Saturday, August 20, 2011

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

1 komentar:

Anonymous said...

saya rasa ada beberapa yg salah gan...
jawaban yang benar :
3. Which type of cable run is most often associated with fiber-optic cable?
- backbone cable

4. What are three measures of data transfer? (Choose three.)
- goodput
- throughput
- bandwidth

6. Which of the following is a characteristic of single-mode fiber-optic cable?
- generally uses lasers as the light source

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