ISRO CS 2014

Question 21

Which of the following is not a maturity level as per Capability Maturity Model?

• Initial
• Measurable
• Repeatable
• Optimized

Question 22

Consider the following sequential circuit What are the values of Q₀and Q₁ after 4 clock cycles if the initial values are 00 ?

• 11

• 01

• 10

• 00

Question 23

Consider the schema R(A, B, C, D) and the functional dependencies A->B and C->D. If the decomposition is made as R1(A,B) and R2(C,D), then which of the following is TRUE?

• Preserves dependency but cannot perform lossless join
• Preserves dependency and performs lossless join
• Does not perform dependency and cannot perform lossless join
• Does not preserve dependency but perform lossless join

Question 24

The test suite (set of test input) used to perform unit testing on module could cover 70% of the code. What is the reliability of the module if the probability of success is 0.95 during testing?

• 0.665 to 0.95
• At the most 0.665
• At the most 0.95
• At least 0.665

Question 25

In a system an RSA algorithm with p=5 and q=11, is implemented for data security. What is the value of the decryption key if the value of the encryption key is 27?

• 3
• 7
• 27
• 40

Question 26

Suppose you want to build a memory with 4 byte words with a capacity of 2²¹bits. What is type of decoder required if the memory is built using 2K x 8 RAM chips?

• 5 to 32
• 6 to 64
• 4 to 64
• 7 to 128

Question 27

The output of a tristate buffer when the enable input in 0 is

• Always 0
• Always 1
• Retains the last value when enable input was high
• Disconnected state

Question 28

How many different BCD numbers can be stored in 12 switches? (Assume two position or on-off switches)

• 2¹²
• 2¹²-1
• 10¹²
• 10³

Question 29

Suppose there are 11 items in sorted order in an array. How many searches are required on the average, if binary search is employed and all searches are successful in finding the item?

• 3.00

• 3.46

• 2.81

• 3.33

Question 30

Every time the attribute A appears, it is matched with the same value of attribute B but not the same value of attribute C. Which of the following is true?

• A-> (B,C)
• A ->B, A->>C
• A->B, C->>A
• A->>B, B->C