CS609-Midterm
1 / 50
There are __________ kinds of serial communication.
2 / 50
PPI stands for _____________.
3 / 50
To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.
4 / 50
The keyboard input character scan code is received at ___ port.
5 / 50
On the execution of IRET instruction, number of bytes popped from stack is
6 / 50
DCE stands for __________.
7 / 50
DTE is ___________
8 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
9 / 50
The keyboard makes use of interrupt number _______ for its input operations.
10 / 50
The PPI acts as an interface between the CPU and a parallel ________ .
11 / 50
There are two type of communication synchronous and Anti Synchronous
12 / 50
The -------- function receive a byte and COM port number is passed as parameter using BIOS service
13 / 50
PPI stands for
14 / 50
To store each character in keyboard buffer ____ bytes are required.
15 / 50
File system used in CD’s is_______ file system
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
The interval timer can operate in ____modes.
18 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
19 / 50
Timer interrupt occurs _______ times every second by means of hardware.
20 / 50
Int 14H______ can be used to set the line parameter of the UART or COM port
21 / 50
In ____________each byte is needed to be encapsulated in start and end.
22 / 50
Communication between keyboard and keyboard controller is __________.
23 / 50
A software interrupt does not require EOI (End of interrupt).
24 / 50
To access the block within cluster using BIOS services the cluster number should be converted into _____.
25 / 50
Command register is an _____ bit register
26 / 50
Maximum number of interrupts in a standard PC is
27 / 50
Interrupt 9 usually reads the _________ from keyboard.
28 / 50
Set the Interrupt vector means to change the double word sized interrupt vector within IVT.
29 / 50
Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
30 / 50
31 / 50
Interrupt ______ is used to get or set the time.
32 / 50
Operating system name contains ____ bytes in boot block.
33 / 50
Display device (Monitor) performs _________ I/O.
34 / 50
In self test mode the output of the UART is routed to its input.
35 / 50
BIOS support _____________UARTS as COM ports.
36 / 50
REGS is a Union
37 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
38 / 50
39 / 50
The interval timer can operate in _______ modes.
40 / 50
Int 14H____________ can be used to send a byte
41 / 50
By cascading two DMAs ____ bits can be transferred.
42 / 50
There are two main types of interrupts, namely
43 / 50
______ is Disk interrupt.
44 / 50
Standard PC operates in two modes in terms of memory which are
45 / 50
________ is a device incorporated into the PC to update time even if the computer is off.
46 / 50
The service _________ is called the keyboard hook service.
47 / 50
The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
48 / 50
49 / 50
The output on the monitor is controlled by a controller called __________within the PC.
50 / 50
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