Review Questions - Chapter 2 Ethernet Networking and Data Encapsulation

Backoff

Carrier sense

Forward delay

Jamming

This is a 10 Mbps switch port.

This is a 100 Mb/s switch port.

This is an Ethernet port operating at half-duplex.

This is an Ethernet port operating at full-duplex.

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

Bit rate: 9600

Parity: None

Flow control: None

Data bits: 1

FCS

I/G bit

OUI

U/L bit

A jam signal informs all devices that a collision occurred.

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

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

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

There are very few collisions in full-duplex mode.

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

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

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

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

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

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

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

Crossover

Rollover

Straight-through

Full-duplex

IP address and MAC address

IP address and port number

Port number and MAC address

MAC address and DLCI

1c

12

15

ab