CBSE Class 12 Computer and Communication Technology Solved Question Paper 2017

Find and write the output of the following python code:

class INVENTORY:
def __init__(self,C=101,N='Pad',Q=100): #constructor
     self.Code=C
     self.IName=N
     self.Qty=int(Q);
def Procure(self,Q):
     self.Qty = self.Qty + Q
def Issue(self,Q):
     self.Qty -= Q
def Status(self):
print self.Code,':',self.IName,'#',self.Qty
I1=INVENTORY()
I2=INVENTORY(105,'Thumb Pin',50)
I3=INVENTORY(102,'U Clip')
I1.Procure(25)
I2.Issue(15)
I3.Procure(50)
I1.Status()
I3.Status()
I2.Status()

Which of the following can be used as a valid variable identifier(s) in Python?

• 4thSum

• Total

• Number#

• Number#

List four characteristics of Object Oriented programming.

Ms. Raveena Sen is an IT expert and a freelancer. She recently used her skills to access the Admin password for the network server of Super Dooper Technology Ltd. and provided confidential data of the organization to its CEO, informing him about the vulnerability of their network security. Out of the following options (i) to (iv), which one most appropriately defines Ms.Sen?
Justify the reason for your chosen option:

• Hacker

• Cracker

• Operator

• Operator

Rewrite the following code in python after removing all syntax error(s). Underline each correction done in the code.

STRING= ''WELCOME
NOTE''
for S in range[0,8]:
print STRING(S)
print S+STRING

class Exam:
	Regno=1
	Marks=75
	def __init__(self,r,m): #function 1
		self.Regno=r
		self.Marks=m
	def Assign(self,r,m): #function 2
		Regno = r
		Marks = m
	def Check(self): #function 3
		print self.Regno, self.Marks
		print Regno, Marks

(i) In the above class definition, both the functions - function 1 as well as function 2 have similar definition. How are they different in execution?

(ii) Write statements to execute function 1 and function 2.

What is the possible outcome(s) executed from the following code? Also, specify the maximum and minimum values that can be assigned to variable N.

import random
NAV = ['LEFT','FRONT','RIGHT','BACK];
NUM = random.randint(1,3)
NAVG = ''
for C in range(NUM,1,-1):
	NAVG = NAVG+NAV[I]
	print NAVG

Find and write the output of the following python code:

TXT = ['20','50','30','40']
CNT = 3
TOTAL = 0
for C in [7,5,4,6]:
	T = TXT[CNT]
	TOTAL = float (T) + C
	print

Name the Python Library modules which need to be imported to invoke the following functions
(i) floor()
(ii) randint()

Janish Khanna used a pen drive to copy files from his friend’s laptop to his office computer. Soon his office 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:

• Computer Virus

• Spam Mail

• Computer Bacteria

• Computer Bacteria