Computech Planet

UP Board Result 2020

UP Board 10th Result 2020

As per latest update UP High School Result 2020 will be release by 1st June 2020. Students who appeared UP Board Class 10th exams this year will be able to check there result by the first week of June 2020. This is confirmed by deputy chief Minister of Uttar Pradesh Dinesh Sinha. Students can check their result on official website https://results.upmsp.edu.in .

Uttar Pradesh Madhyamik Shiksha Parishad

Class B Subnetting

What is Subnetting ?

Subnetting is the process of borrowing bits from host bits. In any network we can not use all IP address for hots address. We lose 2 address for every subnet.
one IP is reserved for network address and one IP reserved for broadcast address for all host in the network..

Example: Lets take a Class B IP address 172.50.10.0/17
There are 6 main things to consider subnetting.

CIDR Value/Subnet Mask
No of Subnets
No of Hosts per Subnet
Range
Network Address and Broadcast Address
Valid Range

Network Address of given IP is 172.50.0.0 because in class B, 2 octet are reserved for network and 2 octet reserved for host address.
1- CIDR =17 means subnet mask
11111111.11111111.10000000.00000000
255. 255. 128. 0

2-No of Subnets
No of subnets=2^no of subnetted bits
In our case subnetted bit is 1 so No of subnets are 2^1=2 sub network

3-No of Host per subnet
No of hosts per subnet=2^no of host bits ( No of zeros)
in our case 2^7 x 2^8=2^15
here 7 bits in 3rd octet and 8 bits in 4th octet

4-Range
We have 2 subnet so first subnet will start from 172.50.0.0 and end at 172.50.127.255 because( in 3rd octet 2^7 and 4th octet 2^8) there are 2^15 hosts in a subnet. so
1st range
172.50.0.0 to 172.50.127.255

2nd range
172.50.128.0 to 172.255.255

For 1st Range
Network address :172.50.0.0
Broadcast address: 172.50.127.255
valid IP: 172.50.0.1 to 172.50.127.254

For 2nd Range
Network address :172.50.128.0
Broadcast address: 172.50.255.255
valid IP: 172.50.128.1 to 172.50.255.254

Class C Subnetting

Subnetting of class C :

Given IPv4 address : 192.168.50.112/25
Subnet mask : 255.255.255.128 (10000000)

128 64 32 16 8 4 2 1

192.168.50 .01110000
255.255.255.10000000 AND Operation
192.168.50 .00000000

1- Network Id = 192.168.50.0
Magic Number is 128 (last bit value which is used in Subnet )
2-Total no of host per subnet = 2^7 =128
3-Total no of subnet= 2^1 =2
4-Total No of usable host =2^7-2=126
5- 1st subnet 192.168.50.0

1st IP address : 192.168.50.1
Last IP address :192.168.50.126

6- 2nd subnet 192.168.50.128

1st IP address :192.168.50.129
Last IP address :192.168.50.255

OSI Model

OSI model stands for OPEN SOURCE INTERCONNECTION . It was developed by ISO ( INTERNATIONAL STANDARD ORGANIZATION) in the year 1984. OSI model defines network communication and interconnection. OSI model also called reference model. It has 7 Layers but we cant say which one is first layer and which is last layer. It depends upon sender and receiver.
These 7 Layers of OSI model are:

APPLICATION LAYER
PRESENTATION LAYER
SESSION LAYER
TRANSPORT LAYER
NETWORK LAYER
DATA LINK LAYER
PHYSICAL LAYER

OSI Model Design

APPLICATION LAYER :- Application Layer directly interacts data from the user. On the sender side it receive the data from user and receiver side it display data to the receiver. Software applications like MS Office, Web Browsers, Email ets, works on Application Layer.
PRESENTATION LAYER :- Presentation Layer is responsible for data translation. The data received from Application Layer is extracted here and manipulate as per required format to transmit over the Network Layer. On the sender side data encrypted into another form i.e code and receiver side it decrypted .
SESSION LAYER :- Session Layer establish the connection between sender and receiver until data transmission. The time between the communication is open and closed is known as session. When the data transmitted successfully, connection disconnect automatically.
TRANSPORT LAYER :- Transport Layer takes the data from session layer and brakes into segments before sending it to next layer. Transport Layer segments and reassemble the data. On sender side it brakes into segments and receiver side it reassemble the segments.
NETWORK LAYER :- In the Network Layer sender and receiver address are placed in the header .Network Layer takes care of packet routing ie. selection of shortest path to transmit the packet. It defines the root for packet received from transport layer.
DATA LINK LAYER :- The main function of Data Link Layer is make sure data transfer is error free. means error detection and correction. It provides a way for the sender to transmit set of bits that are meaningful to the receiver. It created the frames and adds physical address of sender and receiver on each frame.

PHYSICAL LAYER :- Physical layer responsible for actual connection between devices. It contains the information in the form of bits. It transmit each bit from one node to another node. This layer includes the physical equipment involved in the data transfer such as cables , switches hub ets.

OSI-Model

OSI Model की सभी लेयर्स को याद रखने का बहुत आसान तरीका :

ALL PEOPLE SEEMS TO NEED DATA PROCESSING.

Delete Google Account

How to Delete Google Account ?

The person who want to delete his Google Account can use following steps.

Step 1- Login to Google/Gmail Account.

Google Login

Step 2- After successful login click on Google app icon and click again on google account app

Google App

Step 3- In the google account click on data & personalisation .

Data

Step 4- In Data & personalisation click on delete a service or account. In popup window select the option which you want.

Delete your Account

Step 5- When you click on Delete your account it will again ask for login . Login again.

Google Login

Step 6- After again login it will ask confirmation for delete google account.

Delete Google Account

Step 7- Accept all condition and click on Delete Account button. Now your Google Account will be deleted.

Google Account Deleted

JavaScript to show time on HTML page and change image in HTML page after certain time

How to change images on HTML page after certain time ?
We have 3 Images and we want to change these images on particular Day and Time.

function changeImage()
{
var date=new Date(); // Assign day as a number(1-30)
var today=date.getDay(); //Return week day as a number(0-6)

var h=date.getHours(); //Return Hours (0-23)
var m=date.getMinutes(); //Return Minutes(0-59)
var s=date.getSeconds(); // Return Seconds(0-59)
m=checkTime(m); //check minutes
s=checkTime(s); //check seconds
document.getElementById("time").innerHTML=h+" : "+m+" : "+s; // this show the time on HTML Page
var t=setTimeout(changeImage,1000);

var startTime=new Date(); // Manual set time
startTime.setHours(22);
startTime.setMinutes(23);
startTime.setSeconds(00);

endTime.setSeconds(50); var endTime=new Date(); // Manual set time
endTime.setHours(22);
endTime.setMinutes(23);

var Image=["/image1.jpg","/image2.jpg","/Image3.png"];
if(today>0 && today<6)
{
if(startTime<date && endTime>date)
{
document.getElementById("imgId").src=Image[0];
}
else
{
document.getElementById("imgId").src=Image[1];
}
}
else
{
document.getElementById("imgId").src=Image[2];
}

}
function checkTime(i)
{
if(i<10)
{i="0"+1};
return i;
}

Central Teacher Eligibility Test (CTET) JULY 2020 Online Application Last Date Extended

Candidate willing to appear for CTET July 2020 examination, now they can register by 2 March 2020 and last date of fee submission is 5 March 2020 till 3.30pm. on website i.e. www.ctet.nic.in Earlier CTET July 2020 online application last date was 24 Feb 2020 and fee submission date was 27 Feb 2020.

CTET-Exam

Examination fee

For OBC & General candidate is Rs. 1000 for 1 or 2 & Rs. 1200 for both paper.

For SC/ST/Diff. Abled candidate is Rs. 500 for 1 or 2 & Rs. 600 for both paper.