CS609-Midterm
1 / 50
Following is not a method of I/O
2 / 50
A software interrupt does not require EOI (End of interrupt).
3 / 50
In self test mode the output of the UART is routed to its input
4 / 50
File can be______ viewed as collection of clusters or blocks.
5 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
6 / 50
Control information in files is maintained using
7 / 50
Interrupt ______ is used to get or set the time.
8 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
9 / 50
The Function of I/O controller is to provide ____________.
10 / 50
Counter register can be used to divide clock signal.
11 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
12 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
13 / 50
The keyboard input character scan code is received at ___ port.
14 / 50
At IRQ 7 Interrupt # ___ is used.
15 / 50
The interval timer can operate in ____modes.
16 / 50
_____ bit is cleared to indicate the low nibble is being sent.
17 / 50
By cascading two DMAs ____ bits can be transferred.
18 / 50
Register can be used to divide frequency is _________
19 / 50
BIOS support _____________UARTS as COM ports.
20 / 50
PPI is used to perform parallel communication
21 / 50
DSR stands for __________ .
22 / 50
Only ________ ports are important from programming point of view.
23 / 50
Standard PC can have _____ PPI.
24 / 50
------------ is used to read time from RTC
25 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
26 / 50
------------ is used to read date from RTC
27 / 50
28 / 50
There are two main types of interrupts, namely
29 / 50
_______ is LED control byte.
30 / 50
On the execution of IRET instruction, number of bytes popped from stack is
31 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
32 / 50
Bit number _______ of coprocessor control word is the Interrupt Enable Flag.
33 / 50
If keyboard buffer is empty the head and tail points at the same location.
34 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
35 / 50
Software based flow control make use of -------- control characters
36 / 50
The BIOS interrupt ________ can be used to configure RTC.
37 / 50
__________is used to control the printer via the BIOS
38 / 50
LPTs can be swapped.
39 / 50
A single interrupt controller can arbitrate among ____ different devices.
40 / 50
Standard PC operates in two modes in terms of memory which are
41 / 50
Interrupt 9 usually reads the _________ from keyboard.
42 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
43 / 50
Display device (Monitor) performs _________ I/O.
44 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
45 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
46 / 50
Hardware Interrupts are __________.
47 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
48 / 50
Communication between keyboard and keyboard controller is __________.
49 / 50
Int 14H __________ can be used to receive a byte.
50 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
Your score is
The average score is 0%
Restart quiz
