CS609-Midterm
1 / 50
Int ________ is used to control the printer via the BIOS.
2 / 50
If keyboard buffer is empty the head and tail points at the same location.
3 / 50
Counter register can be used to divide clock signal.
4 / 50
There are two type of communication synchronous and Anti Synchronous
5 / 50
Only ________ ports are important from programming point of view.
6 / 50
_____ bit is cleared to indicate the low nibble is being sent.
7 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
8 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
9 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
10 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
11 / 50
The interval timer can operate in ____modes.
12 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
13 / 50
Timer interrupt is a _________.
14 / 50
There are __________ kinds of serial communication.
15 / 50
Software based flow control make use of -------- control characters
16 / 50
______ is LED control byte.
17 / 50
18 / 50
___________ is used to identify cause of interrupt.
19 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
20 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
21 / 50
BIOS DO NOT support ______.
22 / 50
NMI Stand for
23 / 50
BPB stands for _________.
24 / 50
DCE stands for __________.
25 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
26 / 50
There are two main types of interrupts namely _________________.
27 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
28 / 50
The Function of I/O controller is to provide ____________.
29 / 50
UART stands for_______
30 / 50
A single interrupt controller can arbitrate among ____ different devices.
31 / 50
Maximum number of interrupts in a standard PC is
32 / 50
LPTs can be swapped.
33 / 50
34 / 50
Operating system name contains ____ bytes in boot block.
35 / 50
Standard PC operates in two modes in terms of memory which are
36 / 50
Register can be used to divide frequency is _________
37 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
38 / 50
Interrupt service number is usually placed in ____________ register.
39 / 50
To store each character in keyboard buffer ____ bytes are required.
40 / 50
Keyboard Status Byte is located at the address
41 / 50
Interrupt ______ is used to get or set the time.
42 / 50
43 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
44 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
45 / 50
Hardware Interrupts are __________.
46 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
47 / 50
File system used in CD’s is_______ file system
48 / 50
______ is used to set time.
49 / 50
DMA stands for_________
50 / 50
File can be______ viewed as collection of clusters or blocks.
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