CS609-Midterm
1 / 50
DMA stands for_________
2 / 50
PPI is used to perform parallel communication
3 / 50
In ____________each byte is needed to be encapsulated in start and end.
4 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
5 / 50
The output on the monitor is controlled by a controller called __________within the PC.
6 / 50
------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
7 / 50
------------ is used to set time from RTC
8 / 50
_____ bit is cleared to indicate the low nibble is being sent.
9 / 50
------------ is used to read date from RTC
10 / 50
LPTs can be swapped.
11 / 50
There are two main types of interrupts namely _________________.
12 / 50
To store each character in keyboard buffer ____ bytes are required.
13 / 50
Which port is known as Data Port______
14 / 50
By cascading two DMAs ____ bits can be transferred.
15 / 50
File system used in CD’s is_______ file system
16 / 50
Each paragraph in keep function is ____ bytes in size.
17 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
18 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
19 / 50
20 / 50
Interrupt service number is usually placed in ____________ register.
21 / 50
PPI stands for _____________.
22 / 50
23 / 50
Timer interrupt is a _________.
24 / 50
Only ________ ports are important from programming point of view.
25 / 50
On the execution of IRET instruction, number of bytes popped from stack is
26 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
27 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
28 / 50
The keyboard makes use of interrupt number _______ for its input operations.
29 / 50
Maximum number of interrupts in a standard PC is
30 / 50
31 / 50
Control information in files is maintained using
32 / 50
Hardware Interrupts are __________.
33 / 50
DCE stands for __________.
34 / 50
Communication between keyboard and keyboard controller is __________.
35 / 50
We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
36 / 50
Interrupt _____ is empty; we can use its vector as a flag.
37 / 50
If keyboard buffer is empty the head and tail points at the same location.
38 / 50
UART stands for_______
39 / 50
________means typematic rate will be sent in next byte.
40 / 50
Total No. of bytes that can be stored in Keyboard Buffer is____.
41 / 50
____whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.
42 / 50
To distinguish 486 with Pentium CPUID Test is used.
43 / 50
The BIOS interrupt ________ can be used to configure RTC.
44 / 50
There are two type of communication synchronous and Anti Synchronous
45 / 50
_________ used to determine the amount of conventional memory interfaced with the processor in kilobytes.
46 / 50
Display device (Monitor) performs _________ I/O.
47 / 50
REGS is a Union
48 / 50
The service number is usually placed in the ________ register.
49 / 50
PPI stands for
50 / 50
Interrupt 9 usually reads the _________ from keyboard.
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