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ECE - Practice Test - 3

Q1:

Consider a noiseless channel with a bandwidth of 3000 Hz transmitting a signal with two signal levels. The maximum bit rate can be calculated as

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JIS_ECE
Section:
Advanced Communication Topics
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Q2:

Consider an extremely noisy channel in which the value of the signal-to-noise ratio is almost zero. In other words, the noise is so strong that the signal is faint. For this channel the capacity C is calculated as

Tags:
JIS_ECE
Section:
Advanced Communication Topics
Options:
Q3:

A class A address can also be described in slash notation as ___________.

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q4:

A class C address can also be described in slash notation as __________.

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q5:

In a mesh topology, if no of computers are 20, total connection is _______.

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q6:

A network with bandwidth of 10 Mbps can pass only an average of 12,000 frames per minute with each frame carrying an average of 10,000 bits. What is the throughput of this network?

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q7:

What is the propagation time if the distance between the two points is 12,000 km? Assume the propagation speed to be 2.4 × 108 mls in cable.

Tags:
JIS_ECE
Section:
Advanced Communication Topics
Options:
Q8:

An analog signal carries 4 bits per signal element. If 1000 signal elements are sent per second, find the bit rate

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q9:

A three-stage 200 × 200 switch has (N = 200) with k = 4 and n = 20. Calculate number of cross points:

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q10:

A single stage switch has 200 × 200 switch. Calculate number of cross points:

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JIS_ECE
Section:
Advanced Communication Topics
Options:
Q11:

The early FM push-to-talk telephone systems were used in

Tags:
JIS_ECE
Section:
ECE Miscellaneous
Options:
Q12:

DECT stands for

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q13:

World’s first cellular system was developed by

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q14:

MIN stands for

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q15:

The process of transferring a mobile station from one base station to another is

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q16:

PCN is

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q17:

IMT-2000 is a digital mobile system that functions as

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q18:

The 2G cellular network uses

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q19:

NADC is a 2G standard for

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q20:

The 2G GSM technology uses a carrier separation of

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q21:

Commonly used mode for 3G networks is

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q22:

The minimum spectrum allocation required for W-CDMA is

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q23:

CDMA2000 1xEV provides high speed data access with channel allocation of

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q24:

In TD-SDMA, there is a frame of _____milliseconds and the frame is divided into _____ time slots.

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JIS_ECE
Section:
ECE Miscellaneous
Options:
Q25:

The interference between the neighboring base stations is avoided by

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JIS_ECE
Section:
ECE Miscellaneous
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