Multimode fiber changes the index of reflection in the fiber to slow down light

ID: 3837563 • Letter: M

Question

Multimode fiber changes the index of reflection in the fiber to slow down light near the edge of the fiber so that it arrives closer to the same time as the center-propagated pulses of light.

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Question 2 of 47

2.0 Points

A. 32

B. 64

C. 48

D. 128

E. 16

Question 3 of 47

2.0 Points

A. Analog radio waves

B. Digital light waves

C. Binary signalling such as light pulses

D. Digital signal levels on wired media

E. Binary radio packets

Question 4 of 47

2.0 Points

A. True

B. False

Question 5 of 47

2.0 Points

A. Physical layer

B. MAC

C. TCP Port

D. UDP Port

E. Domain

Question 6 of 47

2.0 Points

A. True

B. False

Question 7 of 47

2.0 Points

Question 8 of 47

2.0 Points

A. Don’t run UTP cables near large electric motors

B. Don’t run electrical cable in the same conduit or cable race as UTP cable

C. Don’t run UTP cables near fluorescent light ballasts

D. Don’t untwist the ends of the cable more than 1/2 inch to crimp on the connectors

E. All of the above are solutions to noise in cables

Question 9 of 47

2.0 Points

A. Ethernet and cable modems

B. Cable modems and dialup modems

C. DSL and WiFi

D. DSL and dialup modems

E. Cable modems and DSL

Question 10 of 47

2.0 Points

A. True

B. False

Question 11 of 47

2.0 Points

A. Make a routing decision

B. Make a switching decision; e.g., decide where to deliver the frame

C. Learn MAC addresses to populate its switching table

D. Send the frame back to its origin

Question 12 of 47

2.0 Points

A. WiFi

B. Ethernet

C. DOCSIS

D. IP

E. All are Layer 2 protocols

Question 13 of 47

2.0 Points

Question 14 of 47

2.0 Points

A. In switch 1’s switching table only

B. In switch 2’s switching table only

C. In switch 3’s switching table only

D. In switch 1 & 2’s switching tables only

E. In the switching tables of 1, 2, and 3.

Question 15 of 47

2.0 Points

A. One

B. Two

C. A finite number of discrete states

D. An infinite number of states

E. None of the above

Question 16 of 47

2.0 Points

Question 17 of 47

2.0 Points

In order to increase the speed of a WiFi link, it is necessary to improve the signal to noise ratio. Which of the following is a practical way to do that?

Move closer to the router to increase signal strength

Move farther away from the router to increase signal strength

Move farther away from the router to decrease noise

Move to a very rural area where there is very little electronic noise.

Question 18 of 47

2.0 Points

A. First row only

B. Rows 0-255, as that is the maximum size of a switching table

C. Until the first match is found

D. All rows, and then a best match is found.

E. None of the above

Question 19 of 47

2.0 Points

A. WEP

B. WPA

C. WPA2

Question 20 of 47

2.0 Points

A. Attenuation

B. Distortion

C. Noise

D. Ohmal

E. None of the above

Question 21 of 47

2.0 Points

A. Attenuation

B. Distortion

C. Noise

D. Ohmal

E. None of the above

Question 22 of 47

2.0 Points

A. Floods it out all ports except the one it arrived on

B. Floods it out all ports

C. Returns it to the sender

D. Sends it to the default gateway (nearest router)

Question 23 of 47

2.0 Points

A. One

B. Two

C. A finite number of discrete states

D. An infinite number of states

E. None of the above

Question 24 of 47

2.0 Points

A. Make a routing decision

B. Make a switching decision; e.g., decide where the frame should be delivered

C. Learn MAC addresses to populate its switching table

D. Send the frame back to its origin

Question 25 of 47

2.0 Points

A. One

B. Two

C. A finite number of discrete states

D. An infinite number of states

E. None of the above

Question 26 of 47

2.0 Points

A. twisted-pair cable

B. coaxial cable

C. fiber-optic cable

D. atmosphere

E. None of the above

Question 27 of 47

2.0 Points

A. Impurities in the glass

B. The Kevlar fibers added to UTP cable for strength when pulling the cables

C. High rates of twisting between pairs of the UTP cable

D. Electrical resistance

E. All of the above contribute to attenuation

Question 28 of 47

2.0 Points

A. IP

B. Ethernet

C. TCP

D. ICMP

Question 29 of 47

2.0 Points

A. 55

B. 10

C. 100

D. 1000

Question 30 of 47

2.0 Points

Question 31 of 47

2.0 Points

Question 32 of 47

2.0 Points

A. True

B. False

Question 33 of 47

2.0 Points

A. Time slots

B. Colors of light

C. Radio power levels

D. None of the above

Question 34 of 47

2.0 Points

A. Impurities in the glass

B. The Kevlar fibers added to UTP cable for strength when pulling the cables

C. Jacketing around the fiber

D. Electrical resistance

E. All of the above contribute to attenuation

Question 35 of 47

2.0 Points

A. single, multiple

B. multiple, single

C. single, single

D. multiple, multiple

Question 36 of 47

2.0 Points

A. Layer 3 packet

B. Layer 2 frame

C. Layer 4 segment

D. Layer 1 message

Question 37 of 47

2.0 Points

A. Coaxial cable

B. UTP - Unshielded Twisted Pair cable

C. Fiber optic cable

D. Radio waves

E. STP - Shielded Twisted Pair cable

F. Telephone cable

Question 38 of 47

2.0 Points

A. 1, 11

B. 23 or 24, 11

C. 11, 23 or 24

D. 23 or 24, 127

E. None of the above

Question 39 of 47

2.0 Points

Question 40 of 47

2.0 Points

A. Attenuation

B. Distortion

C. Noise

D. Ohmal

E. None of the above

Question 41 of 47

2.0 Points