Network+ Chapter 4

Front 1

Hub

Back 1

electronic repeater that interprets ones and zeros from one port and repeats the same signal out to the other ports. It does not send the signal back to the original port.

Front 2

What 2 networking issues does frames address

Back 2

1/ frames prevent any single machine from monopolizing the shared bus cable

2/ they make the process of retransmitting lost data more efficient.

Front 3

What is a (network) segment?

Back 3

portion of a computer network that is separated from the rest of the network by a device such as a repeater, hub, bridge, switch or router.

Front 4

Every version of the Ethernet since the early 1990s uses a hybrid _______ _____ topology.

Back 4

Star-bus

Front 5

A basic Ethernet frame contains ___ pieces of information.

Back 5

6 (preamble, Recipient MAC, Sender MAC, Type, Data, Pad, FCS

Front 6

What is the 7-byte binary data followed by a 1 byte Start Frame.

Back 6

Preamble of a frame

Front 7

Node is another name for a _______.

Back 7

NIC

Front 8

48-bit ( 6 byte) binary address

Back 8

MAC address

Front 9

Network diagnostic programs that can order the NIC to run in promiscuous mode to analyze all packets on the cable regardless of address.

Back 9

Sniffers

Front 10

The _____ section of a frame tells you what kind of data is in the frame on a very basic level. For example, it could show if its IPv4 or IPv6.

Back 10

Type

Front 11

The ________ part of the frame contains whatever payload the frame carries.

Back 11

Data

Front 12

Added data to bring the data up to the minimum 64 bytes when needed.

Back 12

Pad

Front 13

____________enable Ethernet nodes to recognize when bad things happen to good data.

Back 13

FCS - Frame Check Sequence

Front 14

CSMA/CD

Back 14

Carrier Sense Multiple Access/Collision Detection

is a network access method that maps to IEEE 802.3 standard for Ethernet networks.

Front 15

In an Ethernet network, a ___________ __________ is a group of nodes that have the capability of sending frames at the same time as each other, resulting in collisions.

Back 15

Collision Domain

Front 16

In the Thicknet network, devices tapped directly into a thick yellow cable that snaked through the network. What type of cable was used

Back 16

10Base5

Front 17

The last true bus Ethernet standard, called __________ or thinnet, fudged on the single wire concept by having wires connect at a NIC into a T connector.

Back 17

10Base2

Front 18

The Thinnet or 10Base2 network used ________ cable and _________ connectors. The complete network was limited to 185 meters.

Back 18

RG-58, BNC

Front 19

The classic __________ network consists of 2 or more computers connected to a central hub.

Back 19

10BaseT

Front 20

The more __________ a hub; has the more expensive it is.

Back 20

Ports

Front 21

If you ever run into a situation on a 10BaseT or later network in which none of the computers can get on the network, always check the ________ first!

Back 21

Hub

Front 22

10BaseT stands for...

Back 22

10 is for speed - 10Mbps

Base- Baseband (one type of signal)

T- twisted pair (usually unshielded twisted pair)

Front 23

What type of cable does 10BaseT require?

Back 23

CAT3 or higher (UTP)

Front 24

________ is an eight-wire connector (on the end of a twisted pair cable) used commonly to connect computers onto a LAN.

Back 24

RJ-45 ( also, crimp)

Front 25

The act of installing a RJ-45 connector on the end or a UTP cable is called_______. A __________ is used to secure it on the end.

Back 25

crimping, crimper

Front 26

TIA/EIA 568A

Back 26

G/w,G,O/w,B,B/w,O,Br/w,Br

Front 27

TIA/EIA 568B

Back 27

O/w,O,G/w,B,B/w,G,Br,Br/w

Front 28

The 10BaseT node limit is ______ nodes per hub. The distance limit is _____ meters.

Back 28

1024 and 100

Front 29

The 10BaseT topology is ________________ topology

Back 29

Star-bus

Front 30

10BaseFL uses _____________fiber-optic and uses either a_______ or a _____ connector.

Back 30

multimode, ST, SC

Front 31

Fiber optic address what three weakness of copper cabling?

Back 31

1) Light travels farther

2) Light is immune to electrical interference

3) The cable is much more difficult to tap into, making it a good choice for environments with security concerns

Front 32

All fiber-optic networks use at least ___ fiber-optic cables

Back 32

2- sending and receiving

Front 33

10BaseFL's speed is _________ and distance is _________

Back 33

10Mbps and 2000meters (2kilometers)

Front 34

10BaseFL has _________fiber-optic cable,_______ topology and _________ node limit.

Back 34

multimode, star-bus, 1024

Front 35

Media converter

Back 35

interconnects different Ethernet types of cable.

Front 36

The __________, female connectors on both ends, enable you to connect a machine in a location not originally envisioned when a network was installed.

Back 36

couplers

Front 37

You can connect hubs 2 ways. An _______ _______ and a __________ ________. You can also connect in a _________ organization if using full-duplex mode)

Back 37

Uplink port , crossover cable, tree(or hierarchical)

Front 38

Cross over, MDI-X, and OUT ports are other names for a _______________ port.

Back 38

Uplink

Front 39

You can only connect more than hubs through a ___________-_________.

Back 39

Daisy-chain

Front 40

A MDI is a __________ port, while, a MDI-X is an_________ port

Back 40

regular, uplink

(media dependent interface and media dependent interface crossover)

Front 41

crossover cable reverses the _______ and the _________ pair of wires.

Back 41

sending, receiving (TIA/EIA 568A on one side, TIA/EIA 568B on the other)

Front 42

A__________ cable has a RJ-45 on one end and a class RS-232 serial port on the other. It's used to connect a NIC to a Cisco switch or a router.

Back 42

Rollover

Front 43

A________________ acts like a repeater or hub except it filters and forwards traffic between 2 segments based on MAC addresses of the computers.

Back 43

Bridge

Front 44

The Ethernet ________ looks like a hub but com with extra smarts that enable it to effectively create a point to point connections between to conversing computers. And give the conversation full bandwidth of the network.

Back 44

Switch

Front 45

The switch copies the source MAC address and creates a table of MAC addresses of each connected computer called a ________________.

Back 45

SAT (Source Address Table)

Front 46

Each port on the switch is its own __________ ___________.

Back 46

collision domain

Front 47

With _________-__________ switches, collisions can occur and the rules of CSMA/CD apply.

Back 47

Half-duplex

Front 48

With full-duplex Ethernet, ______-____ is disabled and no collisions can occur.

Back 48

CSMA/CD

Front 49

You'll commonly hear a switched network called a __________ ________ to contrast it to a hub-based network with its _______ _______.

Back 49

Broadcast domain, collision domain

Front 50

Switches with ________enabled can detect loops, communicate with other switches, and set looped port's state to blocking.

Back 50

STP

Front 51

The original spanning tree (STP) protocol, IEEE _______, was replaced with Rapid Spanning Tree Protocol(RSTP), IEEE _____.

Back 51

802.1d, 802.1w

Front 52

Switching loops are also known as

Back 52

Bridging loops

Front 53

Bridge Protocol Data Unit (BPDU)

Back 53

is a frame STP-enable switches use to communicate with each other to determine things like the distances between them and to keep track of changes on the network

Front 54

When a change happens on the network, such as a switch getting replaced, the STP-enabled switches will receive frames from MAC addresses not contained in their MAC address table. At that point, they send out a query on every port to find the location of the new device, a process called___________.

Back 54

flooding

Front 55

The 10Base5 length limit is ________

Back 55

500 meters