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network technologies

lesson 4 ethernet

QuestionAnswer
? was the first Ethernet standard. 10Base5
Which Ethernet standard was developed in 1982? 10Base2
Which components make up the DIX Ethernet and IEEE 802.3? I. CSMA/CD II. Ethernet frame III. Physical layer specifications
In an Ethernet frame, the preamble field contains ? . 7BYTES
The destination address field contains a ? hexadecimal MAC address of the network interface adaptor on the local network, to which the frame will be transmitted. 6 bytes
How many bytes are contained in the source address field? 6
What is the maximum size of the data and pad field of an Ethernet frame? 1,500 bytes
With CSMA/CD, the ? phase is the phase during which the station transmits its data packet when the network is free and all of the stations on the network are contending for access to the same network medium. multiple access
t/f With CSMA/CD, when a collision occurs, the system that caused the collision must discard the frames and try retransmitting 10 seconds later. false
In some instances, a system may finish transmitting before a collision occurs, thus preventing the system from detecting the collision. What might be the cause of this? The network cable is too long or The packet is too short
Ethernet packets must be at least ? long. 64 bytes
The ? alerts the other systems on the network that a collision has taken place. jam pattern
Which is not an acceptable method used for reducing traffic on a LAN? install a hub
Standard Ethernet networks use ? to verify the integrity of a link between two devices. NLP
With a 100Base-FX network with full duplex communications, a multimode fiber-optic cable segment can be as long as ? . 2,000 m
What is the maximum segment length for 1000Base-SX when using 62.5/125 multimode fiber-optic cable? 220 m
What is the maximum segment length for 150-ohm shielded, balanced twin-axial copper cable? 25 m
Ten-gigabit Ethernet networks support only ? , full-duplex communication on switched networks. four-pair
Standard Cat6 cable used in 10Gbase-T networks can support segments up to ? long. 55 m
What is the maximum segment length for 9/125 single-mode fiber-optic cable? 5,000 m
Created by: Yusosweet1
 

 



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