CS609 Midterm MCQs by VU Topper RM

Q1. Vu-Topper RM (1 marks)

Bit no. ___ of EFLAG is used for alignment check

Q2. Vu-Topper RM (1 marks)

In ___ each byte is needed to be encapsulated in start and end Synchronous Communication

Asynchronous Communication

Q3. Vu-Topper RM (1 marks)

Base address of LPT1 port in BIOS Data Area is ___ 08:40

40:08

Q4. Vu-Topper RM (1 marks)

An I/O device cannot be directly connected to the buses so they generally require a ___ to be placed between the CPU and I/O device

Controller

Pipeline

Q5. Vu-Topper RM (1 marks)

To set the Interrupt Vector Table (IVT) means that to change the ___ sized interrupt vector within the IVT Quad Word

Double Word

Q6. Vu-Topper RM (1 marks)

DB25 connector is used to connect ___ Address Bus

PPI

Q7. Vu-Topper RM (1 marks)

In self-test mode the output of UART is routed to its input

True

False

Q8. Vu-Topper RM (1 marks)

Bit number ___ of port 64H Status register used for input buffer full

Q9. Vu-Topper RM (1 marks)

The device which requires timing signal is called ___

Synchronous

Asynchronous

Q11. Vu-Topper RM (1 marks)

The ___ register of Real Time Clock is used to enable interrupt on various events like alarm time and time-up duration Status Register A

Status Register B

Q12. Vu-Topper RM (1 marks)

DTE is ___

Data Terminal Equipment

Data Transmitting Equipment

Q13. Vu-Topper RM (1 marks)

First two bytes of any Far address contains ___ address Segment

Offset

Q14. Vu-Topper RM (1 marks)

In the context of Keyboard Interface, ___ means Typematic rate will be sent in next byte 0xFF

0xF3

Q15. Vu-Topper RM (1 marks)

A software interrupt does not require ___ Memory

EOI(End of Interrupt)

Q16. Vu-Topper RM (1 marks)

Keyboard buffer is ___ bytes in size

Q17. Vu-Topper RM (1 marks)

The address of partition block on hard disk is ___

head # = 1, track# = 0 and sector # = 1

head # = 0, track# = 0 and sector # = 0

Q18. Vu-Topper RM (1 marks)

There are ___ main types of serial communication

Q19. Vu-Topper RM (1 marks)

A code 0xFA on the port 60H (Keyboard Interface) indicates that the byte has been received ___

Properly

With Errors

Q20. Vu-Topper RM (1 marks)

Bit number ___ of port 64H Keyboard Status Register indicate status of Time-Out error during output

Q21. Vu-Topper RM (1 marks)

Clock status register ___ is main control register A

B

Q22. Vu-Topper RM (1 marks)

There are differences in mechanism of invocation of interrupt and event driven procedures

Yes

No

Q23. Vu-Topper RM (1 marks)

A compiled TSR program has ___ extension .XLS

.C

Q24. Vu-Topper RM (1 marks)

___ interrupt is used to read time from Real Time Clock

1A/02H

1A/03H

Q25. Vu-Topper RM (1 marks)

If UART is running in Self-Test Mode, then all the input from the UART is directed to the ___ Upper part of the screen

Lower part of the screen

Q26. Vu-Topper RM (1 marks)

We have set the bit No. 7 of IMR (Interrupt Mask Register) to unmask the Interrupt so that interrupt ___ can occur at ___ line

0xf, IRQ 7

0xa, IRQ 6