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CS501 Final Paper 23 February 2013

Total Questions: 52
Total Marks: 80
Total MCQs: 40 (Each of 1 Mark)
Total Short Questions: 4 (Each of 2 Mark)
Total Short Questions: 4 (Each of 3 Mark)
Total Long Questions: 4 (Each of 5 Mark)
Subjective
What do you know about PROM? Explain.(2 marks )
What do you understand by the assembler of the assembly language? (2 marks )
Consider a LAN using bus topology if we replace the bus with a switch, what change occurs in such a configuration. (2 marks )
Name the two classes of instruction set architecture. (2 marks )
Find the average relational latency if the disk octet 15000rpm. (3 marks )
How shift instructions are useful? When do we use them? (3 marks )
How the exception may be generated? Difference between external and internal exception
Conceder the following point number

Find out the sign, significant and exponent from the above example. (3 marks )
Does DMA affect the relationship between the memory system and the CPU? Explain (5 marks )
Suppose the I/O system with a single disk get an average of 200 I/O request/second assume that the average time for a disk to service and I/O request is 4ms. What is the utilization of I/O system? (5marks )
Consider a 4 way set associative cash with 256 K capacity and 32 byte line. (5 marks )
a) How many sets are there in cache?
b) How many bits of address required to select a set in cache?



Another Paper:

50% MCQs was from previous paper, many of the MCQs was new, reshuffled.

In ____ technique memory is divided into segments of variable sizes depending upon the requirements.
 Paging
 Segmentation (Page 365)
 Fragmentation
 None of the given
Question No: 20 ( Marks: 1 ) – Please choose one For a request of data if the requested data is not present in the cache, it is called a _____
 Cache Miss (Page 358)
 Spatial Locality
 Temporal Locality
 Cache Hit

A _________ provides four functions: Select, DataIn, DataOut and Read/Write.
►ALU
►Bus
►Register
►Memory Cell (Page 351)

Question No: 4 ( Marks: 3 ) – Please choose one
The average rotational latency if the disk rotated at 20,000rpm is _____________
►0.5 ms ►3.5 ms ►2.5 ms ►1.5 ms (Page 324)z
 


 
A hard disk with 5 platters has 1024 tracks per platter, 512 sectors per track and 512 bytes/sector. What is the total capacity of the disk?
►1.5 GB ►1 GB (Page 324) ►2 GB ►3 GB

Some of subjective questions
What are the functions of memory cell??
What do u mean by RAID ?
How shift instructions are useful? When do we use them? (3 marks )
Suppose the I/O system with a single disk get an average of 200 I/O request/second assume that the average time for a disk to service and I/O request is 4ms. What is the utilization of I/O system? (5marks )
Consider a 4 way set-associative cache with 256KB capacity and 32 byte lines a) How many sets are there in the cache? b) How many bits of address are required to select a set in cache?
How many platters are required for a 40GB disk if there are 1024 bytes/sector, 2048 sectors per track and 4096 tracks per platter?

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