CS401 Fall 2011 Final Term Feb 2012 – VU Current Paper – 08 Feb 2012

Question No: 5 ( Marks: 1 ) – Please choose one
VESA VBE 2.0 is a standard for
> High resolution Mode
> Low resolution Mode
> Medium resolution Mode
> Very High resolution Mode

Question No: 6 ( Marks: 1 ) – Please choose one
Which of the following gives the more logical view of the storage medium
> BIOS
> DOS
> Both
> None
Question No: 10 ( Marks: 1 ) – Please choose one
The physical address of IDT( Interrupt Descriptor Table) is stored in _______
> GDTR
> IDTR
> IVT
> IDTT
Question No: 11 ( Marks: 1 ) – Please choose one
n NASM an imported symbol is declared with the ………………………. while and exported symbol is declared with the……………………….
> Global directive, External directive
> External directive, Global directive
> Home Directive, Foreign Directive
> Foreign Directive, Home Directive

Question No: 12 ( Marks: 1 ) – Please choose one
In 68K processors there is a …………………… program counter (PC) that holds the address of currently executing instruction
> 8bit
> 16bit
> 32bit
> 64bit

Question No: 18 ( Marks: 1 ) – Please choose one
INT 21 service 01H is used to read character from standard input with echo. It returns the result in ______ register.
> AL
> BL
> CL
> BH
Question No: 19 ( Marks: 1 ) – Please choose one
BIOS sees the disks as
> logical storage
> raw storage
> in the form of sectors only
> in the form of tracks only
Question No: 22 ( Marks: 1 ) – Please choose one
In 9pin DB 9, RI (Ring Indicator) is assigned on pin number
> 6
> 7
> 8
> 9

Question No: 23 ( Marks: 1 ) – Please choose one
Motorola 68K processors have ………………….. 23bit general purpose registers.
> 4
> 8
> 16
> 32

Question No: 26 ( Marks: 1 ) – Please choose one
Which flags are NOT used for mathematical operations?
> Carry, Interrupt and Trap flag.
> Direction, Interrupt and Trap flag.
> Direction, Overflow and Trap flag.
> Direction, Interrupt and Sign flag.
In DOS input buffer, the number of characters actually read on return is stored in ___________ byte.
> third
> fourth
> first
> second
Question No: 12 ( M a r k s: 1 )
In 68K processors there is a 32bit …………………. that holds the address of currently executing instruction
> Program counter
> Stack pointer
> Register
> Stack
Question No: 18 ( M a r k s: 1 )
In programmable interrupt controller, which of the following ports is referred as a control port?
> 19
> 20
> 21
> 22
Question No: 21 ( M a r k s: 1 )
In 9pin DB 9, which pin number is assigned to TD (Transmitted Data) ?
> 1
> 2
> 3
> 4

Question No: 21 ( M a r k s: 1 )
In 9pin DB 9, which pin number is assigned to Data Terminal Ready (DTR)
> 1
> 2
> 3
> 4
Question No: 21 ( M a r k s: 1
In 9pin DB 9, which pin number is assigned to Clear to Send (CTS)

> 1
> 2
> 3
> 8
Question No: 24 ( M a r k s: 1 )
The table index (TI) is set to _____ to access the GDT (Global Descriptor Table).
> 1
> 0
> -1
> -2

Question No: 24 ( M a r k s: 5)
MOtorolla 68K processor is different from X86 how ?
Q1) define condition when ZF is set or clear? 2 marks
Q2) types of User descriptor?
Q3) system descriptor ?
Q4) define interrupt INT 0*80
Q5) draw serial port connector? 5marks?
Q6) define extended ADD with carry? 5 marks?
Q7) data movement? 5 marks

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