Gendron -CH 5
RJ-45
4-pair UTP terminates in a(n) ________ connector.
on a customer premises
A local area network operates ________.
802.1AE
ARP cache poisoning can be defeated using ________.
physical
At what layer is the 100BASE-TX standard?
1 Gbps
CAT 5e and CAT 6 wiring can carry Ethernet traffic 100 meters up to ________.
MAC
Ethernet addresses were formerly called ________ addresses.
MAC
Ethernet has only a single standard at the ________ layer.
its hierarchical topology
Ethernet is inexpensive thanks to ________.
neither internet nor transport
Ethernet standards are specified at the ________ layer.
physical
Ethernet standards are specified at the ________ layer.
physical links
Ethernet usually has a 100 meter distance limit for ________.
neither expensive nor reliable
Ethernet's hierarchical topology makes it ________.
lower costs per frame handled
Ethernet's hierarchical topology tends to create ________.
single-mode fiber
Fiber that has a core diameter of 8 microns is ________.
8
How many wires are there is a UTP Ethernet cord?
drops the frame
If an Ethernet receiver detects an error in an arriving frame, it ________.
UTP, access lines
In LANs, ________ typically is for ________.
trunk lines
In LANs, optical fiber typically is used in ________.
hierarchical
In a ________ topology, there is only one possible path between any two hosts.
two
In binary signaling there is (are) ________ state(s).
a small number of
In digital signaling there is (are) ________ state(s)
core
In optical fiber, light travels through the ________.
both two and three
Link aggregation can increase trunk speed by a factor of ________.
reduce hardware costs
Managed Ethernet switches ________.
multimode fiber
Modal dispersion limits transmission distance in ________.
for full-duplex transmission
Optical fiber cords use two strands ________.
signaling
Physical layer standards govern ________.
hierarchical
Switches in an Ethernet LAN are organized in a ________ topology.
both a packet and the LLC subheader
The Ethernet data field contains ________.
Data field
The Ethernet length field gives the length of the ________.
data field
The Ethernet length field gives the length of the ________.
802.1X
The ________ standard was created to prevent attackers from walking in and simply plugging a computer into a wall jack and therefore accessing the network.
wavelength
The distance between two corresponding points in adjacent cycles is the ________.
single-mode fiber
The longest transmission distances are possible with ________.
Speed
The main benefit of parallel transmission over serial transmission is ________.
EUI-48
The official name for Ethernet addresses is the ________ addresses.
quality
UTP categories rate the ________ of UTP cabling.
both wireless access points and voice over IP telephones
Under the standard, Ethernet switches can provide enough power over UTP for ________.
wireless access points
Under the standard, Ethernet switches can provide enough power over UTP for ________.
Terminal crosstalk interference
Untwisting wire pairs no more than 1.25 cm (a half inch) at their ends reduces ________.
terminal crosstalk interference
Untwisting wire pairs no more than 1.25 cm (a half inch) at their ends reduces ________.
tag
Using priority in Ethernet requires the use of ________ fields.
802.3
What 802 Working Group creates Ethernet standards?
digital
What form of transmission is most resistant to transmission errors?
25
What is the maximum power for POE Plus in the standard?
4-pair UTP
What type of copper wiring is widely used in Ethernet?
core switches
What type of switch connects switches to other switches?
workgroup switches
What type of switch connects users to the network?
category 6A
Which UTP quality levels are needed to send signals 100 meters at 10 gigabits per second?
both category 6 and category 6A
Which UTP quality levels can send signals at 10 gigabits per second?
850 nm
Which light wavelength dominates in LANs?
using the Rapid Spanning Tree Protocol
Which of the following can increase reliability considerably in an Ethernet LAN?
both consistency in authentication and faster changes when authentication information needs to be changed
Which of the following is a benefit of using a central authentication server?
binary signaling
Which of the following is relatively immune to small errors?
multimode fiber
Which of the following is used most heavily in LANs for fiber transmission links?
OM4
________ fiber is being sold today.
