068 - Data Transfer Rates

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068 - Data Transfer Rates

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Question:

1. What is the theoretical maximum data transfer rate that a wireless G router can provide?

	A	11 Mbit/s (1 MBps)
	B	24 Mbit/s (3 MBps)
	C	54 Mbit/s (6 MBps)
	D	100 Mbit/s (12 MBps)

Feedback:

Wireless G routers use 802.11g which specifies a maximum data transfer rate of 54 Mbit/s. Speeds above it can be provided only by a wireless N router.

Correct Answer:	C
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Question:

2. Which among the following is atleast 5 times faster than the other in terms of data transfer?

	A	Bluetooth 2.0
	B	56k dialup modem
	C	Both are almost same

Feedback:

A bluetooth 2.0 device can give a practical speed of around 2 Mbit/s whereas a 56k modem can give only about 40-43 kbit/s. i.e. bluetooth transfer rate is roughly 50 times faster than dialup modem!

Correct Answer:	A
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Question:

3. In Jan 2011, Indian Goverment revised the definition of a broadband internet connection from a minimum speed of ___ to ___.

	A	128 kbit/s to 256 kbit/s
	B	256 kbit/s to 512 kbit/s
	C	512 kbit/s to 1 Mbit/s
	D	1 Mbit/s to 2 Mbit/s

Feedback:

The recommendation to revise the definition was provided by TRAI. The Government has also said that from January 1, 2015, the stipulated download speed for any broadband connection, either wireline or wireless, will be 2 Mbit/s.

Correct Answer:	B
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Question:

4. What is the ratio of amount of data read per sec by a VCD player, DVD player and Blu-ray player?

	A	1:5:25
	B	1:2:4
	C	1:10:54
	D	1:25:50

Feedback:

The data transfer rates when watching movie on
VCD is 1.15 Mbit/s
DVD is 10.08 Mbit/s
Blu-ray disc is 54 Mbit/s
This means in one sec if 1 unit of data is read from a CD, then 10 units will be read from a DVD and 54 units from a Blu-ray disc.

Correct Answer:	C
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Question:

5. USB 2.0 specifies a maximum transfer rate of 480 Mbit/s (60 MBps). What speed does USB 3.0 specify?

	A	600 Mbit/s (75 MBps)
	B	960 Mbit/s (120 MBps)
	C	1 Gbit/s (125 MBps)
	D	5 Gbit/s (625 MBps)

Feedback:

USB 3.0 specifies speeds upto 10 times that of USB 2.0. If USB 2.0 can be called Hi-Speed, then USB 3.0 shall be called SuperSpeed.

Correct Answer:	D
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Quiz Info

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Author:	Mohan Sundararaju
Date:	Oct-13-2011
Level:	Easy-Medium

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