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Saturday, March 31, 2012

UGC-NET IN OBJECTIVE MODE FROM JUNE, 2012 ONWARDS
 
1.
The UGC-NET will be conducted in objective mode from June 2012 onwards. The Test will consist of three papers. All the three papers will consist of only objective type questions and will be held on the day of Examination in two separate sessions as under:
 
     
SessionPaperNumber of QuestionsMarksDuration
FirstI60 out of which 50 questions are to be attempted50x2 = 1001¼ Hours (09.30 a.m. to 10.45 a.m.)
FirstII50 questions all of which are compulsory50x2 = 1001¼ Hours (10.45 a.m. to 12.00 Noon.)
SecondIII75 questions all of which are compulsory75x2 = 1502½ Hours (01.30 p.m. to 04.00 p.m.)
  
2.
The candidates are required to obtain minimum marks separately in Paper-I, Paper-II and Paper-III as given below:
 
    
Category
Minimum marks (%) to be obtained
Paper-I
Paper-II
Paper-III
General
40 (40%)
40 (40%)
75 (50%)
OBC
35 (35%)
35 (35%)
67.5 (45%) rounded off to 68
PH/VH/SC/ST
35 (35%)
35 (35%)
60 (40%)
  
 
Only such candidates who obtain the minimum required marks in each Paper, separately, as mentioned above, will be considered for final preparation of result.
However, the final qualifying criteria for Junior Research Fellowship (JRF) and eligibility for Lectureship shall be decided by UGC before declaration of result.
  
3.
The syllabus of Paper-I, Paper-II and Paper-III will remain the same.
  
4.
The candidates will be allowed to carry the carbon printout of OMR Response Sheets with them on conclusion of the examination.
  
5.
There will be no negative marking.




courtesy : www.ugc.ac.in

Thursday, March 22, 2012

IGNOU MCA Details

Master of Computer Applications (MCA)

Minimum Duration: 3 Years
Maximum Duration: 6 Years
Course Fee: Rs. 16,100
Minimum Age: No bar 
Maximum Age: No bar 

Eligibility:
 Any graduate from a recognised university. However, the students who have not pursued Mathematics as a distinct subject at 10+2 are required to pursue and pass the CS-60 course concurrently.
Note: Programme fee is per semester

Sunday, March 18, 2012

Multi Programming Vs Multi Tasking

Actually what is the difference between Multi Programming Vs Multi Tasking . In some text books it s seen that multi tasking is the theoretical expansion of multiprogramming . How can we convey this idea?
If you have answer please comment here.

Friday, March 9, 2012

What is Virtual Memory ?

How Operating System makes this illusion ?

An imaginary memory area supported by some operating systems (for example, Windows but not DOS) in conjunction with the hardware. You can think of virtual memory as an alternate set of memory addresses. Programs use these virtual addresses rather than real addresses to store instructions and data. When the program is actually executed, the virtual addresses are converted into real memory addresses.


The purpose of virtual memory is to enlarge the address space, the set of addresses a program can utilize. For example, virtual memory might contain twice as many addresses as main memory. A program using all of virtual memory, therefore, would not be able to fit in main memory all at once. Nevertheless, the computer could execute such a program by copying into main memory those portions of the program needed at any given point during execution.


To facilitate copying virtual memory into real memory, the operating system divides virtual memory into pages, each of which contains a fixed number of addresses. Each page is stored on a disk until it is needed. When the page is needed, the operating system copies it from disk to main memory, translating the virtual addresses into real addresses.


The process of translating virtual addresses into real addresses is called mapping. The copying of virtual pages from disk to main memory is known as paging or swapping.

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