|1||IPv4 (Internet Protocol Version 4) is the fourth revision of the Internet Protocol||IPv6 is the successor to Internet Protocol Version 4 (IPv4).|
|2||32-bit numeric address written in decimal as four numbers separated by periods. Each number can be zero to 255.Example, 192.168.1.10||IPv6 addresses are 128-bit IP address written in hexadecimal and separated by colons.Example 3ffe:1900:4545:3:200:f8ff:fe21:67cf|
|3||Manual configuration (Static) of IP addresses or DHCP (Dynamic configuration) is required to configure IP addresses.||Auto-configuration of addresses is available.|
|4||Deployed in 1981||Deployed in 1999|
|5||The number of header field 12||The number of header field 8|
|6||Checksum field, used to measure error in the header, required||Checksum field eliminated from header as error in the IP header are not very crucial|
|7||Internet Protocol Security (IPSec) with respect to network security is optional||Internet Protocol Security (IPSec) with respect to network security is mandatory|
|8||The fragmentation is done both by sending host and routers||The fragmentation is done both by sending host. Pv6 simplified the router’s task compared to IPv4.|
|9||Clients have to approach Dynamic Host Configuration Server (DHCS) whenever they connect to a network.||Clients do not have to approach any such server as they are given permanent addresses.|
|10||IPv6 is less compatible to mobile networks||IPv6 is more compatible to mobile networks than IPv4.|
|11||IPv6 allows lesser payloads||IPv6 allows for bigger payloads than what is allowed in IPv4|
|12||IPv4 is in use by 99% networks.||Pv6 is used by less than 1% of the networks,|
|Important Point :
Hubs and switches are all devices that let you connect one or more computers to other computers, networked devices, or even other networks. Each has two or more connectors called ports into which you plug in the cables to make the connection. Varying degrees of magic happen inside the device and therein lies the difference. I often see the terms misused, so let’s clarify what each one really means.
A hub is typically the least expensive, least intelligent, and least complicated of the three. Its job is very simple – anything that comes in one port is sent out to the others.
If a message† comes in for computer “A”, that message is sent out all the other ports, regardless of which one computer “A” is on:
And when computer “A” responds, its response also goes out to every other port on the hub:
Every computer connected to the hub “sees” everything that every other computer on the hub sees. The computers themselves decide if they are the targeted recipient of the message and when a message should be paid attention to or not.
The hub itself is blissfully ignorant of the data being transmitted. For years, simple hubs have been quick and easy ways to connect computers in small networks.
A switch does essentially what a hub does, but more efficiently. By paying attention to the traffic that comes across it, it can “learn” where particular addresses are.
Initially, a switch knows nothing and simply sends on incoming messages to all ports:
Even accepting that first message, however, the switch has learned something – it knows on which connection the sender of the message is located. Thus, when machine “A” responds to the message, the switches only need to send that message out to the one connection:
In addition to sending the response through to the originator, the switch has now learned something else – it now knows on which connection machine “A” is located.
That means that subsequent messages destined for machine “A” need only be sent to that one port:
Switches learn the location of the devices that they are connected to almost instantaneously. The net result is that most network traffic only goes where it needs to rather than to every port. On busy networks, this can make the network significantly faster.
Welcome , this is the blogging site for the Laureate employees and students.
What is a “blog”?
“Blog” is an abbreviated version of “weblog,” which is a term used to describe web sites that maintain an ongoing chronicle of information. A blog features diary-type commentary and links to articles on other Web sites, usually presented as a list of entries in reverse chronological order. Blogs range from the personal to the political, and can focus on one narrow subject or a whole range of subjects.
Many blogs focus on a particular topic, such as web design, home staging, sports, or mobile technology. Some are more eclectic, presenting links to all types of other sites. And others are more like personal journals, presenting the author’s daily life and thoughts.
‘A frequent, chronological publication of personal thoughts and Web links.’
‘A blog is basically a journal that is available on the web. The activity of updating a blog is “blogging” and someone who keeps a blog is a “blogger.”‘
‘A blog is a website in which items are posted on a regular basis and displayed in reverse chronological order. The term blog is a shortened form of weblog or web log. Authoring a blog, maintaining a blog or adding an article to an existing blog is called “blogging”. Individual articles on a blog are called “blog posts,” “posts” or “entries”. A person who posts these entries is called a “blogger”. A blog comprises text, hypertext, images, and links (to other web pages and to video, audio and other files).’
For Laureate Institute
‘Blogging Provide the open diary to all the teachers , Students and their Parents which increase the effectiveness and credibility of education.’
Importance of blogging
1 Knowledge sharing at Any Time and Any Where
2. Time Saving
3. Free to discuss at Any Time
4. Make more Tech Savvy
5. Open To All
6. Discuss World Wide
7. Helps in Learning
8. Increase social Network
9. Make yourself Up to Date
10. Cope with e-world