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;
23 Cards in this Set
- Front
- Back
|
What is a bus topology?
|
This is a linear topology, with all devices connected to the cable?
|
|
|
What is a star topology?
|
Each device is connected to a central point. Sometimes called hub-and-spoke.
|
|
|
What is an extended star topology?
|
A star topology is in the center, but instead of each point being a single device, it can be the center of another star topology.
|
|
|
What is a full mesh topology?
|
Each device has a direct connection to each other device.
|
|
|
What is a partial mesh topology?
|
Each device does not have a direct connection to each other device.
|
|
|
What is a single ring topology?
|
Each device is connected directly to two others so that the signal is repeated in one direction, creating a ring or loop.
|
|
|
what is a dual ring topology?
|
Two rings go through the same set of devices, allowing loops to be made upon failure, which continues the operation of a ring.
|
|
|
What is UTP cabling?
|
Unshielded twisted pair. The outer jacket's only real purpose is to hold the interior cabling together.
|
|
|
What is STP cabling?
|
Shielded twisted pair. The outer part of the cable is made of plastic insulation material.
|
|
|
What are the characteristics of UTP CAT 1?
|
Used only for telephones.
|
|
|
What are the characteristics of UTP CAT 2 cabling?
|
Max speed of 4 Mbps. Originally intended for Token Ring.
|
|
|
What are the characteristics of UTP CAT 3 cabling?
|
Max speed of 10 Mbps. Often used for telephone wiring, was popular for Ethernet in the past if it was already laid.
|
|
|
What are the characteristics of UTP CAT 4 cabling?
|
Max speed of 16 Mbps. Intended for the fast Token Ring speed option.
|
|
|
What are the characteristics of UTP CAT 5 cabling?
|
Max speed of 1 Gbps. Very popular for cabling to the desktop.
|
|
|
What are the characteristics of UTP CAT 5e cabling?
|
Max speed of 1 Gbps. Lower emissions, more expensive than CAT5, but better for gigabit ethernet.
|
|
|
What are the characteristics of UTP CAT 6 cabling?
|
Max speed of 1 Gbps+. Intended to support multigigabit speeds when standards are created.
|
|
|
What are the pros and cons of using coaxial cabling?
|
Longer network segments (500m), with longer distances allowed if using repeaters. Cons are that it is more expensive, heavier, larger, and relatively inflexible. Also, when used for Ethernet, a single break in the cable takes down the whole Ethernet segment!
|
|
|
What are the pros and cons of using optical cabling?
|
Cons: Very expensive. Pros: Greater cabling distances (10km), only type of cabling that supports 10 gig ethernet, and less magnetic interference which makes it more secure.
|
|
|
What are the two kinds of optical cabling?
|
Multimode (MM) and Single-mode (SM). SM uses a very small diameter fiber and MM uses a larger size. SM requires more precision in manufacturing and by the hardware that generates the light, but it allows longer distances and greater data transfer rates.
|
|
|
What connectors are used with optical cabling?
|
Individual ST connectors, which look like BNC connectors. An SC connector, which terminates both strands. And an MT-RJ connector, which is molded in the shape of an RJ-45 connector.
|
|
|
What are the differences between 10 gig ethernet and other ethernet standards?
|
It allows only point-to-point topology, intended for connectivity between switching devices. Allows only full-duplex. Optical cabling only.
|
|
|
What is the DSL device at the Telco called?
|
DSL Access Multiplexer (DSLAM).
|
|
|
How does a DSL modem transmit voice and data at the same time?
|
Voice calls use frequencies between 0 and 4000 Hz, data is transmitted at higher frequencies.
|
