Chapter 7 Internet Services (Class 7)

 

CHAPTER 7

Internet Services

 

A. Tick the correct answer and fill in the blank.

1. URL is the unique link of web pages through which you can open the web page.

2. The mouse pointer changes its shape to and when we move it over a Hyperlink.

3. Data stored on a Cloud storage, can be used from any location that has Internet access.

4. One of the popular chat software is Google Hangouts.

5. Pen command is used to scribble on the web page.

B. Fill in the blanks using the given words.

1. Facebook is the most popular social networking website.

2. Cyberbullying is an act of intentionally threatening, humiliating or embarrassing someone over the Internet.

3. A blogger is someone who writes content for a blog.

4. Hub icon is on the address bar of the browser.

5. Every time a web crawler visits a web page, it makes a copy of it and adds its URL to an index.

C. Classify the names of these websites and write them under correct boxes.

 

E-card	123 greetings
Chatting	googlehangouts
Online shopping	Flipkart
Social Networking	Facebook
Videoconferencing	Skype
Online reservation	irctc

D. Answer in short.

Que 1 What is cloud storage?

Ans - Cloud Storage is networked storage or disk space, available over the Internet.

Que 2 What is inking?

Ans –   Making a note within the browser is called inking.

Que 3 What are crawlers?

Ans – Search engines use automated software known as robots or spiders or crawlers to search the web for the information we are looking for.

Que 4 What is a blog? Give an example of a blogging website.

Ans – Blogs are often made on educational topics, sports, web design, gadgets, tour and travels, cooking etc. A blog typically focuses on a particular subject matter. Some of the popular blogging sites are Blogger.com,Wix.com, Wordpress etc.

E. Answer in detail.

 Que 1 How do you save a picture from a web page to your hard disk?

Ans – To search and save an image–

Step 1: Open a search engine and click on Images option.

Step 2: Type the name of the image. A number of images are displayed.

Step 3: Click on Search Images button.

Step 4: Click on the image to open it.

Step 5: Right-click on the image and select Save picture as option.

 Que 2 What are search engines? How do they work?

Ans –   Search engines are specially programmed websites that are designed to help people find information on the web. They search engine is a special program that searches the web for keywords given by us and displays a list of websites. The most popular search engines are Google, Bing and MSN search. Search engines perform these basic tasks:

*      They search WWW.

*      They select information based on the specified keywords.

*      They keep an index of the words they find, and where they find them.

*      They display users a list of websites that match the keywords found in their index.

 Que 3 Write the difference between upload and download.

Ans - Download is the process of receiving programs or information from the Internet.

         Upload is the process of putting programs or information from our computer on the Internet.

Que 4 How Internet useful in education?

Ans - Internet plays a very vital role in education. In this modern era everyone prefers Google for their queries, problems or doubts. Popular search engines like Google, Yahoo, etc. are the topmost choice of people as they offer an easy and instant reach to the vast amount of information in just a few seconds.This not only makes education cost effective but also saves time. Other than this, teachers use the Internet to supplement their lessons. Internet is like a huge library that is used for information gathering and research.

 Que 5  How is Internet useful in shopping?

Ans – Online shopping means buying and selling products using the Internet. It is a convenient method of shopping in which we can buy or sell anything from our home in just few minutes. It offers a wide range of items to choose from. It saves a lot of time. There is no hassle of waiting in line at the billing counters. Online shopping can be done 24 hours a day and 7 days a week. We do not need to carry cash or travel in bad weather. We can pay through a credit or debit card. Many websites offer the facility of COD (Cash On Delivery), which means pay after the product is delivered at the mentioned address. Some of the online shopping websites are www.flipkart.com, www.amazon.in, www. snapdeal.com, etc.

Que 6  Write any five disadvantages of social networking?

Ans – Disadvantages of social networking:

*      Cyberbullying is a growing problem of using social networking websites. It is an act of intentionally threatening, humiliating or embarrassing someone over the Internet.

*      Many people create fake identities to exploit and abuse others.

*      Confidentiality and privacy are very big issues because people post personal information online.

*      These sites can be very addictive. People use them till late night neglecting their studies, diet and other important work. This affects their health.

*      These sites open up the possibility for hackers to commit fraud or launch and spread viruses.

Chapter 8 More About Visual Basic (Class 8)

 

Class VIII

 

Chapter 8

More About Visual Basic

 

A. Tick the correct answer and fill in the blank.

1. Label  

2. Enable

3. events

4. controls

5. Name

B. Name these controls following tools.

1. Button

2. Check box

3. Textbox

4. Label

5. Rectangle shape

6. Radio Button

 

C. Answer in short.

Que 1. What is the default name of new form added in the Visual Basic?

Ans -  Form1.vb is the default name of new form added in the Visual Basic.

 

Que 2. In which mode do you see the working of your application?

Ans –   In Run mode we see the working of our application .

Que 3. Which event of the command button triggers when user click left mouse button on it?

Ans – Click event of the command button triggers when user click left mouse button on it.

Que 4. What is an event-driven program?

Ans - In an event-driven program, the code of the program gets executed in the response to an event, rather than in the sequence in which they are written. Each action by the user causes an event to trigger.

 

D. Answer in detail.

 

Que 1. What is the use of Properties window in the visual Basic IDE?

Ans - A property refers to the characteristics of an object. The Properties window is use to displays the properties of the selected object. Some commonly used properties are Name, Font, Size, Forecolor, Backcolor, Text, etc. 

             

Que 2. How do you add control on the Visual Basic form?

Ans –   Visual Basic form acts as a background for other controls. We can add controls on the form using two different ways:

*       Select the control to be added on the form by clicking on the tool in the toolbox and then drag it on the form.

*       Double–click the control in the toolbox. It gets added to the top left corner of the current form.

 

Que 3.  Describe any three properties of TextBox control.

Ans –  Three properties of Textbox Control are:

Sn.	Properties	Use
1.	Name	This property sets the name of the TextBox that is used while coding.
2.	Text	This property sets the default text to be displayed in the TextBox.
3.	MaxLength	This property sets the maximum number of characters that a user can type in the TextBox.

 

 

Que 4.  What is Visual Basic? Write any four feature of VB.

Ans –  VB or Visual Basic is a high-level programming language which provides a fast and easy way to create interactive applications. Visual Basic has the following features:

*       It is an event driven language.

*   It provides a collection of mathematical, string and graphical functions.

*       It provides powerful database access controls.

*       It provides useful debugging and error handling tools.

 

Que 5.  What is a form in VB? Describe three of its property.

Ans – The Visual Basic form is used to design an interface by adding various controls on the form using which a user can interact with the application. Like any other control, a form has its own set of properties and events to control its appearance and behaviour.

Sn.	Properties	Use
1.	ForeColor	This sets the color for the text on the form.
2.	BackColor	This sets the background color of the form.
3.	Name	This is used to set the name of the form to refer it.