51.
Consider
an imaginary disk with 40 cylinders. A request come to read a block on cylinder
11. While the seek to cylinder 11 is in progress, new requests come in for
cylinders 1, 36, 16, 34, 9 and 12 in that order. The number of arm motions
using shortest seek first algorithm is
(A) 111 (B) 112
(C) 60 (D) 61
Answer: D
52.
An
operating system has 13 tape drives. There are three processes P1, P2 & P3.
Maximum requirement of P1 is 11 tape drives, P2 is 5 tape drives and P3 is 8
tape drives. Currently, P1 is allocated 6 tape drives, P2 is allocated 3 tape
drives and P3 is allocated 2 tape drives. Which of the following sequences
represent a safe state ?
(A) P2 P1 P3 (B) P2 P3 P1
(C) P1 P2 P3 (D) P1 P3 P2
Answer: A
53.
Monitor
is an Interprocess Communication (IPC) technique which can be described as
(A) It is higher level
synchronization primitive and is a collection of procedures, variables, and
data structures grouped together in a special package.
(B) It is a non-negative
integer which apart from initialization can be acted upon by wait and signal
operations.
(C) It uses two
primitives, send and receive which are system calls rather than language constructs.
(D) It consists of the
IPC primitives implemented as system calls to block the process when they are
not allowed to enter critical region to save CPU time.
Answer: A
54.
In a
distributed computing environment, distributed shared memory is used which is
(A) Logical combination
of virtual memories on the nodes.
(B) Logical combination
of physical memories on the nodes.
(C) Logical combination
of the secondary memories on all the nodes.
(D) All of the above
Answer: B
55.
Equivalent
logical expression for the Well Formed Formula (WFF),
~("x) F[x]
is
(A) "x (~F[x])
(B) ~($x) F[x]
(C) $x (~F[x])
(D) "x F[x]
Answer: C
56.
An A*
algorithm is a heuristic search technique which
(A) is like a
depth-first search where most promising child is selected for expansion
(B) generates all
successor nodes and computes an estimate of distance (cost) from start node to
a goal node through each of the successors. It then chooses the successor with shortest
cost.
(C) saves all path
lengths (costs) from start node to all generated nodes and chooses shortest
path for further expansion.
(D) none of the above
Answer: B
57.
The
resolvent of the set of clauses
(A Ú B, ~A Ú D, C Ú ~B) is
(A) A Ú B (B)
C Ú D
(C) A Ú C (D)
A Ú D
Answer: B
58.
Match
the following :
a.
Script i.
Directed graph with labelled nodes for graphical representation
of knowledge
b.
Conceptual Dependencies ii.
Knowledge about objects and events is stored in record-like structures consisting
of slots and slot values.
c.
Frames iii.
Primitive concepts and rules to represent natural language
statements
d.
Associative Network iv.
Frame like structures used to represent stereotypical patterns for commonly occurring
events in terms of actors, roles, props and scenes
Codes
:
a b
c d
(A) iv ii i
iii
(B) iv iii ii
i
(C) ii iii iv
i
(D) i iii iv ii
Answer: B
59.
Match
the following components of an expert system :
a. I/O
interface i.
Accepts user’s queries and responds to question through
I/O interface
b. Explanation module ii. Contains facts and rules about the
domain
c.
Inference engine iii.
Gives the user, the ability to follow inferencing steps at any time during consultation
d.
Knowledge base iv.
Permits the user to communicate with the system in a natural way
Codes
:
a b c d
(A) i iii iv
ii
(B) iv iii i
ii
(C) i iii ii
iv
(D) iv i iii ii
Answer: B
60.
A
computer based information system is needed :
I. as it is difficult
for administrative staff to process data.
II. due to rapid growth
of information and communication technology.
III. due to growing size
of organizations which need to process large volume of data.
IV. as timely and
accurate decisions are to be taken.
Which of the above
statement(s) is/are true ?
(A) I and II
(B) III and IV
(C) II and III
(D) II and IV
Answer: B
0 Comments