CS609-System Programming Mid-Term Grand Quiz Fall 2021

 MID-TERM GRAND QUIZ
 FALL 2020

Question No 1:

DCE (Raise For Success) is  ________.

• Data Communication Equipment Correct
• Dual Communication Equipment
• Data Cleaning Equipment
• Data Control Equipment

Question No 2:

Timer interrupt (Raise For Success) approximately occurs ______ times every second.

• 10.8
• 12.8
• 18.0
• 18.2 Correct

Question No 3:

Suppose TX has current timer count stored in it and TIME is a pointer (Raise For Success) to timer count, Now this while loop will produce a delay of ________.

• Four seconds
• Quarter of a second Correct
• Eight seconds
• Half of a second

Question No 4:

_______ register is (Raise For Success) used to store interrupt service number.

• AL Correct
• DH
• AH
• CH

Question No 5:

In case of asynchronous communication a timing, signal in not required to (Raise For Success) identify ________.

• Start of the bit
• End of the bit
• Both start and end of the bit Correct
• Middle of the bit

Question No 6:

Interrupt ______ is used (Raise For Success) for keyboard input operations.

• 14
• 21
• 65
• 9 Correct

Question No 7:

Interrupt 9 is (Raise For Success) used to read scan code from ______.

• CPU
• Scanner
• Keyboard Correct
• Camera

Question No 8:

UART is a device (Raise For Success) used for _______ serial communication.

• Synchronous
• Asynchronous Correct

Question No 9:

Int86 () has ______ (Raise For Success) parameters.

• 0
• 1
• 2
• 3 Correct

Question No 10:

Bit number _________ of port 64H of keyboard status Register indicate (Raise For Success) status of Time-Out error during input.

• 5
• 6
• 7 Correct
• 4 

Question No 11:

In standard (Raise For Success) PC _______ DMA’s can be cascaded.

• 2 Correct
• 3
• 4
• 8

Question No 12:

The bit ______ of Line control register in UART, if set indicates that (Raise For Success) the DLL and DLM will act as the divisor register.

• 1
• 3
• 5
• 7 Correct

Question No 13:

Control Word (Raise For Success) controls the _______ rate of keyboard.

• Degree
• Frequency
• Timing
• Type matric Correct

Question No 14:

_______ is used (Raise For Success) to set date.

• 1A/022H
• 1A/03H
• 1A/04H
• 1A/05H Correct

Question No 15:

If we want to send printing command on the printer then we have (Raise For Success) to perform following steps.

• Initialize printer
• Read status
• Check error
• Initialize, read status and error checking Correct

Question No 16:

BPB stands (Raise For Success) for _______.

• Base processing block
• BIOS partition block
• BIOS parameter block Correct
• BIOS processing block

Question No 17:

If a device driver needs to change (Raise For Success) of CAPS LOCK on keyboard then, ______ should be written on the keyboard.

• Control Byte
• LED Status Byte
• CAPS LOCK Byte Correct
• Telematics Rate

Question No 18:

Total number of (Raise For Success) bytes that can be stored in Keyboard Buffer is _______.

• 16
• 32 Correct
• 64
• 128

Question No 19:

The keyboard hook service is always called by interrupt ________ after acquiring (Raise For Success) the scan code from keyboard port.

• 8H
• 9H Correct
• 10H
• 21H

Question No 20:

______ is used to (Raise For Success) control the printer via BIOS.

• Int 07H
• Int 09H
• Int 17H Correct
• Int 23H

Question No 21:

The keyboard (Raise For Success) buffer is a memory area reserved in the _____.

• BIOS Data Area Correct
• BOS Data Area
• Kernel
• Register

Question No 22:

_______notifies the end of interrupt (EOI) to the programmable (Raise For Success) interrupt controller?

• Programmer
• Microprocessor Correct
• Operating System
• User

Question No 23:

The scan code for a (Raise For Success) key pressed would be available at port number ______.

• Port 20
• Port 40
• Port 60 Correct
• Port 80

Question No 24:

The distinguishing factor between intel coprocessor 80287 and 80387 (Raise For Success) is that only _____ allow to reserve the sign of infinity.

• 80387 Correct
• 80287

Question No 25:

In the Counter Register of Interval Timer, bit number 3 changes (Raise For Success) its value between 0 and 1 within ________ clock cycles.

• 1
• 2
• 4
• 16 Correct

Question No 26:

In real time clock, when status register D indicates 0 then it (Raise For Success) shows that the batter is ______.

• Usable
• Correct
• Dead Correct
• Genuine

Question No 27:

Bit number _____ of (Raise For Success) port 64H of Keyboard Status Register is used for parity error checking.

• 4
• 5
• 6
• 7 Correct

Question No 28:

Boot block is a special block on disk, which contains information (Raise For Success) about the _______.

• BIOS
• Operating System Correct
• Users
• Customer

Question No 29:

Is this statement correct?

“I/O devices (Raise For Success) are directly connected to the CPU”

• Yes 
• No Correct

Question No 30:

In Self-Test mode (Raise For Success) of UART, the output of UART is _____ its input.

• Different from Correct
• Routed back to
• Disconnected from
• Interchanged with