CS609-Midterm
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------------ whenever receive indicates the start of communication ……….. whenever receive indicates the end of communication
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File system used in CD’s is_______ file system
3 / 50
Only ________ ports are important from programming point of view.
4 / 50
There are two main types of interrupts, namely
5 / 50
Int 14H __________ can be used to receive a byte.
6 / 50
PPI interconnection _______ bits is cleared to indicate low nibble is being sent.
7 / 50
The keyboard input character scan code is received at ___ port.
8 / 50
If printer is _____ then printer sends back the ACK signal to the printer interface
9 / 50
If we want to produce the grave voice from speaker phone then we have to load the ____ divisor values at Port ____.
10 / 50
The output on the monitor is controlled by a controller called __________within the PC.
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The keyboard makes use of interrupt number _______ for its input operations.
12 / 50
Int_____________ service 0 can be used to set the line parameter of the UART or COM port.
13 / 50
The ______ service # is not used in any interrupt.
14 / 50
_______ is LED control byte.
15 / 50
DMA stands for_________
16 / 50
The________ function uses the COM port number to receive a byte from the COM port using BIOS services.
17 / 50
The ________function initialize the COM port whose number is passed as parameter using BIOS services.
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The following command “outportb (0x61,inportb(0x61) | 3);” will ________ .
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There are two main types of interrupts namely _________________.
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21 / 50
UART stands for_______
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------------ is used to read date from RTC
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The interval timer can operate in _______ modes.
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Interrupt Vector Table (IVT) in short is a _______ bytes sized table.
25 / 50
If we use keep (0, 1000) in a TSR program, the memory allocated to it is
26 / 50
An I/O device cannot be directly connected to the busses so controller is placed between CPU and I/O.
27 / 50
Timer interrupt is a _________.
28 / 50
DCE stands for __________.
29 / 50
In case of synchronous communication a timing signal is required to identify the start and end of a bit.
30 / 50
Which of the following are types of ISR __________.
31 / 50
The interval timer can operate in ____modes.
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33 / 50
Counter register can be used to divide clock signal.
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Interrupt service number is usually placed in ____________ register.
35 / 50
Standard PC can have _____ PPI.
36 / 50
If CPUID instruction is not present then the processor can be a
37 / 50
The following command “outportb (0x61,inportb(0x61) & 0xFC);” will
38 / 50
The BIOS interrupt ________ can be used to configure RTC.
39 / 50
DTE is ___________
40 / 50
Standard PC operates in two modes in terms of memory which are
41 / 50
In self test mode the output of the UART is routed to its input.
42 / 50
To store each character in keyboard buffer ____ bytes are required.
43 / 50
BIOS support _____________UARTS as COM ports.
44 / 50
Hardware Interrupts are __________.
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We have set the bit No. 7 of IMR(Interrupt Mask Register) to unmask the Interrupt so that interrupt _____ can occur at ____ line.
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DTE is ____________.
47 / 50
Int 14H __________ can be used to set the line parameter of the UART or COM port.
48 / 50
Command register is an _____ bit register
49 / 50
The bit ______ of Line control register in UART, if cleared will indicate that DLL is the data register.
50 / 50
______ is Disk interrupt.
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