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Today my paper CS609     29-02-2016       ZAHEER AKHTAR

MCQ was mostly moaz file.

subjective

 

1)-    How to recover a Deleted Files.

2)-    Structure of data part of Partitioning Table.

3)-    Write the functionality of abs read and abs write?

4)-    Write three types of descriptive table ?

5)-     In NTFS, where the backups of boot block are stored and why?

6)-    LSN of Fs info block can be found from---------------

7)-    How can we read/write the disk block when LSN is given?

8)-    How we convert cluster number to sector number

9)-     define:

i)-Head       ii)-sector    iii)-tracks

10)-   define:

i)-Seek time         ii)-Access time

11)-  Which control information PSP contains?

12)-  Write down procedure to convert a cluster number into sector number

Plzzzz sb log current paper upload kia kro kisi ki help kro ge to koe ap ki kre ga….

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 Fiiinder++ thanks for sharing 

Attention Students: You don’t need to go any other site for current papers pattern & questions. Because all sharing data related to current Final term papers of our members are going from here to other sites. You can judge this at other sites yourself. So don’t waste your precious time with different links. Just keep visiting http://vustudents.ning.com/ for all latest updates.

1: Write down structure of data part of partition table? 5mks

2:Write down procedure to convert a cluster number into sector number? 5mks

3: How descriptor a memory segment and whar are the attributes of memory segment? 5mks

4: Write down the structure of boot sector for NTFS based system? 5 mks

5:How many maximum root directory entries are possible in FAT12 & FAT16? 3mks

6: Which control information PSP (program Segment Prefix) contain? 2mks

nomi thanks for sharing 

Attention Students: You don’t need to go any other site for current papers pattern & questions. Because all sharing data related to current Final term papers of our members are going from here to other sites. You can judge this at other sites yourself. So don’t waste your precious time with different links. Just keep visiting http://vustudents.ning.com/ for all latest updates.

Here are more papers solved and should be very helpful ... according to many students, papers are coming from these files ... so must read and understand them all if you can!

where are the files BLOOM

MCQ's from Moaz file  

Subjective 

How many maximum possible entries are there in FAT32 and FAT16? 2 marks

Answer: FAT32 evidently will contain more entries and can hence manage a very large disk whereas FAT16 can manage a space of 2 GB maximum practically.

-define: 2 marks

 i)Seek Time: - While accessing a selected block Time required by the head to reach the particular track/cylinder is called seek time

     ii)-Access time  :-The accumulative time that is required to access the selected block is called access time

define 2 marks

i)block  

 Blocks are the sectors per track, smallest addressable unit in memory; address of block is specified as a unique combination of three parameters

  ii)cylinder   

Cylinder is a collection of corresponding tracks if track on platter changes so will the tracks on rest of the platters as all the heads move simultaneously

Write the functionality of abs read and abs write? 3 marks

Answer:  

abs read( ) is used to read a block given its LSN • abs write( ) is used to write a block given its LSN absread(int drive, int nsects, long lsec, void *buffer); abswrite(int drive, int nsects, long lsec, void *buffer);

Q:7 What are three different kinds of computer viruses? 3 Marks

 Answer: Types of Viruses • Partition Table Virus • Boot Sector Virus • File Viruses

Difference between COM file and DOS EXE?  3 marks

Answer: The main difference in COM File and DOS EXE File is that the COM File starts its execution from the first instruction, whereas the entry point of execution in EXE File can be anywhere in the Program.

Which file system keeps the backup of its boot block? 3 marks

How Accessing NTFS volume in DOS? 5 marks

Answer:  

• NTFS volume cannot be accessed in DOS using DOS based function like absread( ) etc. • DOS device drivers does not understand the NTFS data structures like MFT etc. • If NTFS volume is accessed in DOS, it will fire the error of Invalid Media

Find the root directory sector. Where reserved sector = 1 and sector per FAT = 9. Use appropriate assumption where needed? 5 Marks 

Answer: Root DIR Sector: reserved sectors +2 * (size of FAT) = 1 + 2 * 9 = 19

Write down autonomy of NTFS file system? 5 marks

Ans:lecture 30

Q# aik daigram  the DMA se related is k steps batane they.

Best of luck friends 

 

Dear students Read the  following terms 

1) Block: - Blocks are the sectors per track, smallest addressable unit in memory; address of block is specified as a unique combination of three parameters.

(2) Sector: - Each track can hold many thousands of bytes of data. It would be wasteful to make a track the smallest unit of storage on the disk, since this would mean small files wasted a large amount of space. Therefore, each track is broken into smaller units called sectors.

(3) Track: - All information stored on a hard disk is recorded in tracks, which are concentric circles placed on the surface of each platter, much like the annual rings of a tree. The tracks are numbered, starting from zero, starting at the outside of the platter and increasing as you go in. A modern hard disk has tens of thousands of tracks on each platter

(4) Cluster: - Cluster is the collection of contiguous blocks. User data is divided into cluster, number of blocks within a cluster is in power of 2. Cluster size can be varying depending upon the size of the disk.

(5) Cylinder: - Cylinder is a collection of corresponding tracks if track on platter changes so will the tracks on rest of the platters as all the heads move simultaneously
(6) Seek Time: - While accessing a selected block Time required by the head to reach the particular track/cylinder is called seek time

(7) Access Time: - The accumulative time that is required to access the selected block is called access time

(8) LBA (Logical Block Addressing): - LBA is the address of relative to the start of physical drive i.e. (absolute).

(9) LSN (Logical Sector Number): - If the blocks are indexed from the boot block such that the boot block has index = 0. Then this index is called LSN. LSN is relative index from the start of logical drive not the physical drive.

(10) DAP (Disk Address Packet): - Disk Address Packet is data structure used by extended in 13H services to address a block and other information for accessing the block.

(11) BPB (BIOS Parameter Block): - BIOS Parameter Block is a data structure maintained by DOS in the boot block for each drive. The boot block is typically a 512 byte block it contain some code and data. The data part constitutes the BPB.

(12) DPB (Drive Parameter Block): - Beside the BPB there is another data structure can be used equivalently called the DPB. The operating system translates the information in BPB on disk into the DPB which is maintained main memory. This data structure can be accessed using the undocumented services 21H/32H.

thanks

Dear Friend my Today paper 2:00 PM 3-3-2016

How to recover a Deleted Files.
Structure of data part of Partitioning Table.
Write three types of descriptive table ?
How we convert cluster number to sector number
where the backups of boot block are stored
How many maximum root directory entries are possible in FAT12 & FAT16? 3mks
How Accessing NTFS volume in DOS?
Whats is meaning of descriptor table ,access time G.D.AVT

Best OF LUCK.......

thx bro

Mostly MCQ's where new say 40% .... subjective was from these files ... 80%

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