CS609-Midterm
1 / 50
Control information in files is maintained using
2 / 50
There are two type of communication synchronous and Anti Synchronous
3 / 50
Standard PC operates in two modes in terms of memory which are
4 / 50
The Function of I/O controller is to provide ____________.
5 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
6 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
7 / 50
Register can be used to divide frequency is _________
8 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
9 / 50
Keyboard uses port ____ as status port.
10 / 50
The ______ service # is not used in any interrupt.
11 / 50
_____ bit is cleared to indicate the low nibble is being sent.
12 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
13 / 50
LPTs can be swapped.
14 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
15 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
16 / 50
If CPUID instruction is not present then the processor can be a
17 / 50
The service number is usually placed in the ________ register.
18 / 50
DMA stands for_________
19 / 50
Maximum number of interrupts in a standard PC is
20 / 50
DCE stands for __________.
21 / 50
Keyboard Status Byte is located at the address
22 / 50
Interrupt ______ is used to get or set the time.
23 / 50
__________is used to control the printer via the BIOS
24 / 50
In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);
25 / 50
Display device (Monitor) performs _________ I/O.
26 / 50
There are __________ kinds of serial communication.
27 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
28 / 50
DSR stands for __________ .
29 / 50
In ____________each byte is needed to be encapsulated in start and end.
30 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
31 / 50
Which port is known as Data Port______
32 / 50
File system used in CD’s is_______ file system
33 / 50
DTE is ____________.
34 / 50
A software interrupt does not require EOI (End of interrupt).
35 / 50
------------ is used to read date from RTC
36 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
37 / 50
The keyboard makes use of interrupt number _______ for its input operations.
38 / 50
________means typematic rate will be sent in next byte.
39 / 50
Timer interrupt occurs _______ times every second by means of hardware.
40 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
41 / 50
42 / 50
By cascading two DMAs ____ bits can be transferred.
43 / 50
PPI stands for
44 / 50
45 / 50
The BIOS interrupt ________ can be used to configure RTC.
46 / 50
PPI is used to perform parallel communication
47 / 50
The output on the monitor is controlled by a controller called __________within the PC.
48 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
49 / 50
Timer interrupt is a _________.
50 / 50
The interval timer can operate in ____modes.
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