InterviewUp – Job Interview Questions and Answers – Min sampling freq for 20-20kHz analog signal is

December 01, 2008

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Min sampling freq for 20-20kHz analog signal is

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Asked By: xtab

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40khz

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SAMSUNG

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Production Operator

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cisco, CCNA, DSP

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Network Administrator

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What is difference between baseband and broadband transmission?

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Asked By: Anonymous |

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In a baseband transmission, the entire bandwidth of the cable is consumed by a single signal. In broadband transmission, signals are sent on multiple frequencies, allowing multiple signals to be sent simultaneously.

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Baseband Signalling:

1)Uses digital signalling

2)No frequency-division multiplexing

3)Bi-directional transmission

4)Signal travels over short distances

Broadband Signalling:

1)Uses analog signalling

2)Unidirectional transmission

3)Frequency-division multiplexing is possible

4)Signal can travel over long distances before being attenuated

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Monday, April 28, 2008

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networking

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Network Administrator

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How are the wait/signal operations for monitor different from those for semaphores?

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Asked By: parktren |

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If a process in a monitor signal and no task is waiting on the condition variable, the signal is lost. So this allows easier program design. Whereas in semaphores, every operation affects the value of the semaphore, so the wait and signal operations should be perfectly balanced in the program.

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Tuesday, May 13, 2008

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Operating System

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Software Engineer

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What does the swapping system do if it identifies the illegal page for swapping?

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Asked By: silme |

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If the disk block descriptor does not contain any record of the faulted page, then this causes the attempted memory reference is invalid and the kernel sends a "Segmentation violation" signal to the offending process. This happens when the swapping system identifies any invalid memory reference.

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Tuesday, May 13, 2008

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Operating System

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Software Engineer

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What is MSC?

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Asked By: kiwitaryo |

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A Mobile Switching Center (MSC) is a unit within a cellular phone network that automatically coordinates and switches calls in a given cell. It monitors each caller's signal strength, and when a signal begins to fade, it hands off the call to another MSC that's better positioned to manage the call.

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Monday, May 12, 2008

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J2ME

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Electronic Communications Engineer

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What is Modulation?

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Asked By: kiwitaryo |

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Modulation is the method by which a high-frequency digital signal is grafted onto a lower-frequency analog wave, so that digital packets are able to ride piggyback on the analog airwave.

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Monday, May 12, 2008

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J2ME

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Electronic Communications Engineer

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