L-8 Networking / Class 8th computer

 

Class-8^th

Subject – Computer

L-8 Networking

Draw and label type of network

Draw and Label type of Topology

A. Choose the correct answer

1. Which is the most commonly used network card.

1. Wi- Fi                        2. Bluetooth           3. Ethernet Network Card

2. What do we call the computers that are connected to the server?

1. Nodes                       2. Laptop                       3. Pc

3. …………….is a device that connects wireless communication devices to form a wireless network.

1. WAN                          2. Wi- Fi                         3. WAP

 

B. Fill in the blanks:-

1. In a Star topology , the local computers are connected to host computer.

2. In a  star topology, the host computer is connected to local computer.

3. The message is transmitted online and thus, it sets up a local area network

4. PAN is a computer network created for an individual person.

5. Network  System allows us to talk to any person in the world at any time.

C. State True or False

1. Nodes and servers have the same function.                   FALSE

2. Wi-Fi stands for Wireless Fidelity.                                    TRUE

3. WAN stands for Wide Area Network.                                TRUE

4. PAN generally covers a range of less than 10 meters. TRUE

5. Modern Ethernet networks use twisted pair cable containing eight wires.                                                                                                TRUE

D. Answer the following

1. What is Networking ? Give some common relevant examples.

Ans: A network is a collection of computers, servers, mainframes, network devices, peripherals, or other devices connected to one another to allow the sharing of data. An excellent example of a network is the Internet, which connects millions of people all over the world

 

2. List some advantages of Networking

Ans: Networking a computer brings efficiency, economy, and effectiveness in any organization.

1)  Efficient Use of Storage Media

2)  Preserving Information

3)  Reduction in Hardware Costs

4)  Efficiency

5)  Redundancy

6)  Quickest Document Delivery

 

3. Differentiate between LAN and WAN

Ans:

LAN	WAN
LAN stands for Local Area Network.	WAN stands for Wide Area Network.
The speed of LAN is high(more than WAN).	While the speed of WAN is slower than LAN.
LAN’s design and maintenance is easy.	WAN design and maintenance is difficult than LAN.
LAN covers small area i.e. within the building.	While WAN covers large geographical area.

 

 

4. Explain the term 'Network Topology'.

Ans: Network Topology is the arrangement of various elements (links, nodes, etc) of a computer on a logical network. Essentially, it is the topological structure of a network and may be depicted physically or logically.

 

5. Explain the following:

1. Star Topology

Ans: In Star  topology there is a host computer storing all data and

information which is connected to the local computers. The local

computers are not linked directly to each other. They communicate

only via the host computer through multiple communication lines.

 

2. Ring Topology

Ans: In Ring  communication system, there is no computer as such to transmit the data centrally. Thus, there is no controlling computer in this network. All local computers are connected to each other in a ring arrangement.

 

6. Differentiate between Bus Topology and Ring Topology

Ans: Bus Topology : In this topology, a signal transmission medium is shared by all the terminals as shown in the figure. When a particular computer wants to send a message to another computer, the system checks whether the communication line is free or not.

 

Ring Topology : In Ring  communication system, there is no computer as such to transmit the data centrally. Thus, there is no controlling computer in this network. All local computers are connected to each other in a ring arrangement.

 

Lesson 9 Basics of HTML / Class 7th Computer

Computer Science

Class-VII

Lesson 9 Basics of HTML

Make a list of HTML tags

Tag	Use	Attributes
<HTML>	Defines an HTML Document It helps the browser to understand that the HTML code starts from here<HTML> and ends from here </html>
<HEAD>…..</HEAD>	Defines information about the document It indicates the first part of HTML. It also contains Title bar
<TITLE>…..</TITLE>	Defines a title for the document  The title of the page is written here and displayed at the title bar of the explorer window
<BODY>…..</BODY>	Defines the document's body  This is the main part of our HTML document. All the content of the page are written with in this tag	BGCOLOR
<B>	make text BOLD
<I>	make text ITALIC
<U>	make text UNDERLINE
<BR>	move your text next line
<H1>	displays your text highest<h6> to lowest size<h1>. There are six levels of heading H1 to H6.
<FONT>	this tag is used to change the appearance of the text	COLOR, FACE, SIZE
<p>	Defines a paragraph
<SUB>	Defines Sub Scripted Text
<SUP>	Defines Super scripted Text
<STRONG>	Defines important Text

 

A. Fill in the blanks

Two , <br>,   <title> , .html ,  size

1. <title> tag is used to display the title of the document.

2. HTML tags are divided into Two categories.

3. We can save our HTML file with .HTML or .HTM extension.

4. <br> tag is used to move your text on next line.

5. The attributes of font tag are color, face and size

B. True or False

1. <B> tag is used to make out text bold.                                   TRUE

2. Heading tag has six levels from H1 to H6.                           TRUE

3. HEAD section contains body part.                                           FALSE

4. HTML is a case sensitive language.                                         FALSE

5. Container tag has both starting and ending                      TRUE

C. Short answer type questions

1. Name some popular web browser.

Ans: web browsers are..

1. Internet explorer

2. Google chrome

3. Mozilla Firefox

4. Netscape Navigator

 

2. how many levels of heading tag have. Name highest and lowest level.

Ans: HEADING <H1> displays your text highest<h6> to lowest size<h1>.

There are six levels of heading H1 to H6.

 

3. Name the tag use to change the appearance of the text. Also give its attributes.

Ans: <FONT> this tag is used to change the appearance of the text and the attributes of FONT tag are COLOR, FACE, SIZE

 

D. Long answer type questions

1. What are the characteristics of HTML language?

Ans: CHARATERSTICS OF HTML

1. Easy to understand

2. We can easily design web pages in HTML

3. Graphics sound can be easily inserted

4. HTML is not a case sensitive language

5. HTML is a platform independent language

 

2. Write the basic structure of HTML document.

Ans: HTML document has two sections:

HEAD Section – It contains Title of the document

BODY Section – Where we do most of the work. It includes text, graphics, and other HTML elements

 

3. Differentiate between container and empty tag .

Ans: Container tag - a tag that has a opening tag and closing tag.

Examples of container tags are (<div>, <span>, <h1> to <h6>, <p>, <em>, <strong>, and many more.)

The purpose of a container tag is to “contain” content inside the opening tag and closing tag.

The structure of a container tag goes as follows (<opening tag> insert content <closing tag>) for example (<h1> Hello World! </h1>).

Empty Tag - a tag that has a opening tag but no closing tag.

Examples of empty tags are (<br>, <img>)

The purpose of an empty tag is not necessarily to “contain” content but rather “insert” content like images, and line breaks. The structure of a container tag goes as follows (<opening tag>).

 

 

4. Expand the terms

a. <B>

Ans: Defines Bold text

b. <BR>

Ans: Inserts a single line break

 c. <HTML>

Ans: Defines an HTML Document

d. <U>

Ans: Defines Underlined text