RAID
Redundant Arrays of Independent Disks
Redundant Arrays of Independent Drives
Redundant Arrays of Interconnected Drives
Redundant Arrays of Interconnected Disks
Correct Answer :
A. Redundant Arrays of Independent Disks
Related Questions
Datalog is
procedural query language
nonprocedural query language
scan(), write()
none of the above
The host part in a class A type of an IP address has
12 bits
16 bits
24 bits
28 bits
Database locking concept is used to solve the problem of
Lost Update
Uncommitted Dependency
Inconsistent Data
All of the above
FDDI protocol operates in
i) Transport layer
ii) Network layer
iii) Datalink layer
iv) Physical layer
i and ii only
ii and iii only
i and iii only
iii and iv only
Noiseless channel has ……… types of protocols.
2
3
4
5
Consider the join of a relation R with relation S. If R has m tuples and S has n tuples,
then the maximum size of join is:
mn
m+n
m+n)/2
2 m+n)
In the architecture of a database system external level is the
physical level.
logical level.
conceptual level
view level.
Radio frequencies below ............. are more suitable for omnidirectional applications.
300MHz
1GHz
5GHz
10 GHz
Only one communication channel is needed rather than n channels to transmit data between two communicating devices
parallel
serial
analog
digital
Which of the following is not an Aggregate function?
Min
Max
Select
Avg
Three SQL, DDL, CREATE commands are
Schema, Base and Table
Schema, Table and View
Base, Table and Schema
Key, Base and Table
.................. means sending a digital signal over a channel without changing the digital signal to an analog signal.
Baseband transmission
Broadband transmission
Digital transmission
Analog transmission
Which of the following is the unit of signaling speed or modulation rate or the rate of symbol transmission?
Data rate
Bit rate
Signal to Noise Ratio
Baud rate
The ________ states that a foreign key must either match a primary key value in another relation or it must be null.
entity integrity rule
referential integrity constraint
composite attribute
action assertion
When all attributes in a relation tuple are not functionally dependent only on the key attribute. Which of the following normalization is needed?
first
second
third
fourth
Thermal noise is often referred to as ............... noise, because it affects uniformly the different frequencies.
Gray
White
Blue
Black
DECLARE is a(an)
executable statement.
declarative statement.
Ordered file
none of the above
What does the number of attributes in a relation is called?
Cardinality
Degree
Tuple
Order
The left outer join takes all tuples
in the left relation which didnt match with any tuple in right relation
in the left relation which matched with a tuple in right relation
in the right relation which didnt match with any tuple in left relation
in the right relation which matched with a tuple in left relation
Which of the following statements is not true about two tier client server database architecture?
SQL statements are processed on tier server
SQL statements may be processed on some of the clients
Business logic is mostly processed on clients
Business logic may be processed on the server
An operation that will increase the length of a list is
insert
modify
lookup
none of the above
The raw facts and figures are:
Data
Data field
DBMS
DBASE
What is the max data capacity of STP?
1 Gbps
56 Mbps
100 Mbps
256 Mbps
Extended Entity Relationship model consists of which of the following
i) Specialization
ii) Generalization
iii) Categorization
i and ii only
ii and iii only
i and iii only
All i, ii iii
Which of the following normalization is needed, if an attribute of a composite key is dependent on an attribute of the other composite key?
BCNF
Second
Third
Fourth
Expand the acronym OLAP
Object Linked Access Program
Organizational Architecture Processing
Online Analytical Processing
none of these
Relational Algebra is
Data Definition Language.
Data Manipulation Language
Procedural query Language
None of the above
A …………… is a memory area where data are processed.
view
trigger
cursor
none of the above
Select the incorrect statement
BCNF is stronger than 3NF
Relational algebra is a non-procedural language
Every conflict serializable schedule is view serializable.
none of the above
Electromagnetic spectrum included in radiowaves are
i) Super High Frequency (SHF)
ii) Very High Frequency (VHF)
iii) Ultra High Frequency (UHF)
iv) High Frequencies (HF)
i, ii and iii only
i, ii and iv only
ii, iii and iv only
i, iii and iv only