GATE-IT-2004

Question 21

Which one of the following statements is FALSE?

• TCP guarantees a minimum communication rate
• TCP ensures in-order delivery
• TCP reacts to congestion by reducing sender window size
• TCP employs retransmission to compensate for packet loss

Question 22

Which one of the following statements is FALSE?

• HTTP runs over TCP
• HTTP describes the structure of web pages
• HTTP allows information to be stored in a URL
• HTTP can be used to test the validity of a hypertext link

Question 23

A sender is employing public key cryptography to send a secret message to a receiver. Which one of the following statements is TRUE?

• Sender encrypts using receiver’s public key
• Sender encrypts using his own public key
• Receiver decrypts using sender’s public key
• Receiver decrypts using his own public key

Question 24

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?

• 14
• 30
• 62
• 126

Question 25

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:  

• the subnet to which the host belongs
• the Department network
• the University network
• the Internet

Question 26

In TCP, a unique sequence number is assigned to each

• byte
• word
• segment
• message

Question 27

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?

• l and II only

• II and III only

• l and III only

• I, II and III

Question 28

Which of the following objects can be used in expressions and scriplets in JSP (Java Server Pages) without explicitly declaring them?    

• session and request only

• request and response only

• response and session only

• session, request and response

Question 29

Which of the above arguments are valid?

• P and Q only
• P and R only
• P and S only
• P, Q, R and S

Question 30

Let A be an Let A be an n × n matrix of the following form. What is the value of the determinant of A?

• A
• B
• C
• D