The protocols that use TCP include:
FTP (File Transfer Protocol)
HTTP (Hypertext Transfer Protocol)
SMTP (Simple Mail Transfer Protocol)
Telnet
18. 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)
20. 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.
24. 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
25. Application Layer Examples
Domain Name System
File Transfer Protocol
Hypertext Transfer Protocol
Simple Mail Transport Protocol
Simple Network Management Protocol
Telnet
26. 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
27. 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.
30. SNMP
The Simple Network Management Protocol (SNMP) is an
application layer protocol that facilitates the exchange of
management information between network devices.
31. 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.
