INT 0x13 service 0x03 is used to _________.

• A) Get drive parameter
• B) Read disk sector
• C) Write disk sector
• D) Reset disk sector

While using INT 10 for writing graphic pixel on screen, which of the following registers hold the information about pixel color?

• A) DH
• B) AL
• C) AH
• D) DL

In DOS, if 'file name' is more than 8-characters then which flags of 'attribute byte' are set

• A) Directory flag, Hidden flag, System flag and Volume label flag
• B) Directory flag and Hidden flag
• C) Directory flag and System flag
• D) System flag and Volume label flag

Which of the following INT 21 service is used to read character from standard input?

• A) 02
• B) 01
• C) 00
• D) 03

In multitasking, which of the following interrupts is used as a scheduler?

• A) INT 16
• B) INT 13
• C) INT 08
• D) INT 21

BIOS video services are broadly classified into ________ categories.

• A) 2
• B) 3
• C) 4
• D) 1

Which of the following is the size of Hard Disk MBR (Master Boot Record)?

• A) 446 bytes
• B) 350 bytes
• C) 512 bytes
• D) 256 bytes

The first sector on hard disk contains the

• A) Partition table
• B) Data size
• C) Hard disk size
• D) Sector size

During multitasking, ____________ is used to get control from the program without letting the program know about it.

• A) IRQ 1
• B) IRQ 7
• C) IRQ 0
• D) IRQ 5

Which of the following symbols is used to terminate a string in assembly language?

• A) #
• B) $
• C) ;
• D) !

Which of the following services of INT 10 is used to write graphic pixel on the screen ?

• A) 0x0B
• B) 0x0C
• C) 0x0D
• D) 0x0A

Changing and restoring the state of Central Processing Unit (CPU) is called ________________.

• A) Multithreading
• B) Multitasking
• C) Context Switching
• D) Thrashing

"INT13 --BIOS disk services" generally uses which register to return the 'error flag' ?

• A) AL
• B) CF
• C) AH
• D) DL

In case of COM file, first command line parameter is stored at ___ offset of 'program segment prefix'

• A) 0x84
• B) 0x80
• C) 0x86
• D) 0x82

As compared to _________ , ___________ provides more cooked services.

• A) BIOS, DOS
• B) DOS,OS
• C) OS, DOS
• D) DOS, BIOS

Which of the following services of INT 10 is used for writing the string?

• A) 0x13
• B) 0x11
• C) 0x10
• D) 0x12

In case of COM file, maximum length of parameters passed through command line can be ___

• A) 511 bytes
• B) 255 bytes
• C) 63 bytes
• D) 127 bytes

Which of the following registers hold the page number for using the write string service of INT 10?

• A) BH
• B) CL
• C) BL
• D) AH

On executing INT 0x21 service 0x3D, if file is successfully opened then

• A) CF will contain 1
• B) ZF will contain 1
• C) ZF will contain 0
• D) CF will contain 0

The thread registration code initializes the Process Control Block (PCB) and adds it to the linked list. The ________________, then gives it a turn.

• A) scheduler
• B) interpreter
• C) linker
• D) assembler