Wednesday, 21 May 2014
CS609 - System Programming Quiz No. 01 Solution Spring 2014 Free Online
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CS609 - System Programming Quiz No. 01 Solution and Discussion Spring 2014 D
Question # 2 of 10 ( Start time: 10:02:46 AM ) Total Marks: 1
Int 14H __________ can be used to set the line parameter of the UART or COM port.
Select correct option:
Service # 0
Service # 1
Service # 2
None of the given options
Question # 3 of 10 ( Start time: 10:03:26 AM ) Total Marks: 1
Total No. of bytes that can be stored in Keyboard Buffer is____.
Select correct option:
16
32
64
128
Question # 4 of 10 ( Start time: 10:04:31 AM ) Total Marks: 1
In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);
Select correct option:
if (((*scr)&12)==12)
if (((*scr)&8)==8)
if (((*scr)&4)==4)
if (((*scr)&2)==2)
Question # 5 of 10 ( Start time: 10:06:01 AM ) Total Marks: 1
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
Select correct option:
TRUE
FALSE
Question # 6 of 10 ( Start time: 10:06:22 AM ) Total Marks: 1
DSR stands for __________
Select correct option:
Data set ready
Data service ready
Data stock ready
None of the above
Question # 7 of 10 ( Start time: 10:07:25 AM ) Total Marks: 1
Int 14H __________ can be used to receive a byte.
Select correct option:
Service # 0
Service # 1
Service # 2
None of the given options
Question # 8 of 10 ( Start time: 10:08:56 AM ) Total Marks: 1
At IRQ 7 Interrupt # ___ is used.
