CS609-Midterm
1 / 50
Interrupt ______ is used to get or set the time.
2 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
3 / 50
_____ bit is cleared to indicate the low nibble is being sent.
4 / 50
5 / 50
UART stands for_______
6 / 50
Timer interrupt is a _________.
7 / 50
Display device (Monitor) performs _________ I/O.
8 / 50
DSR stands for __________ .
9 / 50
Int 14H __________ can be used to receive a byte.
10 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
11 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
12 / 50
______ is used to set time.
13 / 50
14 / 50
There are __________ kinds of serial communication.
15 / 50
File system used in CD’s is_______ file system
16 / 50
A software interrupt does not require EOI (End of interrupt).
17 / 50
In self test mode the output of the UART is routed to its input
18 / 50
Following is not a method of I/O
19 / 50
The interval timer can operate in ____modes.
20 / 50
DCE is _____________
21 / 50
PPI stands for
22 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
23 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
24 / 50
DTE is ____________.
25 / 50
Timer interrupt occurs _______ times every second by means of hardware.
26 / 50
BIOS DO NOT support ______.
27 / 50
Control information in files is maintained using
28 / 50
By cascading two DMAs ____ bits can be transferred.
29 / 50
Standard PC operates in two modes in terms of memory which are
30 / 50
DCE stands for __________.
31 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
32 / 50
33 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
34 / 50
The ______ service # is not used in any interrupt.
35 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
36 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
37 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
38 / 50
REGS is a Union
39 / 50
40 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
41 / 50
In ____________each byte is needed to be encapsulated in start and end.
42 / 50
The keyboard input character scan code is received at ___ port.
43 / 50
The ____________ function simply enables the self test facility within the modem control register
44 / 50
45 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
46 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
47 / 50
Only ________ ports are important from programming point of view.
48 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
49 / 50
Maximum number of interrupts in a standard PC is
50 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
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