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CS609 Final Term Solved Mcqs with References Without Repetitions 14/02/2013

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CS609 Final Term Solved Mcqs with References Without Repetitions 14/02/2013 1 CS609 Final Term Solved MCQs with References Without Repetitions 14/02/2013 In BPB, root directory is saved in _________. (BIOS parameter block) Cluster#0 Cluster#1 (Ref) Cluster#2 Cluster#3 In NTFS, total sizes of MFT entries are _______. 16-bytes (page303= An MFT entry is 1024 bytes in size. The first 16 entries of the MFT are reserved) 20-bytes 26-bytes 32-bytes In NTFS, _______ store the contents of file. Both small & large file Record (Reference) Small record Large Record None of given Question # 3 Cluster size is reduced in __________. Select correct option: FAT12 (Ref1, Ref2) FAT16 FAT32 None of the given Question # 4 To store a cluster in FAT 32 _____ is/are needed. Select correct option: Nibble Byte 2 Bytes 4 Bytes (Ref1, Ref2) o A single digit of a binary number is a bit. o A byte is 8 bits o A nibble is 4 bits (half a byte) o A word is 2 bytes 2 Question # 4 When Driven LSN is equal to zero (0), it means ________. LSN is relative address with respect to the start of Logical (Lec#30 p#240) Question # 5 When LSN is equal to zero (0), it means ________. Select correct option: First block of the disk First block of the logical drive (p240) First block of hidden blocks None of the given The LBA=0 block is the first block on disk. Whereas each logical partition has LSN=0 block which is the first block in logical drive. (p240) Question # 6 File can be _______ viewed as collection of clusters or blocks. Select correct option: Physically (p256) Logically Both logically and physically None of the give Question # 7 The size of FCB data structure is _______ bytes. Select correct option: 16 32 (close to 37) 64 128 o An FCB is a 37-byte data structure Question # 10 File can be _______ viewed as organization of data. Select correct option: Physically Logically (p256) Both logically and physically None of the give Q#4 File is ……………… viewed as an organization of data physically it can be collection of clusters or blocks Ans: Logically Lec#33 p#256 Question # 1 ________ file system keeps the backup of its boot block. 3 Select correct option: FAT12 FAT16 FAT32 (Ref) None of the given Question No. 3 Keyboard Status Byte is located at the address 0040:0000H 0040:0013H 0040:0015H 0040:0017H (p29) Question No. 5 Maximum number of interrupts in a standard PC is 64 128 256 (p10) 512 Using the____ entry and the FAT we can access the contents of file. Reserved blocks Root Directory (p269) Number of FAT copies None of the given Control information in files is maintained using BPB DPB FCB (p256) FPB What will happen if NTFS volume is accessed in DOS? Convert it to FAT volume Nothing will happen Error of invalid media (p310) None of the given LSN of FS Info block is available at BPB FAT (p299) Root Directory None of the given DOS device drivers do not understand the_____ data structures. FAT12 4 FAT16 FAT32 NTFS (p310) Question # 4 To store a UNICODE character ____ is/are needed. Select correct option: Nibble Byte 2 Bytes (Ref) 4 Bytes Operating system name contains ____ bytes in boot block. 3 5 8 (p253) 11 Question # 6 In FAT32, lower _______ bits are used. Select correct option: 26 28 (p292) 30 32 Question # 8 What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H? Select correct option: 0 1 2 3 (p249) Question # 1 To access drive parameter block we use undocumented service ______ Select correct option: 09H/32H 11H/32H 17H/32H 21H/32H (p249) Question # 10 _______ is relative address with respect to the start of Logical Drive. Select correct option: 5 LBA LSN (p240) CHS None of the given o LBA is physical or absolute address. Question # 3 Maximum possible entries in FAT12 are ________. Select correct option: 1024 2048 4096 (p264) 65536 o FAT12 will have 12-bit wide entries and can have 2^12=4096 entries maximum. Question # 6 Jump code part contains ____ bytes in boot block. Select correct option: 3 (p302, p244) While "short jump" only requires 2 bytes. 5 8 11 Question # 8 Drive parameter block is derived from ___________. Select correct option: FCB FAT BPB (p249) CPB Question # 10 ______ is the first block on disk. Select correct option: LSN =0 LBA=0 (p240) LBA=1 Both LBA=0 and LSN=0 Question # 3 If FAT entry is between FFF0H to FFF6H in FAT16 then _______. Select correct option: Cluster is available It is a Reserved cluster (p496 PC Intern Encyclopedia of System Programming) 6 It is next file cluster It is a last file cluster Question # 4 What will be the value of the word located at 1Fh in DPB when number of free clusters on drive is not known? Select correct option: 0000H 1111H FFFFH (p250) None of the given. Question # 7 In dos we have limit of _______ . Select correct option: 128 blocks per cluster (p242) 256 blocks per cluster 32 blocks per cluster 64 blocks per cluster o DOS has a built in limit of 128 blocks per cluster. o But practically limit of 64 blocks per cluster has been established. Question # 2 The practical limit of blocks per cluster is _______. Select correct option: 32 blocks per cluster 64 blocks per cluster (p242) 128 blocks per cluster 256 blocks per cluster Question # 8 We can access the contents of File by using the root directory entry and _____. Select correct option: Reserved Blocks Number of FAT copies File Allocation Table (FAT) (p269) None of the given Question # 10 When we mark a file as deleted by placing 0xE5 then the chain of clusters in FAT is also replaced by ______. Select correct option: E5 1 7 0 (p279) N Highest capacity physical capacity of the disk according to the IDE interface is _________. 127 GB (p212) 100 GB 80 GB 300 GB If CPUID instruction is not present then the processor can be a ______________ 486 processor (p166) 386 processor 286 processor All of the given choices Extended memory is available if the processor is of the type _______________ AT (p171) XT All of the given choices None of them The built in mechanism within the UART for error detection is_____________ Hamming code Parity (p107) CRC16 (cyclic redundancy check 16 bit ) CRC32 (cyclic redundancy check 32 bit ) In Protected Mode, the segment registers are used as _______________ Descriptor Selector (p326) All of the given choices None of the given choices ________ is an absolute address relative to the start of physical drive. LBA (p240) LSN CHS None of the above NTFS volume can be accessed directly in DOS. True False (p310) _________ is used to read a block against its LSN. Select correct option: absread() (p247) abswrite() 8 lsnread() None of the given Cluster number can also be referred as block number. Select correct option: True False (Cluster is not same as block number) (P258) ________ is a collection of contagious blocks. Cluster (p242) Sector Byte None of Given The directory structure of DOS is like ________. Select correct option: Array Tree (p256) Linked list None of the given 1) DOS command ________ which gives the status of the memory and also points out which memory area occupied by which process. mem/d (P#13) mem/e mem/m None of the given 2) Each entry in the IVT is ________ in size. 4-bytes (P # 12) 6-bytes 8-bytes 2-bytes 3) The tail value of the keyboard buffer should be examined to get to the ______ of the buffer. Start (P # 56) End Middle None of given) 4) Interrupt Procedures are Reentrant procedures. True (P # 38) False 5) ______ is Disk interrupt. 10H 9 11H 13H (P # 42) 14H 6) Boot block consists of ______ bytes. 64 128 256 512 (P # 242) 7) In parallel communication, the maximum numbers of bits we can send between two computers are ________. 2-bits 4-bits 6-bits 8-bits 8) 14h include __________ which is used to send a byte. Service #0 Service #1 (P # 121) Service #2 Service #3 9) The status register _____ is the main control register. B (P # 146) A C D 10) The DMA requests to acquire buses through the ________ signal. HOLD (P # 186) ACR ACK None of Given 11) The keyboard device writes a code 0xFA on the port 60H to indicate that the _______. Input buffer is full Byte has been received properly (P # 179) Output buffer is full None of the given 12) A single DMA can transfer ______ operands to and from memory in a single a bus cycle. 8-bits (P # 186) 16-bits 32-bits 10 12-bits 14) In FAT12, to calculate the address or offset from index, we need to multiply it with ___. 1/2 3/2 (p# 267) 5/7 7/2 15) _____ Register can be used to show that the channel is single transfer, block transfer or demand transfer mode. DMA Command register DMA Request Register DMA Mode Register DMA controller Register (p187,188 Handouts && p234 PC Intern Encyclopedia of System Programming ) 16) LBA address can be used in place of the CHS address. True (p# 235) False 17) In FAT12, the maximum range of clusters is ……... 0 ~ FEFH 1~ FEFH 2 ~ FEFH (p# 266, 272) 3 ~ FEFH 18) Each partition information chunk is 16 bytes long and the last two bytes at the end of the partition table data part is the partition table signature whose value should be_____ indicating that the code part contains valid executable code.
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