ابي حل لهذه الأسئلة 16/11/2005

السلام عليكم ورحمة الله وبركاتته

إخواني هذه الأسئلة لم أجد لها حل في الاسئلة المحلوله التي تم طرحها بالمنتدى ياليت حد يحلها لي لاني دورت ومالقيت باقي لي بس كم سؤال والباقي حليتها وشاكر لكم


What is expected when crosstalk is present in networks with higher transmission frequencies? (Choose two.)


jitter


increase in crosstalk


higher signal attenuation


increases in cancellation effect


destruction of more of the data signal


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A company needs to extend the LAN to six separate buildings. To limit the amount of signal attenuation on the LAN media, what type of media would be the best to use between the buildings?


air (wireless)


coaxial cable


fiber


shielded twisted pair


unshielded twisted pair


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What is a cause of crosstalk in UTP cable?


cable pairs that are shorted


cable pairs crossed during termination


cabling runs installed in separate conduit


cable pairs that are untwisted because of poor termination of the cable


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A small company is experiencing difficulties on its LAN. After performing some tests, a technician has determined that the copper media supporting the LAN is experiencing abnormal attenuation. What are two possible causes of the problem? (Choose two.)


defective connectors


excessively long cable lengths


use of higher grade cabling


low frequency signals used in the media


network cable runs isolated from other cables


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Which of the following describes frequency?


length of each wave


height of each wave


number of cycles each second


amount of time between each wave

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I am sorry, I am not sure about all questions, so I will answer the answers that am sure of them only:
Q7: Fiber
Q9: Defective connectors, and long cables.
Q10: Frequency is cycles per second

I hope that you'll make use of these answers.

I have CCNA, and I would like to have the CCNP and start studying BSCI, do you have some cisco press book or simulation for that?

Salamoo Alikom BrotherAlfadhli,

Here is the answers for you questions. I'm working in the network operations field for the last 7 years. I'm also a Cisco teacher in a local community college here in USA.I passed my CCNP/CCDP and some other certifications. Let me know if I can do anything else for your. when my time allows.

Q1-Answer:
increase in crosstalk
destruction of more of the data signal

Q2-Answer:
Fiber

Q3-Answer:
cable pairs that are untwisted because of poor termination of the cable

Q4-Answer:
excessively long cable lengths
low frequency signals used in the media

Q5-Answer:
number of cycles each second

Salamoo Alikom,

AbuAbdullah