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16. Which of the following commands or sequences of commands will rename
a file x to file y in a Unix system?
I. my y, x II. my x, y III. cp y, x (rm x) IV. cp x, y (rm x)
(A) II and III
(B) II and IV
(C) land III
(D) II only
17. In a software project, COCOMO (Constructive Cost Model) is used to estimate
(A) effort and duration based on the size of the software
(B) size and duration based on the effort of the software
(C) effort and cost based on the duration of the software
(D) size, effort and duration based on the cost of the software
18. The diagram that helps in understanding and representing user requirements
for a software project using UML (Unified Modeling Language) is:
(A) Entity Relationship Diagram
(B) Deployment Diagram
(C) Data Flow Diagram
(D) Use Case Diagram
19. A software organization has been assessed at SEI CMM Level 4.
Which of the following does the organization need to practice beside Process
Change Management and Technology Change Management in order to achieve Level 5?
(A) Defect Detection
(B) Defect Prevention
(C) Defect Isolation
(D) Defect Propagation
20. A software configuration management tool helps in
(A) keeping track of the schedule based on the milestones reached
(B) maintaining different versions of the configurable items
(C) managing manpower distribution by changing the project structure
(D) all of the above
21. Which level of locking provides the highest degree of concurrency
in a relational data base?
(A) Page
(B) Table
(C) Row
(D) Page, table and row level locking allow the same degree of concurrency
22. Which one of the following statements is FALSE?
(A) Packet switching leads to better utilization of bandwidth
resources than circuit switching.
(B) Packet switching results in less variation in delay than
circuit switching.
(C) Packet switching requires more per packet processing than
circuit switching.
(D) Packet switching can lead to reordering unlike in
circuit switching.
23. Which one of the following statements is FALSE?
(A) TCP guarantees a minimum communication rate
(B) TCP ensures in-order delivery
(C) TCP reacts to congestion by reducing sender window size
(D) TCP employs retransmission to compensate for packet loss
24. Which one of the following statements is FALSE?
(A) HTTP runs over TCP
(B) HTTP describes the structure of web pages
(C) HTTP allows information to be stored in a URL
(D) HTTP can be used to test the validity of a hypertext link
25. A sender is employing public key cryptography to send a secret
message to a receiver. Which one of the following statements is TRUE?
(A) Sender encrypts using receiver�s public key
(B) Sender encrypts using his own public key
(C) Receiver decrypts using sender�s public key
(D) Receiver decrypts using his own public key
26. A subnet has been assigned a subnet mask of 255.255.255.192.
What is the maximum number of hosts that can belong to this subnet?
(A) 14
(B) 30
(C) 62
(D)126
27. A host is connected to a Department network which is part of a University
network. The University network, in turn, is part of the Internet. The largest
network in which the Ethernet address of the host is unique is:
(A) the subnet to which the host belongs
(B) the Department network
(C) the University network
(D) the Internet
28. In TCP, a unique sequence number is assigned to each
(A) byte
(B) word
(C) segment
(D)message
29. Which of the following objects can be used in expressions and scriplets in JSP
(Java Server Pages) without explicitly declaring them?
(A) session and request only
(B) request and response only
(C) response and session only
(D) session, request and response
30. Consider the following statements:
I. telnet, ftp and http are application layer protocols.
II. EJB (Enterprise Java Beans) components can be deployed
in a J2EE (Java2 Enterprise Edition) application server.
III. If two languages conform to the Common Language Specification (CLS)
of the Microsoft.NET framework,, then a class defined in any one of them
may be inherited in the other.
Which statements are true?
(A) land II only
(B) II and III only
(C) land III only
(D)I, II and III
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