CS609-Midterm
1 / 50
DTE is ____________.
2 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
3 / 50
In ____________each byte is needed to be encapsulated in start and end.
4 / 50
_____ bit is cleared to indicate the low nibble is being sent.
5 / 50
Register can be used to divide frequency is _________
6 / 50
Timer interrupt occurs _______ times every second by means of hardware.
7 / 50
------------ is used to read date from RTC
8 / 50
Timer interrupt is a _________.
9 / 50
Each paragraph in keep function is ____ bytes in size.
10 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
11 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
12 / 50
The ______ service # is not used in any interrupt.
13 / 50
The keyboard input character scan code is received at ___ port.
14 / 50
Standard PC can have _____ PPI.
15 / 50
There are two type of communication synchronous and Anti Synchronous
16 / 50
Keyboard uses port ____ as status port.
17 / 50
Interrupt 9 usually reads the _________ from keyboard.
18 / 50
To distinguish 486 with Pentium CPUID Test is used.
19 / 50
IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.
20 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
21 / 50
22 / 50
If CPUID instruction is not present then the processor can be a
23 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
24 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
25 / 50
The interval timer can operate in _______ modes.
26 / 50
File can be______ viewed as collection of clusters or blocks.
27 / 50
The BIOS interrupt ________ can be used to configure RTC.
28 / 50
If keyboard buffer is empty the head and tail points at the same location.
29 / 50
There are two main types of interrupts namely _________________.
30 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
31 / 50
The BIOS interrupt 0x1AH can be used to configure real time clock
32 / 50
DSR stands for __________ .
33 / 50
The output on the monitor is controlled by a controller called __________within the PC.
34 / 50
File system used in CD’s is_______ file system
35 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
36 / 50
In order to produce the sound from PC internal Speaker we have to load the___bit divisor value at the ___port.
37 / 50
______ is LED control byte.
38 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
39 / 50
__________is used to control the printer via the BIOS
40 / 50
The bit number _______ of the coprocessor control word is the interrupt enable flag.
41 / 50
In self test mode the output of the UART is routed to its input
42 / 50
Hardware Interrupts are __________.
43 / 50
Interrupt _____ is empty; we can use its vector as a flag.
44 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
45 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
46 / 50
Display device (Monitor) performs _________ I/O.
47 / 50
Int 14H____________ can be used to send a byte
48 / 50
The keyboard makes use of interrupt number _______ for its input operations.
49 / 50
50 / 50
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