What was the problem that bus and ring topology networks suffered from? (pg. 46)

A. Little flexibility

B. They were highly expensive

C. Required termination on both tends

D. No fault tolerance

D. The entire network stopped working if the cable broke at any point.

The broken ends on a bus network didn't have the required termination, which caused reflection between computers that were still connected. A break in a ring network broke the circuit and stopped data flow.

Otherwise, bus and ring networks were inexpensive and allowed for easy redesigns, and only a bus topology required termination.

Star topologies had a huge benefit over ring and bus topologies by offering ___ (pg. 46)

A. World Wide Web access

B. Cheaper infrastructure

C. Fault tolerance

D. Windows support

What is the difference between physical topology and signal/logical topology? (pg. 48)

 A. The type of device (PC, smartphone, etc.) versus the medium it uses for communications.

B. Where the network devices are found versus which switch they send communications on.

C.  Physical topology uses wired cables but signal/logical topology uses wireless access points.

D. How the cables look versus how the signals travel.

D. Physical topology is how the cables physically look, while logical topology refers to how the signals travel electronically.

A wireless topology network where every computer connects to every other computer via two or more routes. (pg. 49)

A. mesh

B. bus

C. star

D. ring

A. Wireless devices can connect in a mesh topology network. Some of the routes between two computers may require traversing through another member of the mesh network.

The other network topologies were designed for wired networks.

What are the two types of meshed topologies, and what is the primary difference between them? (pg. 49)

A. hub-and-spoke

B. fully meshed

C. partially meshed

D. hybrid

B. and C. A partially meshed topology network has at least two machines with redundant connections; every machine doesn't need a direct connection. Every computer connects directly to every other computer in a fully meshed topology network.

A(n) ___ topology network used a single cable that connected all of the computers in a line. (pg. 44)

A. I

B. fully meshed

C. bus

D. ring

C. Bus

An "I" topology doesn't actually exist.

A practical application of a topology and other critical tools that provides a method to get data from one computer to another on a network. (pg. 49)

A. Internet service provision

B. Web browsing

C. network technology

D. domain networking

C. Network technologies have names like 100BASE-T, 1000BASE-LX, and 10GBASE-T.

The most common form of cabling uses ___ wire wrapped up in some kind of protective sheathing. (pg. 50)

A. aluminum

B. nickel

C. fiber-optic

D. copper

D. The two primary types of copper cabling used in the industry are coaxial and twisted pair.

Aluminum and nickel aren't used in networking, and fiber-optic wiring isn't as popular as copper.

A copper cable that contains a central conductor wire surrounded by an insulating material and braided metal shield that protects data transmissions from interference. (pg. 50)

A. coaxial

B. lightning

C. fiber-optic

D. shielded twisted pair (STP)

A. Coaxial cable

The lightning connector is used to connect to Apple mobile devices.

Fiber-optic and STP cabling don't utilize copper in their wiring.

An electrical current that is generated along a metal wire when it encounters a magnetic field. (pg. 51)

A. conduit

B. pulse

C. electromagnetic interference (EMI)

D. radio frequency interference (RFI)

C. Electromagnetic interference (EMI) can shut down a network because it is easily misinterpreted as a signal by devices like NICs.

A conduit is

RFI disrupts Wi-Fi signals with radio signals from another device.

What is these devices is NOT typically  used with coaxial cable today? (pg. 52)

A. satellite dishes

B. Home theaters/surround sound systems
C. over-the-air antennas

D. cable modems

B. Coaxial cable is primarily used to connect a computer to a cable modem to enable to it access the Internet. It's also used to connect TVs to cable boxes or satellite receivers.

Which of these is NOT a connector that a coaxial cable can use? (pg. 50-58)

A. F

B. BNC

C. RJ-45

D. RG-59

C. RJ-45 connectors are used on twisted pair cables, the most common type of cabling used in networks.

F (or F-type) connectors are used on coax cables for connecting to cable modems, cable boxes and satellite receivers.

RG-59 is used primarily for cable television.

BNC connectors aren't popular these days.

What are the two types of coaxial cables that cable modems use, and what are they primarily used for? (pg. 52)

A. BNC

B. RG-6

C. RJ-11

D. RG-59

E. RJ-45

B. and D. RG-59 was used primarily for cable television rather than networking. It's thinness and the introduction of digital cable motivated the move to the more robust RG-6.

BNC is an outdated coaxial connector, and the RJ- connectors are used in twisted pair cabling for networking.

All coax cables have a(n) ___ rating. The U.S. military developed these ratings to provide a quick reference for the different types of coax. (pg. 52)

A. RG

B. capacitance

C. ohm

D. impedance

A. Radio Guide (RG) ratings are a classification system for coaxial cables that indicate the cable's size, shielding type, jacket type, and dielectric type. The numbers following RG in a part number are usually an indicator of the cable's diameter, with higher RG numbers indicating a thinner central conductor.

The Ohm rating is a relative measure of the resistance on the cable.

Impedance describes a set of characteristics that define how much a cable resists the flow of electricity.

A wire's capacitance is how long it takes the wire to get to a full charge.

The most important measure of coax cabling is its ___ rating, a relative measure of the resistance on the cable. (pg. 52)

A. capacitance

B. impedance

C. ohm

D. radio guide (RG)

C. The higher the ohm rating, the more it resists the incoming signal or sound.

Impedance describes a set of characteristics that define how much a cable resists the flow of electricity.

A coaxial cable that contains two central copper conductors wrapped around a single shield. (pg. 54)

A. coaxial splitter

B. UTP

C. STP

D. twinaxial

D. Twinaxial is used as a substitute for short fiber connections, generally between equipment within a rack, like switches.

STP and UTP aren't coaxial connections.

A coaxial splitter is useful for turning one one coaxial cable into two possible connections.

What is the most common type of cabling used in networks? (pg. 54)

A. HDMI

B. coaxial

C. fiber

D. twisted pair

D. Twisted pair cabling has been around since the 1970s. Manufactures increased the number of twists per foot, used higher gauge cable and added shielding to make it able to handle higher data speeds.

What are the two types of twisted pair cabling, and what is the benefit to each? (pg. 55)

A. FTP

B. UTP

C. STP

D. SMTP

B. and C. Shielded twisted pair (STP)'s shielding protects the wiring from EMI, while unshielded twisted pair (UTP) costs much less than STP but performs just as well in most environments.

FTP (File Transfer Protocol) and SMTP (Simple Mail Transport Protocol) are network protocols.

A variety of grades developed by the cabling industry to help network installers choose the appropriate cable. (pg. 56)

A. category ratings

B. RG ratings

C. ohm ratings

D. resistance ratings

A. Category (Cat) ratings are officially rated in megahertz

(MHz), indicating the highest frequency the cable can handle.

The ohm rating is a relative measure of the resistance on the cable

Radio Guide (RG) ratings are a classification system for coaxial cables that indicate the cable's size, shielding type, jacket type, and dielectric type.

A cable's cat rating is officially measured in ___, indicating the highest frequency the cable can handle. (pg. 56)

A. capacitance

B. resistance

C. bandwidth

D. megahertz (MHz)

E. resistance

D. UTP cables handle a certain frequency or cycles per second such as 100 megahertz (MHz) or 1000 MHz

A cable's resistance or impedance is measure with its Ohm rating.

Capacitance is how long it takes the wire to get a full charge.

Bandwidth is the maximum amount of data that goes through a cable per second.

In measuring frequency, each cycle per second (or hertz) accounts for ___ bit(s) of data per second. (pg. 57)

A. One Thousand

B. One Hundred

C. Ten

D. One

The maximum amount of data that goes through the cable per second. (pg. 57)

A. frequency

B. hertz

C. bandwidth

D. throughput

C. Bandwidth

Bandwidth and throughput are closely connected, but bandwidth indicates the maximum capacity of a network. Throughput refers to the amount of data that successfully transmits across a network.

Hertz is a unit of measurement that refers to each cycle per second equivalent to one bit of data per second.

Telephones used ___ connectors, designed to support up to two pairs of UTP wires. Current wired networks use the four-pair ___ connectors. (pg. 58)

A. RJ-45

B. RJ-2

C. RJ-11

D. RJ-4

Cable that transmits light rather than electricity, making it attractive for both high-EMI areas and long-distance transmissions. (pg. 59)

A. fiber-optic

B. thunderbolt

C. twisted pair

D. lightning

A. Fiber-optic cabling can operate for distances up to tens of kilometers.

Thunderbolt and Lightning interfaces are used to connect peripherals to devices like computers and smartphones.

Twisted pair cabling is used for networking, but uses electricity rather than light.

Almost all network technologies that use fiber-optic cable require pairs of fiber (one for sending, one for receiving). What is this type of cabling called? (pg. 60)

A. duplex fiber-optic cabling

B. dual band fiber

C. multimode fiber (MMF)

D. twisted pair fiber

A. Duplex fiber-optic cabling

MMF refers to fiber-optic cabling that uses LEDs instead of lasers to send signals, not the number of pairs the cabling has.

Dual band fiber and twisted pair fiber don't exist.

Network technologies that use fiber optics use ___ to send light signals. A fiber-optic cable that uses them is known as ___. (pg. 61)

A. light-emitting diodes (LED)/single-mode fiber (SMF)

B. lasers/multimode fiber (MMF)

C. lasers/single-mode fiber (SMF)

D. light-emitting diodes (LEDs)/multimode fiber (MMF)

A fiber-optic cable that uses lasers is known as ___. (pg. 61)

A. single-mode fiber (SMF)

B. simplex

C. multimode fiber (MMF)

D. duplex

What advantages does using laser light and single-mode fiber-optic cables have over multimode fiber-optics? (Select all that apply, pg. 61)

A. less signal loss

B. cheaper hardware

C. no modal distortion

D. higher transfer rates over long distances

C. and D. Using SMF prevents modal distortion (signals sent at the same time don't arrive at the same time) and enables a network to achieve phenomally higher transfer rates over incredibly long distances.

What are the four main connector types for fiber-optic cables? (pg. 61-62)

A. LC                        E. SC

B. ST                        F. STP
C. UTP                      G. MR-RJ

D. SMF                     H. MMF

A., B., E. and J.: ST, SC, LC and MT-RJ.

STP and UTP are connectors used in twisted pair copper cabling.

SMF and MMF (single mode fiber and multimode fiber) refer to whether the cable transmits regular light or laser light.

Ratings that define the risk of network cables burning and creating noxious fumes and smoke. (pg. 63)

A. radio guide

B. fire

C. category

D. ohm

B. Fire ratings

Category (Cat) ratings are used to help choose the best cable for the situation, like maximum bandwidth and distance.

Radio Guide (RG) ratings are a classification system for coaxial cables that indicate the cable's size, shielding type, jacket type, and dielectric type.

The ohm rating is a relative measure of the resistance on the cable