MISC Chapter 5

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CAT 5e and CAT 6 wiring can carry Ethernet traffic 100 meters up to ________.

1 Gbps

What is the maximum power for POE Plus in the standard?

25 watts

How many wires are there is a UTP Ethernet cord?

8

The ________ standard was created to prevent attackers from walking in and simply plugging a computer into a wall jack and therefore accessing the network.

802.1X

What 802 Working Group creates Ethernet standards?

802.3

Which light wavelength dominates in LANs?

850 nm

The official name for Ethernet addresses is the ________ addresses.

EUI-48

In a ________ topology, there is only one possible path between any two hosts.

Hierarchical

Switches in an Ethernet LAN are organized in a ________ topology.

Hierarchical

What organization creates Ethernet standards? (Give the most specific answer.)

IEEE

At what layer is the 100BASE-TX standard?

Physical

Ethernet standards are specified at the ________ layer.

Physical

4-pair UTP terminates in a(n) ________ connector.

RJ-45

In this book, we use the terms Ethernet and 802.3 interchangeably.

True

The distance between two corresponding points in adjacent cycles is the ________.

Wavelength

An Ethernet switch knows ________.

a single port number for each EUI-48 address

In digital signaling there is (are) ________ state(s).

a small number of

The Ethernet data field contains ________.

both a packet and the LLC subheader

Which UTP quality levels can send signals at 10 gigabits per second?

both category 6 and category 6A

Which of the following is a benefit of using a central authentication server?

both consistency in authentication and faster changes when authentication information needs to be changed

Link aggregation can increase trunk speed by a factor of ________.

both two and three

Under the standard, Ethernet switches can provide enough power over UTP for ________.

both wireless access points and voice over IP telephones

In optical fiber, light travels through the ________.

core

The purpose of LLC subheader is to ________.

designate the type of packet in the data field

If an Ethernet receiver detects an error in an arriving frame, it ________.

drops the frame

Optical fiber cords use two strands ________.

for full-duplex transmission

The ability to transmit in two directions simultaneously is ________.

full-duplex communication

Modal dispersion limits transmission distance in ________.

multimode fiber

Which of the following is used most heavily in LANs for fiber transmission links?

multimode fiber

Ethernet's hierarchical topology makes it ________.

neither expensive nor reliable

A local area network operates ________.

on a customer premises

Ethernet usually has a 100 meter distance limit for ________.

physical links

UTP categories rate the ________ of UTP cabling.

quality

A man in the middle attack ________.

reads traffic traveling between one host to another

Untwisting wire pairs no more than 1.25 cm (a half inch) at their ends reduces ________.

terminal crosstalk interference

In LANs, optical fiber typically is used in ________.

trunk lines

In binary signaling there is (are) ________ state(s).

two

Ethernet can offer ________ priority levels.

up to 8

Which of the following can increase reliability considerably in an Ethernet LAN?

using the Rapid Spanning Tree Protocol


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