Review Questions - Chapter 2 Ethernet Networking and Data Encapsulation

Question

1. In the accompanying graphic, what is the name for the section of the MAC address marked as unknown?

Answer 1

Carrier sense

Answer 2

Forward delay

Answer 3

Allows the receiving devices to lock the incoming bit stream.

Answer 4

Error detection

Answer 5

Identifies the upper-layer protocol

Answer 6

Identifies the transmitting device

Answer 7

This is a 10 Mbps switch port.

Answer 8

This is a 100 Mb/s switch port.

Answer 9

This is an Ethernet port operating at half-duplex.

Answer 10

This is an Ethernet port operating at full-duplex.

Answer 11

This is a port on a network interface card in a PC.

Answer 12

To uniquely identify devices at layer 2

Answer 13

To allow communication with devices on a different network

Answer 14

To differentiate a layer 2 frame from a layer 3 packet

Answer 15

To establish a priority system to determine which device gets to transmit first

Answer 16

To allow communication between different devices on the same network

Answer 17

To allow detection of a remote device when its physical address is unknown

Answer 18

With a connection from a switch to a switch

Answer 19

With a connection from a router to a router

Answer 20

With a connection from a host to a host

Answer 21

With a connection from a host to a switch

Answer 22

When they receive a special token

Answer 23

When there is a carrier

Answer 24

When they detect that no other devices are sending

Answer 25

When the medium is idle

Answer 26

When the server grants access

Answer 27

Fiber optic

Answer 28

Crossover Gigabit Ethernet cable

Answer 29

Straight-through Fast Ethernet

Answer 30

Bit rate: 9600

Answer 31

Parity: None

Answer 32

Flow control: None

Answer 33

Data bits: 1

Answer 34

Fiber optic

Answer 35

Straight-through

Answer 36

A jam signal informs all devices that a collision occurred.

Answer 37

The collision invokes a random backoff algorithm on the systems involved in the collision.

Answer 38

Each device on the Ethernet segment stops transmitting for a short time until its backoff timer expires.

Answer 39

All hosts have equal priority to transmit after the timers have expired.

Answer 40

There are very few collisions in full-duplex mode.

Answer 41

A dedicated switch port is required for each full-duplex node.

Answer 42

The host network card and the switch port must be capable of operating in full-duplex mode to use full-duplex.

Answer 43

The default behavior of 10Base-T and 100Base-T hosts is 10 Mbps half-duplex if the autodetect mechanism fails.

Answer 44

A= crossover, B= crossover

Answer 45

A= crossover, B= straight-through

Answer 46

A= straight-through, B= straight-through

Answer 47

A= straight-through, B= crossover

Answer 48

IEEE 802.3u ::::::: 100Base-Tx IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 1000Base-SX

Answer 49

IEEE 802.3u :::::::1000Base-T IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 100Base-Tx IEEE 802.3z ::::::: 1000Base-SX

Answer 50

IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 10Base-T IEEE 802.3ab ::::: 1000Base-T IEEE 802.3z ::::::: 100Base-Tx

Answer 51

IEEE 802.3u ::::::: 1000Base-SX IEEE 802.3 ::::::::: 1000Base-T IEEE 802.3ab ::::: 10Base-T IEEE 802.3z ::::::: 100Base-Tx

Answer 52

Straight-through

Answer 53

Full-duplex

Answer 54

IP address and MAC address

Answer 55

IP address and port number

Answer 56

Port number and MAC address

Answer 57

MAC address and DLCI

Answer 58

Fiber optic

Answer 59

Full-duplex

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Review Questions - Chapter 2 Ethernet Networking and Data Encapsulation

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Pregunta 3

Pregunta 4

Pregunta 5

Pregunta 6

Pregunta 7

Pregunta 8

Pregunta 9

Pregunta 10

Pregunta 11

Pregunta 12

Pregunta 13

Pregunta 14

Pregunta 15

Pregunta 16

Pregunta 17

Pregunta 18

Pregunta 19

Pregunta 20

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