CH 4 Flashcards
1
Q
Which of the following types of fiberoptic connectors provides high density and requires only one connector for two cables? a. SC b. ST c. MT-RJ d. RJ-45
A
C
2
Q
Which of the following conditions requires cables not to exceed a recommended maximum length? a. Diminution b. Capacitance c. Bandwidth d. Attenuation
A
D
3
Q
Which of the following is the process for representing bit signals on the medium? a. Encryption b. Encoding c. Decryption d. Decoding
A
B
4
Q
What happens to signals as they travel the length of the medium? a. They decode. b. They amplify. c. They attenuate. d. They implode.
A
C
5
Q
Which of the following is UTP susceptible to? (Choose all that apply.) a. EMI b. Crosstalk c. Signal enhancement d. LEDs
A
A, B
6
Q
The space between a false ceiling and the true ceiling where heating and cooling air circulates is called the \_\_\_\_\_\_\_\_\_\_\_\_\_\_. a. duct-equivalent airspace b. conduit c. return air d. plenum
A
D
7
Q
What type of connector is used most commonly with TP network wiring? a. RJ-11 b. RJ-45 c. BNC d. MT-RJ
A
B
8
Q
You have been hired to install a network at a large government agency that wants to reduce the likelihood of electronic eavesdropping on its network. What type of cable is most resistant to eavesdropping? a. UTP b. STP c. Coaxial d. Fiber optic
A
D
9
Q
When two cables run side by side, signals traveling down one wire might interfere with signals traveling on the other wire. What is this phenomenon called? a. RFI b. Attenuation c. Impedance d. Crosstalk
A
D
10
Q
What characteristic of twisted-pair cabling helps mitigate the effects of crosstalk? a. Differential signals b. Copper conductors c. Four pairs of wires d. 100-ohm impedance
A
A
11
Q
Which of the following is a tool needed to make a patch cable? (Choose all that apply.) a. 110 punchdown tool b. Cable stripper c. Crimping tool d. RJ-45 jack
A
B, C
12
Q
Which type of connection is most likely to require a crossover cable? a. PC to hub b. Hub to router c. Router to switch d. PC to router
A
D
13
Q
How many strands of fiber-optic cable are needed for a network connection? a. 1 b. 2 c. 4 d. 8
A
B
14
Q
Which statement is true about fiberoptic cables? a. MMF uses lasers and has a thicker core. b. SMF uses lasers and has a thinner core. c. MMF uses LEDs and has a thinner core. d. SMF uses LEDs and has a thicker core.
A
B
15
Q
When might you want to use a rollover cable? a. To connect a PC to another PC b. To connect a router to a switch c. To add a switch to a LAN d. To configure a Cisco device
A
D
16
Q
Which of the following wireless technologies does a 802.11 wireless network using the 2.4 GHz frequency range use? a. Infrared b. Narrowband radio c. Frequency hopping d. Direct-sequence spread spectrum
A
D
