Term
| In a LAN, all devices are attached to a common _______ ______. |
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Definition
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Term
| A LAN can use (4) these as a connection media: |
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Definition
• fiber-optic
• coaxial
• twisted-pair cabling
• wireless technology, as connection media. |
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Term
| LAN is a ____-____ network, with connections that run at 10, 100, or 1000 Mbps. |
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Definition
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Term
| What are the two categories of connectivity technology? |
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Definition
|
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Term
| Use a physical transmission medium to connect systems together to form a network |
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Definition
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Term
Don't use a physical medium to connect systems together to form a network.
Wireless technologies |
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Definition
|
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Term
| What is the medium of Wireless technologies? |
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Definition
| The transmission medium is typically radio-frequency based or light based. |
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Term
| Technologies that use wires to physically interconnect networks include (5) |
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Definition
• dial-up networking
• broadband cable
• broadband Digital Subscriber Line or DSL
• Integrated Services Digital Network or ISDN, and
• Ethernet |
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Term
| _____-___ ______ enables a computer or any other network device to connect to a LAN or the Internet via telephone lines. |
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Definition
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Term
| Why is dial-up no longer used? |
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Definition
| poor connectivity speeds and reliability issues |
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Term
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Definition
|
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Term
| What modem speeds are typically achieved? |
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Definition
| modem speeds of 33.6 Kbps or lower are often achieved. |
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Term
| How can dial-up speeds be increased? |
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Definition
| International standards such as V.90 and V.92, enable data to be compressed before transmission, thus increasing the transfer speeds to 56 Kbps. |
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Term
(T/F)
The data transfer rates of dial-up networking are much lower than the rates offered by broadband technologies. |
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Definition
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Term
| _______ uses digital signals to transfer data. |
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Definition
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Term
(T/F)
Most broadband systems remain connected to the Internet – at all times. |
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Definition
|
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Term
| The kinds of broadband services available are (2): |
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Definition
|
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Term
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Definition
| 500Kbps or more, typically between 1 – 2 Mbps |
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Term
| Cable technology is based on bandwidth shared with other cable subscribers, making _____ _____ dependent on the number of subscribers on the network. |
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Definition
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Term
(T/F)
A cable signal is always available so you don't need to connect to the ISP every time you want to access the Internet. |
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Definition
|
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Term
|
Definition
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Term
| Uses a modem and an Ethernet card to connect to the Internet. |
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Definition
|
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Term
|
Definition
| transfers data using a digital signal and offers speeds of 1.5 Mbps and higher. |
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Term
(T/F)
Like cable, DSL is a shared service. |
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Definition
False
Unlike cable, DSL isn't a shared service connection. However, DSL can generally only transmit data over short initial distances from the central office or telephone exchange. |
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Term
| How close do you have to live near an exchange to use a DSL? |
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Definition
| You typically have to live within 4 kilometers of the exchange to use DSL. |
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Term
| The two types of DSL technology are: |
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Definition
|
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Term
| data download speeds being far greater than data upload speeds |
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Definition
|
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Term
|
Definition
|
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Term
(T/F)
ADSL is intended for large businesses who download more information than they send. |
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Definition
False
ADSL is intended for home users and small businesses who download more information than they send. |
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Term
| ADSL Receiving data rates |
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Definition
| typically 1 Mbps and upwards |
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Term
|
Definition
| sending data rates are typically 256 Kbps and upwards |
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Term
(T/F)
Sending rates are always lower with ADSL. |
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Definition
|
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Term
|
Definition
|
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Term
| equal rates for sending and receiving data |
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Definition
|
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Term
(T/F)
SDSL is inexpensive for small-sized businesses. |
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Definition
False
SDSL can be fairly expensive and is intended for small-sized and medium-sized businesses requiring equal speeds for sending and receiving data. |
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Term
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Definition
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Term
| Older standard used to send encoded voice, data, and video over regular telephone copper wires. |
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Definition
|
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Term
(T/F)
An ISDN connection requires an adapter or an ISDN router. |
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Definition
|
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Term
(T/F)
A basic rate ISDN channel is 56 Kbps, and channels can be aggregated up to 1 Mbps. |
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Definition
False
A basic rate ISDN channel is 64 Kbps, and channels can be aggregated up to 2 Mbps. |
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Term
(T/F)
ISDN supports medium-speed or high-speed transmission rates. |
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Definition
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Term
| ISDN uses multiplexing to _____ multiple channels. |
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Definition
|
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Term
(T/F)
ISDN can simultaneously support between thirty-two and sixty-four 56 Kbps data lines on a single channel. |
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Definition
False
ISDN can simultaneously support between two and thirty 64 Kbps data lines on a single channel. |
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Term
| Why is broadband more popular than ISDN? |
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Definition
| Broadband has become more popular than ISDN due to higher transfer speeds. |
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Term
| The process of combining multiple information channels over a shared transmission medium. |
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Definition
|
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Term
| What is the advantage of multiplexing? |
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Definition
| It saves costs and increases capacity. |
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Term
(T/F)
Broadband satellite connections can sometimes rival the transmission speeds of broadband cable and DSL. |
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Definition
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Term
| What do you need to connect to the internet via satellite (3)? |
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Definition
satellite dish antenna
transceiver
satellite ISP |
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Term
| What can degrade a satellite signal? |
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Definition
| Solar interference and unfavorable weather can compromise satellite Internet connectivity. These can degrade the signal or cause the connection to be lost. |
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Term
Which of these connection types use telephone transmission lines to provide network access?
Options:
1. DSL
2. ISDN
3. Cable
4. Satellite |
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Definition
Correct answer(s):
1. DSL
2. ISDN |
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Term
| What are the ways that a VoIP subscriber can connect to its service provider? |
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Definition
|
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Term
(T/F)
VoIP phones used in conjunction with a service provider let users connect directly to the IP network, using ISDN or Ethernet. |
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Definition
|
|
Term
| What do you need in order to make VoIP calls? |
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Definition
Router
PC headset with a microphone, or telephone. |
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Term
| _______ is the official IEEE 802.3 standard, standardized by the Institute of Electrical and Electronic Engineers. |
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Definition
|
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Term
| This standard applies to wired LANs, defining the physical and data-link layers, and controlling how data is transmitted. |
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Definition
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|
Term
| Ethernet can be broken down into three main categories: |
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Definition
• 1000 Mbps or Gigabit Ethernet – a LAN standard for Gigabit data transmission
• 100 Mbps or Fast Ethernet – a LAN standard for 100 Mbps data transmission
• 10 Mbps Ethernet |
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Term
| One variation of 10 Mbps Ethernet is _______ |
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Definition
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Term
| In 10BaseT notation, the "10" refers to the theoretical ______ ______ _____ rate in megabits per second. |
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Definition
| maximum data transmission |
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Term
| The "Base" is short for_______. |
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Definition
|
|
Term
| What is meant by baseband? |
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Definition
| This means each data signal has full, unmodulated control of the cable, on a single frequency over twisted pair cable. |
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Term
| 10BaseT uses ___ cabling to link workstations and hubs to form a network. |
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Definition
| unshielded twisted-pair, also known as UTP |
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Term
|
Definition
| While it supports a maximum bandwidth of 10 Mbps |
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Term
| What lowers the maximum bandwidth possible for 10BaseT? |
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Definition
| protocol overhead and, in some cases, collisions. |
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Term
| What is the maximum cable length between devices under the 10Base specification? |
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Definition
| allows for a maximum cable length between devices of 100 meters. |
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Term
| 10BaseT networks use a _____ _____ with a central hub or switch, connected by either category 3, category 4, or category 5 UTP cabling. |
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Definition
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Term
| To eliminate the need to rewire a network if you upgrade to ______ ______, you should use category 5 cabling when initially wiring a 10BaseT network. |
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Definition
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Term
| ______ ______ are used to house cable connections running from wall plates, and also provide termination points. |
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Definition
|
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Term
(T/F)
Ports on the patch panel are linked to the switch with patch cables. |
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Definition
|
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Term
(T/F)
10BaseT is not capable for creating large LANs. |
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Definition
False
Although better suited to smaller LANs, it's possible to network large numbers of computers using 10BaseT. |
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Term
| How can a large LAN be achieved using 10BaseT? |
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Definition
| This can be achieved by cascading hubs or switches into a tree or cascaded star topology, or by using stackable hubs. |
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Term
| For optimal performance, collision domains supporting no more than ____ nodes are recommended, despite the ____ node capacity. |
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Definition
|
|
Term
| _______ ______ refers to the quality, accuracy, and consistency of the data. |
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Definition
|
|
Term
| derived from the two conductors that are twisted together to cancel out electromagnetic interference in this cable: |
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Definition
|
|
Term
(T/F)
The outer covering of the cable is referred to as the coat. |
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Definition
|
|
Term
| There are two variations of twisted-pair cabling: |
|
Definition
1. Unshielded Twisted Pair, or UTP and
2. Shielded Twisted Pair, or STP |
|
|
Term
| What is the key difference between UTP and STP? |
|
Definition
| The key difference between UTP and STP is the extra layer of insulation beneath the jacket, referred to as the shield, characteristic of STP cabling. The shield helps fend off interference from outside devices, better protecting the data traveling through the cable. |
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Term
| For UTP and STP, distances greater than 100 meters are made possible by connecting segments to one another via ______. |
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Definition
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|
Term
| What is the function of a repeater? |
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Definition
| A digital signal degrades as it travels, and some repeaters restore and boost the signal before relaying it. This enables the signal to travel further along the cabling. |
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Term
| Made from two layers of insulation and a plastic exterior shield the center. |
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Definition
|
|
Term
| There are two kinds of coaxial cabling: |
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Definition
|
|
Term
| uses RG-58 cable, which is .25 inches thick. It transmits at 10 Mbps and the maximum allowable cable length is 185 meters. |
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Definition
| Thinnet, or Thin Ethernet, |
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Term
| uses RG-8 radio grade and is .50 inches thick. It transmits at 10 Mbps and the maximum allowable cable length is 500 meters. |
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Definition
| Thicknet, or Thick Ethernet, |
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Term
| Thinnet uses ____ connectors, named for it's inventors, to connect to a workstation. |
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Definition
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Term
| Thicknet uses an _____ port to link the cable to the system with a transceiver known as a vampire tap. |
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Definition
|
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Term
|
Definition
|
|
Term
| A _____ ____ has small 'teeth' that clamp the cable and cut into its core to enable an electrical signal to pass from the system to the main network cable. |
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Definition
|
|
Term
(T/F)
Fiber optic cabling can transmit data across distances of 10 kilometers or more. |
|
Definition
False
2 kilometers or more |
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|
Term
(T/F)
The major drawback of fiber optic cabling is the cost involved. |
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Definition
|
|
Term
| Fiber optic cable comprises an optical, or glass, fiber core, insulated by _____ _____, all enclosed in a jacket. |
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Definition
|
|
Term
| It is impossible to corrupt fiber optic signals through electronic interference. |
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Definition
|
|
Term
| How many channels are supported by one fiber optic cable? |
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Definition
| The cable supports two fiber channels, one for sending and the other for receiving data. |
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Term
| What are the transmission speeds of fiber optic cables? |
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Definition
| Transmission speeds range from 100 Mbps to 10 Gbps. |
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|
Term
| What are the two applications for fiber optic cabling? |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Uses one ray of light, or mode, to transmit information over longer distances |
|
Definition
|
|
Term
|
Definition
|
|
Term
| Uses multiple modes to transmit information over shorter distances, at the same time. |
|
Definition
|
|
Term
(T/F)
For MMF, each mode runs at an identical reflection angle. |
|
Definition
False
Different reflection angle |
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|
Term
| What are the connectors used for fiber optic cabling (4)? |
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Definition
|
|
Term
|
Definition
|
|
Term
| Spin-off of the BNC connector used with thinnet cables, but applied to optical fiber connections |
|
Definition
|
|
Term
|
Definition
Subscriber Connector
Square Connector |
|
|
Term
| A small plastic square, although not as small as LC, for fiber optic connections |
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Definition
|
|
Term
|
Definition
|
|
Term
| resembles the SC, but smaller form factor |
|
Definition
|
|
Term
|
Definition
| Mechanical Transfer-Registered Jack |
|
|
Term
| resembles the RJ-45 connector, however it has a smaller form factor and is used for fiber optic connections |
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Definition
|
|
Term
Question
Which cable types are limited to transmitting data along distances of less than 200 meters?
Options:
1. STP
2. Thinnet
3. Thicknet
4. Fiber optic |
|
Definition
Correct answer(s):
1. STP
2. Thinnet |
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Term
| Whatever connection type is implemented, clients on a TCP/IP network are usually allocated an IP address ______ via DHCP. |
|
Definition
|
|
Term
(T/F)
Dynamic IP addresses are usually assigned to desktop clients. |
|
Definition
|
|
Term
(T/F)
Some servers, such as Active Directory Domain Controllers and ISDN servers must be assigned a static IP address, so that they can be addressed consistently with the same IP. |
|
Definition
False
Active Directory Domain Controllers and DNS servers |
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Term
| Before you can configure the properties within the Network and Sharing Center, _____ prompts you to authorize the action. |
|
Definition
| UAC, User Account Control |
|
|
Term
(T/F)
If you choose to obtain an IP address and DNS server address automatically, then the client is configured for DHCP. |
|
Definition
|
|
Term
(T/F)
If you choose to create a static IP address, you only need to enter the dotted decimal numerical value of the IP address. |
|
Definition
False
IP address and the subnet mask |
|
|
Term
| What cables are limited to connections of 200m or less? |
|
Definition
|
|
