ISRO CS 2011

Question 21

What is the meaning of RD\'signal in Intel 8151 A?

• Read (when it is low)
• Read (when it is high)
• Write (when it is low)
• Read and Write (when it is high)

Question 22

If the page size in a 32-bit machine is 4K bytes then the size of page table is

• 1 M bytes
• 2 M bytes
• 4 M bytes
• 4 K bytes

Question 23

A processor takes 12 cycles to complete an instruction I. The corresponding pipelined processor uses 6 stages with the execution times of 3, 2, 5, 4, 6 and 2 cycles respectively. What is the asymptotic speedup assuming that a very large number of instructions are to be executed?

• 1.83
• 2
• 3
• 6

Question 24

The in-order traversal of a tree resulted in FBGADCE. Then the pre-order traversal of that tree would result in

• FGBDECA
• ABFGCDE
• BFGCDEA
• AFGBDEC

Question 25

Which one of the following is true?

• R ∩ S = (R ∪ S) − [(R − S) ∪ (S − R)]
• R ∪ S = (R ∩ S) − [(R − S) ∪ (S − R)]
• R ∩ S = (R ∪ S) − [(R − S) ∩ (S − R)]
• R ∩ S = (R ∪ S) ∪ (R − S)

Question 26

The above figure represents which one of the following UML diagram for a single send session of an online chat system?

• Package diagram
• Activity diagram
• Class diagram
• Sequence diagram

Question 27

Which normal form is based on the concept of \'full functional dependency\'?

• First Normal Form
• Second Normal Form
• Third Normal Form
• Fourth Normal Form

Question 28

In Boolean algebra, rule (X+Y)(X+Z) =

• Y+XZ
• X+YZ
• XY+Z
• XZ+Y

Question 29

How many 3-to-8 line decoders with an enable input are needed to construct a 6-to-64 line decoder without using any other logic gates?

• 7
• 8
• 9
• 10

Question 30

In which layer of network architecture, the secured socket layer (SSL) is used?

• physical layer
  

• session layer
  

• application layer
  

• presentation layer