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Chapter 4 Ethernet Basics
Book Notes
41
Computer Networking
Not Applicable
05/08/2013

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Term
Xerox worked with _____ and Intel to publish what became known a as the Digital-Intel Xerox (DIX)
Definition
Digital Equipment Corporation (DEC)
Term
Xerox worked with the DEC and Intel to publish what became known as the _____ standard.
Definition
Digital -Intel-Xerox (DIX)
Term
The earliest version of Ethernet was ______ and _____.
Definition
10Base2 and 10Base5
Term
Two analog technologies were ______ and _____, were used to transmit multiple signals at the same time over cable.
Definition
Amplitude Modulation (AM) and Frequency Modulation (FM)
Term
Every version of Ethernet invented since the early 1990s uses a _____ topology.
Definition
Star-Bus
Term
A basic Ethernet frame contains seven pieces of information. What are they?
Definition
Preamble, MAC Address Sender, MAC Address Receiver, Type, Data, Pad, and FCS
Term
The preamble is added by the _____.
Definition
Sending NIC
Term
Ethernet identifies the NICs on a networking using special 48-bit (6-byte) binary addresses known as _____.
Definition
MAC Addresses
Term
Within an Ethernet frame the _____ field helps the receiving computer interpret the frame contents at a very basic level.
Definition
Type
Term
Within an Ethernet frame, the _____ part of the frame contains whatever payload the frame carries.
Definition
Data
Term
_____ means that each node using the network examines the cable before sending a data frame.
Definition
Carrier Sense
Term
_____ means that all machines have equal access to the wire.
Definition
Multiple Access
Term
What are two early implementations of Ethernet?
Definition
10BaseT and 10BaseFL
Term
If you ever run into a situation on a 10BaseT or later network in which none of the computers can get on the network, always check what first?
Definition
Hub
Term
In 10BaseT, the 10 represents _____.
Definition
Speed
Term
In 10BaseT, the Base represents _____.
Definition
Baseband (Signaling Type)
Term
In 10BaseT, the T represents _____.
Definition
Twisted Pair
Term
10Base2 could be almost _____ meters.
Definition
200
Term
10Base5 could be almost _____ meters.
Definition
500
Term
10BaseT uses only _____ of the 8 pairs of twisted wires.
Definition
2
Term
10BaseT uses pins _____ and _____ to send data.
Definition
1 and 2
Term
10BaseT uses pins _____ and _____ to receive data.
Definition
3 and 6
Term
An RJ-45 connector is usually called a _____.
Definition
Crimp
Term
The act of installing a crimp at the end of an RJ-45 cable is called _____.
Definition
Crimping
Term
The tool used to crimp the ends of cables is called a _____.
Definition
Crimper
Term
The real name for RJ-45 is _____.
Definition
8 Position 8 Contact (8P8C)
Term
What are the two standards for TIA/EIA?
Definition
568A and 568B
Term
What is the newest standard for TIA/EIA?
Definition
568C
Term
Which Base has a distance of 100 meters, speed of 10 Mbps, and a signal type of Baseband?
Definition
10BaseT
Term
Which Base has a distance of 2000 meters, speed of 10 Mbps, and a Signal type of Baseband?
Definition
10BaseFL
Term
Once an organization uses every port on its existing hub, adding more nodes requires adding hubs or a device called a _____.
Definition
Bridge
Term
As a rule, y our cannot daisy chain more than _____ hubs together.
Definition
Four
Term
T or F You can plug multiple hubs into one hub.
Definition
0
Term
Hub makers give their uplink ports many different names such as _____, _____, and _____.
Definition
Crossover, MDI-X, and OUT
Term
A _____ is a regular port on a hub or switch.
Definition
Media Dependent Interface (MDI)
Term
A _____ is an uplink port on a hub.
Definition
MDI-X
Term
To _____ traffic means to stop it form crossing from one network to the next.
Definition
Filter
Term
To _____ traffic means to pass traffic originating on one side of the bridge to the other.
Definition
Forward
Term
What type of networks will you find bridges on wired or wireless?
Definition
Wireless
Term
STP-enabled switches use a frame called a _____ to communicate with each other to determine things like the distances between them and to keep track of changes on the network.
Definition
Bridge Protocol Data Unit (BPDU)
Term
Very occasionally you will run into ah hub or switch that has problems. They can fall into three categories. What are those categories?
Definition
Obvious Physical Damage, Dead Ports, and General Flakiness
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