NCO- Cyber Olympiad (SOF) Class 7: Questions 383 - 385 of 417

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Question number: 383

» Computers » Memory & Storage Devices

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MCQ▾

Question

Which of the following storage media provides sequential access to data?

Choices

Choice (4) Response

a.

Magnetic tap

b.

Optical disk

c.

Magnetic disk

d.

Floppy disk

Question number: 384

» Computers » Memory & Storage Devices

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Appeared in Year: 2011

MCQ▾

Question

All of the following are examples of electronic databases except which one?

Choices

Choice (4) Response

a.

A CD-ROM encyclopedia

b.

Online catalog

c.

Computerised student information

d.

A collection of country music CDs

Question number: 385

» Mental Ability » Basic Statistics

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MCQ▾

Question

The graph shows the petrol efficiency of several cars.

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Created with Highcharts 4.2. 5CarsNumber of Km per LiterEfficiencyCars vs. Number of km per liter123450102030402Cars vs. Number of km per liter: 15

Choices

Choice (4) Response

a.

Car 1 can travel only half the distance of car 4 on the same amount of petrol

b.

The median value for efficiency of all the cars is 30 km per liter

c.

All the cars meet the federal guidance for fuel efficiency of at least 21 km per liter

d.

The difference in mileage between the most efficient car and the least efficient car is more than 15 km per liter