CS609-Midterm
1 / 50
File system used in CD’s is_______ file system
2 / 50
DTE is ____________.
3 / 50
In ____________each byte is needed to be encapsulated in start and end.
4 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
5 / 50
Which port is known as Data Port______
6 / 50
Display device (Monitor) performs _________ I/O.
7 / 50
The amount of memory above conventional memory (extended memory) can be determined using the service _______.
8 / 50
Control information in files is maintained using
9 / 50
DSR stands for __________ .
10 / 50
Interrupt _____ is empty; we can use its vector as a flag.
11 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
12 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
13 / 50
_________ is used to identify the cause of interrupt.
14 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
15 / 50
To store each character in keyboard buffer ____ bytes are required.
16 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
17 / 50
To distinguish 486 with Pentium CPUID Test is used.
18 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
19 / 50
______ is Disk interrupt.
20 / 50
The BIOS interrupt ________ can be used to configure RTC.
21 / 50
____ No. of bytes are used to store the character in the keyboard buffer.
22 / 50
Timer interrupt is a _________.
23 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
24 / 50
Register can be used to divide frequency is _________
25 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
26 / 50
Usually interrupt procedures are reentrant procedures especially those interrupt procedure compiled using C language compiler are reentrant.
27 / 50
Standard PC operates in two modes in terms of memory which are
28 / 50
Which of the following are types of ISR __________.
29 / 50
The interval timer can operate in _______ modes.
30 / 50
The ____________ function simply enables the self test facility within the modem control register
31 / 50
The output on the monitor is controlled by a controller called __________within the PC.
32 / 50
REGS is a Union
33 / 50
The keyboard input character scan code is received at ___ port.
34 / 50
Following is not a method of I/O
35 / 50
______ is used to set time.
36 / 50
BIOS support _____________UARTS as COM ports.
37 / 50
Hardware Interrupts are __________.
38 / 50
UART stands for_______
39 / 50
The microprocessor package has many signals for data. Below are some in Correct priority order (Higher to Lower).
40 / 50
What will be the value of DL register when we are accessing C drive using undocumented service 21H/32H?
41 / 50
DTE is ___________
42 / 50
43 / 50
A single interrupt controller can arbitrate among ____ different devices.
44 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
45 / 50
Int 14H____________ can be used to send a byte
46 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
47 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
48 / 50
PPI stands for _____________.
49 / 50
If keyboard buffer is empty the head and tail points at the same location.
50 / 50
The interval timer can operate in ____modes.
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