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SSC Scientific Assistant IMD Computer Science Questions 121 to 140

Hi students, Welcome to Amans Maths Blogs (AMBIPi). Are you preparing for SSC Scientific Assistant and looking for SSC Scientific Assistant IMD Computer Science Questions 121 to 140 with Answer Keys? In this article, you will get previous year questions of SSC Scientific Assistant IMD (Indian Meteorological Department), which helps you in the preparation of government job of SSC IMD Scientific assistant.

SSC Scientific Assistant IMD Previous Year Questions

SSC Scientific Assistant Question No: 121

Am operating system contains 3 user processes each requiring, 2 units of resource R. The minimum number of units of R such that no deadlock will ever  occur is

Option A : 2

Option B : 4

Option C : 7

Option D : 5

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Option B : 4

SSC Scientific Assistant Computer Science Question No: 122

Mutual exclusive problem occurs ______.

Option A : between two disjoint processes that do not interact

Option B : among processes that share resources

Option C : among processes that do not use the same resource

Option D : none of these

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Option C : among processes that do not use the same resource

SSC Scientific Assistant Previous Year Question No: 123

Memory protection is of no use in a ______.

Option A : single user system

Option B : non-multi programming system

Option C : non- multitasking system

Option D : none of these

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Option D : none of these

SSC Scientific Assistant IMD Question No: 124

Memory protection is of no use in a

Option A : single user system

Option B : non- multi programming system

Option C : non-multitasking system

Option D : none of these

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Option D : none of these

SSC Scientific Assistant Question Paper No: 125

Disk scheduling involves deciding

Option A : which disk should be accessed next

Option B : the order in which disk access request must be serviced

Option C : the physical location where files should be accessed in a disk

Option D : none of these

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Option B : the order in which the disk access request must be serviced

SSC Scientific Assistant Previous Year Paper Question No: 126

For showing which of the following is dirty bit used?

Option A : Page with corrupted data

Option B : Wrong page in a memory

Option C : Page that is being modified after loaded into cache memory

Option D : Page that is less frequently accessed

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Option C : Page that is being modified after loaded into cache memory

SSC Scientific Assistant Previous Year Paper Computer Science Question No: 127

Which of the following is the service not supported by operating system?

Option A : Protection

Option B : Accounting

Option C : Compilation

Option D : I/O Accounting

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Option C : Compilation

Scientific Assistant Previous Year Question Paper No: 128

For which of the following is the first-fit, best-fit, and the worst-fit algorithms used?

Option A : contiguous allocation of memory

Option B : linked allocation of memory

Option C : indexed allocation of memory

Option D : all options are correct

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Option A : contiguous allocation of memory

IMD Scientific Assistant Question Paper No: 129

Which of the following is/are a single user operating system (s)?

Option A : MS-DOS

Option B : UNIX

Option C : Both MS-DOS and UNIX

Option D : None of these

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Option A : MS-DOD

Previous Year Question SSC Scientific Assistant: 130

In a multiprogramming environment

Option A : the processor executes more than one process a time

Option B : the programs are developed by more than one person

Option C : more than one process resides in the memory

Option D : a single user can execute many programs at a same time

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Option C : more than one process resides in the memory

SSC IMD Scientific Assistant Question No: 131

The size of virtual memory depends on the size of the

Option A : data bus

Option B : main memory

Option C : address bus

Option D : none of these

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Option C : address bus

SSC IMD Scientific Assistant Computer Science Question No: 132

Which of the following statements is true?

Option A : Overlays are used to increase the size of memory

Option B : Overlays are used to increase the logical address space

Option C : When Overlays are used, the size of process is not limited to the size of memory

Option D : Overlays are used whenever the physical address space is smaller than logical address space

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Option C : When Overlays are used, the size of process is not limited to the size of memory

SSC Scientific Assistant IMD Previous Year Question No: 133

Consider a set of processes whose arrival time, CPU time needed and the priority are given below. If the CPU scheduling policy is FCFS, what will be the average waiting time?

Option A : 12.8 ms

Option B : 8 ms

Option C : 16 ms

Option D : none of these

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Option A : 12,8 ms

SSC Scientific Assistant IMD Question No: 134

In partitioned memory allocation scheme, the

Option A : best-fit algorithms is always better than first-fit algorithm.

Option B : first-fit algorithms is always better than best-fit algorithms.

Option C : superiority of the first-fit and the best-fit algorithms depends on the sequence of memory requests

Option D : none of these

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Option C : superiority of the first-fit and the best-fit algorithms depends on the sequence of memory requests

SSC IMD Scientific Assistant Question Paper No: 135

Cascading termination refers to the termination of all child processes before the parent terminates

Option A : normally

Option B : abnormally

Option C : normally or abnormally

Option D : none of these

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Option A : normally

SSC IMD Scientific Assistant Previous Year Paper Question No: 136

Which of the following is the most suitable scheduling scheme in a real-time operating system?

Option A : round-robin

Option B : first-come- first-server

Option C : preemptive scheduling

Option D : random scheduling

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Option C : preemptive scheduling

SSC IMD Scientific Assistant Previous Year Paper Computer Science Question No: 137

If there are 32 segments, each of the size is 1 kbytes, than the logical address should have

Option A : 13 bits

Option B : 14 bits

Option C : 15 bits

Option D : 16 bits

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Option C : 15 bits

IMD Scientific Assistant Previous Year Question Paper No: 138

When a sub-routine is called

Option A : It defines a new locality

Option B : It is in same locality from where it was called

Option C : It does not define a new locality

Option D : None of these

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Option A : It defines a new locality

IMD Scientific Assistant Question Paper No: 139

Consider the following page reference string:

1 2 3 4 2 1 5 6 2 1 2 3 7 6 3 2 1 2 3 6  For LRU page replacement algorithms with 4 frames, the number of page faults is:

Option A : 14

Option B : 5

Option C : 10

Option D : 11

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Option C : 10

Previous Year Question SSC IMD Scientific Assistant: 140

Which of the following statements is true?

Option A : Thrashing increases the CPU utilization

Option B : Thrashing decreases the CPU utilization

Option C : Thrashing keeps the CPU utilization constant

Option D : None of these

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Option B : Thrashing decreases the CPU utilization

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