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 Take Assessment - Module 4 Exam - CCNA 1 Networking Basics (Version 3.1) 

   
   
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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 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  
 

 

3 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 
 

 

4 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 
 

 

5 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 "
 

 

6 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 
 

 

7 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 "
 

 

8 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 
 

 

9 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 "
 

 

10 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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