Chapter 3 - Introduction to TCP/IP Flashcards
Describe how a network works Describe the purpose and basic operation of the protocols in the OSI and TCP models. Identify and correct common network problems at Layers 1, 2, 3 and 7 using a layered model approach Implement an IP addressing scheme and IP Service to meet network requirements in a medium-size Enterprise branch office network. Describe the operation and benefits of using private and public IP addressing.
Process Application Layer
the DoD’s equivalent to the OSIs top three layers (Application, Presentation, Session).
Defines protocols for node-to-node application communication and also controls user-interface specifications.
Host-to-Host
Equivalent to the Transport Layer.
Defines protocols for setting up the level of transmission service for applications.
Creates reliable end-to-end communication
Ensures error-free delivery of data.
Handles packet sequencing and maintains data integrity.
Internet Layer
Corresponds to the Network Layer.
Designates the protocols related to the logical transmission of packets over the entire network.
Takes care of the addressing of hosts by giving them an IP address.
Handles the routing of packets among multiple networks.
Network Access Layer
Equivalent to the Data Link and Physical Layers of the OSI.
Implements data exchange between the host and the network.
Protocols in the Process/Application Layer
8 Total Telnet FTP LPD SNMP TFTP SMTP NFS XWindow
Protocols in the Host-to-Host Layer
TCP
UDP
Protocols in the Internet Layer
4 Total
ICMP
ARP
RARP
IP
Protocols in the Network Access Layer
4 Total Ethernet Fast Ethernet Token Ring FIDDI
Telnet
Application/Process Layer:
Deals with terminal emulation.
Allows a user on a remote client machine, called a Telnet client, to access the resources of another machine, the Telnet server.
File Transfer Protocol
FTP
Application/Process Layer:
Allows for file transfers between any two machines using it.
Allows for access to both directories and files.
Can accomplish certain directory operations such as relocating into different ones.
No authentication
A protocol and a program.
Protocol: Used by applications.
Program: Used by users to perform file tasks by hand.
Trivial File Transfer Protocol
Application/Process Layer:
Unlike FTP:
No directory-browsing abilities. can do nothing but send and receive files.
Sends smaller blocks of data than FTP making it faster.
No authentication.
Network File System
NFS
Application/Process Layer:
Specializes in file sharing.
Allows two different types of file systems to interoperate.
Simple Mail Transfer Protocol (SMTP)
Application/Process Layer:
Used to SEND mail.
Post Office Protocol (POP)
Application/Process Layer:
Used to RECEIVE email
Provides storage facility for incoming email.
Latest version is POP3.
Internet Message Access Protocol (IMAP)
Application/Process Layer:
Gives control on how you download email.
Added security
Can peek at mail or download just a part of it.
