Questions
61
In Reverse Polish notation, expression A*B+C*D is written as
Answer: AB*CD*+
63
Assembly language
Answer: uses alphabetic codes in place of binary numbers used in machine language
64
In computers, subtraction is generally carried out by
Answer: 2’s complement
65
What characteristic of RAM memory makes it not suitable for permanent storage?
Answer: it is volatile
67
The average time required to reach a storage location in memory and obtain its contents is called the
Answer: access time
69
The idea of cache memory is based
Answer: on the property of locality of reference
70
Which of the following is lowest in memory hierarchy?
Answer: Secondary memory
71
The addressing mode used in an instruction of the form ADD X Y, is
Answer: index
72
If memory access takes 20 ns with cache and 110 ns with out it, then the ratio (cache uses a 10 ns memory) is
Answer: 90%
73
In a memory-mapped I/O system, which of the following will not be there?
Answer: LDA
76
Write Through technique is used in which memory for updating the data
Answer: Cache memory
78
Generally Dynamic RAM is used as main memory in a computer system as it
Answer: has higher speed
79
In signed-magnitude binary division, if the dividend is (11100) 2 and divisor is (10011) 2 then the result is
Answer: (10100) 2
