Database Administration Questions


Q:

Magnetic disks are the most popular medium for

A) Sequential access B) Direct access
C) Both A & B D) None of the above
 
Answer & Explanation Answer: C) Both A & B

Explanation:

A magnetic disk is a storage device that uses a magnetization process to write, rewrite and access data. It is covered with a magnetic coating and stores data in the form of tracks, spots, and sectors. Hard disks, zip disks, and floppy disks are common examples of magnetic disks.

Magnetic_disks_are_the_most_popular_medium_for11558071061.png image        Magnetic_disks_are_the_most_popular_medium_for1558071122.png image

 

 

Hence, Magnetic disks are the most popular medium for both Direct access and Sequential access.

 

 

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Q:

A man covers half of his journey by train at 60 km/hr, half of the remaining by bus at 30 km/hr and the rest by cycle at 10 km/hr. Find his average speed during the entire journey?

A) 32 kmph B) 20 kmph
C) 18 kmph D) 24 kmph
 
Answer & Explanation Answer: D) 24 kmph

Explanation:

Let the total distance of the journey of a man = d kms

Now, the average speed of the entire journey = dd120 + d120 + d40  = 24 kmph.

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30 15078
Q:

The Ozone Layer restricts from

A) Infrared Rays B) Radio waves
C) Ultraviolet Radiation D) X-Rays and Gamma Rays
 
Answer & Explanation Answer: C) Ultraviolet Radiation

Explanation:

The Ozone layer which is present in the Earth's atmosphere protects it by restricting from UV or Ultraviolet radiation, the dangerous rays contained by Sun.

the_ozone_layer_restricts_us_from1542267550.jpg image

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51 14847
Q:

A world wide web contains web pages

A) residing in many computers linked together using HTML. B) with links to other web pages.
C) residing in many computers. D) created using HTML.
 
Answer & Explanation Answer: A) residing in many computers linked together using HTML.

Explanation:

A_world_wide_web_contains_web_pages1551768792.jpg image

A world wide web contains web pages residing in many computers linked together using HTML.

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27 14794
Q:

Yard is to Inch as Quart is to

A) Milk B) Gallon
C) Liquid D) Ounce
 
Answer & Explanation Answer: D) Ounce

Explanation:

Yard is to Inch as Quart is to Ounce.

Because Yard and Inch are units of measurement Where Yard is larger than Inch i.e, 1 Yard = 36 Inches.

So, here Quart and Ounce are also units of measurement where Quart is larger than Ounce i.e, 1 Quart = 32 Ounces.

Gallon is not correct because Gallon is larger than Quart and Milk and Liquid are not units of measurement.

So, Ounce is correct.

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Filed Under: Analogy
Exam Prep: AIEEE , Bank Exams , CAT , GATE , GRE , TOEFL
Job Role: Analyst , Bank Clerk , Bank PO , Database Administration , IT Trainer

19 14739
Q:

Find the next number in the given number series?

50, 51, 47, 56, 40, ?

A) 58 B) 65
C) 76 D) 81
 
Answer & Explanation Answer: B) 65

Explanation:

The given number series is 50, 51, 47, 56, 40, ?

 

5050 + 12 = 5151 - 22 = 4747 + 32 = 5656 - 42 = 4040 + 52 = 65

 

Hence, the next number in the given number series is 65.

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3 14680
Q:

Fresh grapes contain 60% water, while dry grapes contain 40% water. How many kgs of dry grapes can be obtained by 60 kg of fresh grapes?

A) 25 kgs B) 30 kgs
C) 35 kgs D) 40 kgs
 
Answer & Explanation Answer: D) 40 kgs

Explanation:

The fruit content in both the fresh fruit and dry fruit is the same.

Let 'p' kgs of dry grapes are obtained from the 60 kgs of fresh grapes

 

=> 60 x 40100 = p x 60100=> p = 40 kgs.

 

Therefore, 40 kgs of Dry grapes are obtained from 60 kgs of Fresh grapes.

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Filed Under: Percentage
Exam Prep: GRE , GATE , CAT , Bank Exams , AIEEE
Job Role: IT Trainer , Database Administration , Bank PO , Bank Clerk , Analyst

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Q:

I can Honk without using a Horn.

Who am I?

A) Goose B) Crane
C) Penguin D) Humming
 
Answer & Explanation Answer: A) Goose

Explanation:

Goose can Honk without using a Horn. Geese are waterfowl of the family Anatidae.

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