Thursday, 14 February 2013
[VUSR] 66214 CS401 QUIZ NO. 4 FEB 14, 2013
CS401- Computer Architecture and Assembly Language
Quiz No.4 FEB 14, 2013
A 32-bit address register can access up to ____ of memory.
2 MB
2 GB
4 MB
4 GB
Operating system Organize data in the form of
Folder
Batch file
File
None of the above
The 'program segment prefix' for com files is of size:
Select correct option:
64 bytes
128 bytes
256 bytes
512 bytes
COM1 is connected with
IRQ2
IRQ3
IRQ4
IRQ5
"INT13 –BIOS disk services" generally uses which register to return the 'error flag' ?
Select correct option:
CF
DL
AH
AL
In case of COM file, first command line parameter is stored at ___ offset of 'program segment prefix'
0×80
0×82
0×84
0×86
On executing INT 0×21 service 0x3D, if file is successfully opened then
CF will contain 1
CF will contain 0
ZF will contain 1
ZF will contain 0
Which register is generally used to specify the service number of an interrupt ?
AX
BX
CX
The lower 16-bits of EAX register are labeled as:
EAL
AL
AH
AX
Device drivers can be divided into ___ major categories:
3
4
2
None
In programmable interrupt controller which of the following ports is referred as a
interrupt mask register?
Select correct option:
19
20
21
22
Which of the following BIOS INT provides serial port services
INT 21
INT 14
INT 10
INT 08
In 9pin DB 9 connector, which pin is assigned to RD (Received Data) ?
1
2
3
4
In 9pin DB 9 connector, which pin is assigned to Signal Ground ?
3
4
5
6
Device drivers can be divided into ___ major categories:
5
4
3
2
The INT 0x13 service 0x03 is use to
Select correct option:
Get drive parameter
Reset disk sector
Write disk sector
Read disk sector
Hard disk MBR( Master Boot Record ) is of size_____.
Select correct option:
446 bytes
350 bytes
512 bytes
256 bytes
COM2 is connected with
Select correct option:
IRQ 2
IRQ 3
IRQ 4
IRQ 5
On executing INT 0x21--service 0x3D, if file can't be opened then
Select correct option:
CF will contain 1
CF will contain 0
ZF will contain 1
ZF will contain 0
"INT13 --BIOS disk services" generally uses which register to return the 'error code' ?
correct option:
CF
DL
AH
AL
BPB stands for
Basic parameter block
Bios precise block
Basic precise block
Bios parameter block
"INT13 --BIOS disk services" generally uses which register to return the 'error flag' ?
CF
DL
AH
AL
The maximum length of DOS command line parameters is
64 bits
127 bits
256 bits
512 bits
Which of the following BIOS INT provides serial port services
Select correct option:
INT 21
INT 14
INT 10
INT 08
In case of COM file, maximum length of parameters passed through command line can be ___
Select correct option:
63 bytes
127 bytes
255 bytes
511 bytes
In case of COM file, first command line parameter is stored at ___ offset of 'program segment prefix'
Select correct option:
0x80
0x82
0x84
0x86
The 'program segment prefix' is used to store:
Select correct option:
DOS information
Command tail
DOS information and Command tail
None of the given options
The INT 0x13 service 0x03 is use to
Select correct option:
Read disk sector
Write disk sector
Reset disk sector
Get drive parameter
On executing INT 0x21--service 0x3D, if file can't be opened then
Select correct option:
CF will contain 1
CF will contain 0
ZF will contain 1
ZF will contain 0
Operating system Organize data in the form of
Select correct option:
Folder
Batch file
File
None of the above
We can access all the DOS services using
Select correct option:
INT 0x21
INT 0x13
INT 0x10
INT 0x08
In 9pin DB 9 connector, which pin is assigned to RD (Received Data) ?
Select correct option:
1
2
3
4
Device drivers can be divided into ___ major categories:
Select correct option:
5
4
3
2
The higher 16-bits of EAX register are labeled as:
Select correct option:
AX
EAH
AH
None of the given options
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