Cabling and Topology

Question 1

Name the network topologies

Answer 1

bus, ring, star, hybrid, mesh, point-to-point. point-to-multipoint

Question 2

A network that uses a single bus cable that connects all of the computers in a line

Answer 2

Bus Topology

Question 3

A network topology in which all the computers on the network attach to a central ring of cable

Answer 3

Ring Topology

Question 4

The entire network stops working if the cable breaks at any point in which topologies?

Answer 4

Bus and Ring

Question 5

A network topology in which all computers in the network connect to a central wiring point

Answer 5

Star Topology

Question 6

The capability of any system to continue functioning after some part of the system has failed

Answer 6

Fault Tolerance

Question 7

The manner in which the physical components of a network are arranged

Answer 7

Physical Topology

Question 8

What is Signaling Topology

Answer 8

How the signal travel electronically

Question 9

What is a hybrid topology?

Answer 9

A mix or blend of two different topologies. Ex star-bus topology

Question 10

Topology in which each computer has a direct or indirect connection to every other computer in a network. Any node on the network can forward traffic to other nodes. Popular in cellular and many wireless networks.

Answer 10

Mesh Topology

Question 11

Name the two types of meshed topologies

Answer 11

partial and full meshed topologies

Question 12

A mesh topology in which not al of the nodes are directly connected

Answer 12

Partially Meshed Topology

Question 13

A mesh network where every node is directly connected to every other node

Answer 13

Fully Meshed Topology

Question 14

Topology in which one device communicates with more than one other device on a network

Answer 14

Point-to-Multipoint Topology

Question 15

What is the difference between star and point-to-multipoint topology?

Answer 15

Point-to-point requires a intelligent device in the center

Question 16

Network topology in which two computers are directly connected to each other without any other intervening connection components such as hubs or switches

Answer 16

Point-to-Point

Question 17

A practical application of a topology and other critical technologies that provides a method to get data from one computer to another on a network

Answer 17

Network Technology

Question 18

A type of cable that contains a central conductor wire surrounded by an insulating material, which in turn is surrounded by a braided metal shield.

Answer 18

Coaxial Cable

Question 19

What does coaxial cable shield data transmissions from?

Answer 19

Electromagnetic interference (EMI)

Question 20

Interference from one device to another, resulting in poor performance in the device’s capabilities.

Answer 20

Electromagnetic Interference (EMI)

Question 21

Ratings developed by the U.S. military to provide a quick reference for the different types of coaxial cables

Answer 21

Radio Grade Ratings (RG)

Question 22

Electronic measurement of a cable’s or an electronic component’s impedance.

Answer 22

Ohm Rating

Question 23

Describes a set of characteristics that define how much a cable resists the flow of electricity — also how long it takes the wire to get a full charge — the wire’s capacitance – and more

Answer 23

Impedance

Question 24

The most common type of cabling used in networks consist of ____ of cables bundled together into a common jacket

Answer 24

Twisted Pair

Question 25

What does the twisted pair prevent?

Answer 25

Crosstalk

Question 26

Electrical signal interference between two cables that are in close proximity to each other

Answer 26

Crosstalk

Question 27

Name the two types of twisted-pair cabling

Answer 27

shielded and unshielded twisted pair (STP, UTP)

Question 28

Consists of twisted pairs of wire surrounded by shielding to protect them from EMI

Answer 28

Shielded twisted pair (STP)

Question 29

When is STP needed?

Answer 29

Locations with excessive electronic noise, such as hop floor with lots of lights, electric motors, or other machinery that could cause problems for other cables

Question 30

Unshielded twisted pair (UTP)

Answer 30

- consists of twisted pairs of wire surrounded by a plastic jacket - jacket doesn't provide protection from EMI - cost less than STP - in most cases performs just a well

Question 31

A grade assigned to cable to help network installers get the right cable for the right network technology

Answer 31

Category Rating (CAT)

Question 32

CAT is rating are rated in ___?

Answer 32

Megahertz (MHz)

Question 33

Megahertz

Answer 33

Indicates the highest frequency the cable can handle

Question 34

CAT 3

Answer 34

Max Frequency - 16MHz Max Bandwidth - 16Mbps Status with TIA/EIA - Recognized

Question 35

CAT 5

Answer 35

Max Frequency - 100MHz Max Bandwidth - 100Mbps Status with TIA/EIA - No longer recognized

Question 36

CAT 5e

Answer 36

Max Frequency - 100MHz Max Bandwidth - 1000Mbps Status with TIA/EIA - Recognized

Question 37

CAT 6

Answer 37

Max Frequency - 250MHz Max Bandwidth - 10,000Mbps Status wit TIA/EIA - Recognized

Question 38

CAT 6a

Answer 38

Max Frequency - 500MHz Max Bandwidth - 10,000Mbps Status with TIA/EIA - Recognized

Question 39

Frequency stands for what?

Answer 39

Cycles per second such as 100MHz

Question 40

The maximum amount of data that goes through the cable per second is called _____

Answer 40

Bandwidth

Question 41

Current networks developer implemented bandwidth-efficient encoding schemes, What does that mean?

Answer 41

They can squeeze more bits into the same signal as long as the cable can handle it. Ex. CAT 5e can handle a throughput of up to 1000Mbps although it only rated to handle up to 100MHz

Question 42

Connectors used for UTP cable on both telephone and network connections

Answer 42

RJ (Registered Jack)

Question 43

Type of connector with four-wire UTP connections, usually found in telephone connections

Answer 43

RJ- 11 connectors

Question 44

Type of connector with eight-wire UTP connections, usually found in network connections and used for 10/100/1000BaseT networking

Answer 44

RJ-45

Question 45

A high speed physical medium for transmitting data that uses light rather than electricity to transmit data and is made of high purity glass fibers sealed within a flexible opaque tube.

Answer 45

Fiber-Optic Cable

Question 46

What are the four components of fiber optic cables

Answer 46

The Core (glass fiber itself), Cladding (the part that makes the light reflect down the fiber) Buffer (material that give strength) and the insulating jacket

Question 47

Type of fiber-optics that uses LED's

Answer 47

Multimode Fiber (MMF)

Question 48

Fiber-optic cables that use lasers

Answer 48

Single-Mode Fiber (SMF)

Question 49

Signals sent at the same time don't arrive at the same time because the paths differ slightly in length

Answer 49

Modal distortion (a flaw in MMF)

Question 50

Almost all MMF cables transmit at what rate?

Answer 50

850nm

Question 51

SMF transmit at what rate?

Answer 51

1310 or 1550nm depending on the laser

Question 52

Name the four types of fiber optic connector types

Answer 52

ST, SC, LC, and FC

Question 53

Fiber optic connector used primarily with 2.5mm, single-mode fiber. It uses a push on, then twist-to-lock mechanical connection commonly called stick-and-twist

Answer 53

ST Connector aka Straight Tip

Question 54

Fiber optic connector used to terminate single-mode and multi-mode fiber. It is characterized by its push-pull, snap mechanical coupling known as stick and click

Answer 54

SC Connector aka subscriber connector aka standard connector aka square connector

Question 55

One popular type of small form factor (SSF) connector, considered by many to be the predominate fiber connector

Answer 55

Local Contector (LC)

Question 56

A description of later-generation, fiber optic connectors designed to e much smaller hat the first iterations of connectors

Answer 56

Small Form Factor (SFF)

Question 57

A screw on connector used to terminate small-diameter coaxial cable such as RG-6 and RG-59 cables

Answer 57

F- Connector

Question 58

A duplex type of SFF fiber connector designed to accept two fiber cables

Answer 58

LC Connector aka little connector

Question 59

Duplex

Answer 59

can send and receive

Question 60

A 9-pin D shaped subminiature connector used in serial port connections

Answer 60

DB-9

Question 61

A 25-pin D shaped subminiature connector typically use in parallel and older serial port connections

Answer 61

DB-25

Question 62

Parallel connections are limited to which topology

Answer 62

point-to-point

Question 63

Name the two common fire rating

Answer 63

PVC and Plenum

Question 64

What is the difference between PVC and Plenum

Answer 64

PVC has no significant fire protection, It creates lots of smoke and noxious fumes Plenum creates much less smoke and fumes but cost 5x as much as PVC

Question 65

Industry wide standards that promote the use and implementation of technology

Answer 65

Institute of Electrical and Electronics Engineers (IEEE)

Question 66

IEEE 802.3

Answer 66

Ethernet (with a ton of subcommittees, such as 802.3ae for 10-Gigabit Ethernet)

Question 67

IEEE 802.11

Answer 67

Wireless LAN (WLAN) specification such as Wi-Fi and many subcommittees

Question 68

Which topology requires termination?

Answer 68

Bus - The cable must be terminated at both ends to prevent signal reflection

Question 69

Star-bus is an example of what type of topology

Answer 69

Hybrid

Question 70

Which topology is the most fault tolerant?

Answer 70

Star

Question 71

What term is used to describe the interconnectivity of network components?

Answer 71

Topology

Question 72

Coaxial cables have what type of rating

Answer 72

Ohm

Question 73

Name a type of coaxial cable

Answer 73

RG-59

Question 74

Which network topology connects nodes with a ring of cable?

Answer 74

Ring

Question 75

Which network topology is most commonly seen only in wireless networks?

Answer 75

Mesh

Question 76

Name a duplex fiber optic connection

Answer 76

LC