Indian Space Research Organisation Placement Paper

Company: Indian Space Research Organisation

6. Consider a disk pack with 16 surfaces, 128 tracks per surface and 256 sectors per track. 512 bytes of data are stores in a bit serial manner in a sector. The capacity of the disk pack and the number of bits required to specify a particular sector in the disk are respectively
a 256 Mbyte, 19 bits
b 256 Mbyte, 28 bits
c 512 Mbyte, 20 bits
d 64 Gbyte, 28 bits
7. Consider a pipelined processor with the following four stages
IF: Instruction Fetch
ID: Instruction Decode and Operand Fetch
EX: Execute WB: Write Back
The IF, ID and WB stages take one clock cycle each to complete the operation. The ADD and SUB instructions need 1 clock cycle and the MUL instruction need 3 clock cycles in the EX stage. Operand forwarding is used in the pipelined processor. What is the number of clock cycles taken to complete the following sequence of instructions?
ADD R2, R1, RO R2<-R1+RO MUL R4, R3, R2 R4<-R3*R2 SUB R6, R5, R4 R6<-R5-R4 a 7 b 8 c 10 d 14 8. The use of multiple register windows with overlap causes a reduction in the number of memory accesses for . 1.Function locals and parameters 2.Register saves and restores 3.1nstruction fetches a 1 only b 2 only c 3 only d 1,2 and 3

Indian Space Research Organisation Placement Paper

About Indian Space Research Organisation

The Indian Space Research Organisation or is the national space agency of India, headquartered in Bengaluru. It operates under Department of Space which is directly overseen by the Prime Minister of India, while Chairman of ISRO acts as executive of DOS as well..visit offical website of Indian Space Research Organisation for more details.

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