Ethernet Basics

Question 1

Define Ethernet

Answer 1

Networking technology standard based on a bus topology

Question 2

Define 802.3i standard

Answer 2

10 Mbps Ethernet using twisted pair cabling (1990)

Question 3

Define 802.3ab standard

Answer 3

Gigabit Ethernet over twisted pair (1999)

Question 4

Define 802.3by standard

Answer 4

25 Gigabit Ethernet over fiber (2016)

Question 5

What two issues does the use of frames address?

Answer 5

1. Prevent any single machine from monopolizing the shared bus cable
2. Make the process of transmitting lost data more efficient

Question 6

What is a segment?

Answer 6

Bus cable to which the computers on an Ethernet network connect

Question 7

A basic Ethernet frame contains what five fields?

Answer 7

1. Destination
2. Source
3. Type
4. Data
5. Frame check sequence(FCS)

Question 8

Transmission of a frame starts with a _______.

Answer 8

Preamble

Question 9

What is a preamble?

Answer 9

7-byte series of alternating ones and zeroes

Question 10

The minimum Ethernet frame is _____ bytes in size.

Answer 10

64

Question 11

What is a pad?

Answer 11

Extra data added by the sending NIC when the Ethernet frame has fewer than 64 bytes of data to haul

Question 12

What does a repeater do?

Answer 12

Interprets one’s and zeroes coming in from one port and repeats the same signal out to the other connected computers

Question 13

Describe a baseband.

Answer 13

The cable only carries one type of signal

Question 14

Describe a broadband.

Answer 14

The cable carries multiple signals or channels

Question 15

Describe half-duplex mode.

Answer 15

NIC’s that can communicate in only one direction at a time

Question 16

Describe full-duplex mode.

Answer 16

NIC’s that can send and receive at the same time

Question 17

What is a crimper?

Answer 17

Tool used to secure a crimp into the end of a cable