sql data storage and query processing one mark dumps

8/12/2019 SQL DATA STORAGE AND QUERY PROCESSING one mark dumps

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DBMS SKILL TEST UNIT III

UNIT III

DATA STORAGE AND QUERY PROCESSING

1) EEPROM is an

a) Electrically Erasable Programmable read only Memory

b) Electronically Erasable Programmable read only Memory

c) Electrically Erased Programmable read only Memory

d) Electronically Erasable Programmable read only Memory

Ans: (a)

2) The Primary medium for the long term online storage of data is the

a) !lash Memory

b) O"tical #torage

c) Magnetic $is%

d) Ta"e #torage Ans: (c)

&) The $igital 'ideo dis% is renamed as

a) $ynamic ideo $is%

b) $igital ersatile $is%

c) $ynamic ersatile $is%

d) $igital ideo $is% Ans: (b)

) and are "rimary storage media*

a) O"tical $is% and Main Memory

b) Magnetic dis% and O"tical $is%

c) Magnetic dis% and Magnetic Ta"e

d) +ache and Main Memory Ans: (d)

,) and are referred to as tertiary storage or off line storage

a) Magnetic Ta"e and O"tical $is% -u%ebo.es

b) O"tical $is% and Main Memory

c) Magnetic dis% and O"tical $is%

d) Magnetic dis% and Magnetic Ta"e Ans: (a)

Karpagam Technical Academy - DBMS

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/) stores the information magnetically as re'ersals of magneti0ation of the

magnetic material*

a) Read rite 3ead

b)Trac%

c)#ector

d)Platter Ans:(a)

4) RA5$ means

a) Re"eated Arrays of 5nde"endent $is%s

b) Recursi'e Arrays of 5nde"endent $is%s

c) Random Arrays of 5nde"endent $is%s

d) Redundant Arrays of 5nde"endent $is%s Ans: (d)

6) 5n architecture the large number of dis%s are connected by high s"eed

net7or% to a number of ser'er com"uters

a) #A8

b) 9A8

c) A8

d) 8A8 Ans: (a)

) is the time ta%en from a read or 7rite re;uest is issued to 7hen data

transfer begins

a) A'erage #ee% Time

b) A'erage Time

c) #ee% Time

d) Access Time Ans: (d)

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11) is the amount of time that on a'erage=7e can e."ect the system to run

continuously 7ithout any failure*

a) A'erage #ee% Time

b) #ee% Time

c) Rotational 9atency Time

d) MTT! Ans: (d)

12) !ile #ystems that su""ort log dis%s are called*

a) +ontrol file system

b) Redo 9og file

c) -ournaling file systems

d) Achie'ing log files Ans:(c)

1&) The data stri"ing consists of s"litting the bits of each byte across multi"le dis%s *

This is called as

a) bitle'el stri"ing

b) stri"ing data

c) bloc% le'el stri"ing

d) unit le'el stri"ing Ans:(a)

1) refers to dis% arrays 7ith stri"ing at the le'el of bloc%s= but 7ithout

any redundancy

a) RA5$ 9e'el 1

b) RA5$ 9e'el

sql data storage and query processing one mark dumps

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