CS609-Midterm
1 / 50
________means typematic rate will be sent in next byte.
2 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
3 / 50
______ is LED control byte.
4 / 50
In self test mode the output of the UART is routed to its input.
5 / 50
A single interrupt controller can arbitrate among ____ different devices.
6 / 50
Standard PC operates in two modes in terms of memory which are
7 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
8 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
9 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
10 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
11 / 50
Keyboard uses port ____ as status port.
12 / 50
The interval timer can operate in ____modes.
13 / 50
Control information in files is maintained using
14 / 50
------------ is used to set time from RTC
15 / 50
DCE stands for __________.
16 / 50
File can be______ viewed as collection of clusters or blocks.
17 / 50
DSR stands for __________ .
18 / 50
Which of the following are types of ISR __________.
19 / 50
There are two main types of interrupts namely _________________.
20 / 50
To distinguish 486 with Pentium CPUID Test is used.
21 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
22 / 50
Which port is known as Data Port______
23 / 50
DTE is ____________.
24 / 50
In ____________each byte is needed to be encapsulated in start and end.
25 / 50
File system used in CD’s is_______ file system
26 / 50
Timer interrupt is a _________.
27 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
28 / 50
Interrupt _____ is empty; we can use its vector as a flag.
29 / 50
At IRQ 7 Interrupt # ___ is used.
30 / 50
Int ________ is used to control the printer via the BIOS.
31 / 50
Display device (Monitor) performs _________ I/O.
32 / 50
The interval timer can operate in _______ modes.
33 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
34 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
35 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
36 / 50
PPI stands for
37 / 50
Operating system name contains ____ bytes in boot block.
38 / 50
Interrupt 9 usually reads the _________ from keyboard.
39 / 50
PPI stands for _____________.
40 / 50
Counter register can be used to divide clock signal.
41 / 50
------------ is used to read time from RTC
42 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
43 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
44 / 50
The output on the monitor is controlled by a controller called __________within the PC.
45 / 50
BPB stands for _________.
46 / 50
Each paragraph in keep function is ____ bytes in size.
47 / 50
48 / 50
If keyboard buffer is empty the head and tail points at the same location.
49 / 50
Standard PC can have _____ PPI.
50 / 50
Interrupt ______ is used to get or set the time.
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