Chapter 02 Quiz (ITN101) - Cabling and Topology

Which cable type suffers from electromagnetic interference (EMI)?

unshielded twisted pair (UTP)

Which first-generation network topology provided fault tolerance?

star

Which type of cable is described as a central conductor wire that is surrounded by insulating materials and placed inside a braided metal shield?

coaxial

What type of fiber-optic cable uses lasers to send signals?

single-mode fiber (SMF)

What is the meaning of the term "capacitance"?

how long it takes a wire to get a full charge

A manufacturer selling boxed reels of unshielded twisted pair (UTP) cabling will clearly mark the cable's category rating on the connectors at the end of the cable. (T/F)

False

Which term describes 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?

network technology

The most common type of cabling used in networks today consists of fiber-optic cables. (T/F)

False

Fiber-optic cable is attractive for use in high electromagnetic interference (EMI) areas. (T/F)

True

Multimode fiber cables transmit __________ wavelengths.

850-nm

The two types of meshed topologies are partially meshed and wholly meshed. (T/F)

False

Because most networks can run at speeds of up to 1000 Mbps, most new cabling installations use which category of cabling?

Cat 6

Which connector is currently used in wired networks?

8P8C (8 position 8 contact)

UTP category ratings are based on what criteria?

the highest frequency the cable can handle

Which term refers to a relative measure of the resistance (or more precisely, characteristic impedance) on a cable?

Ohm rating

Plenum cable provides less protection than riser-rated cable. (T/F)

False

Which category rating uses a bandwidth of 250 MHz to accommodate 10000 Mbps?

Cat 6

What distance can a signal travel on a fiber-optic cable?

tens of kilometers

Almost all network technologies that use fiber-optic cable require pairs of fibers. (T/F)

True

Which IEEE subcommittee sets the standards for Wireless LAN networks?

802\.11

What statement describes the advantage of fault tolerance?

If one cable breaks, all of the other computers can still communicate.

Which cable creates much less smoke and fumes when burned, but costs about three to five times as much as PVC-rated cable?

plenum-rated

What is the space between the acoustical tile ceiling in an office building and the actual concrete ceiling above called?

plenum

What is the primary use of coaxial cable in networking today?

connecting a cable modem to an Internet service provider (ISP)

In response to the demand for two-pair cabling, manufacturers often connect two fibers together to create __________ fiber-optic cabling.

duplex

What is the minimum category rating of UTP cabling you would need for a network that runs at 1000 Mbps?

Cat 5e

In a partially meshed topology network, at least two machines have redundant connections. (T/F)

True

Which fire cable rating has no significant fire protection?

cable with a polyvinyl chloride (PVC) rating

Which type of cable is uses a two-number designator consisting of core and cladding measurements?

fiber-optic

Most new cabling installations use Category 3 (Cat 3) unshielded twisted pair (UTP) cables. (T/F)

False

Which IEEE committee defines frames, speeds, distances, and types of cabling to use in a network environment?

IEEE 802

A type of fire rating known as __________ designates the proper cabling to use for vertical runs between floors of a building.

riser

Unshielded twisted pair (UTP) category (Cat) ratings are officially rated in megahertz (MHz), indicating the highest frequency the cable can handle. (T/F)

True

What is the only important measure of coax cabling?

Ohm rating

A __________ cable that uses LEDs is known as multimode fiber (MMF).

fiber-optic