Ethernet Basics

Question 1

What is a network technology standard based on a bud topology?

Answer 1

Ethernet

Question 2

The ____ committee defines wired network standards that share the same basic frame type and network access method.

Answer 2

802.3

Question 3

What 802.3 standard is the following?

10Mbps Ethernet using twisted pair cabling

Answer 3

802.3i

Question 4

What 802.3 standard is the following?

Gigabit Ethernet over twisted pair

Answer 4

802.3ab

Question 5

What 802.3 standard is the following?

25 Gigabit Ethernet over fiber

Answer 5

802.3by

Question 6

All network technologies break data transmitted between computers into smaller pieces called ____.

Answer 6

Frames

Question 7

What is the bus cable to which the computers on an Ethernet network connect?

Answer 7

Segment

Question 8

The MAC address of the frame’s recipient is the ___.

Answer 8

Destination

Question 9

The MAC address of the sending system is the ___.

Answer 9

Source

Question 10

Transmission of a frame starts with a ____.

Answer 10

Preamble

Question 11

What is a 7-byte series of alternating ones and zeros?

Answer 11

Preamble

Question 12

What are special 48-bit(6-byte) binary addresses?

Answer 12

MAC addresses

Question 13

What is the minimum Ethernet frame size?

Answer 13

64 bytes

Question 14

If an Ethernet frame has fewer than 64 bytes of data to haul, the sending NIC will automatically ___ extra data.

Answer 14

Add

Question 15

What enables Ethernet nodes to recognize when bad things happen to good data?

Answer 15

Frame check sequence (FCS)

Question 16

What interprets the ones and zeros coming in from one port and repeats the same signal out to the other connected ports?

Answer 16

Repeater

Question 17

____ means that the cable only carries one type of signal.

Answer 17

Baseband

Question 18

____ means the cable carries multiple signals or channels.

Answer 18

Broadband

Question 19

An Ethernet LAN designed to run on UTP cabling that runs at 10 Mbps and uses baseband signaling is called ___.

Answer 19

10BaseT

Question 20

NICs that can communicate in only one direction at a time run in ____ mode.

Answer 20

Half-duplex

Question 21

NICs that send and receive at the same time run in ____ mode.

Answer 21

Full-duplex

Question 22

The act of installing a crimp o ton one end of a piece of UTP cable is called ___.

Answer 22

Crimping

Question 23

The tool used to secure a crimp onto the end of a cable is a ____.

Answer 23

Crimper

Question 24

____ means that all machines have equal access to the wire.

Answer 24

Multiple access

Question 25

A group of nodes that have the capability of sending frames at the same time as each other, resulting in collisions is called ___.

Answer 25

Collision domain

Question 26

What acts like a repeater to connect two networks and filters and forwards traffic between those segments based on the MAC addresses of the computers on those segments?

Answer 26

Bridge

Question 27

What is a table of MAC addresses of each connected computer?

Answer 27

Source address table (SAT)

Question 28

A Layer 2 multi port device that filters and forwards frames based on MAC addresses is called a ___.

Answer 28

Switch

Question 29

What is a port on a switch that enables you to connect two switches together using a straight-through cable?

Answer 29

Uplink port

Question 30

What are cables used to connect hosts to switches and are the connective opposite of crossover cables?

Answer 30

Straight-through cable

Question 31

What cables reverse the sending and receiving pairs on one end of the cable?

Answer 31

Crossover cable

Question 32

Special STP frames where switches communicate with other switches to prevent loops from happening in the first place are ___.

Answer 32

Bridge protocol data units (BPDUs)

Question 33

A BPDU that enables switches to rework themselves around the failed interface or device.

Answer 33

Topology change notification(TCN)

Question 34

A setting configured to enable the interface to come up right away without the normal latency introduced by STP.

Answer 34

PortFast

Question 35

A mechanism that will move a port into a root-inconsistent state if BPDUs coming from a certain direction indicate another switch is trying to become the root bridge.

Answer 35

Root guard

Question 36

The two categories of switch problems are:

Answer 36

1. Obvious physical damage | 2. Dead ports

Question 37

Ethernet hubs take an incoming packet and ___ it out to the other connected ports.

Answer 37

Repeat

Question 38

What is appended to the beginning of the Ethernet frame?

Answer 38

Preamble

Question 39

What type of bus does 10BaseT use?

Answer 39

Star bus

Question 40

What is the maximum distance that can separate a 10BaseT node from its hub?

Answer 40

100 meters

Question 41

When used for Ethernet, unshielded twisted pair uses what type of connector?

Answer 41

RJ-45

Question 42

What is the maximum number of nodes that can be connected to a 10BaseT hub?

Answer 42

1024

Question 43

Which of the following is not true of crossover cables? A. They are a type of twisted-pair cabling. B. They reverse the sending and receiving wire pairs. C. They are used to connect hubs. D. Both ends of a crossover cable are wired according to the TIA/EIA 568B standard.

Answer 43

D.

Question 44

Which of the following connectors are used by 10BaseFL cable? (Select two.) A. SC B. RJ-45 C. RJ-11 D. ST

Answer 44

A & D

Question 45

Which networking devices can use the Spanning Tree Protocol(STP)?

Answer 45

Switches

Question 46

What device directs packets based on MAC addresses?

Answer 46

Switch