Information Technology Reference
In-Depth Information
(c)
IRQ4
(d)
IRQ7
2.4.12
Which interrupt does the secondary serial port of a PC (COM2:) normally use:
(a)
IRQ0
(b)
IRQ3
(c)
IRQ4
(d)
IRQ7
2.4.13
Which interrupt does the system timer on the PC use:
(a)
IRQ0
(b)
IRQ3
(c)
IRQ4
(d)
IRQ7
2.4.14
Which interrupt was used to increase the amount of interrupts from 8 to 16:
(a)
IRQ0
(b)
IRQ1
(c)
IRQ2
(d)
IRQ15
2.4.15
Which interrupt is used by the keyboard:
(a)
IRQ0
(b)
IRQ1
(c)
IRQ2
(d)
IRQ15
2.4.16
What does ISR stand for:
(a)
Interval Status Register
(b)
Interrupt Status Register
(c)
Interrupt Service Routine
(d)
Interrupt Standard Routine
2.4.17
How is isolated memory differentiated from memory added I/O:
(a)
Different address bus
(b)
Different data bus
(c)
Control line differentiates between them (Memory/Isolated)
(d)
There is no differentiation as they are physically the same
2.4.18
How many addresses can be accessed in the address range 0000h to FFFFh:
(a)
32 768 (32 kB)
(b)
65 536 (64 kB)
(c)
262 144 (256 kB)
(d)
1 048 576 (1 MB)
2.4.19
How much physical memory can a DOS-compatible program access:
(a)
32 768 (32 kB)
(b)
65 536 (64 kB)
(c)
262 144 (256 kB)
(d)
1 048 576 (1 MB)
2.4.20
Which address is the interrupt control port register:
(a)
0002h
(b)
0020h
(c)
0200h
(d)
2000h
2.4.21
Which is normally the base address for the primary parallel port:
(a)
0378h
(b)
0278h
(c)
03F8h
(d)
02F8h
