Networking Basics - Ethernet

Question 1

Ethernet

Answer 1

Set of network cabling & network access (CSMA/CD) protocol standards for logical bus topology computer networks invented by Xerox but now controlled by the 602.3 subcommittee of the IEEE

Question 2

Fast Ethernet

Answer 2

100 Mbps Ethernet

Question 3

Gigabit Ethernet

Answer 3

1000 Mbps Ethernet

Question 4

Collision Domain

Answer 4

Area of an Ethernet network where collision can occur

Question 5

Collision

Answer 5

Ethernet condition of multiple interfaces transmitted simultaneously

Question 6

Hub

Answer 6

Physical Layer device that is a multiport repeater

Question 7

Broadcast

Answer 7

Transmission addressed to all stations

Question 8

Broadcast Domain

Answer 8

Area of network where a broadcast will be received by all stations

Question 9

MAC Address

Answer 9

Media Access Control address; A unique identifying number assigning to most network devices

Question 10

Carrier Sense Multiple Access With Collision Detection (CSMA/CD)

Answer 10

Ethernet’s media access control protocol

Question 11

Back Off

Answer 11

To defer transmission

Question 12

Frequency-Division Multiplexing

Answer 12

Combining transmission from multiple stations onto a single communications channel carrying multiple frequency

Question 13

Bit Rate

Answer 13

Frequency at which bits pass a given physical/metaphorical point - measured in bps

Question 14

bps

Answer 14

Bits per second

Question 15

Bps

Answer 15

Bytes per second

Question 16

Baud Rate

Answer 16

Number of signaling events per second

Question 17

Wavelength

Answer 17

Length of a single cycle of a wave - measured by the distance between 1 peak or through a wave & the next

Question 18

MAC Address

Answer 18

MAC address, sometimes referred to as a hardware / physical address, is a unique, 12-character alphanumeric attribute that is used to identify individual electronic device on a network

Question 19

Decimal

Answer 19

Value in a base-10 numbering system

Question 20

Nibble

Answer 20

Half a byte; 4 bits

Question 21

Octet

Answer 21

1 byte; 8 bits

Question 22

Set Bit

Answer 22

Binary number is represented by 1

Question 23

Hexadecimal

Answer 23

Base-16 numbering system

Question 24

Network Interface Card (NIC)

Answer 24

Hardware that connects to a computer to a network

Question 25

Organizationally Unique Identifier (OUI)

Answer 25

First 24 bits of a MAC address - identifies the manufacturer of the NIC

Question 26

Unicast

Answer 26

Transmission address to 1 station

Question 27

Multicast

Answer 27

Transmission address to multiple stations

Question 28

Broadcast

Answer 28

Transmission addressed to all stations

Question 29

Burned-In-Address (BIA)

Answer 29

MAC address permanently assigned to a NIC

Question 30

Frame

Answer 30

Unit of Ethernet data at Data Link Layer

Question 31

Cyclic Redundancy Check (CRC)

Answer 31

Checksum which provides error checking

Question 32

Preamble

Answer 32

First field of an Ethernet Frame; 56 bits

Question 33

Start of a Frame Delimiter (SOF)

Answer 33

Last byte of an Ethernet frame preamble; 8 bits

Question 34

Destination Address (DA)

Answer 34

48-bit MAC address of the receiving device

Question 35

Source Address (SA)

Answer 35

48-bit MAC address of the transmitting advice

Question 36

Ethernet II Frame

Answer 36

Ethernet version 2: "DIX frame"

Question 37

Frame Check Sequence (FCS)

Answer 37

Last field of an Ethernet frame which provides the CRC value for error checking

Question 38

Attenuation

Answer 38

Signal loss over distance

Question 39

Attachment Unit Interface (AUI)

Answer 39

Physical & logical interface defined in the original IEEE 802.3 standard for 10BAse5 Ethernet & the previous DIX standard

Question 40

Legacy

Answer 40

Old computer system / application program that continues to be used b/c owner does not want to replace/redesign it

Question 41

Repeater

Answer 41

Physical Layer device that regenerates signals to mitigate the effect of attenuation

Question 42

Maximum Transmission Unit (MTU)

Answer 42

Largest amount of data caries by a single packet of a given networking protocol