51.
Match the following for Unix rue system:
List-I List-II
a. Boot
block i. Information about file
system,
free
block list, free inode list etc.
b. Super block ii. Contains operating system files
as well as program and data files
created by users.
c. Inode block iii. Contains boot program and
partition table.
d. Data
block iv. Contains a table for every file
in
the
file system. Attributes of files
are
stored here.
Codes:
a b
c d
(1) iii i ii iv
(2) iii i iv ii
(3) iv iii ii i
(4) iv iii i ii
Answer: 2
52. Some
of the criteria for calculation of priority of a process are:
a. Processor
utilization by an individual process.
b. Weight
assigned to a user or group of users.
c. Processor
utilization by a user or group of processes.
In fair
share scheduler, priority is calculated based on:
(1) only (a)
and (b)
(2) only (a)
and (c)
(3) (a), (b)
and (c)
(4) only (b)
and (c)
Answer: 3
53. One
of the disadvantages of user level threads compared to Kernel level threads is
(1) If a
user level thread of a process executes a system call, all threads in that
process are blocked.
(2)
Scheduling is application dependent.
(3) Thread
switching doesn’t require kernel mode privileges.
(4) The
library procedures invoked for thread management in user level threads are
local procedures.
Answer: 1
54. Which
statement is not correct about “init” process in Unix?
(1) It is
generally the parent of the login shell.
(2) It has
PID 1.
(3) It is the
first process in the system.
(4) Init
forks and execs a ‘getty’ process at every port connected to a terminal.
Answer: 3
55. Consider
following two rules R1 and R2 in logical reasoning in Artificial Intelligence
(AI):
(1) Only R1
is correct.
(2) Only R2
is correct.
(3) Both R1
and R2 are correct.
(4) Neither
R1 nor R2 is correct.
Answer: 4
56. Consider
the following AO graph:
Which is the
best node to expand next by AO* algorithm?
(1) A
(2) B
(3) C
(4) B and C
Answer: 1
57. In
Artificial Intelligence (AI), what is present in the planning graph?
(1) Sequence
of levels
(2) Literals
(3)
Variables
(4)
Heuristic estimates
Answer: 1
58. What
is the best method to go for the game playing problem?
(1) Optimal
Search
(2) Random
Search
(3)
Heuristic Search
(4)
Stratified Search
Answer: 3
59. Which
of the following statements is true?
(1) The
sentence S is a logical consequence of S1,..., Sn if and
only if S1˄S2˄........˄Sn→S is satisfiable.
(2) The
sentence S is a logical consequence of S1,..., Sn if and
only if S1˄S2˄........˄Sn→S is valid.
(3) The
sentence S is a logical consequence of S1,..., Sn if and
only if S1˄S2˄........˄Sn˄¬S is consistent.
(4) The
sentence S is a logical consequence of S1,..., Sn if and
only if S1˄S2˄........˄Sn˄S is inconsistent.
Answer: 2
60. The
first order logic (FOL) statement ((Rá´ Q)˄(Pá´ ¬Q)) is equivalent to which of the
following?
(1) ((Rá´ ¬Q)á´§(Pá´ ¬Q)á´§(Rá´ P))
(2) ((Rá´ Q)á´§(Pá´ ¬Q)á´§(Rá´ P))
(3) ((Rá´ Q)á´§(Pá´ ¬Q)á´§(Rá´ ¬P))
(4) ((Rá´ Q)á´§(Pá´ ¬Q)á´§(¬Rá´ P))
Answer: 2
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