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Net+ -007 CertMaster > Lesson 2: Properties of Network Traffic > Flashcards

Lesson 2: Properties of Network Traffic Flashcards

1
Q

Two forms of cabled media

A

(Bounded)
Copper
Fiber optic

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2
Q

Wireless media is

A

(Unbounded)

Radio waves

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3
Q

Baseband transmission

A

Digital signaling

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4
Q

What are cycles per second measured in?

A

Hertz (Hz)

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5
Q

Bandwidth

A

Range of frequencies available

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6
Q

What is multiplexing?

A

Time or frequency division

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7
Q

Baud rate vs. bit rate

A

Baud rate in hertz (Hz)

Bit rate in bits per second (bps)

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8
Q

CSMA/CD

Collision detection

A

Wired

Used by legacy devices and hubs

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9
Q

CSMA/CA

Collision avoidance

A

Wireless

Half-Duplex

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10
Q

Half-Duplex

A

One device can talk at a time

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11
Q

Attenuation

A

Loss of signal strength measured in decibels (dB)

Ratio of signal strength at source to signal strength at destination

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12
Q

Noise

A

Stray or unwanted signals interfering with intended signal

Signal to noise ratio (SNR)

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13
Q

Collision domain issues are associated with what OSI layer?

A

Layer 1

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14
Q

Copper cable

A

Low voltage electrical circuit
Twisted pair and coax types
Subject to high attenuation and interference

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15
Q

Fiber optic cable

A

Light signals

Less susceptible to attenuation and interference

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16
Q

Wireless radio

A 
Radio frequencies (RF)
Limitations on RF usage and power output affect range
2.4 GHz and 5 GHz
Susceptible to interference
17
Q

Broadcast

A

One to all

18
Q

Multicast

A

One to many

19
Q

Unicast

A

One to one

20
Q

Broadcast domain boundaries

A

Established by routers at layer 3

Bridges and switches normally flood broadcast traffic

21
Q

What can Virtual LANs be used for?

A

Can be used to isolate switch ports separate broadcast domains

22
Q

(T/F) Is layer 2 of the OSI model capable of Full Duplex?

A

True

23
Q

Ethernet is

A

The principal wired LAN technology

Layer 1

24
Q

Addressing contains __ MAC addresses

A

Two, source and destination

25
Q

What is the default size of a MTU?

A

Maximum Transmission Unit

1500 bytes

26
Q

What is the purpose of FCS?

A

Frame Check Sequence

Error checking, if error is detected the FCS will not fix data

27
Q

100BASE-TX

100BASE-FX

A

Fast Ethernet

  • TX (Twisted pair)
  • FX (Fiber optic)
28
Q

1000BASE-T
1000BASE-SX
1000BASE-LX

A 
Gigabit Ethernet
-T (use all 4 wire pairs)
Fiber optic
-SX (LANs)
-LX (WANs)
29
Q

10GBASE-T
10GBASE-SR
10GBASE-LR

A

10 Gigabit Ethernet

  • T (local area copper)
  • SR (local area fiber/short range)
  • LR/ER (wide area fiber/long range)
30
Q

What is Wireshark?

A

packet sniffer

Net+ -007 CertMaster (5 decks)

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