Science (English Medium) कक्षा १२ - CBSE Important Questions

Write the full form of the following:

PPP

What is the use of TELNET?

What is the need for Protocols?

In case of ______ switching, before a communication starts, a dedicated path is identified between the sender and the receiver.

Define the term bandwidth with respect to networks.

Janish Khanna used a pen drive to copy files from his friend's laptop to his office computer. Soon his computer started abnormal functioning. Sometimes it would restart by itself and sometimes it would stop different applications running on it. Which of the following options out ·of (i) to (iv), would have caused the malfunctioning of the computer? Justify the reason for your chosen option:

1) Computer Virus

2)Spain Mail

3) Computer Bacteria

4) Trojan Horse

What is Trojan Horse?

MakeInIndia Corporation, a Uttarakhand-based IT training company, is planning to set up training centres in various cities in the next 2 years. Their first campus is coming up in the Kashipur district. At the Kashipur campus, they are planning to have 3 different blocks for App development, Web designing, and Movie editing. Each block has a number of computers, which are required to be connected to a network for communication, data, and resource sharing. As a network consultant of this company, you have to suggest the best network-related solutions for the issues/problems raised in questions keeping in mind the distances between various blocks/locations and other given parameters.

Distance between various blocks/locations:

Number of computers

1. Suggest the most appropriate block/location to house the SERVER in the Kashipur campus (out of the 3 blocks) to get the best and most effective connectivity. Justify your answer.
2. Suggest a device/software be installed in the Kashipur Campus to take care of data security.
3. Suggest the best-wired medium and draw the cable layout (Block to Block) to economically connect various blocks within the Kashipur Campus.
4. Suggest the placement of the following devices with appropriate reasons:
   a. Switch/Hub
   b. Repeater
5. Suggest a protocol that shall be needed to provide a Video Conferencing solution between Kashipur Campus and Mussoorie Campus.

How is http different from https?

The Last Lesson shows that people suddenly realised how precious their language was to them.
Comment.

Do you think that the third leve was a medium of escape for Charley? Why?

“You realise the true value of a thing only on losing it.” Comment on this statement in the light of the story, The Last Lesson.

‘It’s easy to judge others and give advice, but much more difficult to apply it to ourselves.’ Elaborate with reference to the character of Sam in The Third Level.

Read the given extract and answer the questions.

1. List any two sensory details present in this extract.     (1)
2. Why does the protagonist feel anxious about entering the classroom on this particular day?      (1)
   1. The classmates have started the lesson
   2. The teacher is in a bad mood
   3. The classroom is too quiet
   4. The protagonist is running late
3. Complete the sentence appropriately.      (1)
   The phrase "as quiet as Sunday morning" suggests that ______.
4. Pick evidence from the extract that helps one infer that this was not the protagonist’s first time being late to school.       (1)
5. What does the term 'terrible iron ruler' indicate about M. Hamel?      (1)
6. Which of the following headlines best suggests the central idea of the extract?     (1)
   1. The Fears of a Latecomer
   2. The Importance of Punctuality
   3. The Rigidity of the School System
   4. The Anxiety of a Young Student

Answer the following question in about 120-150 words.

In the story, ‘The Third Level’ by Jack Finney, Charley is obsessed with finding the third level. In an attempt to thrash out whether this obsession is a good quality or a harmful one, Charley’s wife expresses her thoughts in a diary entry.

As Louisa, Charley’s wife, write this diary entry. Support your response with reference to the story.

You may begin this way:
I have been married to Charley for a few years now and I have always known him to be an intelligent man with an imaginative mind. However, his recent obsession with finding the Third Level has …

Answer the following question in about 40-50 words.

What extraordinary experience did Charley have when he went to the Grand station?

Answer the following question in about 40-50 words.

What did Charley find in his collection of first-day covers?

Answer the following question in about 40-50 words.

Why did Charley buy old-style currency?

What change did Saheb feel working at the tea shop ?

The Tiger King wanted to protect himself from a tiger attack. Describe the difficulties created by him for  his officials and subjects.