CS609-Midterm
1 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
2 / 50
In counter register bit no. 3 changes its value between 0 and 1 with in ____clock cycles
3 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
4 / 50
Display device (Monitor) performs _________ I/O.
5 / 50
The keyboard makes use of interrupt number _______ for its input operations.
6 / 50
NMI Stand for
7 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
8 / 50
Which port is known as Data Port______
9 / 50
Standard PC operates in two modes in terms of memory which are
10 / 50
The interval timer can operate in _______ modes.
11 / 50
DTE is ___________
12 / 50
To distinguish 486 with Pentium CPUID Test is used.
13 / 50
__________is used to control the printer via the BIOS
14 / 50
DCE stands for __________.
15 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
16 / 50
_____ bit is cleared to indicate the low nibble is being sent.
17 / 50
In ____________each byte is needed to be encapsulated in start and end.
18 / 50
DSR stands for __________ .
19 / 50
------------ is used to set time from RTC
20 / 50
PPI stands for
21 / 50
DTE is ____________.
22 / 50
DMA stands for_________
23 / 50
Each paragraph in keep function is ____ bytes in size.
24 / 50
BIOS support _____________UARTS as COM ports.
25 / 50
If keyboard buffer is empty the head and tail points at the same location.
26 / 50
___________ is used to identify cause of interrupt.
27 / 50
DCE is _____________
28 / 50
Control information in files is maintained using
29 / 50
There are two main types of interrupts, namely
30 / 50
------------ is used to read time from RTC
31 / 50
Interrupt ______ is used to get or set the time.
32 / 50
BIOS DO NOT support ______.
33 / 50
_______ is LED control byte.
34 / 50
The ____________ function simply enables the self test facility within the modem control register
35 / 50
Interrupt 9 usually reads the _________ from keyboard.
36 / 50
Timer interrupt is a _________.
37 / 50
38 / 50
The interval timer can operate in ____modes.
39 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
40 / 50
------------ is used to read date from RTC
41 / 50
In self test mode the output of the UART is routed to its input.
42 / 50
At IRQ 7 Interrupt # ___ is used.
43 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
44 / 50
The BIOS interrupt ________ can be used to configure RTC.
45 / 50
Software based flow control make use of -------- control characters
46 / 50
The Function of I/O controller is to provide ____________.
47 / 50
Int 14H____________ can be used to send a byte
48 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
49 / 50
File system used in CD’s is_______ file system
50 / 50
Keyboard uses port ____ as status port.
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