51
What is the minimum number of units of resource R required such that no deadlock will ever occur in an operating system containing 5 user processes each requiring 2 units of R?
Answer
B. 6
52
The page miss ratio in a paged memory is 0.72. The time required to access a page in primary and secondary memory are 10ns and 100ns, respectively. The average time required to access a page is:
Answer
C. 74.8
53
The value of a counting semaphore at a particular instance of time is 5. '#' P operations and 16 V operations were completed on this semaphore subsequently. If the final value of the semaphore is 8, then '#' will be
Answer
D. 13
54
Given the following disk queue:
95, 180, 34, 119, 11, 123, 62, 64
with read-write head initially at the track 50 and the tail track being at 199. If C-LOOK disk scheduling algorithm is followed, then the total number of head movement required is:
95, 180, 34, 119, 11, 123, 62, 64
with read-write head initially at the track 50 and the tail track being at 199. If C-LOOK disk scheduling algorithm is followed, then the total number of head movement required is:
Answer
A. 157
55
NTFS stands for
Answer
C. New Technology File System
56
Shift-reduce parsers are
Answer
B. bottom-up parsers
57
Consider the following grammar:
S→ABSc|Abc
BA→AB
Bb→bb
Ab→ab
Aa→aa
Which of the following sentences can be derived by the above grammar?
S→ABSc|Abc
BA→AB
Bb→bb
Ab→ab
Aa→aa
Which of the following sentences can be derived by the above grammar?
Answer
D. abc
58
Which of the following is an intermediate language?
Answer
A. UNCOL
59
If an input file named "Test" is given to Lex, then its output file will be
Answer
D. Test.yy.c
60
The Banker's algorithm is used
Answer
C. to prevent deadlock in operating system
61
In the Internet Protocol(IP) suit of protocols, which of the following best describes the purpose of the Address Resolution Protocol?
Answer
D. To determine the hardware address of a given IP address
62
Given the basic ER and relational models, which of the following is incorrect?
Answer
C. In a row of a relational table, an attribute can have more than one value
63
If a relation scheme is in BCNF, then it is also in
Answer
-Question Cancelled
64
Communication circuits that transmit data in both directions but not at the same time are operating in
Answer
B. half duplex mode
65
For which one of the following reasons does Internet Protocol(IP) use the time-to-live(TTL) field in the IP datagram header?
Answer
C. Prevent packets from looping indefinitely
66
The transport layer protocols used for real time multimedia, file transfer, DNS and email, respectively are
Answer
C. UDP, TCP, UDP and TCP
67
The normal form that is considered adequate for relational database design is
Answer
B. 3NF
68
Result of compilation of DDL statement is stored in a special file called as
Answer
D. data dictionary
69
The number of entities to which another entity can be associated via a relationship set is called
Answer
C. Mapping Cardinality
70
The network topology that supports bidirectional links between each possible node is
Answer
D. Mesh
71
Which of the following UML diagram has a static view
Answer
B. Use case
72
What is the goal of the requirements analysis and specifications phase of the software development life cycle?
Answer
A. Understanding the customer requirements and organize them in an informal document
73
Which diagram in UML shows a complete or a partial view of the structure of a modeled system at a specific time
Answer
D. Object diagram
74
SRS document is called a black box specification of a system because
Answer
C. SRS document should specify only the external behavior of the system
75
Which of the following is the structural model that demonstrate the other system in the environment of the system being developed
Answer
A. System context model
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