Operating systems concept MCQ Test 34

UGC-NET/GATE Multiple Choice Questions for Operating System.

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Question 1
In MS-DOS 5.0, which is the number that acts as a code to uniquely identify the software product?
A
DOS
B
MS DOS
C
5.0
D
None of the above
Question 2
Backups should be done
A
weekly for most installations
B
as several image copies, followed by an incremental
C
as several incrementals, followed by an image copy
D
None of the above
Question 3
A program
A
is the device where information is stored
B
is a sequence of instructions
C
is typically characterized by interactive processing and time of the CPU's time to allow quick response to each user.
D
None of the above
Question 4
A binary semaphore is a semaphore with integer values :
  1. 1
  2. -1
  3. 0
  4. 0.5
A
I and IV
B
II and III
C
II, III and IV
D
I and III
Question 5
What are cryptographic and logical separation ?
  1. logical separation in which process use different physical objects like separate printers
  2. cryptographic separation in which process having different security requirement at different times
  3. Logical separation In which users operate under illusion that no other processes exist
  4. cryptographic sepration In which processes conceal their datomputations
A
I and III
B
II and III
C
II, III and IV
D
III and IV
Question 6
Thread pools help in :
A
servicing multiple requests using one thread
B
servicing a single request using multiple threads from the pool
C
faster servicing of requests with an existing thread rather than waiting to create a new thread
D
none of the above
Question 7
What is characteristics of Authorization ?
A
RADIUS and RSA
B
3 way handshaking with syn and fin.
C
Multilayered protection for securing resources
D
Deals with privileges and rights
Question 8
The interrupt vector contains :
A
the interrupts
B
the memory addresses of specialized interrupt handlers
C
the identifiers of interrupts
D
the device addresses
Question 9
If exec is called immediately after forking,
  1. the program specified in the parameter to exec will replace the entire process.
  2. all the threads will be duplicated
  3. all the threads will not be duplicated
  4. None of these
A
I and II
B
II and III
C
II, III and IV
D
I and III
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