CBSE Class 12 Computer Science Question Paper 2008 (Set 91)

CBSE CLASS XII Questions

• 1.

  Assuming that D1 is a dictionary in Python,

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• 2.

  Write a Python program to accept 10 integers from the user. If the entered number is a three-digit even integer, push it onto a stack. After all inputs are taken, pop all the three-digit even integers from the stack and display them. For example, if the user enters 12, 31, 320, 457, 6, 92, 924, 220, 1, 218, then the stack should contain:

  320, 924, 220, 218

  and the output of the program should be:

  218 220 924 320

  View Solution

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• 3.

  Write a Python function that displays the words in which the lowercase letter 'e' appears at least twice in the text file 'Space.txt'. For example, if the file contains:

  Space exploration has unlocked incredible advancements in technology and science. Since the first moon landing in 1969, space agencies have sent probes to Mars, Jupiter and beyond. The ISS, orbiting Earth at about 400 km, serves as a hub for research. With missions planned for 2030, humanity’s cosmic journey continues!

  Then the function should display:

  incredible advancements science. agencies serves research.

  View Solution

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• 4.

  NextStep is an organization which has a pool of resource persons to conduct training workshops on various topics related to ICT. The data of all its Resource Persons is stored in a binary file RESOURCES.DAT using the following record structure (each record is a tuple):

  (R_ID, R_Name, R_Expertise, Charges)

  where R_ID – Resource Person's ID (An integer); R_Name – Resource Person's Name (A string); R_Expertise – Area of expertise of the Resource Person; Charges – Charges (in rupees) per hour to conduct a workshop.

  For example, a record in the file is:

  (12, 'P. Velusami','Machine Learning',5000)

  In this context, write the following user defined functions in Python:

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• 5.

  List one advantage and one disadvantage of Bus topology.

  View Solution

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• 6.

  Sanjeevani is a big group of educational institutions with its head office in Hyderabad. It is planning to set up a new University in Amritsar. The Amritsar University Campus will have four blocks/buildings – ADMIN, ACADEMIC, HOSTEL, SPORTS. You, as a network expert, need to suggest the best network-related solutions for them to resolve the issues/problems mentioned in points (i) to (v), keeping in mind the distances between various blocks / buildings and other given parameters.

  Block to Block distances (in Mtrs.):

  FROM	TO	DISTANCE
  ADMIN	ACADEMIC	60 M
  ADMIN	HOSTEL	160 M
  ADMIN	SPORTS	80 M
  ACADEMIC	HOSTEL	40 M
  ACADEMIC	SPORTS	120 M
  HOSTEL	SPORTS	150 M

  Distance of Hyderabad Head Office from Amritsar University Campus = 2000 km.

  Number of computers in each block: ADMIN – 25, ACADEMIC – 600, HOSTEL – 120, SPORTS – 50.