ENetwork Chapter 8

1   
Which method of signal transmission uses radio waves to carry signals?

•     wireless

   
2   

Refer to the exhibit. Which type of Category 5 cable is used to make an Ethernet connection between Host A and Host B?

•     crossover cable

   
3   
Which type of cable run is most often associated with fiber-optic cable?

•     horizontal cable

   
4   
What are three measures of data transfer? (Choose three.)

•     frequency
•     throughput
•     bandwidth

5   
In most business LANs, which connector is used with twisted-pair networking cable?

•     RJ-45

   
6   
Which of the following is a characteristic of single-mode fiber-optic cable?

•     generally uses LEDs as the light source

   
7   
An installed fiber run can be checked for faults, integrity, and the performance of the media by using what device?

•     OTDR

8   
Which OSI layer is responsible for binary transmission, cable specification, and physical aspects of network communication?

•     Physical

9   
Which fiber connector supports full duplex Ethernet?

Jawaban no.9

    








10   
What is a possible effect of improperly applying a connector to a network cable?

•     Data transmitted through that cable may experience signal loss.

   
11   
What characteristic of UTP cable helps reduce the effects of interference?

•     the twisting of the wires in the cable

   
12   
What is considered a benefit of wireless as a media choice?

•    more host mobility

   
13   
With the use of unshielded twisted-pair copper wire in a network, what causes crosstalk within the cable pairs?

•    the magnetic field around the adjacent pairs of wire

   
14   
What is a primary role of the Physical layer in transmitting data on the network?

•     create the signals that represent the bits in each frame on to the media

   
15   
Which characteristics describe fiber optic cable? (Choose two.)

•     It is not affected by EMI or RFI.
•     It is the most expensive type of LAN cabling.

   
16   
When is a straight-through cable used in a network?

•     when connecting a host to a switch

   
17   
In LAN installations where potential electrical hazards or electromagnetic interference may be present, what type of media is recommended for backbone cabling?

•     fiber

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