Lesson 2: explaining properties of net traffic Flashcards by Peter C

Q

cabled media (boundless) meaning

A

grounded copper/fiber cables

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Q

wireless media(unbounded) meaning

A

radio waves

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Q

baseband transmission =

A

digital signaling

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Q

what does baud rate use?

A

symbols

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Q

bit rate is (analogy)

A

speed you can travel on highway

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Q

bandwidth is (analogy)

A

size of highway

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Q

collision domains is what layer’s issue?

A

layer 1

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Q

collision domains issue involving wifi/legacy

A

layer 2

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Q

half-duplex means

A

only 1 device can talk at a time

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Q

CSMA/CD (w/collision detection)

A

wired and legacy

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Q

CSMA/CA (w/collision avoidance)

A

wireless

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Q

is wi-fi half duplex?

A

yes

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Q

All layer 1 devices can ____

A

broadcast

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Q

broadcast domain is determined by __

A

layer 3 devices

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Q

layer 3 can what?

A

broadcast, multicast, and unicast

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Q

layer 2 (frame) has ___ MAC addresses

A

two

Q

FCS (frame check sequence) does what

A

makes sure data is valid

Q

does FCS fix data?

A

NO

Q

default size of MTU

A

1500 bytes