System Programming (CS609)

1. There are two main types of interrupts, namely

   1. PC based and Window based
   2. Hardware based and Kernal based
   3. Hardware interrupts and Software interrupts
   4. None of the given

2. Standard PC operates in two modes in terms of memory which are

   1. Real mode and Extended Mode
   2. Base mode and Memory Mode
   3. Real mode and protected mode
   4. None of the given

3. BPB stands for ________.

   1. BIOS parameter block
   2. BIOS processing block
   3. Base processing block
   4. BIOS partition block

4. The Function of I/O controller is to provide ________.

   1. I/O control signals
   2. Buffering
   3. Error Correction and Detection
   4. All of given

5. IVT is a table containing ______ byte entries each of which is a far address of an interrupt service routine.

   1. 2
   2. 4
   3. 8
   4. 16

6. The ______ service # is not used in any interrupt.

   1. 01
   2. 02
   3. 03
   4. FF

7. To set the interrupt vector means is to change the double word sized interrupt vector within the IVT.

   1. True
   2. False

8. If the following function, keep(1, 1000); is called in the TSR program, it means that ________ No. of bytes are reserved in the memory.

   1. 8000
   2. 16000
   3. 32000
   4. 64000

9. The service number is usually placed in the ________ register.

   1. AL
   2. CL
   3. AH
   4. AX

10. The output on the monitor is controlled by a controller called __________ within the PC.

    1. Video controller
    2. Bus controller
    3. Ram controller
    4. None of the given

11. The keyboard makes use of interrupt number ________ for its input operations.

    1. 9
    2. 10
    3. 11
    4. 12

12. The service _________ is called the keyboard hook service.

    1. 15H/2FH
    2. 15H/4FH
    3. 15H/FFH
    4. None of the given

13. ______ is Disk interrupt.

    1. 10H
    2. 11H
    3. 13H
    4. 14H

14. Which of the following register is used, if you want to block access of any Hardware.

    1. ISR
    2. IMR
    3. IRR
    4. None of the given

15. In keyboard status byte bit no. 2 and 3 are used for ctrl and alt keys respectively. which of the following condition is used to check that Ctrl + Alt keys are pressed. Where: unsigned char far * scr = (unsigned char far *)(0x00400017);

    1. if (((*scr)&12)==12)
    2. if (((*scr)&8)==8)
    3. if (((*scr)&4)==4)
    4. if (((*scr)&2)==2)

16. Total No. of bytes that can be stored in Keyboard Buffer is_________.

    1. 16
    2. 32
    3. 64
    4. 128

17. ________ No. of bytes are used to store the character in the key board buffer.

    1. 1
    2. 2
    3. 4
    4. 8

18. Counter register can be used to divide clock signal.

    1. True
    2. False

19. If we want to produce the shrill voice from the speaker phone then we have to load the _________ divisor value at Port _________.

    1. high, 0x42
    2. low, 0x42
    3. high, 0x22
    4. low, 0x22

20. In order to produce the sound from PC internal Speaker we have to load the _________ bit divisor value at the _________ port.

    1. 8, 0x21
    2. 16, 0x42
    3. 32, 0x22
    4. 64, 0x32

21. If printer is __________ then printer sends back the ACK signal to the printer interface.

    1. idle
    2. busy
    3. out of paper
    4. None of the given

22. _______ store the base address for LPT1.

    1. 40:00H
    2. 40:02H
    3. 40:08H
    4. 40:1AH

23. Int ________ is used to control the printer via the BIOS.

    1. 17H
    2. 18H
    3. 20H
    4. 21H

24. If we want to send printing on the printer then we have to perform following steps.

    1. Initialize printer
    2. Read Status
    3. Check Error
    4. All of the given

25. At IRQ7 Interrupt # __________ is used.

    1. 0x0A
    2. 0x0B
    3. 0x0C
    4. x0F

26. There are two types of communication; synchronous and anti synchronous

    1. True
    2. False

27. DCE is ___________.

    1. Data communication equipment
    2. Dual communication equipment
    3. Data clearing equipment
    4. None of the given

28. There are ________ kinds of serial communication.

    1. 2
    2. 3
    3. 4
    4. 5

29. DTE is _________.

    1. Data terminal equipment
    2. Data transmitting equipment
    3. Dual terminal equipment
    4. None of the given

30. In _______ each byte is needed to be encapsulated in start and end.

    1. Synchronous communication
    2. Asynchronous communication
    3. Both of Synchronous & Asynchronous Communication
    4. None of the given

31. In case of synchronous communication a timing signal is required to identify the start and end of a bit.

    1. True
    2. False

32. _______ is used to identify the cause of interrupt.

    1. Interrupt Enable Register
    2. Interrupt ID register
    3. Interrupt Status register
    4. None of the given

33. BIOS support _________UARTS as COM ports.

    1. 6
    2. 4
    3. 3
    4. 2

34. The baud rate is set in accordance with the divisor value loaded within the UART internal registers base +0 and base +1.

    1. True
    2. False

35. The memory addresses of COM ports remain same for all computers.

    1. True
    2. False

36. DSR stands for _________.

    1. Data set ready
    2. Data service ready
    3. Data stock ready
    4. None of the given

37. Int _________ service 0 can be used to set the line parameter of the URT or COM port.

    1. 14H
    2. 15H
    3. 13H
    4. None of the given

38. Int 14H __________ can be used to set the line parameter of the UART or COM port.

    1. Service # 0
    2. Service # 1
    3. Service # 2
    4. None of the given

39. Int 14H __________ can be used to send a byte.

    1. Service # 0
    2. Service # 1
    3. Service # 2
    4. None of the given

40. The __________ function simply enables the self test facility within the modem control register.

    1. STOn()
    2. SelfTest()
    3. SelfTestOn()
    4. None of the given

41. The _________ function uses the COM port number to receive a byte from the COM port using BIOS services.

    1. initialize()
    2. recievebyte()
    3. recieve()
    4. recievechar()

42. The _________ function initializes COM port whose number is passed as a parameter using BIOS services.

    1. initializecom()
    2. initialize()
    3. recievechar()
    4. None of the given

43. Only _______ ports are important from programming point of view.

    1. 70 and 71H
    2. 71 and 72H
    3. 70 and 72H
    4. 72 and 73H

44. ______whenever received indicates the start of communication and ______ whenever received indicates a temporary pause in the communication.

    1. XON & XOFF
    2. XOFF & XON
    3. XON & YOFF
    4. YON & XOFF

45. ________ is used to read time from RTC.

    1. 1A/02H
    2. 1A/03H
    3. 1A/04H
    4. 1A/05H

46. The BIOS interrupt ________ can be used to configure RTC.

    1. 1AH
    2. 2AH
    3. 3AH
    4. 4AH

47. XON whenever received indicates the start of communication and XOFF whenever received indicates a temporary pause in the communication.

    1. True
    2. False

48. _______ is a device incorporated into the PC to update time even if the computer is off.

    1. Clock counter
    2. ROM
    3. Clock
    4. Real time clock

49. The amount of memory above conventional memory (extended memory) can be determined using the service _______.

    1. 15H/88H
    2. 16H/88H
    3. 17H/88H
    4. 21H/88H

Select a course code for Objective Questions:

ACC311 ACC501 BIF101 BIF401 BIF501 BIO101 BIO201 BIO202 BIO203 BIO204 BIO301 BIO302 BIO303 BIO401 BIO503 BNK603 BT101 BT201 BT301 BT302 BT401 BT402 BT403 BT404 BT405 BT406 BT501 BT504 BT505 BT604 CHE201 CHE301 CS001 CS101 CS201 CS202 CS204 CS301 CS302 CS304 CS311 CS401 CS402 CS403 CS408 CS501 CS502 CS504 CS506 CS508 CS601 CS602 CS604 CS605 CS607 CS609 CS610 CS614 CS707 CS710 ECO401 ECO402 ECO403 ECO404 EDU302 EDU401 EDU402 EDU501 EDU601 ENG101 ENG201 ENG301 ENG501 FIN611 FIN624 FIN625 ISL201 IT430 MCM101 MCM301 MGMT623 MGT101 MGT211 MGT301 MGT401 MGT402 MGT501 MGT502 MGT503 MGT510 MGT601 MGT603 MKT501 MKT610 MKT630 MTH101 MTH202 MTH302 MTH501 MTH601 MTH634 PAK301 PHY101 PHY301 PSY101 PSY403 PSY502 PSY512 SOC101 SOC301 SOC401 STA301 STA630 STA641 ZOO102 ZOO401 ZOO501 ZOO502 ZOO503 ZOO504 ZOO505 ZOO506 ZOO510 ZOO630

Select a course code for Subjective Questions:

ACC311 CS001 CS101 CS201 CS301 CS607 CS701 CS702 CS703 CS704 CS707 CS708 CS710 CS711 CS718 CS721 CS724 ECO401 ECO403 ENG101 ENG301 MGT703 MTH501 STA301