Class 12 Internet and Web Mock Test (CBSE)

Topics in Internet and Web

• Computer networks
• Types of networks
• Network devices
• Network topologies
• Introduction to Internet
• Applications of Internet
• World Wide Web
• Websites and web pages
• Web servers and hosting
• Browsers, add-ons and plug-ins
• Cookies

Internet and Web practice questions with answers

1. Q1Multiple choice·1 mark
   A web hosting plan gives a website 20 GB of storage space on the hosting server. The website's files occupy 850 MB. Take 1 GB = 1000 MB. How much storage space is still free?

   1. (a)$18.15$ GB
   2. (b)$19.15$ GB
   3. (c)$19.85$ GB
   4. (d)$1.15$ GB
   Show answer and step marks

   1. Correct option: (b) $19.15$ GB. Storage is $20 \text{ GB} = 20000 \text{ MB}$, so free space $= 20000 - 850 = 19150 \text{ MB} = 19.15 \text{ GB}$.+1

   Answer: (b)
2. Q2Multiple choice·1 mark
   Which of the following network devices operates at the Data Link layer and forwards data packets based on MAC addresses?

   1. (a)Hub
   2. (b)Router
   3. (c)Switch
   4. (d)Repeater
   Show answer and step marks

   1. Correct option: (c)+1

   Answer: (c)
3. Q3Multiple choice·1 mark
   A student adds an item to the cart of an online shopping website, closes the browser and reopens the same website the next day. The item is still in the cart. Which of the following is the most likely reason?

   1. (a)The web server stored the student's IP address in the browser history.
   2. (b)The browser cache keeps the complete cart page permanently.
   3. (c)The internet service provider keeps a copy of every page visited.
   4. (d)The website saved a small text file on the student's computer that the browser sends back on the next visit.
   Show answer and step marks

   1. Correct option: (d) The website saved a small text file on the student's computer that the browser sends back on the next visit.+1

   Answer: (d)
4. Q4Short answer·2 marks
   Distinguish between a LAN and a WAN on the basis of the geographical area each one covers.
   Show answer and step marks

   1. LAN covers a small area such as a single room, an office, a school or a campus.+1
   2. WAN covers a very large area such as a city, a country or the whole world, and joins networks over long-distance communication links.+1

   Answer: A LAN covers a small area such as a room, office or campus, whereas a WAN covers a very large area such as a country or the whole world.
5. Q5Short answer·2 marks
   A clinic in Pune wants its patients to book appointments from home and to receive their test reports at their own email addresses. (a) Name the Internet application that lets patients book appointments through the clinic's web page. [1] (b) Name the Internet application used to deliver a test report to a patient's email address. [1]
   Show answer and step marks

   1. (a) Web-based service (World Wide Web) through the clinic's website for online appointment booking+1
   2. (b) Electronic mail (email) used to send the report as an attachment+1

   Answer: (a) Online appointment booking through the World Wide Web (clinic's website); (b) Email
6. Q6Short answer·3 marks
   Four computers in a computer lab are each connected by a separate cable to one central switch, and all data between the computers passes through that switch. (a) Identify the network topology formed by this arrangement. [1] (b) Write one advantage of this topology over a bus topology. [1] (c) Write one disadvantage of this topology. [1]
   Show answer and step marks

   1. (a) The arrangement is a star topology, in which every device is connected to a central node (switch).+1
   2. (b) A fault in one computer's cable affects only that computer; the other computers keep communicating, unlike a bus where one cable fault can disrupt the whole network.+1
   3. (c) The whole network depends on the central switch, so if the switch fails, all computers lose communication.+1

   Answer: (a) Star topology. (b) A cable fault affects only one computer, not the whole network. (c) Failure of the central switch disconnects all computers.

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