Microprocessors Questions and Answers – Salient Features of 80386DX

This set of Microprocessor Multiple Choice Questions & Answers (MCQs) focuses on “Salient Features of 80386DX”.

1. The 80386DX is a processor that supports
a) 8-bit data operand
b) 16-bit data operand
c) 32-bit data operand
d) all of the mentioned
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2. The 80386DX has an address bus of
a) 8 address lines
b) 16 address lines
c) 32 address lines
d) 64 address lines
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3. The number of debug registers that are available in 80386, for hardware debugging and control is
a) 2
b) 4
c) 8
d) 16
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4. The memory management of 80386 supports
a) virtual memory
b) paging
c) four levels of protection
d) all of the mentioned
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5. The 80386 enables itself to organize the available physical memory into pages, which is known as
a) segmentation
b) paging
c) memory division
d) none of the mentioned
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6. The 80386 consists of
a) on-chip address translation cache
b) instruction set of predecessors with upward compatibility
c) virtual memory space of 64TB
d) all of the mentioned
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7. 80386DX is available in a grid array package of
a) 64 pin
b) 128 pin
c) 132 pin
d) 142 pin
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8. The operating frequency of 80386DX is
a) 12 MHz and 20 MHz
b) 20 MHz and 33 MHz
c) 32 MHz and 12 MHz
d) all of the mentioned
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9. The 80386 in its protected mode, in its virtual mode of operation, can run the applications of
a) 8086
b) 80286
c) 80287
d) 80387
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10. The 80386 in protected mode, supports all software written for
a) 8086 and 80287
b) 80286 and 80287
c) 80287 and 80387
d) 80286 and 8086
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