Class 8 computer 💻chapter 1 solutions -- creative kids

                  Class-8 

                 Computer.               

              - edited by 

Madhav bahuguna 

Creative kids

                  Chapter-1 computer Networks

A.     Multiple choice questions 

1. Inter-connection of various devices is called _______________________

a)  chatting.      

b) networking 

c)  internet

 

2. Peripheral devices connected to the network are ____________________.

a)  servers

b)  workstation 

c)  resources  

3. Which of the following is the most expensive network topology ??

a)  star topology 

b)  Mesh topology 

c)  bus topology 

                            Answer 

1. Networking 

2. Resources 

3. Mesh topology 

B.  Fill in the blanks:- 

1. The network can be of any ________________.

2. Your computer is a ______________ on the network. 

3. A ____________ has a port where the network cable plug in.

4. A ____________ is a collection of local area network within a city.

5. A. _______________ topology has minimal line coast. 

   

           

                       Answers 

1. Size

2. Workstation 

3. Switch

4. Man 

5. Star 

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C).   Write the  full forms of the following:- 

1. NIC- network interface controller. 

2. LAN - LOCAL AREA NETWORK. 

3. WAN- WIDE AREA NETWORK.

4. TCP- TRANSMISSION CONTROL PROTOCOL. 

5. IP-  INTERNET PROTOCOL. 

6. PAN  - PERSONAL AREA NETWORK. 

7. MAN- METROPOLITIAN AREA. NETWORK. 

8. HTTP- HYPERTEXT TRANSFER PROTOCOL. 

9. WIFI - wirelss fidelity.

D:- ANSWER THE FOLLOWING QUESTIONS 

Q1. What is node?

Ans. A node is a computer or any other device on a network that communicates with other devices for example every computer connected in a network is a node.

Q2. What is topology?

Ans. The art of connecting different computers in a network is known as topology the term network topology refers to the way in which the nodes of a computer are linked together with determine the data parts which may be used between any pair of nodes in the network some of the basics topologies are 

A. Star

B.  Ring

C. Bus

D. Mesh

Q3. Describe network in your own words.

Ans.  Network is a collection of two or more computers and network is formed with the intuition to sure the available resources and information in the best possible manner.

Q4. Write the three benefits of using a network.

Ans.  Ease of access : the network for most of the information on a central computer storing the information on a central computer makes it easy for everyone to access that information.

2) sharing resources:-  computer connected to a network and share equipments and devices including printer and hard drive this equipments and devices are called resources the ability to share resources reduces the cost of buying hardware.

3)  security :- before accessing information on a network user must enter a username and a password This ensures that only authorised people can use the information stored on the network

Q5. Differentiate between LAN and WAN 

ANS. LAN is the most common type of network file and connect computers and devices located close to one another such as in one building usually this type of network does not consists of more than hundred computers for example computer connected in an office

 WAN  connect LAN and MAN together the networks that make up of wide area network may be located throughout a country or even around the world for example internet and ATM facility

Q6. Write a short note on the hardware parts required to establish a network.

Answers. The hardware parts required to establish a network are- 

1) File server :-file server is a computer that distributes or sirf application programs and data files to the workstation .

2)printer:-  a printer is usually attached to the file server this printer is obtained referred to as a network printer

3) workstation:- your computer is a workstation on the network it is connected to the other computers and devices by communication channel such as cable. 

4)cable:-  it is the physical transmission medium.

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-kanika chauhan 

chauhankanika2008.kc@gmail.com

     

Class 8 Geography chapter - 1 RESOURCES

                                Class-8 

                                Class-8th

                      Geo- chapter 1 (Resources)  

     Geography question and answer 

Q-1. How is the resource different from gift of nature? 

Ans- Nature has a large variety of rocks, soils,  mineral,  natural vegetation and animals. These are called gifts of nature.  

Resource refers to all the materials available in our environment which help us to satisfy our needs. 

Q2. What are the factors that determine the utility of any natural resource? 

Ans. The utility of any natural resources is determined by the following factors :-

• The form in which it occurs 
• The place where it occurs 
• The efforts needed to process it 

The cost of processing it. 

Q3. Human beings are an important resource .justify your answer

Ans. The greatest resource of the Earth is human beings they are capable of making the best use of natural resources through their knowledge skills and Technology only human beings can Discover exploit develop and convert the available of the potential resources into useful products for wealth.

Q4. Define conservation of resources and sustainable resources.

Ans. Using natural resources carefully without wasting them is called conservation of resources when we use natural resources properly for today's need and also conserve them for future generation it is called sustainable development.

Q5. With the help of examples explain how the gifts of nature can become resources with the passage of time.

Ans.  The gifts of nature may become valuable resource with the passage of time for example a waterfall is a gift of nature It has force which can be used to drive a water wheel when a technique developed to harness this force of falling water it become a resource nowadays falling water is used to generate hydroelectricity thus,  this gift of nature has become a valuable resource.

Q6. Classify resources with the examples

Ans. Our earth has enough resources these are the naturally classified into natural resources ,human made resources and human resources.

• Natural resources 

The natural endowment such as Land, air water, soil ,minerals, natural vegetation and fossil fuels are known as Natural Resources.

• Human-made resources 

Human beings are capable of changing Sach natural resources into useful products they use their knowledge and skills to develop technology they convert the natural resources into useful products human beings use natural resources to develop building roads machinery and vehicles these are known as human made resources technology is also an example of human made resources.

• Human resources  

They are capable of making the best use of natural resources through their knowledge skills and Technology education and good health have helped human beings to become a valuable resource.

 

Q7. Distinguish between renewable and nonrenewable resources.

Ans. Renewable resource 

Resources which can be renewed by the reproduction are called renewable resources they can also be renewed by physical mechanical or chemical processes some of these resources are unlimited like solar and wind energy these are called inexhaustible resources. 

Non renewable resource 

The resources which are available in fixed quantity is like mineral and fossil fuels are called non renewable or exhaustible resources these resources once exhausted cannot be replaced.

 

Q8. Why is the conservation of resources essential?

Ans. With the scientific and technological process human beings started using resources at a much larger scale this continuous rise in population also caused an increasing demand for resources this created a situation in which the non renewable resources could be exhausted after sometime therefore a balance between population growth and utilisation of resources is absolutely necessary.

Q9. Why do you think the use of resources should be sustainable?

Ans. The use of resources should be sustainable in the recent times a lot of awareness about Preservation and conservation of resources has been created due to the fear of a situation which may arise as a result of large scale destruction of the natural resources each one of us has to make a sincere effort to save our natural resources for the future of our planet if we use resources too much they will and and if we conserve resources too much then they will become waste.

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-kanika chauhan