O LEVEL- INTERNET TECHNOLOGY & WEB DESIGN

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O LEVEL-PAPER 2nd -- M2-R4 :


INTERNET TECHNOLOGY & WEB DESIGN




THESE ARE THE QUESTIONS WHICH FREQUENTLY ASKED IN 

  LAST 10 YEARS -----


EXPLAIN DNS AND DHCP IN BRIEF--

dns,dhcp
DNS AND DHCP



Definition of DNS


DNS (Domain Name System) is a mechanism which provides directory lookup service which maps the name of a host on the Internet and its unique numerical address (logical address).




Definition of DHCP

DHCP (Dynamic Host Configuration Protocol) has been concocted to impart static and dynamic address allocation to the hosts connected in the network. It includes information such as IP address and subnet mask of the computer, IP address of the router and IP address of the name server.




BASIS FOR COMPARISON
DNS
DHCP
Basic
It is an address resolving mechanism.
It is a protocol used for assigning IP's to the host in a local area network statically or dynamically.
Features
Coverts symbolic names into IP address and vice-versa.
Provide additional information such as IP addresses of the host, router and name server and Subnet mask of the computer.
Used for locating active directory domain servers.
Assigns IP to host for a particular lease time.
Port number used
53
67 and 68
Related protocols
UDP and TCP
UDP
Server
DNS server translates the Domain name to the IP and vice-versa.
DHCP server configures the hosts automatically.
Working methodology
Decentralized
Centralized
Advantage
Eliminate the need to remember the IP address; instead, the domain name is used for the web address.
Reliable IP address configuration and reduced network administrati

Quick revision of all o level exam and practical with solved c language last 10 years paper book released  at now on amzon buy now this book...


This book is the fourth edition of the series of 'O' level exams.

This book covers all the 'O' level exam with C language Practical i.e --

M1-R4: IT TOOLS & BUSINESS SYSTEMS
M2-R4: INTERNET TECHNOLOGY AND WEB DESIGN
M3- R4: C LANGUAGE
M4-R4: ICT RESOURCE
C Programs and Practical Question - (Hands Written Notes Of Previous Year Solved paper )

This book is made of most Important topic with complete details that has been asked in 'O' level Exam at the last 10 years. After reading this book you will not need to read any other books.

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