Class

8 ANSWER KEY
Touchpad PLUS Ver 2.1

1. Computer Networking
Let’s Plug-in (Page no. 7)
1. Telephone 2. Social Media 3. Letter 4. Telegram

L et ’ s C atch U p (Page no. 11)

1. Server 2. Internet 3. ISP 4. URL

L et ’ s C atch U p (Page no. 16)

1.
e 2. d 3. c 4. b 5. a

L et ’ s C atch U p (Page no. 18)

1. HTTPS- Hypertext Transfer Protocol Secure
2. IMAP- Internet Message Access Protocol
3. FTP- File Transfer Protocol
4. TCP/IP- Transmission Control Protocol/Internet Protocol

Test Your Skills

1. a. (i) b. (ii) c. (iii) d. (i) e. (i)
2. a. protocol b. SMTP c. router d. mesh e. NIC
3. a. F b. T c. T d. T e. T
4. a. Protocol is a set of rules that governs the communication between the computers over a
network.
b. A client is a computer which depends on the server for all the resources. A server is also
called as the host computer. A server controls the access to the hardware and software on
the network.
c. Topology refers to the geometric arrangement of computers or nodes in a network.
d. A gateway is a network device that allows data to flow between two different networks which
may use different protocols.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 1

5. a. The computer network means a system of interconnected computers and other computing
devices. The advantages of computer network are:
(i) The information can be easily shared by the people.
(ii) It helps in reducing the cost of hardware.
(iii) Store information on one centralised location.
(iv) Reliability implies backing up of information. If a system crashes, then the information
is accessible on another workstation for future use.
(v) Reduction in installation cost.
(vi) User authentication process to secure the data.
(vii) People will have the accessibility to all the information they need to get and share
through e-mails
b. LAN is a digital communication system that interconnects a larger number of computers and
other peripheral devices within a radius of less than 1 km.
MAN consists of two or more local area networks or campus area networks together that
usually spans several buildings in the same city or town.
c. Web page is a single digital page on the World Wide Web (WWW) that contains information
and links of another pages. Web pages are created by using the Hyper Text Markup Language
(HTML), whereas website is a collection of web pages which are interlinked to each other. A
website may contain thousands of web pages.

Fun Zone

Let's Solve

1. a.  Ring Topology b.  Network Server

1 2
2.
B N
3 C L I E N T 4
U T S

E W 5 T

T O H A

O 6 R O U T E R
O K B

T 8
7 H T T P
2
P

2 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 Let ’s Explore

Do it yourself.

Tech Practice
Do it yourself.

2. Introduction to Adobe Photoshop CC

Let’s Plug-in (Page no. 22)
Do it yourself.

L et ’ s C atch U p (Page no. 31)

1. Rectangular Marquee Tool 2.  Elliptical Marquee Tool

3. Lasso Tool 4.  Polygonal Lasso Tool

Test Your Skills

1. a. (ii) b.  (iii) c.  (iv) d.  (ii) e.  (i)
2. a.  advanced b.  tiny dots c.  .psd d.  began
e. 
Application
3. a. 
F b.  T c.  T d.  F e.  T

4. a. Pixels are the short for Picture Element. The computer screen comprises of tiny little dots.
These tiny dots are known as pixels.
b. The Paint Bucket Tool in Photoshop fills adjacent pixels that are similar in color in the image.
It fills with either the selected foreground color or with a pattern.
c. Rasterizing means the text will be converted into pixels, allowing you to make image
adjustments that normally do not work with text layer. Rasterize is the process of converting
a vector image to a raster image.
d. Layers panel contains all the layers present in the Photoshop document. Whenever you add
an image into a Photoshop document, a new layer is created.
e. A layer can be defined as one image stacked on top of another to form a complete image.
5. a. Selection tools are used to select certain areas of the image to work without affecting the
unselected areas. Some of the Selection tools are Rectangular Marquee Tool, Elliptical
Marquee Tool and Lasso Tool.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 3

 b. Some of the blending brush combinations of the Mixer brush are Dry, Moist, Wet, Very Wet,
etc. Follow the below steps to use the Mixer Brush Tool:
Step 1: Open a new document and select the Mixer Brush Tool from the Tools panel.
Step 2: Select the desired brush from the Brush Presets Picker in the Options bar.
Step 3: To sample a color either you can click on the Current brush load from the Options
bar and select the desired color or press Alt key and click from where you wish to sample
color in the current image.
Step 4: Set various options in the Options bar according to your preferences. Specifying the
percentages of Wet, Load, Mix and Flow effects the outcome on the canvas.
Step 5: Click and drag the mouse on image to paint.
c. Slice Tool divides an image or layout into smaller sections called slices which can be exported
and developed separately. This is mainly used for web publications. These small slices can be
saved as a separate file and can be modified using the Save for Web command. The slices
created manually are called user-slices. As we create user-slices, Photoshop automatically
divides the rest of the area.
d. Quick Selection Tool makes a selection based on the color and contrast of the same color
in the image that you wish to select. It remembers all the consecutive strokes. This way you
can make different selections in a single image also. Quick selection tool is used to select a
bigger area to work whereas the magic wand tool is used to work with a specific area. Hence
Magic wand tool is better that the quick selection tool.
6. a.
Background/Foreground b.  Horizontal Type tool
c.  Move tool

Fun Zone

Let's Solve

1. a.  Gradient Tool b.  Color Replacement Tool c.  Crop Tool

2. a.  Vertical Type Tool b.  Gradient Tool c.  Color Replacement Tool

d.  Lasso Tool e.  Crop Tool

Let ’s Explore

Do it yourself.

Tech Practice
Do it yourself.

4 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

3. More on Adobe Photoshop CC
Let’s Plug-in (Page no. 45)

Rectangular Marquee Tool Quick Selection Tool

Crop Tool Slice Tool

L et ’ s C atch U p (Page no. 57)

1. Hand Tool 2.  Rotate View Tool 3.  Zoom Tool
4. Rectangle Tool 5.  Ellipse Tool 4.  Line Tool

Test Your Skills

1. a. (iii) b. (ii) c. (ii) d. (i)
2. a. 
Background b.  Info c. 
Red Eye d.  Sharpen
3. a. 
F b. F c. F d. T
4. a. 1. Delete a layer by clicking on the Delete layer button.
2. Add a style to a layer by clicking on the Add a layer style button.
b.
A Ruler Tool is a handy tool that you can use to measure and draw outlines in any direction.
c.
Blur Tool makes the image hazy or softens the pixels of an image. It helps to highlight the
main object in the image.
5. a.
The various options of the Image menu are as follows:
Adjustments: It allows you to access various tools for changing the brightness, contrast,
(i)
levels, exposure, vibrancy, hue/saturation, and color balance of an image.
Canvas Size: It allows you to change the width and height of the whole working area
(ii)
according to your requirement.
Reveal All: It expands the canvas as large as necessary to reveal full image when an
(iii)
image been moved beyond the canvas boundary.
Apply Image: It allows you to apply a Blend Mode to the layer. It opens a dialog box
(iv)
with Source and Target tabs. From the Source tab, you can choose a layer on which
blend modes will be applied. From the Target tab, you can select different blend modes
to apply.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 5

 b.
Spot Healing Brush Tool is also known as texture replacement tool because it blends the
wrong or bad texture of one area in an image with the good or fine texture area of the same
image. The result of the spot removal may vary depending on the complexity of the image.
It can be used to remove the acne or skin blemishes and scars completely from an image.
c. Steps to draw a straight path segment are:
Step 1: Create a new document in Photoshop or open an existing image.
Step 2: Select the Pen Tool to from the Tools panel and set the mode of the Pen Tool to
Path from the Options bar.
Step 3: Click on a point to start the path.
Step 4: Press the Shift key and click on the next point to draw a straight path.
Step 5: To close the shape, return to the first point and click once when the small circle
appears.
Perform the below steps to draw a curved path segment:
Step 1: Click to create the second point and drag with the Pen Tool before you release the
mouse button. You will see handles appear. These handles determine the acuteness
of the curve and its direction.
Step 2: Click on the small square at the end of the handle line and drag the mouse around
to adjust the handles.
Step 3: When you are satisfied with the shape of the curve, release the mouse button.

Fun Zone

Let's Solve

1. a.  History Brush Tool b.  Horizontal Type Tool

2. a. 
Layers Panel b.  Eraser Tool c.  Hand Tool d.  Blur Tool
e.  Magic Wand Tool

Let ’s Explore

Do it yourself.

Tech Practice
Do it yourself.

6 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 Periodic Assessment–1
(Based on chapters 1 to 3)
A. 1. Ring 2. Tree 3. Bus 4. Star
B. 1.
e. 2. d. 3. a. 4. c. 5. b.

C.
Layer filtering options

Indicates layer
visibility
Layers

Add layer mask

Delete layer
Link layer

add a layer style Create new layer

Create new fill or Create a
adjustment layer new group

4. Computer Safety and Security

Let’s Plug-in (Page no. 63)
Do it yourself.

L et ’ s C atch U p (Page no. 65)

1.  Cleaning the keyboard 2.  Cleaning the Mouse
3.  Cleaning the Monitor

L et ’ s C atch U p (Page no. 70)

1. F 2. T 3. T 4. T

Test Your Skills

1. a. (iii) b. (ii) c. (ii)
2. a.
malware b.  biometric c.  decryption d.  encryption e. zombie

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 7

3. a. Authentication is the process of verifying a user’s identity before granting him or her
access to a computer system. Types of authentication are: Password Protection, Biometric
Authentication,etc.
b. Trojan horse is a type of malware. It conceals itself inside the software that seems legitimate.
c. An antivirus program is used to detect the presence of a virus on a computer and remove
the virus.
4. a. 1. cleaning the keyboard
2. cleaning the mouse
3. cleaning the monitor
b. Malware is a malicious software. It refers to software programs designed to damage or
carryout other unwanted actions on a computer system. In Spanish, ‘mal’ is a prefix that
means ‘bad,’ making the term ‘badware,’ which is a good way to remember it.
The different types of malware are virus, worm, trojan horse, spyware, zombies, ramsomware,
rootkit and backdoor.
c. A computer virus is a ‘piece of code’ or program developed to corrupt the data or program
files stored on the computer system. It enters the computer without permission of the user.
The user of the computer may not even realise that the computer is affected by a virus.
Whereas, A computer worm is a type of malware that has the capability to replicate itself
without any human interaction. It consumes lots of memory space in replication. Once
a computer has been infected by a worm, its processing speed gets slow-down, works
unexpectedly and halts other tasks.

Fun Zone
Let's Solve

1. a. Virus b. Trojan c. zombie

2. a.  Password protection.
b.  Take a backup of original data.
c. His computer is infected by a virus. It can be resolved by installing antivirus software like
McAfee.

Let ’s Explore

Do it yourself.

Tech Practice
Do it yourself.

8 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

5. Google Apps
Let’s Plug-in (Page no. 73)

Facebook WhatsApp Twitter Instagram

Origin country for all these apps is USA.

L et ’ s C atch U p (Page no. 77)

1. Gmail 2. Google Maps 3. Google Drive 4. YouTube

L et ’ s C atch U p (Page no. 85)

Yes Google Slides are different from the MS PowerPoint. You need to have a license to use
MS Powerpoint on any device, whereas you don’t need any license to work on Google slides.

Test Your Skills

1. a. (iii) b. (i) c. (ii) d. (i) e. (iii)
2. a. 
Sundar Pichai b.  encryption c.  share d.  Map, Satellite, Terrain
e. saved
3. a.
Google Drive is a cloud-based storage service. With Google Drive, multiple users can access
a single file at the same time, at different locations and from different devices.
b.
Google Slides is an online version of Microsoft PowerPoint developed by Google in 2006.
c.
Google Maps is a digital navigation program that provides detailed information about the
geographical regions of any particular area. Google Map was launched on February 8, 2005.
d.
Google mail or Gmail is one of the best and free mailing apps accessible through a web
browser over the Internet.
e.
Google Docs is a free online word processing program. It is similar to Microsoft Word.
4. a.
Follow the below steps to open Google Docs:
Step 1: Click on the Google apps button.
Step 2: C
 lick on the Docs icon from the drop-down menu. The Start a new document page
appears.
Step 3: Click on the Blank template.
b.
Some of the features of YouTube are:
(i)
Users can search for any particular keyword and watch videos
(ii) Create a personal YouTube channel.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 9

 (iii) Upload videos to your channel.
(iv) Like/Comment/share other YouTube videos.
(v) Users can subscribe/follow other YouTube channels and users.
c. YouTube is the most widely used video sharing application where users can upload their
videos, share, comment, watch and like other videos.
Views on YouTube are: Do it yourself.
d.
Google introduced Google Sheets, a spreadsheet application on March 9, 2006. It works like
any other spreadsheet tool, but since it is an online app, it offers much more than just the
spreadsheet tools.
Perform the following steps to share a spreadsheet:
Step 1: Click on the Share button from the top-right corner of the spreadsheet.
Step 2: Enter the email address(es) of the people with whom you want to share the spreadsheet
in the box.
Step 3: Assign permission levels by clicking on the Settings button.
Step 4: Click on the status of the receiver.
Step 5: Type a message for the receiver in the Message box.
Step 6: Click on the Send button to share the file.
Perform the following steps to protect a spreadsheet:
Step 1: Select the Data à Protected sheets and ranges option from the menu bar. You can
lock editing of some cells in a sheet or even a cell range in a sheet.
Step 2: Select the data you would like to protect or choose Range or Sheet, to protect an
entire sheet.
Step 3: Click on Set permissions button.

Fun Zone

Let's Solve

1. a. View button
b. Google Maps
2. a. Google Slides b.  YouTube c.  Google Sheets d.  Broadcast yourself
e. Google Docs f.  Google Drive g.  Gmail h.  Map view
i. Google

Let ’s Explore

Do it yourself.

10 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 Tech Practice
Do it yourself.

Periodic Assessment–2
(Based on chapters 4 & 5)
A. 1. Rootkit is a malware that gains administrator access to the host system. Once the attacker
gains access to the system, the rootkit gets hidden but retains special access to the system.
The detection of rootkit is difficult as having special access to the system, it bypasses the
tracking software.
2. Backdoor: Backdoor is a type of malicious software which enters into the computer through
bundled with other software or files. It is used to gain remote access to the host computer.

B. 1. THUMBS UP icon for ‘Like’ 2. Google Sheets

3. Google Maps 4. THUMBS DOWN icon for ‘Not Like’
C. She can use Google Drive.

Test Sheet–1
(Based on chapters 1 to 5)
A. 1. (i) 2. (ii) 3. (iii) 4. (iii) 5. (ii)
6. (iii) 7. (i)
B. 1. internal link 2. Eyedropper 3. began 4. Router 5. malware
6. biometric
C. 1. T 2. F 3. F 4. T 5. T
D. 1. A Ruler Tool is a handy tool that you can use to measure and draw outlines in any direction.
2. There are mainly five components of a network which are as follows:
• Sender: A sender is a computer that wants to send information to other computer
connected to the network.
• Receiver: A receiver is a computer which is expecting the data from other computer on
the network.
• Transmission Medium: A transmission medium is a communication channel through
which information is transferred from one computer to another on a network.
• Message: A message is the information or data which needs to be transferred from one
computer to another.
•  Protocol: A protocol is a set of standard rules used for communication.
3. An Internet Protocol (IP) address is an unique identification number assigned to a computer
connected to a network. It has two main functions: host or network interface identification
and location addressing. IP addresses are written and displayed in human-readable notations,
such as 172.16.254.1.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 11

 4. Authentication is the process of verifying a user’s identity before granting him or her access
to a computer system.
5. Google Docs is a free online word processing program. It is similar to Microsoft Word.
E. 1.
Adjustments: It allows you to access various tools for changing the brightness, con-trast,
levels, exposure, vibrance, hue/saturation, and color balance of an image.
Auto Tone: It automatically adjusts the black point and white point in an image.
Auto Contrast: It adjusts image contrast automatically.
Auto Color: It adjusts the contrast and color of an image.
2. A LAN is a digital communication system that interconnects a larger number of computers
and other peripheral devices within a radius of less than 1 km.
MAN consists of two or more local area networks or campus area networks together that
usually span several buildings in the same city or town.
3. Some of the features of YouTube are:
(i) Users can search for any particular keyword and watch videos
(ii) Create a personal YouTube channel.
(iii) Upload videos to your channel.
(iv) Like/Comment/share other YouTube videos.
(v) Users can subscribe/follow other YouTube channels and users.
4. Follow the below steps to open Google Docs:
Step 1: Click on the Google apps button.
Step 2: Click on the Docs icon from the drop-down menu. The Start a new document page
appears.
Step 3: Click on the Blank template.

5. Malware is a malicious software. It refers to software programs designed to damage or

carryout other unwanted actions on a computer system. In Spanish, ‘mal’ is a prefix that
means ‘bad,’ making the term ‘badware,’ which is a good way to remember it.
The different types of malware are virus, worm, trojan horse, spyware, zombies, ramsomware,
rootkit and backdoor.
6. A computer virus is a ‘piece of code’ or program developed to corrupt the data or program
files stored on the computer system. It enters the computer without permission of the user.
The user of the computer may not even realise that the computer is affected by a virus.
Whereas, A computer worm is a type of malware that has the capability to replicate itself
without any human interaction. It consumes lots of memory space in replication. Once
a computer has been infected by a worm, its processing speed gets slow-down, works
unexpectedly and halts other tasks.
7. (This question was printed incorrectly in the book, please correct this question in your
textbook)
Question: What is Google Sheets? How can you share and protect data in Google Sheet?

12 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 Ans. Google introduced Google Sheets, a spreadsheet application on March 9, 2006. It works
like any other spreadsheet tool, but since it is an online app, it offers much more than just
the spreadsheet tools.
Perform the following steps to share a spreadsheet:
Step 1: Click on the Share button from the top-right corner of the spreadsheet.
Step 2: Enter the email address(es) of the people with whom you want to share the
spreadsheet in the box.
Step 3: Assign permission levels by clicking on the Settings button.
Step 4: Click on the status of the receiver.
Step 5: Type a message for the receiver in the Message box.
Step 6: Click on the Send button to share the file.

Perform the following steps to protect a spreadsheet:

Step 1: Select the Data à Protected sheets and ranges option from the menu bar. You can
lock editing of some cells in a sheet or even a cell range in a sheet.
Step 2: Select the data you would like to protect or choose Range or Sheet, to protect an
entire sheet.
Step 3: Click on Set permissions button.

6. Latest Technological Developments

Let’s Plug-in (Page no. 94)
1. TECHNOLOGY 2. INTELLIGENT

L et ’ s C atch U p (Page no. 95)

1. Natural Language Processing
2. Intelligent agent 3.  Pattern Recognition

Test Your Skills

1. a. (iii) b. (ii) c. (i) d. (i) e. (ii)
2. a. 
Augmented Reality b. RPA c. Shakey d. Virtual
e. RP
3. a. 
F b.  T c.  F d.  T e. F
4. a.
AI is the branch of computer science that aims at creating expert and intelligent computer
systems which simulate certain human qualities such as, learning, reasoning, communicating,
seeing, hearing, and sensation.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 13

 b.
Pattern Recognition software comprises of a camera and software which together identify
repetitive patterns and establish connections between the patterns stored in the database and
the perceived patterns. Facial recognition software, video surveillance cameras, fingerprint
identification and automatic voice recognition software are some examples of pattern
recognition software.
c.
Rapid prototyping is used to create models to quickly test a new product before mass
production. 3D Printing can be termed as a RP method.
d.
RPA (Robotic Process Automation) refers to the process of automating certain tasks in an
industry through the use of robots. The purpose of RPA is to transfer the execution of the
process from humans to robots. Robotic automation uses the existing IT structure without
using any complex system integrations.
e.
Intelligent Apps are software written for mobile devices based on artificial intelligence and
machine learning technology, aimed at making everyday tasks easier.
5. a. (i) Expert system can be defined as a communicating computer program that can solve
problems which would otherwise require human assistance. These programs replicate
the reasoning process of experts in certain areas. For example, PROSPECTOR
(ii) Natural Language processing is the study of methods by which computers can recognize
and understand spoken or written human language. Speech recognition software is an
example of NLP where computers translate spoken speech into text.
(iii) Intelligent agent is a type of computer program that has built-in intelligence which keeps
a check on the work patterns, asks questions and performs tasks on the behalf of the
user. The simplest example of intelligent agents is surfing the Internet.
(iv) Augmented Reality is the blending of Virtual Reality and real life. AR is using technology
to superimpose information such as sounds, images and text on the real world that we
can see. Images are created by developers within applications that blend in with content
in the real world. AR users can interact with virtual content in the real world and can also
distinguish between virtual and real content.
(v)
Virtual Reality refers to a virtual world that the user can interact with. While in VR, the
user cannot easily distinguish between what is real and what is virtual. VR provides a
total immersive experience to the user. These technologies find the greatest use in
entertainment, sports/gaming, close interactive eye to eye communication and aided
shopping experiences. Some examples are Oculus Rift and Google cardboard.
b. Applications of AR are:
1.  SixthSense device 2.  Google Glass
3.  Star Walk 4.  Coloring book
Applications of VR are:
1.  Oculus Rift 2.  VR in education 3.  VR in medical
c.
It is a system of connected computing devices, mechanical and digital machines for creating
a virtual network where a monitoring center ensures that everything is working smoothly.
Each connected device has a unique identifier and can transfer data over the network without
any human intervention. The connected devices gather and share data about their usage and
their operative environment. The devices can be your smartphones, refrigerators, televisions,
washing machines, etc.

14 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 d. The applications of 3D Printing are:
1. Education 2.  Rapid Prototyping (RP) Method
3. Medicines 4. Construction
5.  Art and Jewelry
e.
AR stands for Augmented Reality, in this technology virtual objects are created and visualized
alongside with real life objects. Whereas VR or Virtual Reality is completely virtual yet it
feels real. While using the AR tech, you can partially see the real world, whereas the VR tech
completely cuts you off from the real world. It takes you to a virtual world where everything
is just a simulation.

Fun Zone
Let's Solve K J I P R T I G V D A V X Z

F G K R D F U P B C D S K Z

R O B O T I C S J H F G S F

D F S S T A R W A L K W R E

G D C P G F F R R T R W H F

C Z C E F D H D E Y D S G D

H J K C K L H G S H J L T E

V I R T U A L R E A L I T Y

G G O O G L E G L A S S E W

F D S R A S D F H W E R F S

Let ’s Explore

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Tech Practice

Do it yourself.

7. Images, Links and Frames in HTML5

Let’s Plug-in (Page no. 105)
Do it yourself.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 15

 L et ’ s C atch U p (Page no. 123)
A hyperlink is generally an underlined text which takes you to another web page when clicked.
Generally, hyperlinks are seen in blue colour.

Test Your Skills

1. a. (ii) b. 
(iii) c.  (iv) d.  (iii) e.  (i)
2. a.  F b.  F c.  F d. T e. T
3. a. internal link b.  <A> c. SELECT d. <FRAMESET> e. INPUT
4. a. HREF stands for Hypertext Reference.
b. ALINK attribute is used to set the color of the active link.
c. Frames are the different sections or parts of a web page.
d.
BORDER specifies the thickness of the border surrounding the image.
5. a. (i) This attribute is used to specify the action that will take place when we submit the
form values. It takes the URL of another web page or an e-mail address to receive the
information.
(ii) It specifies the type of method form will use to accept the values entered into form
fields. The most commonly used values for this attribute are POST and GET.
(iii) This attribute is used to specify the type of field we want to create. It takes one of the
predefined values.
b. 1. SRC attributes: It specifies the source or URL of the image that has to be inserted in
the web page. For example, <IMG SRC=”C:/Mydocuments/lily.jpg”>
2. ALIGN attribute: It aligns the image with respect to the text placed adjacent to the
image. Image can be aligned left, right, middle, bottom and top. For example,
<IMG SRC=”lily.jpg” ALIGN=”right”>
c. The attributes of the <FRAME> tag are:
(i) FRAMEBORDER: This attribute is used to define whether a border is to be created
around the frame or not.
(ii) NORESIZE: This attribute is used to restrict the user to resize the frame on the web
page.
(iii) SRC: This attribute is used to define the URL or path of the web page which is to be
linked to the frame.
d. <!DOCTYPE HTML>
<HTML>
<HEAD>
<TITLE> Audio </TITLE>
</HEAD>
<BODY>

16 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 <H1 ALIGN = “CENTER”> <FONT COLOR = “Red”>
Welcome to the Musical World </FONT></H1>
<P ALIGN = “CENTER”>
<IMG SRC = “D:\MusicalNote.Jpg”>
</P>
<AUDIO SRC = “D:\flute.mp3” AUTOPLAY CONTROLS>
</AUDIO>
</BODY>
</HTML>

Fun Zone

Let's Solve

1. a.  <FRAMESET> tag b.  <IMG> tag

Tech Practice
Do it yourself.

Periodic Assessment–3
(Based on chapters 6 & 7)
A. 1. Augmented Reality is the blending of Virtual Reality and real life. AR is using technology to
superimpose information such as sounds, images and text on the real world that we can see.
2. In Virtual Reality, we create a virtual world that users can interact with. In this world, the user
cannot easily distinguish between what is real and what is virtual.
3. RPA or Robotic Process Automation allows organizations to automate tasks which human
beings were doing across any applications and systems.
4. Internet of Things (IoT) has become a buzzword nowadays throughout the world. It is a
system of connected computing devices, mechanical and digital machines for creating a
virtual network where a monitoring center ensures that everything is working smoothly.
B. 1 HEIGHT: It is used to specify the height of the frame.
2. CHECKBOX: This value is used to create a check box control. A check box control allows us
to select multiple options from a set of options
3. NAME: It is used to specify the name of the frame. This name can be used in the TARGET
attribute of the <A> tag
C. <HTML>
<HEAD> <TITLE> Inserting Image </TITLE>
</HEAD>

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 17

 <BODY>
<B> Inserting image on the web page </B>
<IMG SRC=”lily.jpg” WIDTH=”200px” HEIGHT=”200px” ALIGN=”right” BORDER=”2”>
</BODY>
</HTML>

8. Loops in Python
Let’s Plug-in (Page no. 128)
1. F 2. T 3. T

L et ’ s C atch U p (Page no. 135)

Hello Touchpad
An infinite loop is created with the above message

Test Your Skills

1.
a. (ii)
b. (This question was printed incorrectly in the book, please correct this question in your
textbook)
Question: Which of the following is a conditional statement in Python?
(i) for statement (ii) while statement
(iii) if statement (iv) break statement
Ans. (iii)

c. (i) d. (iii)
2. a.  while b.  Non-zero, false c.  infinite d.  break, continue
3. a. 
F b.  F c.  T d.  T e. T
4. a. Looping refers to the process of repeating a set of statements repeatedly on the basis of a
condition until the condition is falsified.
b. The syntax of for loop is
for <variable> in <iterator>:
    Statements
c. There is a situation when the control of the program needs to be transferred out of the loop
body, even if all the values of the iterations of the loop have not been completed. For this
purpose, jumping statements are used in Python.

18 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

5 a.
for each
item in
sequence

Last item True

reached?

False

Body of for

Exit loop
b. The while statement executes a set of statements repeatedly, until the logical expression
evaluates to true. When the condition becomes false, the control comes out of the loop.
The syntax of while statement is given below.
Syntax:
while (test expression):
    Statements

False
Test Expression

True

Execute while Block

c. The break is a keyword in Python which is used for bringing the program control out of
the loop. When a continue statement is encountered inside a loop, control of the program
jumps to the beginning of the loop for next iteration, skipping the execution of rest of
the statements of the loop.

Fun Zone

Let's Solve

1. 55
2. apple
banana
cherry
3. 2
4
4. 0

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 19

 0
1
0
2
5. 0
1
2
0

Let ’s Explore

Do it yourself.

Tech Practice
1. num = int(input(“Enter a number: “))
sum = 0
temp = num
while temp > 0:
digit = temp % 10
sum += digit ** 3
temp //= 10
if num == sum:
print(num,”is an Armstrong number”)
else:
print(num,”is not an Armstrong number”)
2. i=0
for i in range(8, 90, 3):
print(i)
3. i=0
for i in range(100, 1, -2):
print(i)
4. i=0
while ( i <= 100):
i = i+1
print(i)
5. i=0
a=0

20 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 while ( i < 100):
i += 1
a = i+a
print(a)
6. Using While loop
i=0
a=0
b=0
while ( i < 10):
a=a+2
b=b+a
i=i+1
print(b)
Using For loop
a=0
for i in range(1, 11):
a=a+i
print(a)
7. i=0
a=1
b=0
while(i < 20):
a=a+2
i=i+1
b=b+a
print(b)

9. Functions and String in Python

Let’s Plug-in (Page no. 140)
sum = 0
i=1
while(i<6):
sum += i
i += 1
print(“The sum of the first five natural numbers is: “, sum)

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 21

 L et ’ s C atch U p (Page no. 147)
1. A sequence of characters which is enclosed or surrounded by single (‘ ’) or double (“ ”) quotes
is known as a string.
2. An escape sequence is a sequence of characters that does not represent itself when used
inside a character or string. It is typically used to specify actions such as carriage returns and
tab movements.

Test Your Skills

1. a. (i) b. (iii) c. (ii) d. (i) e. (ii)
2. a. append b.  Function c.  lower d.  string
3. a A function can be defined as a block of a reusable code that performs a specific task.
Functions help us to break our program into smaller pieces or modules.
b. A sequence of characters which is enclosed or surrounded by single (‘ ’) or double (“ ”)
quotes is known as a string. The sequence may include a letter, number, special characters
or a backslash. Python treats single quotes as double quotes
c. Two features of functions are:
1. A program is divided into small modules and each module performs some specific task.
Each module can be called as per the requirement.
2. We can call a function as many times as required. This saves the programmer the time and
effort to rewrite the same code again. Therefore, it also reduces the length of the program.
4. a. A Python function consists of the following components:
 Name of the function: A function name should be unique and easy to correlate with the
task it will perform. We can have functions of the same name with different parameters.
 Arguments: The input given to the functions are referred to as arguments. A function can
or cannot have any arguments.
 Statements: The statements are the executable instructions that the function can perform.
Return Value: A function may or may not return a value.
b. A function can be called anytime from other functions or from the command prompt after the
definition. For calling a function, we type the function and pass the parameters. For example:

22 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 Built-In Functions: The print() and input() belong to the category of built-in functions.
c. 
We also have other built-in functions like range(), type(), etc. The main difference between
these two categories is that built-in functions do not require to be written by us whereas a
user-defined function has to be developed by the user at the time of writing a program.
User-Defined Functions: User-defined functions are created by the user according to the

need of the program. Once the user defines a function, the user can call it in the same way
as the built-in functions. User-defined functions are divided into various categories based
on the parameters and return type.
d. Two built-in functions to manipulate strings:
1. len(): The len() function calculates and returns the length of a string supplied as an argument.
  Syntax of using len() function is:
 len(string_name)
2. lower(): The lower() function converts all uppercase letters to lowercase. Syntax of using
lower() function is:
 string_name.lower()

Fun Zone

Let's Solve

1. The original string is : Good Morning

The resultant string : GOOD MORNING
2. 5 has occurred 2 times.

10. Domains of AI
Let’s Plug-in (Page no. 152)
Do it yourself.

L et ’ s C atch U p (Page no. 153)

Natural language processing and Big Data

Test Your Skills

1. a. (iii) b. (i) c. (ii) d. (i)
2. a. T b.  T c.  T d.  T e. T

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 23

3. a. Big Data allows AI systems to train on live data and provide valuable information.
b. This is a subfield of AI which helps in communication between human and computer in
natural language. It enables a computer to read and understand data by mimicking human
natural language.
c. Computer Vision is a very popular field of AI that trains a computer to understand and
interpret the visual world.
4. a. Two real life usages of NLP are:
1. NLP checks the sender of the email and categorises the mails as spam or junk.
2. NLP also finds its use in the auto complete and spell check feature of word processors.
b. Two advantages of AI are:
Quick Decision Making: The speed at which humans take decisions is much slower than
1. 
AI systems. Humans’ reaction to situations is much slower whereas AI enabled systems
can process information faster and are also structured way more efficiently.
Accuracy: Human intelligence is not failure proof, but AI systems are. AI driven software
2. 
can only be faulty due to human limitations or hardware failure. Therefore, AI is used in
production lines to detect small cracks or defects in parts that are normally undetectable
by the human eye.
c. Applications of computer vision are:
1.  Self-driving cars use computer vision to examine their surroundings and plan its path.
2. Drones can use computer vision to examine the health of crops and alert the farmers of
the crop’s condition.

Fun Zone

Let's Solve

Do it yourself.

Periodic Assessment–4
(Based on chapters 8 to 10)

A. num = 407
if num > 1:
# check for factors
for i in range(2,num):
if (num % i) == 0:
print(num,”is not a prime number”)

24 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 print(i,”times”,num//i,”is”,num)
break
else:
print(num,”is a prime number”)
# if input number is less than
# or equal to 1, it is not prime
else:
print(num,”is not a prime number”)
B. num = int(input(“Enter a number: “))
factorial = 1
if num < 0:
print(“Sorry, factorial does not exist for negative numbers”)
elif num == 0:
print(“The factorial of 0 is 1”)
else:
for i in range(1,num + 1):
factorial = factorial*i
print(“The factorial of”,num,”is”,factorial)
C. 1. This is a subfield of AI which helps in communication between human and computer in
natural language. It enables a computer to read and understand data by mimicking human
natural language.
2. Computer Vision is a very popular field of AI that trains a computer to understand and
interpret the visual world.
3. Artificial Intelligence (AI) is the part of computer science concerned with designing intelligent
computer systems, that is, systems that exhibit characteristics we associate with intelligence
in human behaviour—understanding language, learning, reasoning, solving problems, and
so on.
D. 1. Big Data allows AI systems to train on live data and provide valuable information.
2. A function can be defined as a block of a reusable code that performs a specific task.
Functions help us to break our program into smaller pieces or modules.
3. There is a situation when the control of the program needs to be transferred out of the loop
body, even if all the values of the iterations of the loop have not been completed. For this
purpose, jumping statements are used in Python. Python offers two jumping statements—
break and continue, which are used within the loop.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 25

 Test Sheet–2
(Based on chapters 6 to 10)
A. 1. (iii) 2. (i) 3. (iii) 4. (i) 5. (i)
6. (ii) 7. (i) 8. (iii)
B. 1. in-built 2.  break, continue 3.  Augmented Reality 4.  AI
5.  human intelligence 6  <FRAMESET> 7.  href
C. 1. F 2. F 3. T 4. T 5. T
D. 1. Looping refers to the process of repeating a set of statements repeatedly on the basis of a
condition until the condition is falsified.
2. Authentication is the process of verifying a user’s identity before granting him or her access
to a computer system.
3. Rapid prototyping is used to create models to quickly test a new product before mass
production. 3D Printing can be termed as a RP method.
4. HREF stands for Hypertext Reference.
5. The definition list is also known as description list. The description list is created by using
the <DL> tag in conjunction with <DD> and <DT> tags. The <DL> tag defines the entire
description list. The <DT> tag defines the description term. The <DD> tag defines the
description term’s definition.
E. 1. Internet of Things is a system of connected computing devices, mechanical and digital
machines for creating a virtual network where a monitoring center ensures that everything
is working smoothly. Each connected device has a unique identifier and can transfer data
over the network without any human intervention.
A lightbulb that can be switched on using a smartphone app, a motion sensor or a smart
thermostat in your office or a connected streetlight are examples of IoT devices.

for each
2.
item in
sequence

Last item True

reached?

False

Body of for

Exit loop

26 Touchpad PLUS (Version 2.1)-VIII (Answer Key)

 By using while loop:
3.
limit = int(input(“ Please Enter the limit Value : “))
Sum = 0
N = 1
while N <= limit:
if(N % 2 == 0):
print(N)
Sum = Sum + N
N = N + 1
print(“The Sum of Even Numbers from 1 to”, limit, “is: “,Sum)
By using for loop:
Sum = 0
limit = int(input(“ Enter the last number of the range : “))
for even in range(1, limit+1):
if(even % 2 == 0):
print(even)
Sum = Sum + even
print(“The Sum of the even numbers till”, limit, “is: “, Sum)
4. <A HREF = ”Display.html”> Display </A>
5. AI is divided into 3 domians Natural Language Processing (NLP), Big Data, Computer Vision.
• Natural Language Processing: NLP is focussed towards the communication between
human and machine through the naturally spoken language.
• Big Data: Big Data allows AI systems to train on live data and provide valuable informtion.
• Computer vision: Computer vision works like human vision as it helps AI systems to gather
and process information through camera sensors.

Touchpad PLUS (Version 2.1)-VIII (Answer Key) 27