CS401- Computer Architecture and Assembly Language Programming McQs collection Part9

CS401- Computer Architecture and Assembly Language Programming  McQs collection Part8

Question No: 1 ( M a r k s: 1 )

Sun SPARC Processor has a fixed ______________ instruction size.

1.                        16bit

2.                        32bit

3.                        64bit

4.                        20bit

Question No: 2 ( M a r k s: 1 )

When the subprogram finishes, the ____________________ retrieves the return address from the stack and transfers control to that location.

1.                        RET instruction

2.                        CALL instruction

3.                        POP instruction

4.                        Jump instruction

Question No: 3 ( M a r k s: 1 )

A 32 bit address register can access upto __________ of memory.

• 1 GB
• 6 GB
• 4 GB
• 2 GB

Question No: 4 ( M a r k s: 1 )

The value of a segment register when the processor is running under protected mode is called

1.                        segment descriptor

2.                        segment selector

3.                        global descriptor table

4.                        protected register

Question No: 5 ( M a r k s: 1 )

FS and GS are two ___________________ in protected mode.

1.                        segment registers

2.                        segment selectors

3.                        stack pointers

4.                        register pointers

Question No: 6 ( M a r k s: 1 )

IRQ 0 interrupt have _______________ priority

1.                        low

2.                        medium

3.                        highest

4.                        lowest

Question No: 7 ( M a r k s: 1 )

IDT stands for ______________________.

1.                        interrupt descriptor table

2.                        individual descriptor table

3.                        inline data table

4.                        interrupt descriptor table

Question No: 8 ( M a r k s: 1 )

Every bit of line status in serial port conveys _____________ information.

1.                        different

2.                        same

3.                        partial

4.                        full

Question No: 9 ( M a r k s: 1 )

There are total _______________ bytes in a standard floppy disk.

1.                        1444k

2.                        1440k

3.                        1280k

4.                        2480k

Question No: 10 ( M a r k s: 1 )

An 8x16 font is stored in _________________ bytes.

• 8
• 16
• 4
• 20

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. Serial Port is also accessible via       I/O      ports ,        COM 1     is accessible via ports 3F8-3FF while    COM 2     is accessible via 2F8 -2FF.

The first register at 3F8 is the    Transmitter   holding register if written to and the receiver    buffer  register if read from.

Other register of our interest include 3F9 whose      Bit  0   must be set to enable received data available interrupt and    Bit    1     must be set to enable transmitter holding register empty interrupt.

(Transmitter, COM 1, I/O ports , COM2. bit 0 , Buffer , 3FA)

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