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lehuy0305
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Module3_S1

   Trong: CCNA
 
Oct 26 2007, 10:54 PM     Bởi: lehuy0305
1.
What are two advantages of using UTP cable in a networking environment? (Choose two.)
is stiffer than STP
is less expensive than fiber
is easier to install than coaxial
provides longer distances than coaxial provides
is less susceptible to outside noise sources than fiber is
2.
What are two advantages of using fiber-optic cabling instead of UTP? (Choose two.)
lower cost
easer to install
allows longer distances
less effected by external signals
easier to terminate the cable ends
3.
What is the difference between a wireless NIC and an Ethernet NIC?
The Ethernet NIC operates at 100 Mbps, whereas a wireless NIC operates at 10 Mbps.
The Ethernet NIC uses a PCI expansion slot, and a wireless NIC cannot use an expansion slot.
The wireless NIC uses CSMA/CA, whereas a Ethernet NIC uses token passing as an access method.
The wireless NIC associates to an access point, and an Ethernet NIC attaches to a hub or switch using a cable.
The Ethernet NIC attaches to a hub or a switch using only fiber cabling, and a wireless NIC attaches to a wireless antenna using air as a network medium.
4.
Which wireless standard operates in the 5 GHZ transmission range and is capable of 54 Mbps of data throughput?
802.11
802.11a
802.11b
802.11g
5.
A company is converting a cabled LAN to a wireless Ethernet LAN. What must be changed on every host on the network?
No changes are required.
Each host will require a new IP address.
Each host will require an appropriate NIC or adapter.
Each host will require that the operating system be upgraded.
6.


Refer to the exhibit. Which answer correctly identifies the pinout of the UTP cables labeled Cable A, Cable B, and Cable C?
A=straight, B=rollover, C=crossover
A=rollover, B=crossover, C=straight
A=crossover, B=straight, C=straight
A=crossover, B=straight, C=rollover
A=straight, B=crossover, C=rollover
A=rollover, B=straight, C=crossover
7.
What factors should be considered when selecting the appropriate cable for connecting a PC to a network? (Choose two.)
type of system bus
motherboard model
distance of cable run
speed of transmission
computer manufacturer
8.
Which Ethernet implementation requires the signal on the media to be boosted at a maximum distance of 100 meters?
10BASE2
10BASE5
100BASE-T
100BASE-FX
1000BASE-CX
9.
When is a straight-through cable used in a network?
when configuring a router
when connecting a host to a host
when connecting a switch to a router
when connecting one switch to another switch
10.
What type of cable is used to make an Ethernet connection between a host and a LAN switch?
console
rollover
crossover
straight-through
11.
Which of the following are used for data communication signals? (Choose three.)
light patterns
electrical voltages
controlled air pulses
mixed media impulses
magnetized fluid wave
modulated electromagnetic waves
12.
What does UTP cable rely on to reduce signal degradation caused by EMI and RFI?
shielding
magnetism
cancellation
insulation
properly grounded connections
RJ-45 connectors
13.
Select the characteristics specified by 10BaseT. (Choose three.)
twisted pair cable
T style connectors
baseband transmission
10 gigabits per second data rate
10 megabits per second data rate
decimal encoded data transmission
14.


Refer to the exhibit. What type of cable connects the two routers together without any intermediary device?
console
rollover
crossover
straight-through
15.
Which cable connectors are used to connect a cable from a router's console port to a PC? (Choose two.)
RJ-11
RJ-12
RJ-45
DB-8
DB-9
DB-10

 

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