MISC Chapter 5
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