# (Paper) DRDO Sample Questions

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**DRDO Sample Questions**

** 1. If 100ns is Memory Access Time & 125 microsec is 1frame period. The no. of line that can be supported in a Time Divison Switch is**a)125 Lines

b)625 Lines

c)525 Lines

d)465 Lines

**2. The no. of edjes in disjoint Hamilton circuit in a complex graph with 17 edges is**a) 8

b) 9

c) 136

d) 17^2

**3. 15 persons in a club sit every day ina dinner table such that every member has different neighbour. This arrangement will last for how many days.
Assume a system has 16MB cache mean Disk Access Time & cache Access time is 76.5 ns & 1.5 overall mean Access time us 465ms for each tripling the memory the miss rate is halved. The memory required to bring down the mean Access time to 24ns is**a) 16 MB

b) 24 MB

c) 32 MB

d) 48 MB

**4.Average transfer speed of a i/p serial line is minimum 25,000 Bytes & maximum 60000 Bytes. Polling Strategy adopted takes 4microsec(whether there is any i/p byte or not). It is assured that byte that retrived from controller before next byte arrives are lost. Then the maximum safe polling interveal is**a) 12

b) 12.33

c) 12.67

d) 32

**5. A harddisk has a rotation speed of 4500RPM. then the latency time is**a) .4

b) .6

c) .7

d) .9

**6.Suppose all elements above the principal diagonal od n x n matix A are zero. If non zero elements of the lower triangular Matrix is stored in an array B with A[1][1] stored at**B[1]. The addressing formula to the nonzero element in A[i][j]=?

a) A[i][j]

b) i(j-1)/2 +i

c) j(i-1)/2 +i

d) i(i-1)/2 +j

**7.The minumum number of comparisons requied to find the second smallest element in a 1000 element array is**a) 1008

b) 1010

c) 1999

d) 2000

**8.The internal path length of a Bonary Tree with 10nodes is 25. The external path length is**a) 25

b) 35

c) 40

d) 45

**9.Average No. of Comparisons required to sort 3 elements is**a) 2

b) 2.33

c) 2.67

d) 3

**10.In a switch the mean arrival rate of packets is 800 Packets/sec and the the mean service rate is 925 Packets/sec**a) .008 Sec

b) .08 sec

c) .8 sec

d) 1.1 sec

**11. What is Interface Control Information?**

**12. The minumum no. of Multiplications needed to compute x^768 is**a) 9

b) 10

c) 425

d) 767

**13. Find values for a,b,c,d**c 1 1 1

0 a 1 b

_______

1 0 d 0

(967)basex = 321base9

PART II Genreal 50 General Non-Technical[4 Options]

**14. The area of red planet where the Mars Rover Landed? In Which Day world Telecom Day Celebrated? Laser is used for what?**a) Treatment of Cancer

b) Treatment of Eyes

c) Treatment of Heart

d) Treatment of Kidney

**15.Which country is not a Member of SAARC**a) Bangladesh

b) Myanmar

c) Maldives

d) Nepal

The New Biotechnology Software intorduced by TCS is?

**16.The New Biotechnology Software intorduced by TCS is? What is Wi Fi?**

**17.Which is the fastest Cruise Missile?**