Cbse class 8 viii Chapter 7App Development exercise

Fill in the blanks

Question 1

Hybrid Apps combine features both of Web apps and Native Apps.

Question 2

The abbreviation of the word 'application' is app.

Question 3

Before installing an app on our device the manufacturer of the app will ask for certain permissions.

Question 4

Facebook app is an example of a Social Networking app.

Question 5

The E-Commerce app, that was founded by Sachin Bansal and Binny Bansal, is Flipkart.

Question 6

Desktop apps do not need web access and run independently on a computer.

Question 7

We can pay utility bills using the Banking app.

State True or False

Question 1

Google Maps is an e-commerce website.
False

Question 2

SDK stands for Software Design Kit.
False

Question 3

Hungama Music app brings your favourite tunes right to your device.
True

Question 4

Mobile apps can be preloaded on the Smartphones or Tablets.
True

Question 5

For the latest information on the global and Indian markets, install SBI Buddy on your mobile device.
False

Application Based Questions

Question 1

Sneha and her parents are planning to go for a movie. She wants to book the tickets online. Which app she can make use of to do the same?

Answer

Sneha can use the BookMyShow app to book the tickets for the movie online.

Question 2

Mannat had a school trip last month, where she clicked various photographs. Now she wants to share these photographs with her friends. Which app she can use for it?

Answer

Mannat can use Whatsapp to share the photographs with her friends.

Multiple Choice Questions

Question 1

Reddit is a Social Networking site which is also called a .......... app.

News Aggregator ✓
Banking
Video sharing

Question 2

.......... is an app which lets you build your own apps.

Flipkart
Facebook
Appy Pie ✓

Question 3

Some app-builder apps let you build your own apps without the thorough knowledge of ..........

OS
Programming Language ✓
Both of these

Question 4

Hotstar is an .......... app to watch a movie, catch up on your TV serial or sports.

Education
Entertainment ✓
Social Networking

Question 5

Buying or selling goods or services using electronic means is known as ..........

Money control
Finance
E-Commerce ✓

Answer the following

Question 1

How can you broadly categorize the apps? Explain any one app.

Answer

Apps can be broadly classified into three categories. They are:

Desktop apps
Web apps
Mobile apps

Desktop Apps in detail:

These apps are used on a desktop or laptop.
They do not need web access/internet.
They can run independently on a computer.
Desktop apps need to be installed on the device before they can run.
For example — Notepad, Word processor, spreadsheet etc.

Question 2

What are the requirements for developing an app?

Answer

The requirements for developing an app are as follows-

A good grasp of programming language (JAVA)
Android Software Development Kit (Android SDK)
Essential knowledge of-
a. Extensible Markup Language (XML)
b. HTML (HyperText Markup Language)
c. CSS (Cascading Style Sheets)

Question 3

What are the differences between Native apps and Hybrid apps?

Answer

The differences between Native apps and Hybrid apps are as follows-

Point	Native App	Hybrid App
Platform	It is developed specifically for one platform.	It is developed for more than one platform.
Cost	Development is expensive.	Development is cheaper.
Maintenance	Maintenance is complex as there are different versions for different platforms.	Maintenance is simple as there are only a few versions.
User Experience	They provide the best user experience.	Graphics are less accustomed with the OS, so user experience is not as good.

Question 4

Distinguish between a Desktop app and a Mobile app.

Answer

The differences between a Desktop app and a Mobile app are as follows-

Point	Desktop App	Mobile App
Device	It is used on desktops and laptops.	It is used on Smart phones or tablets.
Size	Apps can be of larger size.	Apps are usually smaller in size.
Examples	Paint, Notepad.	Mobile Pixlr, Facebook.

Question 5

How can you download and install an app from the Google Play Store?

Answer

To download and install an app from the Google Play Store, follow these steps-

Step 1 — Tap on the Play Store icon on the screen of your device.

Step 2 — Type the name of the app you wish to download (or the general description of the job that the app does), in the Search bar.

Step 3 — It will display the relevant list of apps. Now select the most suitable one by tapping on the name of the app.

Step 4 — Additional information about the app will be displayed. Check out the reviews and comments of previous users. If it meets your requirements, click on INSTALL button to install the app on your device.

Step 5 — The app will request you for the permission to access certain information on your phone. Confirm your consent and the app will be downloaded and installed on your device.

Step 6 — The app is now ready to use.

Question 6

Explain the importance of Educational Apps.

Answer

The importance of educational apps is as follows:

Students can access high quality educational resources from anywhere in the world.
The content is covered through a variety of media — pictures, charts, activities, videos, worksheets etc. This makes it easier to grasp and retain.
Students can learn at their own pace.
Teachers can use these apps to distribute study material quickly, conduct tests and grade the students efficiently.
Parents can monitor the progress of their child effectively.

Question 7

With the help of suitable examples, explain the Photo editing tasks that can be done using Desktop, Web, or Mobile Apps.

Answer

Photo editing means changing or manipulating some elements of a photo. Some tasks that are used to edit a photo are as follows:

Cropping — This tool allows us to adjust the framing of a photo to alter its composition. For example — we use cropping on photos when we set our Whatsapp status.
Colour correction — Photo editors provide various filters to alter the overall appearance of our photos. For example — we use filters to make our photos attractive.
Add text or stickers — We can add text or stickers to our photos using photo editors. For example — We use this tool to point out things in the photos.
Resize — This tool helps us to change the size of our photos. For example — When we fill any exam form online, the candidate's photo needs to be of a particular size (say less than 16 MB). This tool helps in resizing the photo.