CS609-Midterm
1 / 50
File can be______ viewed as collection of clusters or blocks.
2 / 50
BPB stands for _________.
3 / 50
Timer interrupt is a _________.
4 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
5 / 50
The BIOS interrupt ________ can be used to configure RTC.
6 / 50
Standard PC operates in two modes in terms of memory which are
7 / 50
Tail of keyboard should get to get the start of buffer.
8 / 50
_______ is LED control byte.
9 / 50
Interrupt 9 usually reads the _________ from keyboard.
10 / 50
LPTs can be swapped.
11 / 50
DTE is ____________.
12 / 50
The ______ service # is not used in any interrupt.
13 / 50
A software interrupt does not require EOI (End of interrupt).
14 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
15 / 50
___________ is used to identify cause of interrupt.
16 / 50
The interval timer can operate in _______ modes.
17 / 50
If CPUID instruction is not present then the processor can be a
18 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
19 / 50
Interrupt _____ is empty; we can use its vector as a flag.
20 / 50
By cascading two DMAs ____ bits can be transferred.
21 / 50
BIOS DO NOT support ______.
22 / 50
The ____________ function simply enables the self test facility within the modem control register
23 / 50
PPI stands for
24 / 50
DTE is ___________
25 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
26 / 50
In ____________each byte is needed to be encapsulated in start and end.
27 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
28 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
29 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
30 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
31 / 50
______ is LED control byte.
32 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
33 / 50
______ is Disk interrupt.
34 / 50
Int 14H __________ can be used to receive a byte.
35 / 50
Register can be used to divide frequency is _________
36 / 50
------------ is used to read time from RTC
37 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
38 / 50
Keyboard uses port ____ as status port.
39 / 50
Maximum number of interrupts in a standard PC is
40 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
41 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
42 / 50
There are two main types of interrupts, namely
43 / 50
File system used in CD’s is_______ file system
44 / 50
The Function of I/O controller is to provide ____________.
45 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
46 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
47 / 50
48 / 50
Software based flow control make use of -------- control characters
49 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
50 / 50
Hardware Interrupts are __________.
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