Question 11 : In segmentation, each address is specified by :
1. a segment number & offset
2. an offset & value
3. a value & segment number
4. a key & value
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Question 12 : In paged memory systems, if the page size is increased, then the internal fragmentation generally :
1. becomes less
2. becomes more
3. remains constant
4. none of the mentioned
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Question 13 : To obtain better memory utilization, dynamic loading is used. With dynamic loading, a routine is not loaded until it is called. For implementing dynamic loading,
1. special support from hardware is required
2. special support from operating system is essential
3. special support from both hardware and operating system is essential
4. user programs can implement dynamic loading without any special support from hardware or operating system
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Question 14 : In a paged memory, the page hit ratio is 0.35. The required to access a page in secondary memory is equal to 100 ns. The time required to access a page in primary memory is 10 ns. The average time required to access a page is :
1. 3.0 ns
2. 68.0 ns
3. 68.5 ns
4. 78.5 ns
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Question 15 : When there is a large logical address space, the best way of paging would be :
1. not to page
2. a two level paging algorithm
3. the page table itself
4. all of the mentioned
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Question 16 : Illegal addresses are trapped using the _____ bit.
1. error
2. protection
3. valid – invalid
4. access
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Question 17 : Memory protection in a paged environment is accomplished by :
1. protection algorithm with each page
2. restricted access rights to users
3. restriction on page visibility
4. protection bit with each page
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Question 18 : The percentage of times a page number is found in the TLB is known as :
1. miss ratio
2. hit ratio
3. miss percent
4. None of the mentioned
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Question 19 : An ______ uniquely identifies processes and is used to provide address space protection for that process.
1. address space locator
2. address space identifier
3. address process identifier
4. None of the mentioned
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Question 20 : If a page number is not found in the TLB, then it is known as a :
1. TLB miss
2. Buffer miss
3. TLB hit
4. All of the mentioned
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