Question # 1
Which of the following is used to
terminate a string in assembly
language?
Select correct option :
!
#
$
;
Question # 2
Which of the following registers are
used as a DOS input buffer ?
Select correct option :
DS:AX
SS :SP
DS:DX
CS :BX
Question # 3
BIOS video services are exported via
interrupt
Select correct option :
INT 10
INT 9
INT 8
INT 7
Question # 4
In interrupt masking , We use ________
to get control from the program
without letting the program know about
it.
Select correct option :
IRQ 0
IRQ 1
IRQ 2
IRQ 3
Question # 5
In case of COM file , maximum length
of parameters passed through command
line can be ___
Select correct option :
63 bytes
127 bytes
255 bytes not confirmed
511 bytes
Question # 6
In case of COM file , first command
line parameter is stored at ___ offset
of ' program segment prefix '
Select correct option :
0 x 80
0 x 82
0 x 84
0 x 86
Question # 7
In multitasking , which of the following
interrupts is used as scheduler during
context switching ?
Select correct option :
INT 21
INT 16
INT 13
INT 8
Question # 8
____________ is the highest priority
interrupt in interrupt controller.
Select correct option :
IRQ 0
IRQ 1
IRQ 2
IRQ 3
Question # 9
Which of the following INT 21 service
is used to read character from
standard input ?
Select correct option :
00
01
02
03
Question # 10
As compared to _________ ,
___________ provides more cooked
services.
Select correct option :
BIOS, DOS
DOS,OS
DOS, BIOS
OS, DOS
