APPLICATION


PENGERTIAN
NAME SYSTEM
DNS
 ð Translates domain names,such as cisco.com, into IP   addresses

HOST CONFIG
BOOTP
 ð  Enables a diskless workstation to discover its own IP address,the IP address of a BOOTP server on the network,and a file to be loaded into memory to boot the machine

 ð  BOOTP is being superseded by DHCP
DHCP
 ð  Dynamically assigns IP addresses to client stations at start-up

 ð  Allows the addresses to be re-used when no longer needed

EMAIL
SMTP 
 ð  Enables client to send email to a mail server
 ð  Enables servers to send email to other servers
POP      
 ð  Enables clients to retrieve email from a mail server
 ð  Downloads email from the mail server to the dekstop
IMAP
 ð  Enables clients to access email stored on a mail server
 ð  Maintais email on the server

FILE TRANSFER
FTP
 ð  Sets rules that enable a user on one host to access and transfer files to and from another host over a network
 ð  A reliable,connection-oriented,and acknowledged file delivery protocol
TFTP
 ð  Asimple,connentionless file transfer protocol
 ð  A best-effort,unacknowledged file delivery protocol
 ð  Utilizes less overhead than FTP

WEB
HTTP
 ð  Set of rules for exchanging text,graphic images,sound,video,and other multimedia files on the world wide web

TRANSPORT

UDP
 ð  Enablea a process running on one host to send packets to a process running on another host
 ð  Does not confirm successful datagram transmission
TCP
 ð  Enables reliable communication between processes running on separate hosts
 ð  Reliable,acknowledged transmissions that confirm successful delivery
INTERNET
IPV4
NAT
 ð  Translates IP addresses from a private network into globally unique public IP addresses

IP SUPPORT
ICMP
 ð  Provides feedback from a destination host to a source host about errors in packet delivery

ROUTING PROTOCOLS
RIP
 ð  Distance vectir routing protocol
 ð  Metric based on hop count
 ð  Version 2 Supports VLSM and CIDR
OSPF
 ð  Link State routing protocol
 ð  Hierarchical design based on areas
 ð  Open standard interior routing protocol
EIGRP
 ð  Cisco Proprietary Routing Protocol
 ð  Uses Composite metric based on bandwidth,delay,load,reliability and MTU
BGP 
 ð  BGP4 latest version
 ð  External Routing used between Autonomous Systems

NETWORK ACCESS
ARP
 ð  Provides dynamic address mapping between an IP address and a hardware address
PPP
 ð  Provides a means of encapsulating packets for transmission over a serial link
ETHERNET
 ð  Defines the rules for wiring and signalling standards of the Network Access Layer
INTERFACE DRIVERS
 ð  Provides intruction to a mavhine for the control of a specific on a network device