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A Special type Gateway that can keep external users from accessing resources on the LAN users access the external info is called:
Repeater
Firewall
Encryption
Hub
None of these
What is the name given to the exchange of control signals which is necessary for establishing a connection between a modem and a computer at one end of a line and another modem and computer at the other end?
Handshaking
Modem options
Protocol
All of these
None of these
In SQL, which command is used to changes data in a data table?
UPDATE
INSERT
BROWSE
APPEND
None of these
In SQL, which of the following is not a data definition language command?
RENAME
REVOKE
GRANT
UPDATE
None of these
Which command(s) is (are) used to redefine a column of the table in SQL ?
ALTER TABLE
DEFINE TABLE
MODIFY TABLE
ALL of the these
None of these
In a relational schema, each tuple is divided into fields called
Relations
Domains
Queries
All of the these
None of these
An indexing operation
Sorts a file using a single key
Sorts file using two keys
Establishes an index for a file
Both (1) and (3)
None of these
Data security threats include
Hardware failure
Privacy invasion
Fraudulent manipulation of data
All of these
None of these
The language used in application programs to request data from the DBMS is referred to as the
DML
DDL
Query language
DCL
None of these
A ___ contains the smallest unit of meaningful data, so you might call it the basic building block for a data file.
File structures
Records
Fields
Database
None of these
A ___ means that one record in a particular record type is related to only one record of another record type.
One to one relationship
One to many relationship
Many toone relationship
Many to many relationship
None of these
Through linked list one can implement
Stack
Graph
Queue
All of these
None of these
A heap allows a very efficient implementation of a
Doubled ended queue
Priority queue
Stack
Trees
None of these
In files, there is a key associated with each record which is used to differentiate among different records. For every file there is at least one set of keys that is unique. Such a Key is called
Unique key
Prime attribute
Index key
Primary Key
Null key
____ is primarily used for mapping host names and email destinations to IP address but can also be used for other purposes.
TCP(transfer control protocol)
DNS(Domain Name System)
SHA (Secure Hash Algorithm)
Simple Network Management Protocol (SNMP)
None of these
Override is a method
For an operation that replaces an inherited method for the same operation
For a data that replaces an inherited method for the same operation
For an operation that takes arguments form library function
All of these
None of these
Local variables
Are created outside a block
Are known only to that block
Continue to exist when their block ends
Are illegal in C++
None of these
____ is virus that inserts itself into a system’s memory. Then it take number of actions
when an infected file is executed.
Web scripting virus
Polymorphic virus
Macro virus
Boot sector virus
Resident virus
This ___ data mining technique derives rules from real world case examples.
Waterfall model
RAD
White Box
Spiral model
Case based reasoning
The ___ remains operative until the software is required.
Waterfall model
Incremental model
Spiral model
Prototyping model
Incremental model
Data mining evolve as a mechanism to cater the limitations of ___ systems to deal massive data sets with high dimensionality, new data type, multiple heterogeneous data resource etc.
OLTP
OLAP
DSS
DWH
None of these
An important application of cryptography, used in computerized commercial and financial transaction
Data mining
Data warehousing
Digital signature
Media convergence
None of these
Rows of a relation are called:
Relation
Tuples
Data structure
An entity
None of these
The drawbacks of the binary tree sort are remedied by the
Linear sort
Quick Sort
Heap Sort
Insertion Sort
None of these
Which layer of OSI determines the interface of the system with the user?
Network
Application
Data link
Session
None of these
Question 26-50
The tracks on a disk which can be accused without repositioning the R/W heads is
Surface
Cylinder
Cluster
All of these
None of these
Which of the following is true about GUIs?
They make computers easier to use for nonprofessionals
They use icons and menus that users can select with a mouse
Both (1) and (2)
All of the these
None of these
A computer system consisting of its processor, memory and I/O devices accepts data, processes it and produces the output results .Can you tell in which component is the raw data fed?
Mass Memory
Main Memory
Logic Unit
Arithmetic unit
None of these
The mechanical diskette drive in which you insert your diskette is connected to the computer’s—bus
Data
Communication
Address
Parallel
None of these
A set of programs that handle firm’s database responsibilities is called a
Data base Management System (DBMS)
Data Base Processing System (DBPS)
Data Management System (DMS)
All of these
None of these
You are in the process of analyzing a problem that requires you to collect and store TCP/ IP Packets. Which of the following utilities is best suited for this purpose?
NBTSTAT
Performance Monitor
NETSTAT
Network Monitor
DHCP Management Console
A top to bottom relationship among the items in a database is established by a
Hierarchical Schema
Network Schema
Relational Schema
All of the above
None of these
The process of transferring data intended for a peripheral device into a disk (or intermediate store) so that it can be transferred to peripheral at a more convenient time or in bulk is known as
Multiprogramming
Spooling
Caching
Virtual programming
None of these
Which of the following system program forgoes the production of object code to generate absolute machine code and load it into the physical main storage location from which it will be executed immediately upon completion of the assembly?
Two pass assembler
Load and go assembler
Macro processor
Compiler
None of these
Relocation bits used by relocating loader are specifically (generated) by:
Relocating loader itself
Linker
Assembler or translator
Macro processor
None of these
From what location are the 1st computer instructions available on boot up ?
ROM BIOS
CPU
Boot.ini
CONFIG.SYS
None of these
Abstraction is
The act of representing the essential features of something without including much detail.
The act of representing the features of something much detail
A tree structure
All of these
None of these
Aggregation is a special for of
Generalization
Specialization
Association
Object
None of these
Consider an operation of addition. For two numbers, the operating will generate a sum. If the operand are strings, and the same operation would produce a third string by concatenation. This features is called ____.
Inheritance
Encapsulation
Polymorphism
Binding
None of these
In ER diagrams, the term cardinality is a synonym for the term—
Attribute
Degree
Entities
Cartesian
None of these
