CS609-Midterm
1 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
2 / 50
The Function of I/O controller is to provide ____________.
3 / 50
______ is LED control byte.
4 / 50
------------ is used to set time from RTC
5 / 50
To distinguish 486 with Pentium CPUID Test is used.
6 / 50
BPB stands for _________.
7 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
8 / 50
A software interrupt does not require EOI (End of interrupt).
9 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
10 / 50
The BIOS interrupt ________ can be used to configure RTC.
11 / 50
Control information in files is maintained using
12 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
13 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
14 / 50
Each paragraph in keep function is ____ bytes in size.
15 / 50
File system used in CD’s is_______ file system
16 / 50
On the execution of IRET instruction, number of bytes popped from stack is
17 / 50
A single interrupt controller can arbitrate among ____ different devices.
18 / 50
DTE is ____________.
19 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
20 / 50
DCE stands for __________.
21 / 50
PPI is used to perform parallel communication
22 / 50
By cascading two DMAs ____ bits can be transferred.
23 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
24 / 50
DTE is ___________
25 / 50
The interval timer can operate in ____modes.
26 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
27 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
28 / 50
The keyboard makes use of interrupt number _______ for its input operations.
29 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
30 / 50
Int 14H____________ can be used to send a byte
31 / 50
NMI Stand for
32 / 50
33 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
34 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
35 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
36 / 50
37 / 50
_____ bit is cleared to indicate the low nibble is being sent.
38 / 50
The output on the monitor is controlled by a controller called __________within the PC.
39 / 50
------------ is used to read time from RTC
40 / 50
UART stands for_______
41 / 50
File can be______ viewed as collection of clusters or blocks.
42 / 50
The service _________ is called the keyboard hook service.
43 / 50
The interval timer can operate in _______ modes.
44 / 50
Tail of keyboard should get to get the start of buffer.
45 / 50
If keyboard buffer is empty the head and tail points at the same location.
46 / 50
In self test mode the output of the UART is routed to its input.
47 / 50
Only ________ ports are important from programming point of view.
48 / 50
______ is Disk interrupt.
49 / 50
DCE is _____________
50 / 50
Display device (Monitor) performs _________ I/O.
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