CS609-Midterm
1 / 50
There are two type of communication synchronous and Anti Synchronous
2 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
3 / 50
The interval timer can operate in _______ modes.
4 / 50
On the execution of IRET instruction, number of bytes popped from stack is
5 / 50
Int 14H __________ can be used to receive a byte.
6 / 50
Timer interrupt is a _________.
7 / 50
DCE stands for __________.
8 / 50
By cascading two DMAs ____ bits can be transferred.
9 / 50
File system used in CD’s is_______ file system
10 / 50
Hardware Interrupts are __________.
11 / 50
Keyboard Status Byte is located at the address
12 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
13 / 50
_______ is LED control byte.
14 / 50
The service _________ is called the keyboard hook service.
15 / 50
_____ bit is cleared to indicate the low nibble is being sent.
16 / 50
______ is Disk interrupt.
17 / 50
DTE is ____________.
18 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
19 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
20 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
21 / 50
The Function of I/O controller is to provide ____________.
22 / 50
The output on the monitor is controlled by a controller called __________within the PC.
23 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
24 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
25 / 50
The BIOS interrupt ________ can be used to configure RTC.
26 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
27 / 50
28 / 50
At IRQ 7 Interrupt # ___ is used.
29 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
30 / 50
31 / 50
Software based flow control make use of -------- control characters
32 / 50
PPI is used to perform parallel communication
33 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
34 / 50
There are two main types of interrupts namely _________________.
35 / 50
Control information in files is maintained using
36 / 50
________means typematic rate will be sent in next byte.
37 / 50
The interval timer can operate in ____modes.
38 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
39 / 50
40 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
41 / 50
Maximum number of interrupts in a standard PC is
42 / 50
The keyboard makes use of interrupt number _______ for its input operations.
43 / 50
Standard PC operates in two modes in terms of memory which are
44 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
45 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
46 / 50
------------ is used to set time from RTC
47 / 50
In ____________each byte is needed to be encapsulated in start and end.
48 / 50
------------ is used to read date from RTC
49 / 50
A software interrupt does not require EOI (End of interrupt).
50 / 50
BIOS support _____________UARTS as COM ports.
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