Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
21 Cards in this Set
- Front
- Back
|
What does CSMA/CD stand for?
|
Carrier Sense Multiple Access with Collision Detection
|
|
|
What is the IEEE number of 10Base-T?
|
IEEE 802.3
T=Twisted Pair 10 = 10 Megabits |
|
|
What does the "5" mean in 10Base5?
|
This refers to the limit of the length of the cable.
10base5 = 500 meters 10base2 = 185 meters 10baseT = 100 meters |
|
|
What is the longest cable that can be used with 10BaseT?
|
100 meters
|
|
|
What is the IEEE equivalent for FastEthernet?
|
IEEE 802.3u
100MBps 100 Meters |
|
|
What is the IEEE equivalent of Gigabit Ethernet?
|
IEEE 802.3z
IEEE 802.ab 100 meters max distance 1000MBps |
|
|
What is a standard Ethernet cabling type?
|
Category 5 Unshielded Twisted Pair (CAT5 UTP)
RJ-45 connector on end |
|
|
In Cat5 cabling, which wires are used to transmit data, and which wires are used to receive data?
|
1 and 2 - Transmit
3 and 6 - Receive |
|
|
What is crosstalk?
|
Crosstalk is caused by the electromagnetic interference. Basically, a signal crosses over from one pair of cables to another, causing the signals to become usable.
|
|
|
What is NEXT?
|
Near-End Crosstalk is a condition generally caused by crossed or crushed pairs of wires. The conductors inside the wires don't even have to be exposed, but if the conductors are too close, the signal traveling on one wire can actually interfere with the signal on the other wire. The "near-end" is a relative term, referring to the end of the cable being tested (as opposed to far-end crosstalk, or FEXT)
|
|
|
When do you use a straightthrough cable?
|
A straightthrough cable is used to connect a PC to a switch or a hub. In a straight through cable, the wire connected to Pin1 on one side is connected to Pin1 on the other side. Pin2 is connected to Pin2 on the other side and so forth.
|
|
|
When do you use a crossover cable?
|
When you connect two similar devices together, such as two switches together.
|
|
|
What pins match up on each side of the crossover cable?
|
Local Cable Pins 1,2,3,6
Remote Cable Pins 3,6,1,2 |
|
|
What pins connect together on a rollover cable?
|
Pin 1-8, 2-7, 3-6, 4-5
|
|
|
What are the names for Physical addresses?
|
Ethernet, NIC, Physical, LAN, BIA
|
|
|
How many bits is a MAC address?
|
48-bit
|
|
|
What are the components of a MAC address?
|
First part is the OUI (Organizationally Unique Identifier. OUI is assigned by IEEE and is unique to each vendor.
Second half is a value that has not yet been used by that vendor. |
|
|
What is the broadcast MAC address?
|
FF-FF-FF-FF-FF-FF
|
|
|
What is the first half of a multicast MAC address?
|
01-00-5E
|
|
|
What is the range in the second half of a multicast MAC address?
|
00-00-00 to 7F-FF-FF
|
|
|
What is the difference between a Broadcast, Unicast, and Multicast?
|
Broadcast - Everybody gets it
Unicast - Only goes to one host Multicast - Group of hosts get it |
