Web Applications and Security Class 10 Information Technology Important Questions

Important Questions Class 10

Please refer to Web Applications and Security Class 10 Information Technology Important Questions given below. These solved questions for Web Applications and Security have been prepared based on the latest CBSE, NCERT and KVS syllabus and books issued for the current academic year. We have provided important examination questions for Class 10 Information Technology all chapters.

Class 10 Information Technology Web Applications and Security Important Questions

Short Answer Type Questions :

Question. Write two advantages of using Internet.
Ans. Advantages of using Internet are as follows:
(i) It is used for communication, entertainment, searching information and for providing many types of services.
(ii) It provides the facility of E-mail.

Question. Name two web browsers of Internet.
Ans. Internet Explorer and Google Chrome are the two web browsers of Internet.

Question. How can you prepare for emergencies?
Ans. To prepare for emergencies, follow the given guidelines
(i) Follow workspace protocol and guidelines to ensure safety and health; know and understand rules and procedures concerning fire emergencies.
(ii) Ensure that smoke alarms and sprinkler systems are installed, working properly and are not blocked.
(iii) Conduct regular fire drills.

Question. Name any five DSL broadband service providers in India.
Ans. BSNL, Airtel, Reliance, MTNL and Tata Indicom are the five DSL broadband service providers in India.

Question. How does dry chemical fire extinguisher work?
Ans. Dry chemical fire extinguishers extinguish the fire primarily by interrupting the chemical reaction of the fire triangle. Today’s most widely used type of fire extinguisher is the multipurpose dry chemical that is effective on Class A, B and C fires. This agent also works by creating a barrier between the oxygen element and the fuel element on Class A fires.
Ordinary dry chemical is for Class B and C fires only. It is important to use the correct extinguisher for the type of fuel. Using the incorrect agent can allow the fire to re-ignite after apparently being extinguished successfully.

Question. What is URL? Can we use URL to access a web page? How?
Ans. URL means Uniform Resource Locator. It is a unique address of a web page on the Internet. It specifies the Internet address of a file stored on a host computer connected to the Internet. Yes, as a location on a web server, which is called a website and each website has a unique address known as URL. So, an URL can be used to access a web page.

Question. Write the name of any two Internet Service Provider (ISP) in India.
Ans. MTNL and Airtel are the two Internet Service Provider (ISP) in India.

Question. How many techniques are used for transmitting data across network?
Ans. There are three techniques used for transmitting data across network : circuit switching, packet switching and message switching.

Question. Explain the LAN and WAN.
Ans. A Local Area Network (LAN) is a computer network covering a small geographical area like a home, office or small group of buildings such as buildings in a school. Computers connected to a LAN can share information and peripheral equipments.
A Wide Area Network (WAN) is used to connect LANs and other types of network together, so that users and computers in one location can communicate with users and computers in other locations.

Question. Name any two ways of wireless connections of Internet. Ramya wants to connect all the computers of her office wirelessly in order to avoid uncoordinated cables. Which wireless technology would be best suitable for her office?
Ans. Wi-Fi and WiMax are the two ways of wireless connections of Internet. Wi-Fi technology would be best suitable for her office to avoid cabling. Because, it allows high speed Internet connections without the use of cables or wires.

Question. How does water and foam fire extinguisher work?
Ans. Water and foam fire extinguishers extinguish the fire by taking the heat element away from the fire. Water extinguishers are for class A fires. Class A fires involve ordinary combustile materials, such as cloth, wood, paper, rubber and many plastics.

Question. List any five application based instant messaging software. 
Ans. Whatsapp, Viber, Skype, WeChat, Google Talk

Question. What are the advantages of having safer and healthy workplace?
Ans. The advantages of having safer and healthy workplaces are as follows:
(i) They have fewer days lost, therefore they have higher productivity.
(ii) They can increase efficiency and quality, because they have healthier workplace.

Question. What is the main purpose of switch?
Ans. A switch is a hardware device which is used to connect devices or segment of network with smaller subsets of LAN segments.

Question. Write the full form of following terms.
(i) WiMAX
(ii) BPL
Ans. (i) WiMAX Worldwide Interoperability for Microwave Access.
(ii) BPL Broadband over Power Line

Question. Write any two key features of an Instant Messaging (IM).
Ans. Key features of an Instant Messaging are :
(i) Video calling
(ii) Language translation

Question. What are physical hazards?
Ans. Physical hazards can be any factors within the environment that can harm the body without necessarily touching it. It can be caused by radiation (microwave, radio wave), pressure extremes (high pressure or vacuum), constant loud noise, high exposure to sunlight/ultraviolet rays,temperature extremes (hot and cold), etc.

Question. Who is blogger? List any five websites that provide blog service.
Ans. A person who writes a blog or a weblog is known as blogger. Blogging is the act of posting content on a blog. 
Any five websites that provide blog service listed below
(i) Joomla
(ii) Blogger
(iii) Word Press.com
(iv) Tumblr
(v) Drupal

Question. Explain the purpose of a blog.
Ans. The main purpose of blog is to convey messages about events, announcements, need, review, etc. Blogs are usually managed using a web browser and this requires active internet connection.

Question. Mr. Lal owns a factory which manufactures automobile spare parts. Suggest him the advantages of having a web page for his factory.
Ans. The web page provides the information to the clients about his factory of spare parts. Moreover, he can receive the order on the Internet from the clients using the web page.

Question. Explain any three rules that companies follows in terms of fire safety.
Ans. Any four rules that companies follows in terms of fire safety are as follows
(i) All fire alarms systems are working.
(ii) All fire escapes can be opened easily.
(iii) Automatic fire doors close correctly.

Question. Laluma Chakradhar wants a broadband connection to access her mails and stay informed about the latest happening in the field of Biotechnology. Can you suggest two Internet Service Providers (ISPs) of India to be approached for the same?
Ans. BSNL and Airtel

Question. What can a user do with WWW? Name any two major services provided by Internet.
Ans. Using WWW (World Wide Web), a user can download files, listen to music, view video files and jump to other documents or websites by using hypertext links. E-mail and WWW are the two major services provided by Internet.

Question. Explain three conditions following which evacuation is done.
Ans. Any three conditions following which evacuation is done are
♦ In the event of a fire, an immediate evacuation is to be followed by the employees.
♦ In case of tornadoes, earthquakes, floods or explosions, the type of building can be a major factor in taking decision to follow the evacuation plan.
♦ If a designated person within your workplace, under some circumstances had taken the decision to evacuate or shut down operations.

Question. Explain the concept ‘Watch Your waist and weight; to maintain a healthy body at workplace’.
Ans. The explanation of the concept ‘Watch Your waist and weight; to maintain a healthy body at workplace’ is
(i) Encourage the use of weighing scales, measuring tapes and devices to monitor individual physical  fitness.
(ii) Place weighing scales, measurement tapes and body mass index charts in strategic locations.

Question. What are slipping and tripping hazards?
Ans. Slipping hazards are causes through spills or trips such as cords running across the floor or water spilled on the floor. Tripping hazards are caused through falls such as working from heights, including ladders, scaffolds, roofs, etc.

Question. Give the names of models of computer networking.
Ans. There are mainly two models of computer networking as follows:
(i) Peer-to-Peer network
(ii) Client-server network

Question. What is the use of repeater in a network?
Ans. In a network, repeater receives a weak signal coming from a source and amplifies it to its original strength and then again forwards it to the destination. Basically, repeaters are used in a network so that a signal can travel longer distance.

Question. Identify the following devices.
(i) A device that is used to connect different types of networks. It performs the necessary translation, so that the connected networks can communicate properly.
(ii) A device that converts data from digital bit stream into an analog signal and vice-versa.
Ans. (i) Router
(ii) Modem

Question. What are biological hazards?
Ans. Biological hazards are caused by bacteria, viruses, insects, plants, birds, animals and humans, etc. It includes exposure to harm or disease associated with working with animals, people or infectious plant materials. Workplaces like schools, day care, colleges, hospitals, laboratories or various outdoor establishments are more exposed to such type of biological hazards.

Question. Identify web addresses and E-mail addresses from the following.
(i) www.scrapbook.com
(ii) aba@scrapbook.com
(iii) www.countrywide.co.in
(iv) 123@hotshot.co.in
Ans. Key features of an Instant Messaging are:
(i) and 
(ii) and
(iii) are web addresses.
(iv) are E-mail addresses.

Question. What is the advantage of mesh topology?
Ans. In mesh topology, each node is connected to more than one node, so that it provides alternative route. In case, if the host is either down or busy.

Question. When the computer network uses telephone lines as communication channel, then MODEM is used as a data communication device. Now, explain the working of MODEM.
Ans. MODEM performs the task of modulation at sender’s site and demodulation at the receiver’s site. Basically, our computer generates data in the form of digital signals which need to be forwarded to the receiver through telephone lines. Since, telephone lines can carry only analog signals. So, digital signals need to be converted to analog signals at sender’s site this is called modulation. At receiver’s site, again analog signals should be converted back to the original digital signals, then this is called demodulation.

Question. How does carbon dioxide fire extinguisher work?
Ans. Carbon Dioxide fire extinguishers extinguish fire by taking away the oxygen element of the fire triangle and also be removing the heat with a very cold discharge. Carbon dioxide can be used on Class B and C fires. They are usually ineffective on Class A fires.

Question. What are the main types of computer networks?
Ans. Following are the three main types of computer networks, based upon the geographical area as follows:
(i) Local Area Network (LAN)
(ii) Metropolitan Area Network (MAN)
(iii) Wide Area Network (WAN)

Question. Difference between circuit switching and packet switching.
Ans. Differences between circuit switching and packet switching are as follows 

Web Applications and Security Class 10 Information Technology Important Questions

Question. How does wet chemical fire extinguisher work?
Ans. Wet chemical is a new agent that extinguishes the fire by removing the heat of the fire triangle and prevents e-ignition by creating a barrier between the oxygen and fuel elements.
Wet chemical of Class K extinguishers were developed for modem, high efficiency deep fat fryers in commercial cooking operations. Some may also be used on Class. A fires in commercial kitchens.

Question. What is the definition of networking? 
Ans. A computer networking is the practice for exchanging information/services between two or more computers together for the purpose of sharing data.

Question. Elucidate the following terms.
(i) PAN
(ii) WiMAX
(iii) Satellite
Ans. (i) PAN It stands for Personal Area Network. It is a computer network used for communication among computer and different technological devices close to it.
(ii) WiMAX It stands for Worldwide Interoperability for Microwave Access. It is a wireless transmission of data using a variety of transmission modes.
(iii) Satellite which are orbiting around the Earth, rovide necessary links for telephone and television service.

Question. Write down any three points of differences between LAN, MAN and WAN.
Ans. Three major points of differences among LAN, MAN and WAN are as follows
(i) In terms of geographical area WAN covers the area across the continents, MAN covers area within a city while LAN covers area within a building.
(ii) In terms of distance The approximate distance covered by WAN is unlimited, of MAN is upto 160 km while that of LAN is upto 5 km.
(iii) In terms of speed The speed with which the data travels in case of WAN is 10 to 38.4 Kbps, 183 to 7.2 Mbps, while that of MAN is 11 to 100 Mbps and of LAN is 11 to 54 Mbps.

Question. Name the term defined by given below statement: ‘‘A group of computers connected to each other by a ink.’’
Ans. Computer network is defined as a group of computers connected to each other by a link that allows sharing of resources and information.

Question. Why do we use Instant Messaging?
Ans. Instant messaging is a set of communication technologies used for text based communication  between two or more participants over the Internet or other types of networks. Many instant messaging  services offer video calling features, Voice over Internet Protocol (VoIP) and web conferencing services. Web conferencing services can integrate both video calling and instant messaging abilities.

Long Answer Type Questions :

Question. How does keeping a watch at the stress level can help to sustain in the workplace?
Ans. (i) Introduce stress consultation and counselling services for staff.
(ii) Create a physical space for reflection and thinking.
(iii) Create a system to reinforce a healthy, positive and balanced workplace.
(iv) Promote de-stressing (relaxation) exercise, e.g. yoga, tai-chi, deep breathing, meditation, etc.
(v) Create time and space for recreational activities at work.
(vi) Build social support groups.

Question. What are some examples of workplace hazards?
Ans. Some examples of workplace hazards are as follows:
(i) Damaged electrical outlets, cords, cables, etc.
(ii) Overloaded outlets and circuits.
(iii) Combustible substances in unsecured locations, (including excessive trash and recycling) – keep these  far from electrical equipment.
(iv) Fire exit obstacles.
Keep workspace and equipment clean, dry and well-ventilated and especially clean of oil and dust.

Question. Explain any five precautions at workplace.
Ans. Any five precautions at workplace are as follows:
(i) First aid boxes at various places in the office.
(ii) Trained first aiders – on all floors of a building.
(iii) Knowledge of the nearest casualty department or local hospital.
(iv) Access to call for an ambulance.
(v) Ability to provide immediate assistance to casualties with illnesses or injuries caused by a specific hazard at work.

Question. What are the preventive measures to avoid cyberbullying?
Ans. Preventive measures to be taken to avoid cyberbullying are given as
(i) Check your privacy settings in social media like Facebook, so that your friends can only view your  profile and posts.
(ii) You should think twice while posting any message, as internet is public.
(iii) Always keep your personal information like name, address, phone number, school name, credit card or debit card credentials, password, etc., private.

Question. Explain some of the actions that are used in the event of fire.
Ans. Some actions that should be used in the event of a fire are as follows:
(i) Close all the windows, doors and switch of non-essential services.
(ii) Walk to the nearest assembly point.
(iii) Follow the emergency signs.
(iv) Escape routes should be lit by emergency lighting so that people can use them safely if an emergency occurs.
(v) Don’t re-enter the building until permission is given by the person in charge of the evacuation.
(vi) If the fire is small, but only if you are trained to do so use fire extinguishers to attempt to put the fire out.

Question. What is switching? Explain the different types of switching techniques.
Ans. Switching is a technique which is used in large networks. It is a hardware or software device which  creates a connection between one or more computers.
Switching is basically of three types which are as follows
(i) Circuit Switching In this type of technique, an end-to-end path is created before sending the data  (dedicated channel, i.e. Circuit). The data is transferred using physical connection which is set upto between sender and receiver.
(ii) Message Switching Message switching is based on the transfer of block of messages from sender to  receiver. Firstly, the address of destination is attached in a message. When a sender has a block of data to be sent, it is stored in the first switching station and then forwarded later. Each block of message is received entirely, checked for errors and then retransmitted.
There is no need for physical connection between packet which has header that contains source and  destination addresses information acknowledgement and error bits.
(iii) Packet Switching In packet-based networks, the message gets broken into small data packets. These packets are sent out from the computer and they travel around the network seeking out the most  efficient route to travel as circuits become available. 

Question. Explain how to apply roller bandage to a wound.
Ans. To apply a roller bandage to a wound, follow these steps:
(i) Hold the injured area steady.
(ii) Gently but firmly wrap the bandage around the injured limb or body part, covering the wound.
(iii) Fasten the bandage with sticky tape or safety pins.
(iv) The bandage should be wrapped firmly enough to stay put, but not so tightly that it cuts off blood flow.
To check the circulation in a bandaged limb, pinch one of the person’s fingernails or toenails until the color drains from the nail. If color do not return within two seconds of letting go, the bandage is too tight and needs to be adjusted.

Question. What is a workplace emergency?
Ans. A workplace emergency is an unforeseen situation that threatens your employees, customers or the  public;disrupts or shuts down the workplace operations; or causes physical or environmental damage.
Emergencies may be natural or manmade and include the following
♦ Floods
♦ Hurricanes
♦ Fires
♦ Tornadoes
♦ Toxic gas releases
♦ Chemical spills
♦ Radiological accidents
♦ Explosions
♦ Civil disturbances
♦ Workplace violence resulting in bodily harm and trauma

Question. Why is Internet called ‘Network of Networks’?
Ans. Internet is called ‘Network of Networks’ because it is global network of computers that are linked together by cables and telephone lines making communication possible among them. It can be defined as a global network over a million of smaller heterogeneous computer networks.
The network which consists of thousands of networks spanning the entire globe is known as Internet. The Internet is a world wide collection of networked computers, which are able to exchange information with each other very quickly. Mostly people use the Internet in two ways, E-mail and World Wide Web. In Internet, most computers are not connected directly, they are connected to smaller networks, which in turn are connected through gateways to the Internet backbone. A gateway is a device that connects dissimilar networks. A backbone is central interconnecting structure – that connects one or more  networks.

Question. What is a topology? Explain the types of topologies.
Ans. Topology refers to the topology of a network. Topology refers to the way in which a network is laid out physically. Topology is the geometric representation of the relationship of all the nodes to the one another. There are mainly four types of topologies as discussed below
(i) Mesh Topology In mesh topology, each computer is connected to every other computer to provide an  alternate path for transferring data.
(ii) Star Topology In a star topology, each computer is connected to a centrally located device called hub.
(iii) Bus Topology In a bus topology, one long cable acts as a backbone to link all the computers in a network.
(iv) Ring Topology In a ring topology, each computer is connected with the two computers on either side of it.

Question. Write any five precautions that are to be taken at the workplace.
Ans. Any five precautions that are to be taken of at the workplace are as follows:
(i) Take responsibility and clean up, if you made a mess.
(ii) Clean and organise your workspace.
(iii) Ensure a clear and easy route to emergency exits and equipment.
(iv) Be alert and awake on the job.
(v) Be attentive at all times to your work surroundings.

Question. Give an example of E-mail address and explain each part of it.
Ans. The example of an E-mail address is abc@gmail.com. The format of E-mail address is username@-hostname or domain name. So, as per the above example of E-mail address. abc is the username and gmail.com is the name of hosting server or host (domain) name. Thus, we can say that, E-mail address has two parts separated by ‘@’ symbol.
(i) Username On the left side of separator @ is the user name. A user name cannot have blanks. 
(ii) Domain Name for the Host Server The portion to the right of @ identifies the server or host network  that services your E-mail. It is also known as E-mail server.

Question. Explain any five moves that an employee can do on hearing the fire alarm.
Ans. On hearing the fire alarm, the employees should
(i) Close all the windows, doors and switch of non-essential services.
(ii) Walk to the nearest assembly point.
(iii) Follow the emergency signs.
(iv) Escape routes should be lit by emergency lighting, so that people can use them safely if an emergency occurs.
(v) Don’t re-enter the building until permission is given by the person in charge of the evacuation.

Question. What is the first aid you should apply for burns?
Ans. If you suspect that someone has a third-degree bum, call the hospital for ambulance. Seek professional medical care for any bums that
(i) Cover a large area of skin.
(ii) Are located on the person’s face, groin, buttocks, hands or feet.
(iii) Have been caught by contact with chemicals or electricity.
To treat a minor burn, run cool water over the affected area for up to 15 min. If that’s not possible, apply a cool compress to the area instead. Avoid applying ice to burned tissue, it can cause more damage.
Over-the-counter pain relievers can help relieve pain.

Question. Explain the concept ‘Watch Your Plate’ to maintain a healthy body at workplace.
Ans. The explanation of the concept ‘Watch Your Plate’ to maintain a healthy body at workplace is 
(i) Promote consumption of a variety of foods and awareness regarding their serving sizes.
(ii) Encourage conscious calorie reduction.
(iii) Make available fresh vegetables and fruits in the cafeteria.
(iv) Make clean water the default drink in the workplace and at meetings and discourage sugar-sweetened beverages.
(v) Discourage consumption of foods high in salt, sugar and saturated and transfats.

Question. What do you mean by Instant Messaging? Also, explain one Instant Messaging software.
Ans. Instant Messaging (IM), formof text-based communication in which two persons participate in a  single conversation over their computers or mobile devices within an Internet based chatroom.
Various softwares provide instant messaging services as Whatsapp, Google Talk, Skype, Meebo, eBuddy, etc. Google Talk It is an instant messaging and VoIP service developed by Google. This client lets you to log in to the service to chat and hold video-conferences with your friends from the windows desktop. Google Talk is more than just a regular chat, you can also make free PC to PC VoIP calls and even leave voice messages like an answering machine. If your contacts are also using the Google Hangouts client, you can send files too.
Google Hangouts was integrated into G-mail where users could send instant messages to other G-mail  users. As it worked within a browser, the Google Talk client did not need to be downloaded to send instant messages to G-mail users.

Question. Explain some of the ways to remove workplace hazards.
Ans. Some of the ways to eliminate workplace hazards are as follows
(i) Remove damaged electrical outlets, cords, cables, etc.
(ii) Check overloaded outlets and circuits.
(iii) Combustible substances in unsecured locations, (including excessive trash and recycling) – keep these far from electrical equipment.
(iv) Clear all fire exit obstacles.
(v) Keep workspace and equipment clean, dry and well-ventilated and especially clean of oil and dust.
(vi) Follow workspace protocol and guidelines to ensure safety and health; know and understand rules and procedures concerning fire emergencies.
(vii) Ensure that smoke alarms and sprinkler systems are installed, working properly and are not blocked.
(viii) Conduct regular fire drills.