IBPS RRB SO IT Professional Knowledge Quiz: 11th September

(a)java.lang.Class

(b)java.util.Name

(c)java.lang.Object

(d)java.awt.Window

(e)java.dfd.window

 

Sol. java.lang.Object class is the super base class of all Java classes.  Every other Java classes descend from Object.

 

 

(a) Data diddling

(b) Data contaminating

(c) Data capturing

(d) Data trashing

(e) Data spoofing

S2.Ans.(a) 
Sol. Data diddling is a method adopted by computer criminals. Data diddling is the changing of data before or during entry into a computer system or altering the raw data just before it processed by a computer and then changing it back after the processing is complete. Using this technique, the criminals can manipulate the output and it is not so easy to identify.

(a) Application Layer

(b) Session Layer

(c) Transport Layer

(d) Presentation Layer

(e) Physical Layer

 

Sol. The primary goal of the presentation layer is to take care of the syntax and semantics of the information exchanged between two communicating systems. The presentation layer takes care that the data is sent in such a way that the receiver will understand the information (data) and will be able to use the data. Presentation layer also called the syntax layer

(a) Authentication, Availability, Accessibility

(b) Confidentiality, Integrity, Availability,

(c) Integrity, Authentication, Confidentiality

(d) Availability, Security, Encryption

(e) Login, Availability, Encryption

 

Sol. A principle that is a core requirement of information security for the safe utilization, flow, and storage of information is the CIA triad. CIA stands for confidentiality, integrity, and availability and these are the three main objectives of information security.

 

(a) WHERE – ORDER BY – HAVING – GROUP BY

(b) WHERE – HAVING – GROUP BY – ORDER BY

(c) WHERE – GROUP BY – HAVING – ORDER BY

(d) ORDER BY – HAVING – GROUP BY – WHERE

(e) can be arranged in any order

 

Sol. Syntax of SQL SELECT Statement:

SELECT column_list FROM table-name

[WHERE Clause]

[GROUP BY clause]

[HAVING clause]

[ORDER BY clause];

(a) HAVING clause is used for rows rather than columns.

(b) HAVING clause is used for columns rather than groups.

(c) HAVING clause acts exactly like a WHERE clause.

(d) HAVING clause is used to mention condition in Group based SQL functions

(e) All are true about HAVING Clause

 

Sol. Having clause is used to filter data based on the group functions. This is similar to WHERE condition but is used with group functions. Group functions cannot be used in WHERE Clause but can be used in HAVING clause.

 

(a) 255.255.0.0

(b) 255.255.255.0

(c) 255.255.255.255

(d) 255.0.0.0

(e) None of these

S7.Ans.(d) 
Sol. In an IP network, every machine on the same physical network sees all the data packets sent out on the network. As the number of computers on a network grows, network traffic will grow many fold, bringing down performance drastically. In such a situation, you would divide your network into different subnetworks and minimize the traffic across the different subnetworks. Interconnectivity between the different subnets would be provided by routers, which will only transmit data meant for another subnet across itself. To divide a given network address into two or more subnets, you use subnet masks. The default subnet masks for class A networks is 255.0.0.0, for class B is 255.255.0.0, and for class C is 255.255.255.0.

(a)SSL

(b)EGP

(c)UDP

(d)HTTP

(e)IGP

S8.Ans.(a) 
Sol. Secure Sockets Layer (SSL) is a standard protocol used for the secure transmission of documents over a network. Developed by Netscape, SSL technology creates a secure link between a Web server and browser to ensure private and integral data transmission. SSL uses Transport Control Protocol (TCP) for communication.

(a)  Open Shortest Path First (OSPF) Protocol

(b) Routing Information Protocol (RIP)

(c) Border Gateway Protocol

(d) Both (A) and (B)

(e) TCP

S9.Ans.(c) 
Sol. Exterior Gateway Protocol (EGP) is a protocol for exchanging routing information between two neighbor gateway hosts (each with its own router) in a network of autonomous systems. EGP is commonly used between hosts on the Internet to exchange routing table information.

(a)Synchronous

(b)Asynchronous

(c)Sequential

(d)Directional

(e)Bidirectional

 

Sol. The synchronous transfer can be implemented with a method called handshaking. This method is used to accompany each data item being transferred with a control signal that indicates the presence of data in the bus, the unit receiving the data item respond with another control signal to acknowledge receipt of the data.

(a) Entity integrity

(b) Referential integrity

(c) Domain integrity

(d) Both 1 and 2

(e) None of these

 

Sol. Entity integrity rule defines no component of a primary key is allowed to be NULL value.

 

(a) Finding the cost of the project

(b) Design software

(c) Scheduling software

(d) Time complexity of the project

(e) None of the above

S12.Ans.(a) 
Sol. COCOMO (Constructive Cost Model) is a method for evaluating and/or estimating the cost of software development.

(a) Asymmetric key

(b) Symmetric key

(c) Secret key

(d) Private key

(e) Logic key

 

Sol. the most common asymmetric cipher currently in use is RSA, which is fully supported by the .NET security framework. Asymmetric means that there are two different keys. This is also called public-key cryptography because one of them can be given to everyone. the other key must be kept private.

(a) Integer

(b) Pointer

(c) Constant

(d) Memory Variable

(e) None of these

 

Sol. A pointer is a variable that contains the address in memory of another variable.

 

(a) Coupling objects together more tightly

(b) Enabling a number of different operations to share the same name

(c) Making objects more dependent on one another

(d) Removing the barriers imposed by encapsulation.

(e) None of these

 

Sol.  Polymorphism reduces the effort required to extend an object system by enabling a number of different operations to share the same name.

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