(1)_________ is used to identify the cause of interrupt.
Interrupt ID Register (Page 116)
PC Register
Register
None of All These
(2)Int ________ is used to control the printer via the BIOS.
17H (Page 84)
18H
20H
21H
(3)Only ________ ports are important from a programming point of
view.
view.
70 and 71H (Page 141)
71 and 72H
70 and 72H
72 and 73H
(4)In case of synchronous communication a timing signal is
required to identify the start and end of a bit.
required to identify the start and end of a bit.
True ( 105)
False
(5)
In order to produce the sound from PC internal Speaker we have
to load the___bit divisor value at the ___port.
to load the___bit divisor value at the ___port.
8, 0x21
16, 0x42
32, 0x22
64, 0x32
(6)The ____________ function simply enables the self test
facility within the modem control register STOn()
facility within the modem control register STOn()
SelfTest()
SelfTestOn() (Page 127)
Non of these
(7)BIOS support _____________UARTS as COM ports.
6
4 (Page 113)
3
2
(8)The BIOS interrupt 0x1AH can be used to configure real-time
clock
clock
True (Page 136)
False
(9)The baud rate is set in accordance with the divisor value
loaded within the UART internal registers base +0 and base +1.
loaded within the UART internal registers base +0 and base +1.
TRUE (Page 114)
FALSE
(10) The ————-function uses the COM port number to
receive a byte from the COM port using BIOS services.
receive a byte from the COM port using BIOS services.
Receive( )
Recievebyte()
recievechar() (125)
None of All These
1_Blocks can be termed as______________.
Cylinder per sector
(not sure)
(not sure)
2_ _______ are the circular division of the disk.
Tracks
3_ We can access Blocks for FAT using _________.
FCB
4_ ________ is an internal data structure of DOS and resides in the main memory.
None of the given.
(Ans is SFT, however
its not in options.)
its not in options.)
5_ To access the drive parameter block we use undocumented service
______.
______.
21H/32H
6_ _______ is an absolute address relative to the start of the physical drive.
LBA 240pg
7_There is/are ____ DMA controller’s masking register(s).
1 not sure
8_ Highest physical capacity of the disk according to the IDE
interface is approximately _________.
interface is approximately _________.
127GB
9_ To access the block within-cluster using BIOS services the
cluster number should be converted into _____.
cluster number should be converted into _____.
LSN pg258
10_ What will be the value of the DL register when we are accessing the C drive using undocumented service 21H/32H?
3 pg249
There is/are ____ DMA
controller’s masking register(s). CS609
controller’s masking register(s). CS609
Not confirmed
Extended BIOS services require that the address of the block is
specified as _______. CS609
specified as _______. CS609
Extended services require that the address of the block is
specified as an LBA address.
A DMA cannot work in ___________ mode.