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>>>>>please send me ccna 3.1 chapters questions and >>>answers >>1 What conditions are described when transmission >>signals from one wire pair affects another wire pair? >>(Choose two.) >> >> noise >> resistance mismatch >> jitter >> crosstalk >> attenuation >> >> >> >> >>2 What factors need to be considered to limit the >>amount of signal attenuation in Ethernet cable runs? >>(Choose two.) >> >> type of users >> number of users >> length of cable >> type of electrical equipment >> installation of connectors on the cable >> >> >> >> >>3 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 >> >> >> >> >>4 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 >> >> >> >> >> >> >> >> >> >> >>5 Which of the following are detected by the wire map >>test? (Choose three.) >> >> near-end crosstalk (NEXT) >> opens >> propagation delay >> return loss >> reversed-pair faults >> short circuits >> >> >> >> >>6 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 >> >> >> >> >>7 How are binary ones and zeros represented in fiber >>optic installations? (Choose two.) >> >> +5 volts/-5 volts >> 0 volts/5 volts >> light/no light >> high to low electrical transition >> low to high electrical transition >> increasing/decreasing light intensity >> >> >> >> >>8 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 >> >> >> >> >>9 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 >> >> >> >> >>10 To ensure reliable LAN communications, what should >>a technician be looking for when attaching connectors >>to the ends of UTP cable? >> >> that the white-orange/orange pair is attached first >> that the wire pairs remain twisted as much as >>possible >> that one end of the shield is properly ground but not >>the other >> that 50 ohm termination resistors are on both ends

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