CS609-Midterm
1 / 50
Command register is an _____ bit register
2 / 50
Interrupt ______ is used to get or set the time.
3 / 50
LPTs can be swapped.
4 / 50
Control information in files is maintained using
5 / 50
The output on the monitor is controlled by a controller called __________within the PC.
6 / 50
_____ bit is cleared to indicate the low nibble is being sent.
7 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
8 / 50
REGS is a Union
9 / 50
10 / 50
The keyboard makes use of interrupt number _______ for its input operations.
11 / 50
Keyboard Status Byte is located at the address
12 / 50
Int ________ is used to control the printer via the BIOS.
13 / 50
------------ is used to set time from RTC
14 / 50
Standard PC operates in two modes in terms of memory which are
15 / 50
There are two type of communication synchronous and Anti Synchronous
16 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
17 / 50
In self test mode the output of the UART is routed to its input.
18 / 50
Communication between keyboard and keyboard controller is __________.
19 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
20 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
21 / 50
22 / 50
To distinguish 486 with Pentium CPUID Test is used.
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24 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
25 / 50
Maximum number of interrupts in a standard PC is
26 / 50
Only ________ ports are important from programming point of view.
27 / 50
The interval timer can operate in _______ modes.
28 / 50
Interrupt 9 usually reads the _________ from keyboard.
29 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
30 / 50
DCE is _____________
31 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
32 / 50
In self test mode the output of the UART is routed to its input
33 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
34 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
35 / 50
Software based flow control make use of -------- control characters
36 / 50
The service number is usually placed in the ________ register.
37 / 50
Following is not a method of I/O
38 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
39 / 50
Operating system name contains ____ bytes in boot block.
40 / 50
PPI is used to perform parallel communication
41 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
42 / 50
Standard PC can have _____ PPI.
43 / 50
44 / 50
Int 14H____________ can be used to send a byte
45 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
46 / 50
DCE stands for __________.
47 / 50
There are __________ kinds of serial communication.
48 / 50
The Function of I/O controller is to provide ____________.
49 / 50
------------ is used to read date from RTC
50 / 50
Display device (Monitor) performs _________ I/O.
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